FOR CENTRAL ACADEMY BOILER REPLACEMENT · 2017. 5. 16. · Central Academy – Boiler Replacement– Scope of Work Page 2 4. Questions shall be directed in writing to Dave Berger

QUOTE DOCUMENTS

FOR

CENTRAL ACADEMY

BOILER REPLACEMENT

1912 Grand Avenue

Des Moines, Iowa

QUOTE # Q7276

Owner

Des Moines Public Schools 1917 Dean Avenue

Des Moines, Iowa 50316

DES MOINES PUBLIC SCHOOLS CENTRAL ACADEMY – BOILER REPLACEMENT

1912 GRAND AVENUE QUOTE NO. Q7276 – SEPTEMBER 1, 2015

SCOPE OF WORK DOCUMENTS:

A. Scope of Work – September 1, 2015 B. Quote Form C. Non Collusion Affidavit D. Targeted Small Business Forms E. Bidder Status Form F. Insurance Requirements G. Sex Offender Registry Acknowledge and Certification Form H. Bid Bond Form I. Payment Bond Form J. Performance Bond Form K. Technical Specifications

a. Division 23 – Heating Ventilation and Air Conditioning L. Drawings:

a. Cover Sheet – Sheet ME0 b. Level E Plan : Mechanical Demolition – Sheet MD1 c. Mechanical Symbols and Notes – Sheet M0 d. Level E Plan : Mechanical – Sheet M1 e. Mechanical Controls – Sheet M2 f. Mechanical Flow Diagrams – Sheet M3 g. Electrical Plans – Sheet E1

**There will be a pre-quote meeting at the site on Tuesday September 8,

2015 at 3:00 PM. Meet at North Entrance of Central Academy (1912 Grand Avenue). In order to quote this project a firm must have toured the

project site with a member of the Owner’s staff. If firm can’t attend the scheduled pre-quote meeting, contact Dave Berger by email to schedule a

time prior to September 4, 2015.** INSTRUCTIONS:

1. Submit quote documents on enclosed forms. Pricing to be submitted not later than 3:00 PM on September 17, 2015. Quotes are to be submitted to the Purchasing Agent of the Des Moines Public Schools at his office, Des Moines Public Schools, 1915 Prospect Road, Suite 1200, Des Moines, Iowa 50310.

2. Quotes are to be submitted in two envelopes (OUTER and INNER), each of which shall be clearly labeled as “BID DOCUMENTS”. a. INNER envelope shall be marked as “BID ENCLOSED” and include:

i. Quote Form ii. Bidder Status Form

b. OUTER envelope shall include: i. Bid Bond (5% of the amount of the quoted project cost)

ii. Non-Collusion Affidavit iii. Targeted Small Business (TSB) Form

c. The INNER envelope will not be opened in the event that the required documents to be included in the OUTER envelope are not present or fully executed.

3. Recognize any addenda on the quote form.

Central Academy – Boiler Replacement– Scope of Work Page 2

4. Questions shall be directed in writing to Dave Berger – [email protected] 5. Project Milestones are as follows:

a. Pre-Bid Meeting: September 8, 2015 b. Bids Due: September 17, 2015 c. Notice of Award: October 6, 2015 d. Substantial Completion: December 18, 2015

6. The successful firm will be notified on, or about, October 7, 2015. A purchase order will be provided from the Des Moines Public Schools.

7. Upon receipt of the purchase order the contractor shall submit any items requiring approval by the District.

8. Quote shall exclude all sales and use taxes. The District will provide exemption certificates.

9. The successful firm is required to sign the Sex Offender Acknowledgement and Certification form which is attached.

10. The successful firm shall submit an insurance certificate meeting the insurance requirements of the attached document.

11. 100% Performance and Payment bonds are required at the time of the purchase order from the successful contractor. Include the cost of these bonds in the quote price.

12. The Owner will obtain the general building permit if required. Contractors are responsible to obtain and pay for all required trade permits.

13. Payments will be made once a month based upon percentage of work completed. A 5% retainage will be withheld monthly until acceptance of all work.

14. Contractor is required to provide all security for their work area and for the safety of other persons.

15. The contractor shall not sell any items from the site or allow other parties to come in and salvage onsite. Any selling or salvaging shall be done off site after items have been removed by the demolition contractor.

16. The contractor shall only stage work in south parking area east of the Central Academy parking garage. Continued access to the school must be maintained, as directed by Des Moines Schools. The contractor’s work shall not interfere with normal traffic patterns within the parking garage.

17. Work can be done in the mechanical room during schools days if there is no adverse impact noise wise on the occupants.

18. Demolition contractor may park one dumpster in the south parking lot of Central Campus, east of Central Academy. Dumpster placement shall be approved by a representative of Des Moines Public Schools, prior to placement.

19. The work is to be done under one quote package. 20. The work shall be bid in a base quote.

BASE QUOTE – Remove and provide new boilers, boiler pumps, combustion air ductwork, boiler fuel ductwork and associated piping and electrical work. Work may begin on October 12, 2015. Any utility (gas, water, etc.) and electrical outage must be scheduled with Des Moines Schools. Work shall not result in the elimination of space heating to the Central Academy facility.

21. All work shall be fully complete and accepted by the Owner not later than December 18, 2015.

END OF SCOPE OF WORK

DES MOINES INDEPENDENT QUOTE FORM COMMUNITY SCHOOL DISTRICT CENTRAL ACADEMY – BOILER REPLACEMENT

QUOTES DUE NOT LATER THAN 3:00 PM ON SEPTEMBER 17, 2015 PROPOSAL FOR: CENTRAL ACADEMY – BOILER REPLACEMENT 1912 Grand Avenue, Des Moines, Iowa TO: Des Moines Independent Community School District 1915 Prospect Road Suite 1200

Des Moines, IA 50310

SUBMITTED BY:

Name of Bidder Des Moines Independent Community School District: The undersigned has examined the quote documents and hereby proposes and agrees to furnish and provide all products, materials, transportation, and services as required for the expeditious completion of the Work required in conformity with this quote request. The undersigned agrees that the quote, if accepted by the Owner, will be the basis for a purchase order with the Owner. The quote includes the required bonds and insurance coverage. The Contactor will provide the executed Acknowledgement and Certification form at the time the purchase order is completed. The bidder certifies that they walked the building with an Owner Representative prior to submitting this quote.

The undersigned further acknowledges the following Addenda:

NO. DATE

NO. DATE NO. DATE

QUOTES FOR CENTRAL ACADEMY – BOILER REPLACEMENT – QUOTE NO. Q7276 The undersigned proposes to provide the scope of work as specified for the lump sum price of: BASE QUOTE: _______________________________________________________________________________Dollars ($_____________________) F.O.B. DESTINATION EXCLUDING ALL TAXES. (Amount shall be shown in both words and figures. In case of discrepancy, the amount shown in words shall govern).

DES MOINES INDEPENDENT QUOTE FORM COMMUNITY SCHOOL DISTRICT CENTRAL ACADEMY – BOILER REPLACEMENT

The bidder is ( ) or is not ( ) an Iowa resident bidder as defined in Section 73A.21 of the Iowa code. If not a resident bidder, the bidder states that it is a non-resident bidder from the state of _____________. This state does ( ) or does not ( ) provide for a bidder preference for resident bidders. This state does ( ) or does not ( ) provide a labor preference for resident labor. If the state in which your company is a resident allows for either a bidder preference or a labor preference, please provide the citation to the code section, and the details of each preference allowed in your resident state. SUBMITTED BY:

Name of Bidder Address: Phone # Fax # Email address _______________________________________ ____________________________________ (Authorized Signature) Contractor’s License Number _________________________ Date of Expiration: ___________________________

DES MOINES INDEPENDENT NON-COLLUSION AFFIDAVIT COMMUNITY SCHOOL DISTRICT Page 1 CENTRAL ACADEMY – BOILER REPLACEMENT

MONROE ELEMENTARY – BOILER REPLACEMENT February 11, 2003

The Contractor and/or the sub-contractors, as applicable, shall provide this affidavit: NON-COLLUSION AFFIDAVIT TO BE EXECUTED BY BIDDER AND SUBMITTED WITH QUOTE. State of Iowa )

) ss. County of Polk ) being first duly sworn, deposes and says that he or she (Name) is _________________________________________ of ,

(Title) (Contractor) the party making the foregoing bid that the bid is not made in the interest of, or on the behalf of, any undisclosed person, partnership, company, association, organization, or corporation; that the bid is genuine and not collusive or sham; that the bidder has not directly or indirectly induced or solicited any other bidder to put in a false or sham bid, and has not directly or indirectly colluded, conspired, connived, or agreed with any bidder or anyone else to put in a sham bid, or that anyone shall refrain from bidding; that the bidder has not in any manner, directly or indirectly, sought by agreement, communication, or conference with anyone to fix the bid price of the bidder or any other bidder, or to fix any overhead, profit, or cost element of the bid price, or of that of any other bidder, or to secure any advantage against the public body awarding the contract of anyone interested in the proposed contract; that all statements contained in the bid are true; and, further, that the bidder has not, directly or indirectly, submitted his or her bid price or any breakdown thereof, or the contents thereof, or divulged information or data relative thereto, or paid, and will not pay, any fee to any corporation, partnership, company association, organization, bid depository, or to any member or agent thereto to effectuate a collusive or sham bid." The undersigned certifies under penalty of perjury that the foregoing is true and correct; THIS STATEMENT MUST BE NOTARIZED. NAME OF CONTRACTOR: BY: Signature Title Type/Print Name Date STATE OF __________________, COUNTY, ss: Subscribed and sworn to before me by the said on this day of , 2015. ____________________________________________

Notary Public in and for the State of ________

DES MOINES INDEPENDENT TSB FORMS COMMUNITY SCHOOL DISTRICT – Page 1 CENTRAL ACADEMY – BOILER REPLACEMENT If bidder is awarded the contract for this project, the bidder proposes for owner approval the award of a subcontract to the following certified Iowa TSB's: (if more room is needed, supply same information on second sheet and attach to this form) 1._____________________________________ ___________________________________ TSB Company Name Address

________________________________________________ $___________________

Description of Work Dollar Amount

2._____________________________________ _________________________________ TSB Company Name Address

________________________________________________ $____________________ Description of Work Dollar Amount

3._____________________________________ __________________________________ TSB Company Name Address

________________________________________________ $_____________________ Description of Work Dollar Amount

________________________________________________ ______________________ Bidder's Company Name Telephone No.

________________________________ _____________________ ______ ________ Address City State Zip Signature (Same person who signs proposal) Title Type/Print Name Date

THIS STATEMENT MUST BE NOTARIZED. STATE OF _______________, COUNTY, ss: Subscribed and sworn to before me by the said on this day of , 2015. ____________________________________

Notary Public in and for the State of _______

Bidders to supply all the following information

Bidder is _____ / is not _____ a certified Iowa Targeted Small Business, (TSB).

DES MOINES INDEPENDENT TSB FORMS COMMUNITY SCHOOL DISTRICT – Page 2 CENTRAL ACADEMY – BOILER REPLACEMENT If bidder did not contact any certified Targeted Small Businesses, then state why:

The following TSB's were contacted and declined to participate: (If more room is needed, supply same information on second sheet and attach to this form) 1. _____________________________________ ___________________________________ TSB Company Name Address

_______________________________________ _________________ _________________ Contact Name Date Contacted Telephone No.

_____________________________________________________________________________ Reason given for declining participation

2. _____________________________________ ___________________________________ TSB Company Name Address









Bidder Status Form

You must submit the completed form to the governmental body requesting bids per 875 Iowa Administrative Code Chapter 156.

This form has been approved by the Iowa Labor Commissioner.309-6001 02-14

My company is not a subsidiary of another business entity or my company is a subsidiary of another business entity that would qualify as a resident bidder in Iowa.

Part A To be completed by all biddersPlease answer “Yes” or “No” for each of the following:

If you answered “Yes” for each question above, your company qualifies as a resident bidder. Please complete Parts B and D of this form.If you answered “No” to one or more questions above, your company is a nonresident bidder. Please complete Parts C and D of this form.

My company has been conducting business in Iowa for at least 3 years prior to the first request for bids on this project.

My company is authorized to transact business in Iowa. (To help you determine if your company is authorized, please review the worksheet on the next page).

NoYes

My company has an office to transact business in Iowa.NoYesMy company’s office in Iowa is suitable for more than receiving mail, telephone calls, and e-mail.NoYes

NoYes

NoYes

Part B To be completed by resident bidders

My company has maintained offices in Iowa during the past 3 years at the following addresses:

Dates: to/ / / / Address:

City, State, Zip:

You may attach additional sheet(s) if needed.

Part C To be completed by non-resident bidders

1. Name of home state or foreign country reported to the Iowa Secretary of State:

2. Does your company’s home state or foreign country offer preferences to bidders who are residents? NoYes

3. If you answered “Yes” to question 2, identify each preference offered by your company’s home state or foreign country and the appropriate legal citation.


City, State, Zip:


City, State, Zip:

You may attach additional sheet(s) if needed.

Part D To be completed by all bidders

I certify that the statements made on this document are true and complete to the best of my knowledge and I know that my failure to provide accurate and truthful information may be a reason to reject my bid.

Firm Name:

Signature: Date:

Des Moines Independent Community School District

NON-COLLUSION AFFIDAVIT Document 00314 - 1

This worksheet may be used to help complete Part A of the Resident Bidder Status form. If at least one of the following describes your business, you are authorized to transact business in Iowa.

Worksheet: Authorization to Transact Business

My business is currently registered as a contractor with the Iowa Division of Labor.NoYes

My business is a sole proprietorship and I am an Iowa resident for Iowa income tax purposes.NoYes

My business is a general partnership or joint venture. More than 50 percent of the general partners or joint venture parties are residents of Iowa for Iowa income tax purposes.

NoYes

My business is an active corporation with the Iowa Secretary of State and has paid all fees required by the Secretary of State, has filed its most recent biennial report, and has not filed articles of dissolution.

NoYes

My business is a corporation whose articles of incorporation are filed in a state other than Iowa, the corporation has received a certificate of authority from the Iowa secretary of state, has filed its most recent biennial report with the secretary of state, and has neither received a certificate of withdrawal from the secretary of state nor had its authority revoked.

NoYes

My business is a limited liability partnership which has filed a statement of qualification in this state and the statement has not been canceled.

NoYes

My business is a limited liability partnership which has filed a statement of qualification in a state other than Iowa, has filed a statement of foreign qualification in Iowa and a statement of cancellation has not been filed.

NoYes

My business is a limited partnership or limited liability limited partnership which has filed a certificate of limited partnership in this state, and has not filed a statement of termination.

NoYes

My business is a limited partnership or a limited liability limited partnership whose certificate of limited partnership is filed in a state other than Iowa, the limited partnership or limited liability limited partnership has received notification from the Iowa secretary of state that the application for certificate of authority has been approved and no notice of cancellation has been filed by the limited partnership or the limited liability limited partnership.

NoYes

My business is a limited liability company whose certificate of organization is filed in Iowa and has not filed a statement of termination.

NoYes

My business is a limited liability company whose certificate of organization is filed in a state other than Iowa, has received a certificate of authority to transact business in Iowa and the certificate has not been revoked or canceled.

NoYes

309-6001 02-14

Des Moines Independent Community School District

NON-COLLUSION AFFIDAVIT Document 00314 - 2

DMPS INSURANCE REQUIREMENTS Insurance by Contractor The Contractor shall purchase and maintain such insurance as will protect it from claims set forth below which may arise out of or result from the Contractor’s operations under the Contract, whether such operations be by himself or by any subcontractor or by anyone directly or indirectly employed by any of them, or by anyone for whose acts any of them may be liable. All such insurance shall be subject to the approval of the District for adequacy of protection, and shall include a provision preventing cancellation without thirty (30) days’ prior notice to the District in writing.

Commercial General Liability Insurance

Each Occurrence $ 1,000,000 Damages to rented premises (each occurrence) $ 200,000 Medical Expenses (any one person) $ 10,000 Personal Injury $ 1,000,000 General aggregate $ 1,000,000 Products Complete Aggregate $ 1,000,000

Automobile Insurance

Combined single limi $ 1,000,000

Worker’s Compensation Insurance

In accordance with the laws of the State of Iowa covering all employees who perform any obligations assumed under the contract.

Each accident – minimum $ 500,000 Disease – minimum each employee $ 500,000

Upon selection, contractor will present certificates of insurance to the Des Moines Public Schools showing compliance with the forgoing requirements.

CENTRAL ACADEMY – BOILER REPLACEMENT

ACKNOWLEDGMENT AND CERTIFICATION (“Company”) is providing services to

[name of vendor/supplier/contractor/sub-contractor] the Des Moines Public School District (“District”) as a vendor, supplier, contractor or subcontractor and/or is operating or managing the operations of a vendor, supplier or contractor. The services provided by the Company may involve the presence of the Company’s employees upon the real property of the schools of the District.

The Company acknowledges that Iowa law prohibits a sex offender who has been

convicted of a sex offense against a minor from being present upon the real property of the schools of the District. The Company further acknowledges that, pursuant to law, a sex offender who has been convicted of a sex offense against a minor may not operate, manage, be employed by, or act as a contractor, vendor or supplier of services or volunteer at the schools of the District.

The Company hereby certifies that no one who is an owner, operator or manager

of the Company has been convicted of a sex offense against a minor. The Company further agrees that it shall not permit any person who is a sex offender convicted of a sex offense against a minor to provide any services to the District in accordance with the prohibitions set forth above.

This Acknowledgment and Certification is to be construed under the laws of the

State of Iowa. If any portion hereof is held invalid, the balance of the document shall, notwithstanding, continue in full legal force and effect.

In signing this Acknowledgment and Certification, the person signing on behalf of the Company hereby acknowledges that he/she has read this entire document, that he/she understands its terms, and that he/she not only has the authority to sign the document on behalf of the Company, but has signed it knowingly and voluntarily. Dated:______________________

[name of vendor/supplier/contractor/sub-contractor] By: ___________________________________

Printed Name: ___________________________________ Title: ______________________________________

DES MOINES INDEPENDENT BID BOND COMMUNITY SCHOOL DISTRICT Document 00410 – Page 1 CENTRAL ACADEMY – BOILER REPLACEMENT

February 5, 2003 PROPOSAL FORM TO BE SUBMITTED IN OUTER ENVELOPE

BID BOND

KNOW ALL PERSONS BY THESE PRESENTS, that we ________________ _________________________________________________________________ as Principal, and ________________________________________________________ as Surety, are held and firmly bound to the Des Moines Independent Community School District, hereinafter called the "School District," in the penal sum of _________________________________________________________ Dollars ($____________________), in lawful money of the United States, for the payment of which sum will and truly be made, we bind ourselves, our heirs, executors, administrators, and successors, jointly and severally, firmly, by these presents. The condition of this obligation is such that whereas the Principal has submitted the accompanying Bid, dated ____________________ for the project

Central Academy – Boiler Replacement

NOW, THEREFORE, if the Principal shall not withdraw said bid within the period specified therein after the opening of the same, or, if no period be specified, within forty-five (45) days after said opening, and shall, within the period specified therefore, or, if no period be specified, within seven (7) days after the prescribed forms are presented for signature, enter into a written Contract with the School District, in accordance with the bid, as accepted, and give bond with good and sufficient Surety or Sureties, as may be required for the faithful performance and proper fulfillment of such Contract, then the above obligation shall be void and of no effect, otherwise to remain in full force and virtue.

By virtue of statutory authority, the full amount of this Bid Bond shall be forfeited to the School District in liquidation of damages sustained in the event that the afore described bidder, Principal, fails to execute the Contract and provide the bond as provided in the Specifications or by law.

IN WITNESS WHEREOF, the parties have executed this instrument under their several seals this the

name and corporate seal of each corporate party being hereto affixed and these presents duly signed by the undersigned representatives pursuant to authority of the governing bodies.

(date) Principal

By:

(date) Surety

By: (Attach Power of Attorney of agent executing Bond)

END OF DOCUMENT

DES MOINES INDEPENDENT PAYMENT BOND COMMUNITY SCHOOL DISTRICT Document 00610 – Page 1 CENTRAL ACADEMY – BOILER REPLACEMENT

March 16, 2001

LABOR AND MATERIAL PAYMENT BOND Bond No. _____________

(This Bond is issued simultaneously with a Performance Bond in favor of the Owner conditioned on the full and timely performance of the Contract.)

KNOW ALL MEN BY THESE PRESENTS that ________________________________ ___________________________________________________as Principal (the “Principal”), and _____________________________________________________________________________, a corporation organized and existing under the laws of the State of _________________, and authorized to transact business in the State of Iowa, as Surety (the “Surety”), jointly and severally bind themselves, their heirs, personal representatives, successors, and assigns, to the DES MOINES INDEPENDENT COMMUNITY SCHOOL DISTRICT, 901 Walnut Street, Des Moines, Iowa 50309, as Obligee (the “Owner”), for the use and benefit of it and the claimants as defined below, in the principal amount of ___________________________________________________________ ($____________________) as adjusted by approved change orders (not to exceed 10 percent of the principal amount of this Bond unless expressly approved by the Surety, which approval shall not be unreasonably withheld) and interest as provided by law, for the payment of all amounts which become due under the Contract described below.

The Principal and the Owner have entered into a written Construction Agreement dated

______________________________, 2015, together with related “Contract Documents” as defined therein (all of which are collectively referred to as the “Contract” and incorporated herein by this reference), for the following Project:

CENTRAL ACADEMY – BOILER REPLACEMENT _____________________________________________________________________________ ______________________________________________________________________________

The condition of this obligation is such that, if the Principal shall at all times promptly make payment of all amounts, claims, or demands lawfully due to all persons, firms, associations, or corporations supplying or furnishing to the Principal or its subcontractors labor or materials, supplies, or equipment which are used, provided, or performed in the prosecution of the work provided for in the Contract and any and all duly authorized modifications of the Contract that may hereafter be made, then this obligation shall be null and void; otherwise, the Surety shall pay the full value of all such claims or demands and shall indemnify and hold the Owner harmless from all payments which the Owner may be required to make under the Contract or applicable law in excess of the Contract price not exceeding the amount of this obligation, together with interest as provided by law, as well as attorneys’ fees and costs incurred by the Owner in the resolution of any claim. All such subcontractors, laborers, and materialmen shall have rights under the within Bond as are set forth in the statutes and laws of the State of Iowa.

Further, each and every claimant, who institutes a lawsuit for compensation or payment under the

terms payment under the terms hereof, as part of any court award, shall be entitled to reasonable attorneys’ fees and costs.

The undersigned Surety for value received hereby agrees that no extension of time, change in, addition to, or other modification of the terms of the Contract or work to be performed thereunder, or of the

DES MOINES INDEPENDENT PAYMENT BOND COMMUNITY SCHOOL DISTRICT Document 00610 – Page 2 CENTRAL ACADEMY – BOILER REPLACEMENT

March 16, 2001

specifications, or of the Contract Documents, shall in any way affect its obligation on this Bond and the Surety hereby waives notice of any such extension of time, change, addition, or modification.

Any notice which any party desires or is required to provide another shall be in writing and shall be effective upon receipt when delivered or transmitted by personal delivery, certified (return receipt) mail, or express mail service to the addresses set forth herein.

IN WITNESS WHEREOF, said Principal and Surety have executed this Bond, this _______ day of

_____________________, 2015. ATTEST: __________________________________________

Principal

By:_______________________________________ Address:__________________________________

(SEAL) __________________________________________

ATTEST: __________________________________________

(Surety)

By:_______________________________________ Address:__________________________________

(SEAL) __________________________________________

Claims Telephone Number: ___________________ Claims Fax Number:_________________________

The fully executed Bond form must be accompanied by a current Power of Attorney.

END OF DOCUMENT

DES MOINES INDEPENDENT PERFORMANCE BOND FORM COMMUNITY SCHOOL DISTRICT Document 00620 – Page 1 CENTRAL ACADEMY – BOILER REPLACEMENT

March 16, 2001

PERFORMANCE BOND Bond No. _____________

KNOW ALL MEN BY THESE PRESENTS

That__________________________________________________________________________, as Principal (the “Principal”), and __________________________________________________________________, a corporation organized and existing under the laws of the State of , and authorized to transact business in the State of Iowa, as Surety (the “Surety”), jointly and severally, bind themselves, their heirs, personal representatives, successors, and assigns to the DES MOINES INDEPENDENT COMMUNITY SCHOOL DISTRICT, 901 Walnut Street, Des Moines, Iowa 50309, as Obligee (the “Owner”), in the principal amount of ______________________________________________________________________________($______________________) as adjusted by approved change orders (not to exceed 10 percent of the principal amount of this Bond unless expressly approved by the Surety, which approval shall not be unreasonably withheld) and interest as provided by law (collectively referred to herein as the “Penal Sum”), for the performance of the Construction Agreement between the Principal and the Owner, dated ________________________________, 2015, for the following (Project)

CENTRAL ACADEMY – BOILER REPLACEMENT

together with the obligations of the Contract Documents, as defined in the Construction Agreement, all of which documents are collectively referred to herein as the "Contract" and are incorporated by this reference.

The condition of this obligation is such that, if the Principal shall at all times duly, promptly, and properly perform all the terms and conditions of the Contract and any authorized modifications thereof during the original term of the Contract, any extensions thereof that may be granted by the Owner, and during the term of any guarantee or warranty required under the Contract, the Principal and Surety shall have no obligation under this Bond, otherwise it shall remain in full force and effect.

The Surety for value received agrees that no extension of time, change in, addition to, or other alteration or modification of the terms of the Contract or work to be performed thereunder, or any other forbearance on the part of either the Owner or the Principal to the other shall in any way release or affect the Surety's liability or obligation on this Bond, and the Surety hereby waives notice of any such extension of time, change, addition, modification, alteration, or forbearance.

Whenever the Owner terminates the Contract in accordance with the terms thereof, the Surety shall, within fifteen (15) calendar days after written notice of such termination, notify the Owner in writing of its election to complete the Contract in accordance with its terms, or notify the Owner that the Surety elects not to complete the Contract. If the Surety fails to give the written notice so required within such fifteen (15) calendar day period, then it will be deemed to have elected not to complete the Contract. Should the Surety elect to complete the Contract, then it shall, within fifteen (15) additional calendar days following written notice of such election, obtain a contractor, subject to approval by the Owner in writing, to complete the original Contract in accordance with its terms and conditions and thereafter proceed with the work with due diligence and make available as the work progresses sufficient funds to pay the cost of completion less the balance of the Contract price. The Surety may not engage the Principal to complete the Contract, without the prior written consent of


March 16, 2001

the Owner, which consent may be withheld in the Owner's sole discretion. If the Surety elects to complete the Contract, then it shall be entitled to receive the balance of the Contract price, less (i) any amounts paid by the Owner to the Principal; (ii) costs incurred by the Owner in correcting any defective work; (iii) any additional legal, design professional, and other costs incurred by the Owner resulting from the Principal's default; and (iv) liquidated damages caused by delayed performance or nonperformance of the Principal. Any progress payments, less retainage, due but not paid at the date of termination shall be paid to the Surety so long as the Surety has agreed to indemnify the Owner for the amount thereof and no other claims have been made to such funds by subcontractors or suppliers in accordance with the Contract or applicable law.

In the event the Surety elects not to complete the Contract, the Owner may then have the work completed by such means and in such manner, by contract with or without public bidding, or otherwise, as it may deem advisable. The Surety in such event shall at all times make available, as work progresses under the Contract between the Owner and its new contractor, sufficient funds, not to exceed the Penal Sum, to pay the cost of the completion of the Contract pursuant to its terms, together with the other amounts set forth in (i) through (iv) above, but in no event shall the Surety be responsible for the payment of any sums to the Owner until the Owner has paid in full its total obligation under the terms of the original Contract, plus change orders, less deductions and claims chargeable by law or by the Contract, if any, and less the retainage which will be disbursed as provided by the Contract Documents and applicable law.

The procedures set forth herein shall apply should there be a default and termination or a succession of defaults and terminations in fulfilling the terms and conditions of the work under the original Contract.

In the event there are negotiations between the Principal and/or the Surety and the Owner subsequent to the date of termination, each party shall appoint an authorized representative with authority to represent it during the negotiations. All written communications and official discussions between the parties shall be conducted by these authorized representatives. Any notice which any party desires or is required to provide another shall be in writing and shall be effective upon receipt when delivered or transmitted by personal delivery, certified (return receipt) mail, or express mail service to the addresses set forth herein.

Any proceeding, legal or equitable, under this Bond may be instituted in any court of competent jurisdiction in the location in which the work is located and shall be instituted before the expiration of three (3) years from the date on which final payment under the contract is made; provided, however, that this period may be extended by one (1) additional year by the Owner's giving written notice to the Surety within the three (3) year period of a potential claim. Any judgment recovered hereunder by the Owner shall include interest at the legal rate, together with reasonable attorneys' fees and costs.


March 16, 2001

No right action shall accrue under this Bond to or for the use of any person or entity other than the Owner or its successors and assigns.

IN WITNESS WHEREOF, the Principal and Surety have signed this Performance Bond as of the __________ day of ___________________, 2015. ATTEST: __________________________________________

Principal

By: ______________________________________ Address: __________________________________

(SEAL) __________________________________________

ATTEST: __________________________________________

(Surety)

By: ______________________________________ Address __________________________________

(SEAL) __________________________________________

Claims Telephone Number: ___________________ Claims Fax Number: ________________________

The fully executed bond form must be accompanied by a current Power of Attorney.

END OF DOCUMENT

DIVISION 23 – HEATING VENTILATION AND AIR CONDITIONING

TECHNICAL SPECIFICATIONS

DMPS CENTRAL ACEDEMY BOILER REPLACEMENT

DES MOINES, IOWA

230000

Division Section Title Pages

SPECIFICATIONS GROUP

DIVISION 23 - HEATING VENTILATING AND AIR CONDITIONING

230513 COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT 2

230519 METERS AND GAGES FOR HVAC PIPING 4

23052312 BALL VALVES FOR HVAC PIPING 3

23052313 BUTTERFLY VALVES FOR HVAC PIPING 4

23052314 CHECK VALVES FOR HVAC PIPING 5

230529 HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT 8

230553 IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT 5

230593 TESTING, ADJUSTING, AND BALANCING FOR HVAC 10

230719 HVAC PIPING INSULATION 10

230923 DIRECT DIGITAL CONTROL (DDC) SYSTEM FOR HVAC 19

23092327 TEMPERATURE INSTRUMENTS 5

231123 FACILITY NATURAL-GAS PIPING 7

232113 HYDRONIC PIPING 8

232116 HYDRONIC PIPING SPECIALTIES 4

232123 HYDRONIC PUMPS 4

23511311 DRAFT CONTROL FANS 4

235123 GAS VENTS 3

235216 CONDENSING BOILERS 7

235233 WATER-TUBE BOILERS 7

END OF TABLE OF CONTENTS

COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT 230513 - 1


DES MOINES, IOWA

230513

SECTION 230513 - COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes general requirements for single-phase and polyphase, general-purpose,

horizontal, small and medium, squirrel-cage induction motors for use on ac power systems up to

600 V and installed at equipment manufacturer's factory or shipped separately by equipment

manufacturer for field installation.

1.3 COORDINATION

A. Coordinate features of motors, installed units, and accessory devices to be compatible with the

following:

1. Motor controllers.

2. Torque, speed, and horsepower requirements of the load.

3. Ratings and characteristics of supply circuit and required control sequence.

4. Ambient and environmental conditions of installation location.

PART 2 - PRODUCTS

2.1 GENERAL MOTOR REQUIREMENTS

A. Comply with NEMA MG 1 unless otherwise indicated.

2.2 MOTOR CHARACTERISTICS

A. Duty: Continuous duty at ambient temperature of 40 deg C and at altitude of 3300 feet above

sea level.

B. Capacity and Torque Characteristics: Sufficient to start, accelerate, and operate connected loads

at designated speeds, at installed altitude and environment, with indicated operating sequence,

and without exceeding nameplate ratings or considering service factor.

COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT 230513 - 2


DES MOINES, IOWA

230513

2.3 POLYPHASE MOTORS

A. Description: NEMA MG 1, Design B, medium induction motor.

B. Efficiency: Energy efficient, as defined in NEMA MG 1.

C. Service Factor: 1.15.

D. Multispeed Motors: Variable torque.

1. For motors with 2:1 speed ratio, consequent pole, single winding.

2. For motors with other than 2:1 speed ratio, separate winding for each speed.

E. Rotor: Random-wound, squirrel cage.

F. Bearings: Regreasable, shielded, antifriction ball bearings suitable for radial and thrust loading.

G. Temperature Rise: Match insulation rating.

H. Insulation: Class F.

I. Enclosure Material: Cast iron for motor frame sizes 324T and larger; rolled steel for motor

frame sizes smaller than 324T.

2.4 SINGLE-PHASE MOTORS

A. Motors larger than 1/20 hp shall be one of the following, to suit starting torque and

requirements of specific motor application:

1. Permanent-split capacitor.

2. Split phase.

3. Capacitor start, inductor run.

4. Capacitor start, capacitor run.

B. Multispeed Motors: Variable-torque, permanent-split-capacitor type.

C. Bearings: Prelubricated, antifriction ball bearings or sleeve bearings suitable for radial and

thrust loading.

D. Motors 1/20 HP and Smaller: Shaded-pole type.

E. Thermal Protection: Internal protection to automatically open power supply circuit to motor

when winding temperature exceeds a safe value calibrated to temperature rating of motor

insulation. Thermal-protection device shall automatically reset when motor temperature returns

to normal range.

PART 3 - EXECUTION (Not Applicable)

END OF SECTION 230513

METERS AND GAGES FOR HVAC PIPING 230519 - 1


DES MOINES, IOWA

230519

SECTION 230519 - METERS AND GAGES FOR HVAC PIPING

PART 1 - GENERAL




1.2 SUMMARY

A. Section Includes:

1. Liquid-in-glass thermometers.

2. Thermowells.

3. Dial-type pressure gages.

4. Gage attachments.

5. Test plugs.

B. Related Sections:

1. Section 231123 "Facility Natural-Gas Piping" for gas meters.

PART 2 - PRODUCTS

2.1 LIQUID-IN-GLASS THERMOMETERS

A. Metal-Case, Compact-Style, Liquid-in-Glass Thermometers:

1. Standard: ASME B40.200.

2. Case: Cast aluminum; 6-inch nominal size.

3. Case Form: Straight unless otherwise indicated.

4. Tube: Glass with magnifying lens and blue or red organic liquid.

5. Tube Background: Nonreflective aluminum with permanently etched scale markings

graduated in deg F.

6. Window: Glass or plastic.

7. Stem: Aluminum or brass and of length to suit installation.

a. Design for Air-Duct Installation: With ventilated shroud.

b. Design for Thermowell Installation: Bare stem.

8. Connector: 3/4 inch, with ASME B1.1 screw threads.

9. Accuracy: Plus or minus 1 percent of scale range or one scale division, to a maximum of

1.5 percent of scale range.



DES MOINES, IOWA

230519

2.2 THERMOWELLS

A. Thermowells:


2. Description: Pressure-tight, socket-type fitting made for insertion into piping tee fitting.

3. Material for Use with Copper Tubing: CNR or CUNI.

4. Material for Use with Steel Piping: CRES or CSA.

5. Type: Stepped shank unless straight or tapered shank is indicated.

6. External Threads: NPS 1/2, NPS 3/4, or NPS 1, ASME B1.20.1 pipe threads.

7. Internal Threads: 1/2, 3/4, and 1 inch, with ASME B1.1 screw threads.

8. Bore: Diameter required to match thermometer bulb or stem.

9. Insertion Length: Length required to match thermometer bulb or stem.

10. Lagging Extension: Include on thermowells for insulated piping and tubing.

11. Bushings: For converting size of thermowell's internal screw thread to size of

thermometer connection.

B. Heat-Transfer Medium: Mixture of graphite and glycerin.

2.3 PRESSURE GAGES

A. Direct-Mounted, Metal-Case, Dial-Type Pressure Gages:


2. Case: Liquid-filled or Sealed type(s); cast aluminum or drawn steel; 4-1/2-inch nominal

diameter.

3. Pressure-Element Assembly: Bourdon tube unless otherwise indicated.

4. Pressure Connection: Brass, with NPS 1/4 or NPS 1/2, ASME B1.20.1 pipe threads and

bottom-outlet type unless back-outlet type is indicated.

5. Movement: Mechanical, with link to pressure element and connection to pointer.

6. Dial: Nonreflective aluminum with permanently etched scale markings graduated in psi.

7. Pointer: Dark-colored metal.

8. Window: Glass.

9. Ring: Metal.

10. Accuracy: Grade A, plus or minus 1 percent of middle half of scale range.

2.4 GAGE ATTACHMENTS

A. Snubbers: ASME B40.100, brass; with NPS 1/4 or NPS 1/2, ASME B1.20.1 pipe threads and

piston-type surge-dampening device. Include extension for use on insulated piping.

B. Valves: Brass ball or stainless-steel needle, with NPS 1/4 or NPS 1/2, ASME B1.20.1 pipe

threads.

2.5 TEST PLUGS

A. Description: Test-station fitting made for insertion into piping tee fitting.



DES MOINES, IOWA

230519

B. Body: Brass or stainless steel with core inserts and gasketed and threaded cap. Include extended

stem on units to be installed in insulated piping.

C. Thread Size: NPS 1/4 or NPS 1/2, ASME B1.20.1 pipe thread.

D. Minimum Pressure and Temperature Rating: 500 psig at 200 deg F.

E. Core Inserts: Chlorosulfonated polyethylene synthetic and EPDM self-sealing rubber.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install thermowells with socket extending a minimum of 2 inches into fluid and in vertical

position in piping tees.

B. Install thermowells of sizes required to match thermometer connectors. Include bushings if

required to match sizes.

C. Install thermowells with extension on insulated piping.

D. Fill thermowells with heat-transfer medium.

E. Install thermometers in thermowells and adjust vertical and tilted positions.

F. Install pressure gages in piping tees with pressure gage located on pipe at the most readable

position.

G. Install valve and snubber in piping for each pressure gage for fluids.

H. Install test plugs in piping tees.

I. Install permanent indicators on walls or brackets in accessible and readable positions.

J. Install connection fittings in accessible locations for attachment to portable indicators.

K. Install thermometers in the following locations:

1. Outlet of each hydronic boiler.

L. Install pressure gages in the following locations:

1. Suction and discharge of each pump.

2. Discharge of each hydronic boiler.

3.2 CONNECTIONS

A. Install meters and gages adjacent to machines and equipment to allow service and maintenance

of meters, gages, machines, and equipment.



DES MOINES, IOWA

230519

3.3 ADJUSTING

A. After installation, calibrate meters according to manufacturer's written instructions.

B. Adjust faces of meters and gages to proper angle for best visibility.

3.4 THERMOMETER SCALE-RANGE SCHEDULE

A. Scale Range for Heat Pump Loop-Water Piping: 0 to 150 deg F.

B. Scale Range for Heating, Hot-Water Piping: 0 to 250 deg F.

3.5 PRESSURE-GAGE SCALE-RANGE SCHEDULE

A. Scale Range for Condenser-Water Piping: 0 to 100 psi.


BALL VALVES FOR HVAC PIPING 230523.12 - 1


DES MOINES, IOWA

23052312

SECTION 230523.12 - BALL VALVES FOR HVAC PIPING

PART 1 - GENERAL




1.2 SUMMARY


1. Brass ball valves.

1.3 DEFINITIONS

A. CWP: Cold working pressure.

B. SWP: Steam working pressure.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Prepare valves for shipping as follows:

1. Protect internal parts against rust and corrosion.

2. Protect threads, flange faces, and weld ends.

3. Set ball valves open to minimize exposure of functional surfaces.

B. Use the following precautions during storage:

1. Maintain valve end protection.

2. Store valves indoors and maintain at higher-than-ambient-dew-point temperature. If

outdoor storage is necessary, store valves off the ground in watertight enclosures.

C. Use sling to handle large valves; rig sling to avoid damage to exposed parts. Do not use

operating handles or stems as lifting or rigging points.

PART 2 - PRODUCTS

2.1 GENERAL REQUIREMENTS FOR VALVES

A. Source Limitations for Valves: Obtain each type of valve from single source from single

manufacturer.



DES MOINES, IOWA

23052312

B. ASME Compliance:

1. ASME B1.20.1 for threads for threaded-end valves.

2. ASME B16.18 for solder-joint connections.

3. ASME B31.9 for building services piping valves.

C. Valve Pressure-Temperature Ratings: Not less than indicated and as required for system

pressures and temperatures.

D. Valve Sizes: Same as upstream piping unless otherwise indicated.

E. Valve Actuator Type: Handlever.

F. Valves in Insulated Piping:

1. Include 2-inch stem extensions.

2. Extended operating handle of nonthermal-conductive material, and protective sleeves that

allow operation of valves without breaking the vapor seals or disturbing insulation.

3. Memory stops that are fully adjustable after insulation is applied.

G. Valve Bypass and Drain Connections: MSS SP-45.

2.2 BRASS BALL VALVES

A. Two-Piece Brass Ball Valves with Full Port and Stainless-Steel Trim:

1. Description:

a. Standard: MSS SP-110.

b. SWP Rating: 150 psig.

c. CWP Rating: 600 psig.

d. Body Design: Two piece.

e. Body Material: Forged brass.

f. Ends: Threaded.

g. Seats: PTFE.

h. Stem: Stainless steel.

i. Ball: Stainless steel, vented.

j. Port: Full.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine valve interior for cleanliness, freedom from foreign matter, and corrosion. Remove

special packing materials, such as blocks, used to prevent disc movement during shipping and

handling.

B. Operate valves in positions from fully open to fully closed. Examine guides and seats made

accessible by such operations.



DES MOINES, IOWA

23052312

C. Examine threads on valve and mating pipe for form and cleanliness.

D. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper

size, length, and material. Verify that gasket is of proper size, that its material composition is

suitable for service, and that it is free from defects and damage.

E. Do not attempt to repair defective valves; replace with new valves.

3.2 VALVE INSTALLATION

A. Install valves with unions or flanges at each piece of equipment arranged to allow service,

maintenance, and equipment removal without system shutdown.

B. Locate valves for easy access and provide separate support where necessary.

C. Install valves in horizontal piping with stem at or above center of pipe.

D. Install valves in position to allow full stem movement.

E. Install valve tags. Comply with requirements in Section 230553 "Identification for HVAC

Piping and Equipment" for valve tags and schedules.

3.3 GENERAL REQUIREMENTS FOR VALVE APPLICATIONS

A. If valves with specified SWP classes or CWP ratings are unavailable, the same types of valves

with higher SWP classes or CWP ratings may be substituted.

B. Select valves with the following end connections:

1. For Copper Tubing, NPS 2 and Smaller: Threaded ends except where solder-joint valve-

end option is indicated in valve schedules below.

2. For Steel Piping, NPS 2 and Smaller: Threaded ends.

END OF SECTION 230523.12

BUTTERFLY VALVES FOR HVAC PIPING 230523.13 - 1


DES MOINES, IOWA

23052313

SECTION 230523.13 - BUTTERFLY VALVES FOR HVAC PIPING

PART 1 - GENERAL




1.2 SUMMARY


1. Iron, single-flange butterfly valves.

2. Iron, grooved-end butterfly valves.

1.3 DEFINITIONS


B. EPDM: Ethylene propylene copolymer rubber.

C. NBR: Acrylonitrile-butadiene, Buna-N, or nitrile rubber.

D. SWP: Steam working pressure.




2. Protect threads, flange faces, grooves, and weld ends.

3. Set butterfly valves closed or slightly open.



2. Store valves indoors and maintain at higher-than-ambient-dew-point temperature. If



handwheels or stems as lifting or rigging points.



DES MOINES, IOWA

23052313

PART 2 - PRODUCTS



manufacturer.

B. ASME Compliance:

1. ASME B16.1 for flanges on iron valves.

2. ASME B16.5 for pipe flanges and flanged fittings, NPS 1/2 through NPS 24.

3. ASME B16.10 and ASME B16.34 for ferrous valve dimensions and design criteria.

C. AWWA Compliance: Comply with AWWA C606 for grooved-end connections.

D. Valve Pressure-Temperature Ratings: Not less than indicated and as required for system


E. Valve Sizes: Same as upstream piping unless otherwise indicated.

F. Valve Actuator Types:

1. Handlever: For valves NPS 6 and smaller.

G. Valves in Insulated Piping: With 2-inch stem extensions with extended necks.

2.2 IRON, SINGLE-FLANGE BUTTERFLY VALVES

A. Iron, Single-Flange Butterfly Valves with Aluminum-Bronze Disc:

1. Description:

a. Standard: MSS SP-67, Type I.

b. CWP Rating: 150 psig.

c. Body Design: Lug type; suitable for bidirectional dead-end service at rated

pressure without use of downstream flange.

d. Body Material: ASTM A 126, cast iron or ASTM A 536, ductile iron.

e. Seat: EPDM OR NBR.

f. Stem: One- or two-piece stainless steel.

g. Disc: Aluminum bronze.

****** [OR] ******

B. Iron, Single-Flange Butterfly Valves with Ductile-Iron Disc:

1. Description:



c. Body Design: Lug type; suitable for bidirectional dead-end service at rated

pressure without use of downstream flange.



DES MOINES, IOWA

23052313

d. Body Material: ASTM A 126, cast iron or ASTM A 536, ductile iron.

e. Seat: EPDM OR NBR.

f. Stem: One- or two-piece stainless steel.

g. Disc: Nickel-plated ductile iron.

****** [OR] ******

2.3 DUCTILE-IRON, GROOVED-END BUTTERFLY VALVES

A. 175 CWP, Iron, Grooved-End Butterfly Valves:

1. Description:



c. Body Material: Coated, ductile iron.

d. Stem: Two-piece stainless steel.

e. Disc: Coated, ductile iron.

f. Seal: EPDM.

PART 3 - EXECUTION

3.1 EXAMINATION



handling.



C. Examine mating flange faces for damage. Check bolting for proper size, length, and material.

Verify that gasket is of proper size, that its material composition is suitable for service, and that

it is free from defects and damage.

D. Do not attempt to repair defective valves; replace with new valves.









DES MOINES, IOWA

23052313

E. Install valve tags. Comply with requirements in Section 230553 "Identification for HVAC

Piping and Equipment" for valve tags and schedules.

3.3 ADJUSTING

A. Adjust or replace valve packing after piping systems have been tested and put into service but

before final adjusting and balancing. Replace valves if persistent leaking occurs.


CHECK VALVES FOR HVAC PIPING 230523.14 - 1


DES MOINES, IOWA

23052314

SECTION 230523.14 - CHECK VALVES FOR HVAC PIPING

PART 1 - GENERAL




1.2 SUMMARY


1. Bronze swing check valves.

2. Iron swing check valves.

3. Iron, grooved-end swing check valves.

1.3 DEFINITIONS


B. EPDM: Ethylene propylene copolymer rubber.

C. NBR: Acrylonitrile-butadiene, Buna-N, or nitrile rubber.

D. SWP: Steam working pressure.




2. Protect threads, flange faces, grooves, and weld ends.

3. Block check valves in either closed or open position.



2. Store valves indoors and maintain at higher than ambient dew point temperature. If



handwheels or stems as lifting or rigging points.



DES MOINES, IOWA

23052314

PART 2 - PRODUCTS



manufacturer.

B. ASME Compliance:

1. ASME B1.20.1 for threads for threaded-end valves.

2. ASME B16.1 for flanges on iron valves.

3. ASME B16.10 and ASME B16.34 for ferrous valve dimensions and design criteria.

4. ASME B16.18 for solder joint.

C. AWWA Compliance: Comply with AWWA C606 for grooved-end connections.

D. Bronze valves shall be made with dezincification-resistant materials. Bronze valves made with

copper alloy (brass) containing more than 15 percent zinc are not permitted.

E. Valve Pressure-Temperature Ratings: Not less than indicated and as required for system


F. Valve Sizes: Same as upstream piping unless otherwise indicated.

G. Valve Bypass and Drain Connections: MSS SP-45.

2.2 BRONZE SWING CHECK VALVES

A. Class 125, Bronze Swing Check Valves with Bronze Disc:

1. Description:

a. Standard: MSS SP-80, Type 3.


c. Body Design: Horizontal flow.

d. Body Material: ASTM B 62, bronze.

e. Ends: Threaded.

f. Disc: Bronze.

2.3 IRON SWING CHECK VALVES

A. Class 125, Iron Swing Check Valves with Metal Seats:

1. Description:


b. NPS 2-1/2 to NPS 12, CWP Rating: 200 psig.

c. Body Design: Clear or full waterway.

d. Body Material: ASTM A 126, gray iron with bolted bonnet.



DES MOINES, IOWA

23052314

e. Ends: Flanged.

f. Trim: Bronze.

g. Gasket: Asbestos free.

2.4 IRON, GROOVED-END SWING CHECK VALVES

A. 300 CWP, Iron, Grooved-End Swing Check Valves:

1. Description:

a. CWP Rating: 300 psig.

b. Body Material: ASTM A 536, ductile iron.

c. Seal: EPDM.

d. Disc: Spring operated, ductile iron or stainless steel.

PART 3 - EXECUTION

3.1 EXAMINATION



handling.



C. Examine threads on valve and mating pipe for form and cleanliness.

D. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper

size, length, and material. Verify that gasket is of proper size, that its material composition is

suitable for service, and that it is free from defects and damage.

E. Do not attempt to repair defective valves; replace with new valves.







E. Install check valves in horizontal position with hinge pin level.



DES MOINES, IOWA

23052314

F. Install valve tags. Comply with requirements for valve tags and schedules in Section 230553

"Identification for HVAC Piping and Equipment."

3.3 ADJUSTING

A. Adjust or replace valve packing after piping systems have been tested and put into service but

before final adjusting and balancing. Replace valves if persistent leaking occurs.

3.4 GENERAL REQUIREMENTS FOR VALVE APPLICATIONS

A. If valve applications are not indicated, use the following:

1. Pump-Discharge Check Valves:

a. NPS 2 and Smaller: Bronze swing check valves with bronze disc.

b. NPS 2-1/2 and Larger: Iron swing check valves with lever and weight or with

spring or iron, center-guided, metal-seat check valves.

B. If valves with specified SWP classes or CWP ratings are unavailable, the same types of valves

with higher SWP classes or CWP ratings may be substituted.

C. Select valves, except wafer types, with the following end connections:

1. For Copper Tubing, NPS 2 and Smaller: Threaded ends except where solder-joint valve-

end option is indicated in valve schedules.

2. For Steel Piping, NPS 2 and Smaller: Threaded ends.

3. For Steel Piping, NPS 2-1/2 to NPS 4: Flanged ends except where threaded valve-end

option is indicated in valve schedules.

4. For Grooved-End Steel Piping: Valve ends may be grooved.

3.5 HEAT PUMP LOOP-WATER VALVE SCHEDULE

A. Pipe NPS 2 and Smaller:

1. Bronze Valves: May be provided with solder-joint ends instead of threaded ends.

2. Bronze Swing Check Valves: Class 125, bronze disc.

B. Pipe NPS 2-1/2 and Larger:

1. Iron Valves, NPS 2-1/2 to NPS 4: May be provided with threaded ends instead of flanged

ends.

2. Iron Swing Check Valves: Class 125, metal seats.

3. Iron, Grooved-End Check Valves, NPS 3 to NPS 12: 300 CWP.

3.6 HEATING-WATER VALVE SCHEDULE

A. Pipe NPS 2 and Smaller:



DES MOINES, IOWA

23052314

1. Bronze Valves: May be provided with solder-joint ends instead of threaded ends.

2. Bronze Swing Check Valves: Class 125, bronze disc.

B. Pipe NPS 2-1/2 and Larger:

1. Iron Valves, NPS 2-1/2 to NPS 4: May be provided with threaded ends instead of flanged

ends.

2. Iron Swing Check Valves: Class 125, metal seats.

3. Iron, Grooved-End Check Valves, NPS 3 to NPS 12: 300 CWP.


HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT 230529 - 1


DES MOINES, IOWA

230529

SECTION 230529 - HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL




1.2 SUMMARY


1. Metal pipe hangers and supports.

2. Trapeze pipe hangers.

3. Thermal-hanger shield inserts.

4. Fastener systems.

5. Equipment supports.

1.3 DEFINITIONS

A. MSS: Manufacturers Standardization Society of The Valve and Fittings Industry Inc.

1.4 PERFORMANCE REQUIREMENTS

A. Delegated Design: Design trapeze pipe hangers and equipment supports, including

comprehensive engineering analysis by a qualified professional engineer, using performance

requirements and design criteria indicated.

B. Structural Performance: Hangers and supports for HVAC piping and equipment shall withstand

the effects of gravity loads and stresses within limits and under conditions indicated according

to ASCE/SEI 7.

1. Design supports for multiple pipes, including pipe stands, capable of supporting

combined weight of supported systems, system contents, and test water.

2. Design equipment supports capable of supporting combined operating weight of

supported equipment and connected systems and components.

1.5 QUALITY ASSURANCE

A. Structural Steel Welding Qualifications: Qualify procedures and personnel according to

AWS D1.1/D1.1M, "Structural Welding Code - Steel."

B. Pipe Welding Qualifications: Qualify procedures and operators according to ASME Boiler and

Pressure Vessel Code.



DES MOINES, IOWA

230529

PART 2 - PRODUCTS

2.1 METAL PIPE HANGERS AND SUPPORTS

A. Carbon-Steel Pipe Hangers and Supports:

1. Description: MSS SP-58, Types 1 through 58, factory-fabricated components.

2. Galvanized Metallic Coatings: Pregalvanized or hot dipped.

3. Nonmetallic Coatings: Plastic coating, jacket, or liner.

4. Padded Hangers: Hanger with fiberglass or other pipe insulation pad or cushion to

support bearing surface of piping.

5. Hanger Rods: Continuous-thread rod, nuts, and washer made of carbon steel.

B. Copper Pipe Hangers:

1. Description: MSS SP-58, Types 1 through 58, copper-coated-steel, factory-fabricated

components.

2. Hanger Rods: Continuous-thread rod, nuts, and washer made of copper-coated steel or

stainless steel.

2.2 TRAPEZE PIPE HANGERS

A. Description: MSS SP-69, Type 59, shop- or field-fabricated pipe-support assembly made from

structural carbon-steel shapes with MSS SP-58 carbon-steel hanger rods, nuts, saddles, and U-

bolts.

2.3 THERMAL-HANGER SHIELD INSERTS

A. Insulation-Insert Material for Cold Piping: ASTM C 552, Type II cellular glass with 100-psig

or ASTM C 591, Type VI, Grade 1 polyisocyanurate with 125-psig minimum compressive

strength and vapor barrier.

B. Insulation-Insert Material for Hot Piping: Water-repellent treated, ASTM C 533, Type I

calcium silicate with 100-psig ASTM C 552, Type II cellular glass with 100-psig or

ASTM C 591, Type VI, Grade 1 polyisocyanurate with 125-psig minimum compressive

strength.

C. For Trapeze or Clamped Systems: Insert and shield shall cover entire circumference of pipe.

D. For Clevis or Band Hangers: Insert and shield shall cover lower 180 degrees of pipe.

E. Insert Length: Extend 2 inches beyond sheet metal shield for piping operating below ambient air

temperature.



DES MOINES, IOWA

230529

2.4 FASTENER SYSTEMS

A. Powder-Actuated Fasteners: Threaded-steel stud, for use in hardened portland cement concrete

with pull-out, tension, and shear capacities appropriate for supported loads and building

materials where used.

B. Mechanical-Expansion Anchors: Insert-wedge-type, zinc-coated steel anchors, for use in

hardened portland cement concrete; with pull-out, tension, and shear capacities appropriate for

supported loads and building materials where used.

2.5 EQUIPMENT SUPPORTS

A. Description: Welded, shop- or field-fabricated equipment support made from structural carbon-

steel shapes.

2.6 MISCELLANEOUS MATERIALS

A. Structural Steel: ASTM A 36/A 36M, carbon-steel plates, shapes, and bars; black and

galvanized.

B. Grout: ASTM C 1107, factory-mixed and -packaged, dry, hydraulic-cement, nonshrink and

nonmetallic grout; suitable for interior and exterior applications.

1. Properties: Nonstaining, noncorrosive, and nongaseous.

2. Design Mix: 5000-psi, 28-day compressive strength.

PART 3 - EXECUTION

3.1 HANGER AND SUPPORT INSTALLATION

A. Metal Pipe-Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Install hangers,

supports, clamps, and attachments as required to properly support piping from the building

structure.

B. Metal Trapeze Pipe-Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Arrange for

grouping of parallel runs of horizontal piping, and support together on field-fabricated trapeze

pipe hangers.

1. Pipes of Various Sizes: Support together and space trapezes for smallest pipe size or

install intermediate supports for smaller diameter pipes as specified for individual pipe

hangers.

2. Field fabricate from ASTM A 36/A 36M, carbon-steel shapes selected for loads being

supported. Weld steel according to AWS D1.1/D1.1M.

C. Thermal-Hanger Shield Installation: Install in pipe hanger or shield for insulated piping.

D. Fastener System Installation:



DES MOINES, IOWA

230529

1. Install powder-actuated fasteners for use in lightweight concrete or concrete slabs less

than 4 inches thick in concrete after concrete is placed and completely cured. Use

operators that are licensed by powder-actuated tool manufacturer. Install fasteners

according to powder-actuated tool manufacturer's operating manual.

2. Install mechanical-expansion anchors in concrete after concrete is placed and completely

cured. Install fasteners according to manufacturer's written instructions.

E. Install hangers and supports complete with necessary attachments, inserts, bolts, rods, nuts,

washers, and other accessories.

F. Equipment Support Installation: Fabricate from welded-structural-steel shapes.

G. Install hangers and supports to allow controlled thermal and seismic movement of piping

systems, to permit freedom of movement between pipe anchors, and to facilitate action of

expansion joints, expansion loops, expansion bends, and similar units.

H. Install lateral bracing with pipe hangers and supports to prevent swaying.

I. Install building attachments within concrete slabs or attach to structural steel. Install additional

attachments at concentrated loads, including valves, flanges, and strainers, NPS 2-1/2 and larger

and at changes in direction of piping.

J. Load Distribution: Install hangers and supports so that piping live and dead loads and stresses

from movement will not be transmitted to connected equipment.

K. Pipe Slopes: Install hangers and supports to provide indicated pipe slopes and to not exceed

maximum pipe deflections allowed by ASME B31.9 for building services piping.

L. Insulated Piping:

1. Attach clamps and spacers to piping.

a. Piping Operating above Ambient Air Temperature: Clamp may project through

insulation.

b. Piping Operating below Ambient Air Temperature: Use thermal-hanger shield

insert with clamp sized to match OD of insert.

c. Do not exceed pipe stress limits allowed by ASME B31.9 for building services

piping.

2. Install MSS SP-58, Type 39, protection saddles if insulation without vapor barrier is

indicated. Fill interior voids with insulation that matches adjoining insulation.

a. Option: Thermal-hanger shield inserts may be used. Include steel weight-

distribution plate for pipe NPS 4 and larger if pipe is installed on rollers.

3. Install MSS SP-58, Type 40, protective shields on cold piping with vapor barrier. Shields

shall span an arc of 180 degrees.

a. Option: Thermal-hanger shield inserts may be used. Include steel weight-

distribution plate for pipe NPS 4 and larger if pipe is installed on rollers.



DES MOINES, IOWA

230529

4. Shield Dimensions for Pipe: Not less than the following:

a. NPS 1/4 to NPS 3-1/2: 12 inches long and 0.048 inch thick.

b. NPS 4: 12 inches long and 0.06 inch thick.

5. Thermal-Hanger Shields: Install with insulation same thickness as piping insulation.

3.2 EQUIPMENT SUPPORTS

A. Fabricate structural-steel stands to suspend equipment from structure overhead or to support

equipment above floor.

B. Grouting: Place grout under supports for equipment and make bearing surface smooth.

C. Provide lateral bracing, to prevent swaying, for equipment supports.

3.3 METAL FABRICATIONS

A. Cut, drill, and fit miscellaneous metal fabrications for trapeze pipe hangers and equipment

supports.

B. Fit exposed connections together to form hairline joints. Field weld connections that cannot be

shop welded because of shipping size limitations.

C. Field Welding: Comply with AWS D1.1/D1.1M procedures for shielded, metal arc welding;

appearance and quality of welds; and methods used in correcting welding work; and with the

following:

1. Use materials and methods that minimize distortion and develop strength and corrosion

resistance of base metals.

2. Obtain fusion without undercut or overlap.

3. Remove welding flux immediately.

4. Finish welds at exposed connections so no roughness shows after finishing and so

contours of welded surfaces match adjacent contours.

3.4 ADJUSTING

A. Hanger Adjustments: Adjust hangers to distribute loads equally on attachments and to achieve

indicated slope of pipe.

B. Trim excess length of continuous-thread hanger and support rods to 1-1/2 inches.

3.5 PAINTING

A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately

after erecting hangers and supports. Use same materials as used for shop painting. Comply with

SSPC-PA 1 requirements for touching up field-painted surfaces.



DES MOINES, IOWA

230529

1. Apply paint by brush or spray to provide a minimum dry film thickness of 2.0 mils.

B. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply

galvanizing-repair paint to comply with ASTM A 780.

3.6 HANGER AND SUPPORT SCHEDULE

A. Specific hanger and support requirements are in Sections specifying piping systems and

equipment.

B. Comply with MSS SP-69 for pipe-hanger selections and applications that are not specified in

piping system Sections.

C. Use hangers and supports with galvanized metallic coatings for piping and equipment that will

not have field-applied finish.

D. Use nonmetallic coatings on attachments for electrolytic protection where attachments are in

direct contact with copper tubing.

E. Use carbon-steel pipe hangers and supports and metal trapeze pipe hangers and attachments for

general service applications.

F. Use copper-plated pipe hangers and copper or stainless-steel attachments for copper piping and

tubing.

G. Use padded hangers for piping that is subject to scratching.

H. Use thermal-hanger shield inserts for insulated piping and tubing.

I. Horizontal-Piping Hangers and Supports: Unless otherwise indicated and except as specified in

piping system Sections, install the following types:

1. Adjustable, Steel Clevis Hangers (MSS Type 1): For suspension of noninsulated or

insulated, stationary pipes NPS 1/2 to NPS 30.

2. Yoke-Type Pipe Clamps (MSS Type 2): For suspension of up to 1050 deg F, pipes NPS 4

to NPS 24, requiring up to 4 inches of insulation.

3. Carbon- or Alloy-Steel, Double-Bolt Pipe Clamps (MSS Type 3): For suspension of

pipes NPS 3/4 to NPS 36, requiring clamp flexibility and up to 4 inches of insulation.

4. Steel Pipe Clamps (MSS Type 4): For suspension of cold and hot pipes NPS 1/2 to

NPS 24 if little or no insulation is required.

5. Pipe Hangers (MSS Type 5): For suspension of pipes NPS 1/2 to NPS 4, to allow off-

center closure for hanger installation before pipe erection.

6. Adjustable, Swivel Split- or Solid-Ring Hangers (MSS Type 6): For suspension of

noninsulated, stationary pipes NPS 3/4 to NPS 8.

7. Adjustable, Steel Band Hangers (MSS Type 7): For suspension of noninsulated,

stationary pipes NPS 1/2 to NPS 8.

8. Adjustable Band Hangers (MSS Type 9): For suspension of noninsulated, stationary

pipes NPS 1/2 to NPS 8.

9. Adjustable, Swivel-Ring Band Hangers (MSS Type 10): For suspension of noninsulated,

stationary pipes NPS 1/2 to NPS 8.



DES MOINES, IOWA

230529

10. Split Pipe Ring with or without Turnbuckle Hangers (MSS Type 11): For suspension of


11. Extension Hinged or Two-Bolt Split Pipe Clamps (MSS Type 12): For suspension of


12. U-Bolts (MSS Type 24): For support of heavy pipes NPS 1/2 to NPS 30.

13. Clips (MSS Type 26): For support of insulated pipes not subject to expansion or

contraction.

14. Pipe Saddle Supports (MSS Type 36): For support of pipes NPS 4 to NPS 36, with steel-

pipe base stanchion support and cast-iron floor flange or carbon-steel plate.

15. Pipe Stanchion Saddles (MSS Type 37): For support of pipes NPS 4 to NPS 36, with

steel-pipe base stanchion support and cast-iron floor flange or carbon-steel plate, and

with U-bolt to retain pipe.

16. Adjustable Pipe Saddle Supports (MSS Type 38): For stanchion-type support for pipes

NPS 2-1/2 to NPS 36 if vertical adjustment is required, with steel-pipe base stanchion

support and cast-iron floor flange.

17. Single-Pipe Rolls (MSS Type 41): For suspension of pipes NPS 1 to NPS 30, from two

rods if longitudinal movement caused by expansion and contraction might occur.

J. Vertical-Piping Clamps: Unless otherwise indicated and except as specified in piping system

Sections, install the following types:

1. Extension Pipe or Riser Clamps (MSS Type 8): For support of pipe risers NPS 3/4 to

NPS 24.

2. Carbon- or Alloy-Steel Riser Clamps (MSS Type 42): For support of pipe risers NPS 3/4

to NPS 24 if longer ends are required for riser clamps.

K. Hanger-Rod Attachments: Unless otherwise indicated and except as specified in piping system


1. Steel Turnbuckles (MSS Type 13): For adjustment up to 6 inches for heavy loads.

2. Steel Clevises (MSS Type 14): For 120 to 450 deg F piping installations.

3. Swivel Turnbuckles (MSS Type 15): For use with MSS Type 11, split pipe rings.

4. Malleable-Iron Sockets (MSS Type 16): For attaching hanger rods to various types of

building attachments.

5. Steel Weldless Eye Nuts (MSS Type 17): For 120 to 450 deg F piping installations.

L. Building Attachments: Unless otherwise indicated and except as specified in piping system


1. Steel or Malleable Concrete Inserts (MSS Type 18): For upper attachment to suspend

pipe hangers from concrete ceiling.

M. Saddles and Shields: Unless otherwise indicated and except as specified in piping system


1. Steel-Pipe-Covering Protection Saddles (MSS Type 39): To fill interior voids with

insulation that matches adjoining insulation.

2. Protection Shields (MSS Type 40): Of length recommended in writing by manufacturer

to prevent crushing insulation.

3. Thermal-Hanger Shield Inserts: For supporting insulated pipe.



DES MOINES, IOWA

230529

N. Comply with MSS SP-69 for trapeze pipe-hanger selections and applications that are not

specified in piping system Sections.

O. Use powder-actuated fasteners or mechanical-expansion anchors instead of building

attachments where required in concrete construction.


IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT 230553 - 1


DES MOINES, IOWA

230553

SECTION 230553 - IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL




1.2 SUMMARY


1. Equipment labels.

2. Warning signs and labels.

3. Pipe labels.

4. Valve tags.

5. Warning tags.

1.3 ACTION SUBMITTALS

A. Valve Schedules: For each piping system to include in maintenance manuals.

PART 2 - PRODUCTS

2.1 EQUIPMENT LABELS

A. Metal Labels for Equipment:

1. Material and Thickness: Brass, 0.032-inch minimum thickness, and having predrilled or

stamped holes for attachment hardware.

2. Letter Color: White.

3. Background Color: Blue.

4. Minimum Label Size: Length and width vary for required label content, but not less than

2-1/2 by 3/4 inch.

5. Minimum Letter Size: 1/4 inch for name of units if viewing distance is less than 24

inches, 1/2 inch for viewing distances up to 72 inches, and proportionately larger lettering

for greater viewing distances. Include secondary lettering two-thirds to three-quarters the

size of principal lettering.

6. Fasteners: Stainless-steel rivets or self-tapping screws.

7. Adhesive: Contact-type permanent adhesive, compatible with label and with substrate.

B. Label Content: Include equipment's Drawing designation or unique equipment number,

Drawing numbers where equipment is indicated (plans, details, and schedules), and the

Specification Section number and title where equipment is specified.



DES MOINES, IOWA

230553

C. Equipment Label Schedule: For each item of equipment to be labeled, on 8-1/2-by-11-inch bond

paper. Tabulate equipment identification number, and identify Drawing numbers where

equipment is indicated (plans, details, and schedules) and the Specification Section number and

title where equipment is specified. Equipment schedule shall be included in operation and

maintenance data.

2.2 WARNING SIGNS AND LABELS

A. Material and Thickness: Multilayer, multicolor, plastic labels for mechanical engraving, 1/16

inch thick, and having predrilled holes for attachment hardware.

B. Letter Color: White.

C. Background Color: Red.

D. Maximum Temperature: Able to withstand temperatures up to 160 deg F.

E. Minimum Label Size: Length and width vary for required label content, but not less than 2-1/2

by 3/4 inch.

F. Minimum Letter Size: 1/4 inch for name of units if viewing distance is less than 24 inches, 1/2

inch for viewing distances up to 72 inches, and proportionately larger lettering for greater

viewing distances. Include secondary lettering two-thirds to three-quarters the size of principal

lettering.

G. Fasteners: Stainless-steel rivets or self-tapping screws.

H. Adhesive: Contact-type permanent adhesive, compatible with label and with substrate.

I. Label Content: Include caution and warning information plus emergency notification

instructions.

2.3 PIPE LABELS

A. General Requirements for Manufactured Pipe Labels: Preprinted, color-coded, with lettering

indicating service, and showing flow direction according to ASME A13.1.

B. Pretensioned Pipe Labels: Precoiled, semirigid plastic formed to cover full circumference of

pipe and to attach to pipe without fasteners or adhesive.

C. Self-Adhesive Pipe Labels: Printed plastic with contact-type, permanent-adhesive backing.

D. Pipe Label Contents: Include identification of piping service using same designations or

abbreviations as used on Drawings; also include pipe size and an arrow indicating flow

direction.

1. Flow-Direction Arrows: Integral with piping system service lettering to accommodate

both directions or as separate unit on each pipe label to indicate flow direction.

2. Lettering Size: Size letters according to ASME A13.1 for piping.



DES MOINES, IOWA

230553

2.4 VALVE TAGS

A. Description: Stamped or engraved with 1/4-inch letters for piping system abbreviation and 1/2-

inch numbers.

1. Tag Material: Brass, 0.032-inch minimum thickness, and having predrilled or stamped

holes for attachment hardware.

2. Fasteners: Brass wire-link chain or beaded chain.

B. Valve Schedules: For each piping system, on 8-1/2-by-11-inch bond paper. Tabulate valve

number, piping system, system abbreviation (as shown on valve tag), location of valve (room or

space), normal-operating position (open, closed, or modulating), and variations for

identification. Mark valves for emergency shutoff and similar special uses.

1. Valve-tag schedule shall be included in operation and maintenance data.

2.5 WARNING TAGS

A. Description: Preprinted or partially preprinted accident-prevention tags of plasticized card stock

with matte finish suitable for writing.

1. Size: 3 by 5-1/4 inches minimum.

2. Fasteners: Brass grommet and wire.

3. Nomenclature: Large-size primary caption such as "DANGER," "CAUTION," or "DO

NOT OPERATE."

4. Color: Safety-yellow background with black lettering.

PART 3 - EXECUTION

3.1 PREPARATION

A. Clean piping and equipment surfaces of substances that could impair bond of identification

devices, including dirt, oil, grease, release agents, and incompatible primers, paints, and

encapsulants.

3.2 GENERAL INSTALLATION REQUIREMENTS

A. Coordinate installation of identifying devices with completion of covering and painting of

surfaces where devices are to be applied.

B. Coordinate installation of identifying devices with locations of access panels and doors.

C. Install identifying devices before installing acoustical ceilings and similar concealment.

3.3 EQUIPMENT LABEL INSTALLATION

A. Install or permanently fasten labels on each major item of mechanical equipment.



DES MOINES, IOWA

230553

B. Locate equipment labels where accessible and visible.

3.4 PIPE LABEL INSTALLATION

A. Pipe Label Locations: Locate pipe labels where piping is exposed or above accessible ceilings

in finished spaces; machine rooms; accessible maintenance spaces such as shafts, tunnels, and

plenums; and exterior exposed locations as follows:

1. Near each valve and control device.

2. Near each branch connection, excluding short takeoffs for fixtures and terminal units.

Where flow pattern is not obvious, mark each pipe at branch.

3. Near penetrations and on both sides of through walls, floors, ceilings, and inaccessible

enclosures.

4. At access doors, manholes, and similar access points that permit view of concealed

piping.

5. Near major equipment items and other points of origination and termination.

6. Spaced at maximum intervals of 25 feet along each run. Reduce intervals to in areas of

congested piping and equipment.

7. On piping above removable acoustical ceilings. Omit intermediately spaced labels.

B. Directional Flow Arrows: Arrows shall be used to indicate direction of flow in pipes, including

pipes where flow is allowed in both directions.

C. Pipe Label Color Schedule:

1. Loop-Water Piping: White letters on a safety-green background.

2. Heating Water Piping: White letters on a safety-green background.

3.5 VALVE-TAG INSTALLATION

A. Install tags on valves and control devices in piping systems, except check valves, valves within

factory-fabricated equipment units, shutoff valves, faucets, convenience and lawn-watering hose

connections, and HVAC terminal devices and similar roughing-in connections of end-use

fixtures and units. List tagged valves in a valve schedule.

B. Valve-Tag Application Schedule: Tag valves according to size, shape, and color scheme and

with captions similar to those indicated in the following subparagraphs:

1. Valve-Tag Size and Shape:

a. Loop Water: 1-1/2 inches, round.

b. Hot Water: 1-1/2 inches, round.

c. Gas: 1-1/2 inches, round.

2. Valve-Tag Colors:

a. Flammable Fluids: Black letters on a safety-yellow background.

b. Water: White letters on a safety-green background.



DES MOINES, IOWA

230553

c. Defined by User: White letters on a safety-purple background, black letters on a

safety-white background, white letters on a safety-gray background, and white

letters on a safety-black background

3.6 WARNING-TAG INSTALLATION

A. Write required message on, and attach warning tags to, equipment and other items where

required.


TESTING, ADJUSTING, AND BALANCING FOR HVAC 230593 - 1


DES MOINES, IOWA

230593

SECTION 230593 - TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 - GENERAL




1.2 SUMMARY


1. Balancing Hydronic Piping Systems:

a. Constant-flow hydronic systems.

b. Primary-secondary hydronic systems.

2. Testing, Adjusting, and Balancing Equipment:

a. Motors.

b. Boilers.

3. Control system verification.

1.3 DEFINITIONS

A. BAS: Building automation systems.

B. NEBB: National Environmental Balancing Bureau.

C. TAB: Testing, adjusting, and balancing.

D. TABB: Testing, Adjusting, and Balancing Bureau.

E. TAB Specialist: An independent entity meeting qualifications to perform TAB work.

F. TDH: Total dynamic head.

1.4 INFORMATIONAL SUBMITTALS

A. Qualification Data: Within 60 days of Contractor's Notice to Proceed, submit documentation

that the TAB specialist and this Project's TAB team members meet the qualifications specified

in "Quality Assurance" Article.



DES MOINES, IOWA

230593

B. Strategies and Procedures Plan: Within 60 days of Contractor's Notice to Proceed, submit TAB

strategies and step-by-step procedures as specified in "Preparation" Article.

C. Certified TAB reports.

D. Sample report forms.

E. Instrument calibration reports, to include the following:

1. Instrument type and make.

2. Serial number.

3. Application.

4. Dates of use.

5. Dates of calibration.


A. TAB Specialists Qualifications: Certified by AABC, NEBB, or TABB.

1. TAB Field Supervisor: Employee of the TAB specialist and certified by AABC, NEBB,

or TABB.

2. TAB Technician: Employee of the TAB specialist and certified by AABC, NEBB, or

TABB as a TAB technician.

B. Instrumentation Type, Quantity, Accuracy, and Calibration: Comply with requirements in

ASHRAE 111, Section 4, "Instrumentation."

C. ASHRAE/IESNA Compliance: Applicable requirements in ASHRAE/IESNA 90.1,

Section 6.7.2.3 - "System Balancing."

1.6 FIELD CONDITIONS

A. Full Owner Occupancy: Owner will occupy the site and existing building during entire TAB

period. Cooperate with Owner during TAB operations to minimize conflicts with Owner's

operations.

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine the Contract Documents to become familiar with Project requirements and to discover

conditions in systems designs that may preclude proper TAB of systems and equipment.



DES MOINES, IOWA

230593

B. Examine installed systems for balancing devices, such as test ports, gage cocks, thermometer

wells, flow-control devices, and balancing valves and fittings. Verify that locations of these

balancing devices are applicable for intended purpose and are accessible.

C. Examine the approved submittals for HVAC systems and equipment.

D. Examine design data including HVAC system descriptions, statements of design assumptions

for environmental conditions and systems output, and statements of philosophies and

assumptions about HVAC system and equipment controls.

E. Examine equipment performance data including pump curves.

1. Relate performance data to Project conditions and requirements, including system effects

that can create undesired or unpredicted conditions that cause reduced capacities in all or

part of a system.

2. Calculate system-effect factors to reduce performance ratings of HVAC equipment when

installed under conditions different from the conditions used to rate equipment

performance. Compare results with the design data and installed conditions.

F. Examine system and equipment installations and verify that field quality-control testing,

cleaning, and adjusting specified in individual Sections have been performed.

G. Examine test reports specified in individual system and equipment Sections.

H. Examine HVAC equipment and verify that bearings are greased, filters are clean, and

equipment with functioning controls is ready for operation.

I. Examine strainers. Verify that startup screens have been replaced by permanent screens with

indicated perforations.

J. Examine system pumps to ensure absence of entrained air in the suction piping.

K. Examine operating safety interlocks and controls on HVAC equipment.

L. Report deficiencies discovered before and during performance of TAB procedures. Observe and

record system reactions to changes in conditions. Record default set points if different from

indicated values.

3.2 PREPARATION

A. Prepare a TAB plan that includes the following:

1. Equipment and systems to be tested.

2. Strategies and step-by-step procedures for balancing the systems.

3. Instrumentation to be used.

4. Sample forms with specific identification for all equipment.

B. Perform system-readiness checks of HVAC systems and equipment to verify system readiness

for TAB work. Include, at a minimum, the following:

1. Hydronics:



DES MOINES, IOWA

230593

a. Verify leakage and pressure tests on water distribution systems have been

satisfactorily completed.

b. Piping is complete with terminals installed.

c. Water treatment is complete.

d. Systems are flushed, filled, and air purged.

e. Strainers are pulled and cleaned.

f. Shutoff and balance valves have been verified to be 100 percent open.

g. Pumps are started and proper rotation is verified.

h. Pump gage connections are installed directly at pump inlet and outlet flanges or in

discharge and suction pipe prior to valves or strainers.

i. Suitable access to balancing devices and equipment is provided.

3.3 GENERAL PROCEDURES FOR TESTING AND BALANCING

A. Perform testing and balancing procedures on each system according to the procedures contained

in AABC's "National Standards for Total System Balance," ASHRAE 111, NEBB's "Procedural

Standards for Testing, Adjusting, and Balancing of Environmental Systems," or SMACNA's

"HVAC Systems - Testing, Adjusting, and Balancing" and in this Section.

B. Cut insulation, pipes, and equipment cabinets for installation of test probes to the minimum

extent necessary for TAB procedures.

1. After testing and balancing, patch probe holes in ducts with same material and thickness

as used to construct ducts.

2. Install and join new insulation that matches removed materials. Restore insulation,

coverings, vapor barrier, and finish according to Section 230719 "HVAC Piping

Insulation."

C. Mark equipment and balancing devices, including damper-control positions, valve position

indicators, fan-speed-control levers, and similar controls and devices, with paint or other

suitable, permanent identification material to show final settings.

D. Take and report testing and balancing measurements in inch-pound (IP) units.

3.4 GENERAL PROCEDURES FOR HYDRONIC SYSTEMS

A. Prepare test reports for pumps, coils, and heat exchangers. Obtain approved submittals and

manufacturer-recommended testing procedures. Crosscheck the summation of required coil and

heat exchanger flow rates with pump design flow rate.

B. Prepare schematic diagrams of systems' "as-built" piping layouts.

C. In addition to requirements in "Preparation" Article, prepare hydronic systems for testing and

balancing as follows:

1. Check liquid level in expansion tank.

2. Check highest vent for adequate pressure.

3. Locate start-stop and disconnect switches, electrical interlocks, and motor starters.

4. Verify that motor starters are equipped with properly sized thermal protection.



DES MOINES, IOWA

230593

5. Check that air has been purged from the system.

3.5 PROCEDURES FOR CONSTANT-FLOW HYDRONIC SYSTEMS

A. Adjust pumps to deliver total design gpm.

1. Measure total water flow.

a. Measure flow by main flow meter, if installed.

b. If main flow meter is not installed, determine flow by pump TDH or exchanger

pressure drop.

2. Measure pump TDH as follows:

a. Measure discharge pressure directly at the pump outlet flange or in discharge pipe

prior to any valves.

b. Measure inlet pressure directly at the pump inlet flange or in suction pipe prior to

any valves or strainers.

c. Convert pressure to head and correct for differences in gage heights.

d. Verify pump impeller size by measuring the TDH with the discharge valve closed.

Note the point on manufacturer's pump curve at zero flow, and verify that the

pump has the intended impeller size.

e. With valves open, read pump TDH. Adjust pump discharge valve until design

water flow is achieved.

3. Monitor motor performance during procedures and do not operate motor in an overloaded

condition.

B. Adjust flow-measuring devices installed in mains and branches to design water flows.

1. Measure flow in main and branch pipes.

2. Adjust main and branch balance valves for design flow.

3. Re-measure each main and branch after all have been adjusted.

C. Adjust flow-measuring devices installed at terminals for each space to design water flows.

1. Measure flow at terminals.

2. Adjust each terminal to design flow.

3. Re-measure each terminal after it is adjusted.

4. Perform temperature tests after flows have been balanced.

D. Verify final system conditions as follows:

1. Re-measure and confirm that total water flow is within design.

2. Re-measure final pumps' operating data, TDH, volts, amps, and static profile.

3. Mark final settings.

E. Verify that memory stops have been set.



DES MOINES, IOWA

230593

3.6 PROCEDURES FOR PRIMARY-SECONDARY HYDRONIC SYSTEMS

A. Secondary side is outside the scope of this project.

B. Adjust primary pumps to deliver total design gpm.

1. Measure total water flow.

a. Position valves for full flow through boilers.

b. Determine flow by pump TDH or boiler pressure drop.

2. Measure pump TDH as follows:

a. Measure discharge pressure directly at the pump outlet flange or in discharge pipe

prior to any valves.

b. Measure inlet pressure directly at the pump inlet flange or in suction pipe prior to

any valves or strainers.

c. Convert pressure to head and correct for differences in gage heights.

d. Verify pump impeller size by measuring the TDH with the discharge valve closed.

Note the point on manufacturer's pump curve at zero flow and verify that the pump

has the intended impeller size.

e. With valves open, read pump TDH. Adjust pump discharge valve until design

water flow is achieved.

3. Monitor motor performance during procedures and do not operate motor in an overloaded

condition.

C. Adjust flow-measuring devices installed in mains and branches to design water flows.

1. Measure flow in main and branch pipes.

2. Adjust main and branch balance valves for design flow.

3. Re-measure each main and branch after all have been adjusted.

D. Verify final system conditions as follows:

1. Re-measure and confirm that total water flow is within design.

2. Re-measure final pumps' operating data, TDH, volts, amps, and static profile.

3. Mark final settings.

E. Verify that memory stops have been set.

3.7 PROCEDURES FOR MOTORS

A. Motors 1/2 HP and Larger: Test at final balanced conditions and record the following data:

1. Manufacturer's name, model number, and serial number.

2. Motor horsepower rating.

3. Motor rpm.

4. Phase and hertz.

5. Nameplate and measured voltage, each phase.

6. Nameplate and measured amperage, each phase.



DES MOINES, IOWA

230593

7. Starter size and thermal-protection-element rating.

8. Service factor and frame size.

3.8 PROCEDURES FOR BOILERS

A. Hydronic Boilers:

1. Measure and record entering- and leaving-water temperatures.

2. Measure and record water flow.

3. Record relief valve pressure setting.

3.9 CONTROLS VERIFICATION

A. In conjunction with system balancing, perform the following:

1. Verify temperature control system is operating within the design limitations.

2. Confirm that the sequences of operation are in compliance with Contract Documents.

3. Verify that controllers are calibrated and function as intended.

4. Verify that controller set points are as indicated.

5. Verify the operation of lockout or interlock systems.

6. Verify the operation of valve actuators.

7. Verify that controlled devices are properly installed and connected to correct controller.

8. Verify that controlled devices travel freely and are in position indicated by controller:

open, closed, or modulating.

9. Verify location and installation of sensors to ensure that they sense only intended

temperature, humidity, or pressure.

B. Reporting: Include a summary of verifications performed, remaining deficiencies, and

variations from indicated conditions.

3.10 TOLERANCES

A. Set HVAC system's water flow rates within the following tolerances:

1. Heating-Water Flow Rate: Plus or minus 10 percent.

3.11 FINAL REPORT

A. General: Prepare a certified written report; tabulate and divide the report into separate sections

for tested systems and balanced systems.

1. Include a certification sheet at the front of the report's binder, signed and sealed by the

certified testing and balancing engineer.

2. Include a list of instruments used for procedures, along with proof of calibration.

3. Certify validity and accuracy of field data.

B. Final Report Contents: In addition to certified field-report data, include the following:



DES MOINES, IOWA

230593

1. Pump curves.

2. Manufacturers' test data.

3. Field test reports prepared by system and equipment installers.

4. Other information relative to equipment performance; do not include Shop Drawings and

Product Data.

C. General Report Data: In addition to form titles and entries, include the following data:

1. Title page.

2. Name and address of the TAB specialist.

3. Project name.

4. Project location.

5. Architect's name and address.

6. Engineer's name and address.

7. Contractor's name and address.

8. Report date.

9. Signature of TAB supervisor who certifies the report.

10. Table of Contents with the total number of pages defined for each section of the report.

Number each page in the report.

11. Summary of contents including the following:

a. Indicated versus final performance.

b. Notable characteristics of systems.

c. Description of system operation sequence if it varies from the Contract

Documents.

12. Nomenclature sheets for each item of equipment.

13. Data for terminal units, including manufacturer's name, type, size, and fittings.

14. Notes to explain why certain final data in the body of reports vary from indicated values.

D. System Diagrams: Include schematic layouts of hydronic distribution systems. Present each

system with single-line diagram and include the following:

1. Water flow rates.

2. Pipe and valve sizes and locations.

3. Balancing stations.

4. Position of balancing devices.

E. Boiler Test Reports: In addition to manufacturer's factory startup equipment reports, include the

following:

1. Unit Data:

a. System identification.

b. Location.

c. Make and type.

d. Model number and unit size.

e. Manufacturer's serial number.

f. Fuel type in input data.

g. Output capacity in Btu/h.

h. Ignition type.



DES MOINES, IOWA

230593

i. Burner-control types.

j. Motor horsepower and rpm.

k. Motor volts, phase, and hertz.

l. Motor full-load amperage and service factor.

2. Test Data (Indicated and Actual Values):

a. Low-fire fuel input in Btu/h.

b. High-fire fuel input in Btu/h.

c. Manifold pressure in psig.

d. High-temperature-limit setting in deg F.

e. Operating set point in Btu/h.

f. Motor voltage at each connection.

g. Motor amperage for each phase.

h. Heating value of fuel in Btu/h.

i. Entering water temperature in deg F.

j. Leaving water temperature in deg F.

k. Water pressure drop in feet of head or psig.

F. Pump Test Reports: Calculate impeller size by plotting the shutoff head on pump curves and

include the following:

1. Unit Data:

a. Unit identification.

b. Location.

c. Service.

d. Make and size.

e. Model number and serial number.

f. Water flow rate in gpm.

g. Water pressure differential in feet of head or psig.

h. Required net positive suction head in feet of head or psig.

i. Pump rpm.

j. Impeller diameter in inches.

k. Motor make and frame size.

l. Motor horsepower and rpm.

m. Voltage at each connection.

n. Amperage for each phase.

o. Full-load amperage and service factor.

p. Seal type.

2. Test Data (Indicated and Actual Values):

a. Static head in feet of head or psig.

b. Pump shutoff pressure in feet of head or psig.

c. Actual impeller size in inches.

d. Full-open flow rate in gpm.

e. Full-open pressure in feet of head or psig.

f. Final discharge pressure in feet of head or psig.

g. Final suction pressure in feet of head or psig.

h. Final total pressure in feet of head or psig.



DES MOINES, IOWA

230593

i. Final water flow rate in gpm.

j. Voltage at each connection.

k. Amperage for each phase.

G. Instrument Calibration Reports:

1. Report Data:

a. Instrument type and make.

b. Serial number.

c. Application.

d. Dates of use.

e. Dates of calibration.

3.12 ADDITIONAL TESTS

A. Within 90 days of completing TAB, perform additional TAB to verify that balanced conditions

are being maintained throughout and to correct unusual conditions.

B. Seasonal Periods: If initial TAB procedures were not performed during near-peak summer and

winter conditions, perform additional TAB during near-peak summer and winter conditions.


HVAC PIPING INSULATION 230719 - 1


DES MOINES, IOWA

230719

SECTION 230719 - HVAC PIPING INSULATION

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes insulating the following HVAC piping systems:

1. Heat pump loop-water piping.

2. Heating hot-water piping, indoors.


A. Installer Qualifications: Skilled mechanics who have successfully completed an apprenticeship

program or another craft training program certified by the Department of Labor, Bureau of

Apprenticeship and Training.

B. Surface-Burning Characteristics: For insulation and related materials, as determined by testing

identical products according to ASTM E 84, by a testing and inspecting agency acceptable to

authorities having jurisdiction. Factory label insulation and jacket materials and adhesive,

mastic, tapes, and cement material containers, with appropriate markings of applicable testing

agency.

1. Insulation Installed Indoors: Flame-spread index of 25 or less, and smoke-developed

index of 50 or less.

2. Insulation Installed Outdoors: Flame-spread index of 75 or less, and smoke-developed

index of 150 or less.


A. Packaging: Insulation material containers shall be marked by manufacturer with appropriate

ASTM standard designation, type and grade, and maximum use temperature.

1.5 COORDINATION

A. Coordinate sizes and locations of supports, hangers, and insulation shields specified in

Section 230529 "Hangers and Supports for HVAC Piping and Equipment."

B. Coordinate clearance requirements with piping Installer for piping insulation application.

Before preparing piping Shop Drawings, establish and maintain clearance requirements for



DES MOINES, IOWA

230719

installation of insulation and field-applied jackets and finishes and for space required for

maintenance.

1.6 SCHEDULING

A. Schedule insulation application after pressure testing systems and, where required, after

installing and testing heat tracing. Insulation application may begin on segments that have

satisfactory test results.

B. Complete installation and concealment of plastic materials as rapidly as possible in each area of

construction.

PART 2 - PRODUCTS

2.1 INSULATION MATERIALS

A. Comply with requirements in "Piping Insulation Schedule, General," "Indoor Piping Insulation

Schedule," "Outdoor, Aboveground Piping Insulation Schedule," and "Outdoor, Underground

Piping Insulation Schedule" articles for where insulating materials shall be applied.

B. Products shall not contain asbestos, lead, mercury, or mercury compounds.

C. Products that come in contact with stainless steel shall have a leachable chloride content of less

than 50 ppm when tested according to ASTM C 871.

D. Insulation materials for use on austenitic stainless steel shall be qualified as acceptable

according to ASTM C 795.

E. Foam insulation materials shall not use CFC or HCFC blowing agents in the manufacturing

process.

F. Mineral-Fiber Blanket Insulation: Mineral or glass fibers bonded with a thermosetting resin.

Comply with ASTM C 553, Type II and ASTM C 1290, Type II with factory-applied vinyl

jacket. Factory-applied jacket requirements are specified in "Factory-Applied Jackets" Article.

G. Mineral-Fiber, Preformed Pipe Insulation:

1. Type I, 850 deg F Materials: Mineral or glass fibers bonded with a thermosetting resin.

Comply with ASTM C 547, Type I, Grade A, with factory-applied ASJ or ASJ-SSL.

Factory-applied jacket requirements are specified in "Factory-Applied Jackets" Article.

H. Mineral-Fiber, Pipe Insulation Wicking System: Preformed pipe insulation complying with

ASTM C 547, Type I, Grade A, with absorbent cloth factory-applied to the entire inside surface

of preformed pipe insulation and extended through the longitudinal joint to outside surface of

insulation under insulation jacket. Factory apply a white, polymer, vapor-retarder jacket with

self-sealing adhesive tape seam and evaporation holes running continuously along the

longitudinal seam, exposing the absorbent cloth.



DES MOINES, IOWA

230719

I. Mineral-Fiber, Pipe and Tank Insulation: Mineral or glass fibers bonded with a thermosetting

resin. Semirigid board material with factory-applied ASJ complying with ASTM C 1393,

Type II or Type IIIA Category 2, or with properties similar to ASTM C 612, Type IB. Nominal

density is 2.5 lb/cu. ft. or more. Thermal conductivity (k-value) at 100 deg F is 0.29 Btu x in./h

x sq. ft. x deg F or less. Factory-applied jacket requirements are specified in "Factory-Applied

Jackets" Article.

J. Polyisocyanurate: Unfaced, preformed, rigid cellular polyisocyanurate material intended for use

as thermal insulation.

1. Comply with ASTM C 591, Type I or Type IV, except thermal conductivity (k-value)

shall not exceed 0.19 Btu x in./h x sq. ft. x deg F at 75 deg F after 180 days of aging.

2. Flame-spread index shall be 25 or less, and smoke-developed index shall be 50 or less for

thickness up to 1 inch as tested by ASTM E 84.

3. Fabricate shapes according to ASTM C 450 and ASTM C 585.

4. Factory-Applied Jacket: Requirements are specified in "Factory-Applied Jackets" Article.

a. Pipe Applications: ASJ or ASJ-SSL.

2.2 ADHESIVES

A. Materials shall be compatible with insulation materials, jackets, and substrates and for bonding

insulation to itself and to surfaces to be insulated unless otherwise indicated.

B. Polyisocyanurate Adhesive: Solvent-based resin adhesive, with a service temperature range of

minus 75 to plus 300 deg F.

C. Mineral-Fiber Adhesive: Comply with MIL-A-3316C, Class 2, Grade A.

D. ASJ Adhesive: Comply with MIL-A-3316C, Class 2, Grade A for bonding insulation jacket lap

seams and joints.

E. PVC Jacket Adhesive: Compatible with PVC jacket.

2.3 MASTICS

A. Materials shall be compatible with insulation materials, jackets, and substrates; comply with

MIL-PRF-19565C, Type II.

B. Breather Mastic: Water based; suitable for indoor and outdoor use on above-ambient services.

1. Water-Vapor Permeance: ASTM F 1249, 1.8 perms at 0.0625-inch dry film thickness.

2. Service Temperature Range: Minus 20 to plus 180 deg F.

3. Solids Content: 60 percent by volume and 66 percent by weight.

4. Color: White.

2.4 SEALANTS

A. ASJ Flashing Sealants, and Vinyl, PVDC, and PVC Jacket Flashing Sealants:



DES MOINES, IOWA

230719

1. Materials shall be compatible with insulation materials, jackets, and substrates.

2. Service Temperature Range: Minus 40 to plus 250 deg F.

3. Color: White.

2.5 FACTORY-APPLIED JACKETS

A. Insulation system schedules indicate factory-applied jackets on various applications. When

factory-applied jackets are indicated, comply with the following:

1. ASJ: White, kraft-paper, fiberglass-reinforced scrim with aluminum-foil backing;

complying with ASTM C 1136, Type I.

2. ASJ-SSL: ASJ with self-sealing, pressure-sensitive, acrylic-based adhesive covered by a

removable protective strip; complying with ASTM C 1136, Type I.

3. Vinyl Jacket: White vinyl with a permeance of 1.3 perms when tested according to

ASTM E 96/E 96M, Procedure A, and complying with NFPA 90A and NFPA 90B.

2.6 FIELD-APPLIED FABRIC-REINFORCING MESH

A. Woven Glass-Fiber Fabric: Approximately 2 oz./sq. yd. with a thread count of 10 strands by 10

strands/sq. in. for covering pipe and pipe fittings.

B. Woven Polyester Fabric: Approximately 1 oz./sq. yd. with a thread count of 10 strands by 10

strands/sq. in., in a Leno weave, for pipe.

2.7 FIELD-APPLIED JACKETS

A. Field-applied jackets shall comply with ASTM C 921, Type I, unless otherwise indicated.

B. PVC Jacket: High-impact-resistant, UV-resistant PVC complying with ASTM D 1784,

Class 16354-C; thickness as scheduled; roll stock ready for shop or field cutting and forming.

Thickness is indicated in field-applied jacket schedules.

1. Adhesive: As recommended by jacket material manufacturer.

2. Color: White.

3. Factory-fabricated fitting covers to match jacket if available; otherwise, field fabricate.

a. Shapes: 45- and 90-degree, short- and long-radius elbows, tees, valves, flanges,

unions, reducers, end caps, soil-pipe hubs, traps, mechanical joints, and P-trap and

supply covers for lavatories.

2.8 TAPES

A. ASJ Tape: White vapor-retarder tape matching factory-applied jacket with acrylic adhesive,

complying with ASTM C 1136.

1. Width: 3 inches.

2. Thickness: 11.5 mils.

3. Adhesion: 90 ounces force/inch in width.



DES MOINES, IOWA

230719

4. Elongation: 2 percent.

5. Tensile Strength: 40 lbf/inch in width.

6. ASJ Tape Disks and Squares: Precut disks or squares of ASJ tape.

B. PVC Tape: White vapor-retarder tape matching field-applied PVC jacket with acrylic adhesive;

suitable for indoor and outdoor applications.

1. Width: 2 inches.

2. Thickness: 6 mils.

3. Adhesion: 64 ounces force/inch in width.

4. Elongation: 500 percent.

5. Tensile Strength: 18 lbf/inch in width.

2.9 SECUREMENTS

A. Bands:

1. Stainless Steel: ASTM A 167 or ASTM A 240/A 240M, Type 304 or Type 316; 0.015

inch thick, 1/2 inch wide with wing seal.

B. Staples: Outward-clinching insulation staples, nominal 3/4-inch-wide, stainless steel or Monel.

C. Wire: 0.062-inch soft-annealed, stainless steel.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions for compliance with requirements for installation tolerances

and other conditions affecting performance of insulation application.

1. Verify that systems to be insulated have been tested and are free of defects.

2. Verify that surfaces to be insulated are clean and dry.

3. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Surface Preparation: Clean and dry surfaces to receive insulation. Remove materials that will

adversely affect insulation application.


A. Install insulation materials, accessories, and finishes with smooth, straight, and even surfaces;

free of voids throughout the length of piping including fittings, valves, and specialties.

B. Install insulation materials, forms, vapor barriers or retarders, jackets, and thicknesses required

for each item of pipe system as specified in insulation system schedules.



DES MOINES, IOWA

230719

C. Install accessories compatible with insulation materials and suitable for the service. Install

accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or

dry state.

D. Install insulation with longitudinal seams at top and bottom of horizontal runs.

E. Install multiple layers of insulation with longitudinal and end seams staggered.

F. Do not weld brackets, clips, or other attachment devices to piping, fittings, and specialties.

G. Keep insulation materials dry during application and finishing.

H. Install insulation with tight longitudinal seams and end joints. Bond seams and joints with

adhesive recommended by insulation material manufacturer.

I. Install insulation with least number of joints practical.

J. Where vapor barrier is indicated, seal joints, seams, and penetrations in insulation at hangers,

supports, anchors, and other projections with vapor-barrier mastic.

1. Install insulation continuously through hangers and around anchor attachments.

2. For insulation application where vapor barriers are indicated, extend insulation on anchor

legs from point of attachment to supported item to point of attachment to structure. Taper

and seal ends at attachment to structure with vapor-barrier mastic.

3. Install insert materials and install insulation to tightly join the insert. Seal insulation to

insulation inserts with adhesive or sealing compound recommended by insulation

material manufacturer.

4. Cover inserts with jacket material matching adjacent pipe insulation. Install shields over

jacket, arranged to protect jacket from tear or puncture by hanger, support, and shield.

K. Apply adhesives, mastics, and sealants at manufacturer's recommended coverage rate and wet

and dry film thicknesses.

L. Install insulation with factory-applied jackets as follows:

1. Draw jacket tight and smooth.

2. Cover circumferential joints with 3-inch-wide strips, of same material as insulation

jacket. Secure strips with adhesive and outward clinching staples along both edges of

strip, spaced 4 inches o.c.

3. Overlap jacket longitudinal seams at least 1-1/2 inches. Install insulation with

longitudinal seams at bottom of pipe. Clean and dry surface to receive self-sealing lap.

Staple laps with outward clinching staples along edge at 2 inches o.c.

4. Cover joints and seams with tape, according to insulation material manufacturer's written

instructions, to maintain vapor seal.

5. Where vapor barriers are indicated, apply vapor-barrier mastic on seams and joints and at

ends adjacent to pipe flanges and fittings.

M. Cut insulation in a manner to avoid compressing insulation more than 75 percent of its nominal

thickness.



DES MOINES, IOWA

230719

N. Finish installation with systems at operating conditions. Repair joint separations and cracking

due to thermal movement.

O. Repair damaged insulation facings by applying same facing material over damaged areas.

Extend patches at least 4 inches beyond damaged areas. Adhere, staple, and seal patches similar

to butt joints.

P. For above-ambient services, do not install insulation to the following:

1. Testing agency labels and stamps.

2. Nameplates and data plates.

3.4 GENERAL PIPE INSULATION INSTALLATION

A. Requirements in this article generally apply to all insulation materials except where more

specific requirements are specified in various pipe insulation material installation articles.

B. Insulation Installation on Fittings, Valves, Strainers, Flanges, and Unions:

1. Install insulation over fittings, valves, strainers, flanges, unions, and other specialties with

continuous thermal and vapor-retarder integrity unless otherwise indicated.

2. Insulate pipe elbows using preformed fitting insulation or mitered fittings made from

same material and density as adjacent pipe insulation. Each piece shall be butted tightly

against adjoining piece and bonded with adhesive. Fill joints, seams, voids, and irregular

surfaces with insulating cement finished to a smooth, hard, and uniform contour that is

uniform with adjoining pipe insulation.

3. Insulate tee fittings with preformed fitting insulation or sectional pipe insulation of same

material and thickness as used for adjacent pipe. Cut sectional pipe insulation to fit. Butt

each section closely to the next and hold in place with tie wire. Bond pieces with

adhesive.

4. Insulate valves using preformed fitting insulation or sectional pipe insulation of same

material, density, and thickness as used for adjacent pipe. Overlap adjoining pipe

insulation by not less than two times the thickness of pipe insulation, or one pipe

diameter, whichever is thicker. For valves, insulate up to and including the bonnets, valve

stuffing-box studs, bolts, and nuts. Fill joints, seams, and irregular surfaces with

insulating cement.

5. Insulate strainers using preformed fitting insulation or sectional pipe insulation of same

material, density, and thickness as used for adjacent pipe. Overlap adjoining pipe

insulation by not less than two times the thickness of pipe insulation, or one pipe

diameter, whichever is thicker. Fill joints, seams, and irregular surfaces with insulating

cement. Insulate strainers so strainer basket flange or plug can be easily removed and

replaced without damaging the insulation and jacket. Provide a removable reusable

insulation cover.

6. Insulate flanges and unions using a section of oversized preformed pipe insulation.

Overlap adjoining pipe insulation by not less than two times the thickness of pipe

insulation, or one pipe diameter, whichever is thicker.

7. Cover segmented insulated surfaces with a layer of finishing cement and coat with a

mastic. Install mastic for above-ambient services. Reinforce the mastic with fabric-

reinforcing mesh. Trowel the mastic to a smooth and well-shaped contour.



DES MOINES, IOWA

230719

8. For services not specified to receive a field-applied jacket, install fitted PVC cover over

elbows, tees, strainers, valves, flanges, and unions. Terminate ends with PVC end caps.

Tape PVC covers to adjoining insulation facing using PVC tape.

9. Stencil or label the outside insulation jacket of each union with the word "union." Match

size and color of pipe labels.

C. Insulate instrument connections for thermometers, pressure gages, pressure temperature taps,

test connections, sensors, switches, and transmitters on insulated pipes. Shape insulation at these

connections by tapering it to and around the connection with insulating cement and finish with

finishing cement, mastic, and flashing sealant.

3.5 INSTALLATION OF MINERAL-FIBER INSULATION

A. Insulation Installation on Straight Pipes and Tubes:

1. Secure each layer of preformed pipe insulation to pipe with wire or bands and tighten

bands without deforming insulation materials.

2. Where vapor barriers are indicated, seal longitudinal seams, end joints, and protrusions

with vapor-barrier mastic and joint sealant.

3. For insulation with factory-applied jackets on above-ambient surfaces, secure laps with

outward-clinched staples at 6 inches o.c.

B. Insulation Installation on Pipe Flanges:

1. Install preformed pipe insulation to outer diameter of pipe flange.

2. Make width of insulation section same as overall width of flange and bolts, plus twice the

thickness of pipe insulation.

3. Fill voids between inner circumference of flange insulation and outer circumference of

adjacent straight pipe segments with mineral-fiber blanket insulation.

4. Install jacket material with manufacturer's recommended adhesive, overlap seams at least

1 inch, and seal joints with flashing sealant.

C. Insulation Installation on Pipe Fittings and Elbows:

1. Install preformed sections of same material as straight segments of pipe insulation when

available.

2. When preformed insulation elbows and fittings are not available, install mitered sections

of pipe insulation, to a thickness equal to adjoining pipe insulation. Secure insulation

materials with wire or bands.

D. Insulation Installation on Valves and Pipe Specialties:

1. Install preformed sections of same material as straight segments of pipe insulation when

available.

2. When preformed sections are not available, install mitered sections of pipe insulation to

valve body.

3. Arrange insulation to permit access to packing and to allow valve operation without

disturbing insulation.

4. Install insulation to flanges as specified for flange insulation application.



DES MOINES, IOWA

230719

3.6 INSTALLATION OF POLYISOCYANURATE INSULATION

A. Insulation Installation on Straight Pipes and Tubes:

1. Secure each layer of insulation to pipe with tape or bands and tighten without deforming

insulation materials. Orient longitudinal joints between half sections in 3- and 9-o'clock

positions on the pipe.

2. For insulation with factory-applied jackets with vapor barriers, do not staple longitudinal

tabs. Instead, secure tabs with additional adhesive or tape as recommended by insulation

material manufacturer and seal with vapor-barrier mastic.

3. All insulation shall be tightly butted and free of voids and gaps at all joints. Vapor barrier

must be continuous. Before installing jacket material, install vapor-barrier system.

B. Insulation Installation on Pipe Flanges:

1. Install preformed pipe insulation to outer diameter of pipe flange.

2. Make width of insulation section same as overall width of flange and bolts, same

thickness of adjacent pipe insulation, not to exceed 1-1/2-inch thickness.

3. Fill voids between inner circumference of flange insulation and outer circumference of

adjacent straight pipe segments with cut sections of polyisocyanurate block insulation of

same thickness as pipe insulation.

C. Insulation Installation on Fittings and Elbows:

1. Install preformed sections of same material as straight segments of pipe insulation.

Secure according to manufacturer's written instructions.

D. Insulation Installation on Valves and Pipe Specialties:

1. Install preformed sections of polyisocyanurate insulation to valve body.

2. Arrange insulation to permit access to packing and to allow valve operation without

disturbing insulation.

3. Install insulation to flanges as specified for flange insulation application.

3.7 FIELD-APPLIED JACKET INSTALLATION

A. Where PVC jackets are indicated, install with 1-inch overlap at longitudinal seams and end

joints; for horizontal applications. Seal with manufacturer's recommended adhesive.

1. Apply two continuous beads of adhesive to seams and joints, one bead under lap and the

finish bead along seam and joint edge.

3.8 PIPING INSULATION SCHEDULE, GENERAL

A. Acceptable preformed pipe and tubular insulation materials and thicknesses are identified for

each piping system and pipe size range. If more than one material is listed for a piping system,

selection from materials listed is Contractor's option.



DES MOINES, IOWA

230719

3.9 INDOOR PIPING INSULATION SCHEDULE

A. Heat Pump Loop-Water Supply and Return:

1. Insulation shall be one of the following (including piping serving boiler B-1):

a. Mineral-Fiber, Preformed Pipe, Type I: 1 inch thick.

b. Polyisocyanurate: 1 inch thick.

B. Heating-Hot-Water Supply and Return, 200 Deg F and Below (including piping serving boilers

B-2 and B-3):

1. Insulation shall be one of the following:

a. Mineral-Fiber, Preformed Pipe, Type I: 2 inches thick.

b. Polyisocyanurate: 2 inches thick.

3.10 INDOOR, FIELD-APPLIED JACKET SCHEDULE

A. Install jacket over insulation material. For insulation with factory-applied jacket, install the

field-applied jacket over the factory-applied jacket.

B. Branch piping to boilers from vertical drops to boiler connections:

1. PVC: 20 mils thick.


DIRECT DIGITAL CONTROL (DDC) SYSTEM FOR HVAC 230923 - 1


DES MOINES, IOWA

230923

SECTION 230923 - DIRECT DIGITAL CONTROL (DDC) SYSTEM FOR HVAC

PART 1 - GENERAL




1.2 SUMMARY


1. Extension of DDC system for monitoring and controlling of HVAC systems.

2. Delivery of selected control devices to equipment and systems manufacturers for factory

installation and to HVAC systems installers for field installation.

1.3 DEFINITIONS

A. Algorithm: A logical procedure for solving a recurrent mathematical problem. A prescribed set

of well-defined rules or processes for solving a problem in a finite number of steps.

B. Analog: A continuously varying signal value, such as current, flow, pressure, or temperature.

C. Binary: Two-state signal where a high signal level represents ON" or "OPEN" condition and a

low signal level represents "OFF" or "CLOSED" condition. "Digital" is sometimes used

interchangeably with "Binary" to indicate a two-state signal.

D. Controller: Generic term for any standalone, microprocessor-based, digital controller residing

on a network, used for local or global control.

E. Control System Integrator: An entity that assists in expansion of existing enterprise system and

support of additional operator interfaces to I/O being added to existing enterprise system.

F. COV: Changes of value.

G. DDC System Provider: Authorized representative of, and trained by, DDC system manufacturer

and responsible for execution of DDC system Work indicated.

H. Distributed Control: Processing of system data is decentralized and control decisions are made

at subsystem level. System operational programs and information are provided to remote

subsystems and status is reported back. On loss of communication, subsystems shall be capable

of operating in a standalone mode using the last best available data.

I. DOCSIS: Data-Over Cable Service Interface Specifications.

J. HLC: Heavy load conditions.



DES MOINES, IOWA

230923

K. I/O: System through which information is received and transmitted. I/O refers to analog input

(AI), binary input (BI), analog output (AO) and binary output (BO). Analog signals are

continuous and represent control influences such as flow, level, moisture, pressure, and

temperature. Binary signals convert electronic signals to digital pulses (values) and generally

represent two-position operating and alarm status. "Digital," (DI and (DO), is sometimes used

interchangeably with "Binary," (BI) and (BO), respectively.

L. Low Voltage: As defined in NFPA 70 for circuits and equipment operating at less than 50 V or

for remote-control, signaling power-limited circuits.

M. MTBF: Mean time between failures.

N. Peer to Peer: Networking architecture that treats all network stations as equal partners.

O. POT: Portable operator's terminal.

P. PUE: Performance usage effectiveness.

Q. RF: Radio frequency.

R. TCP/IP: Transport control protocol/Internet protocol incorporated into Microsoft Windows.

S. User Datagram Protocol (UDP): This protocol assumes that the IP is used as the underlying

protocol.

T. WLED: White light emitting diode.


A. Product Data: For each type of product include the following:

1. Construction details, material descriptions, dimensions of individual components and

profiles, and finishes.

2. Operating characteristics, electrical characteristics, and furnished accessories indicating

process operating range, accuracy over range, control signal over range, default control

signal with loss of power, calibration data specific to each unique application, electrical

power requirements, and limitations of ambient operating environment, including

temperature and humidity.

3. Product description with complete technical data, performance curves, and product

specification sheets.

4. Installation, operation and maintenance instructions including factors effecting

performance.

5. Bill of materials of indicating quantity, manufacturer, and extended model number for

each unique product.

6. When manufacturer's product datasheets apply to a product series rather than a specific

product model, clearly indicate and highlight only applicable information.

7. Each submitted piece of product literature shall clearly cross reference specification and

drawings that submittal is to cover.

B. Software Submittal:



DES MOINES, IOWA

230923

1. Listing and description of software to be updated on each operator workstation, server,

gateway, and DDC controller.

2. Include a flow diagram and an outline of each subroutine that indicates each program

variable name and units of measure.

3. Listing and description of each engineering equation used with reference source.

4. Listing and description of each constant used in engineering equations and a reference

source to prove origin of each constant.

5. Description of operator interface to alphanumeric and graphic programming.

6. Controlled Systems: Instrumentation list with element name, type of device,

manufacturer, model number, and product data. Include written description of sequence

of operation including schematic diagram.

C. Shop Drawings:

1. General Requirements:

a. Include cover drawing with Project name, location, Owner, Architect, Contractor

and issue date with each Shop Drawings submission.

b. Include a drawing index sheet listing each drawing number and title that matches

information in each title block.

2. Include details of product assemblies. Indicate dimensions, weights, loads, required

clearances, method of field assembly, components, and location and size of each field

connection.

3. Schematic drawings for each controlled HVAC system indicating the following:

a. I/O points labeled with point names shown. Indicate instrument range, normal

operating set points, and alarm set points.

b. I/O listed in table format showing point name, type of device, manufacturer, model

number, and cross-reference to product data sheet number.

c. A graphic showing location of control I/O in proper relationship to HVAC system.

d. Wiring diagram with each I/O point having a unique identification and indicating

labels for all wiring terminals.

e. Unique identification of each I/O that shall be consistently used between different

drawings showing same point.

f. Elementary wiring diagrams of controls for HVAC equipment motor circuits

including interlocks, switches, relays and interface to DDC controllers.

g. Narrative sequence of operation.

h. Graphic sequence of operation, showing all inputs and output logical blocks.

4. DDC system network riser diagram indicating the following:

a. Each device connected to network with unique identification for each.

b. Interconnection of each different network in DDC system.

c. For each network, indicate communication protocol, speed and physical means of

interconnecting network devices, such as copper cable type. Indicate raceway type

and size for each.

d. Each network port for connection of an operator workstation or other type of

operator interface with unique identification for each.

5. Monitoring and control signal diagrams indicating the following:



DES MOINES, IOWA

230923

a. Control signal cable and wiring between controllers and I/O.

b. Point-to-point schematic wiring diagrams for each product.

6. Color graphics indicating the following:

a. Itemized list of color graphic displays to be provided.

b. For each display screen to be provided, a true color copy showing layout of

pictures, graphics and data displayed.

c. Intended operator access between related hierarchical display screens.

D. System Description:

1. Description of DDC system architecture, network configuration, controller types and

applications, gateways, and other network devices, and power supplies related to the

scope of this project.

2. Complete listing and description of each report, log and trend for format and timing and

events which initiate generation.

3. System and product operation under each potential failure condition including, but not

limited to, the following:

a. Loss of power.

b. Loss of network communication signal.

c. Loss of controller signals to inputs and outpoints.

d. Controller failure.

e. Instrument failure.

4. Complete bibliography of documentation and media to be delivered to Owner.

5. Description of testing plans and procedures.

6. Description of Owner training.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For DDC system to include in emergency, operation and

maintenance manuals.

1. In addition to items specified in Section 017823 "Operation and Maintenance Data,"

include the following:

a. Project Record Drawings of as-built versions of submittal Shop Drawings provided

in electronic PDF format.

b. Testing and commissioning reports and checklists of completed final versions of

reports, checklists, and trend logs.

c. As-built versions of submittal Product Data.

d. Names, addresses, e-mail addresses and 24-hour telephone numbers of Installer

and service representatives for DDC system and products.

e. Operator's manual with procedures for operating control systems including logging

on and off, handling alarms, producing point reports, trending data, overriding

computer control and changing set points and variables.



DES MOINES, IOWA

230923

f. Programming manuals with description of programming language and syntax, of

statements for algorithms and calculations used, of point database creation and

modification, of program creation and modification, and of editor use.

g. Engineering, installation, and maintenance manuals that explain how to:

1) Design and install new points, panels, and other hardware.

2) Perform preventive maintenance and calibration.

3) Debug hardware problems.

4) Repair or replace hardware.

h. Documentation of all programs created using custom programming language

including set points, tuning parameters, and object database.

i. Backup copy of graphic files, programs, and database on electronic media such as

DVDs.

j. List of recommended spare parts with part numbers and suppliers.

k. Complete original-issue documentation, installation, and maintenance information

for furnished third-party hardware including computer equipment and sensors.

l. Complete original-issue copies of furnished software, including operating systems,

custom programming language, operator workstation software, and graphics

software.

m. Licenses, guarantees, and warranty documents.

n. Recommended preventive maintenance procedures for system components,

including schedule of tasks such as inspection, cleaning, and calibration; time

between tasks; and task descriptions.

o. Owner training materials.

1.6 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials and parts that match products installed and that are packaged with

protective covering for storage and identified with labels describing contents.

B. Include product manufacturers' recommended parts lists for proper product operation over four-

year period following warranty period. Parts list shall be indicated for each year.


A. DDC System Manufacturer: Johnson Controls.

B. DDC System Provider: Johnson Controls Des Moines, (515) 203-3658

1.8 WARRANTY

A. Manufacturer's Warranty: Manufacturer and Installer agree to repair or replace products that fail

in materials or workmanship within specified warranty period.

1. Failures shall be adjusted, repaired, or replaced at no additional cost or reduction in

service to Owner.



DES MOINES, IOWA

230923

2. Include updates or upgrades to software and firmware if necessary to resolve

deficiencies.

a. Install updates only after receiving Owner's written authorization.

3. Warranty service shall occur during normal business hours and commence within 8 hours

of Owner's warranty service request.

4. Warranty Period: One year(s) from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 DDC SYSTEM DESCRIPTION

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by

a qualified testing agency, and marked for intended location and application.

2.2 NETWORK COMMUNICATION PROTOCOL

A. Match existing network communication protocol.

2.3 SYSTEM SOFTWARE

1. Update all software to latest version.

2.4 RELAYS

A. General-Purpose Relays:

1. Relays shall be heavy duty and rated for at least 10 A at 250-V ac and 60 Hz.

2. Relays shall be either double pole double throw (DPDT) or three-pole double throw,

depending on the control application.

3. Use a plug-in-style relay with an eight-pin octal plug for DPDT relays and an 11-pin

octal plug for three-pole double-throw relays.

4. Construct the contacts of either silver cadmium oxide or gold.

5. Enclose the relay in a clear transparent polycarbonate dust-tight cover.

6. Relays shall have LED indication and a manual reset and push-to-test button.

7. Performance:

a. Mechanical Life: At least 10 million cycles.

b. Electrical Life: At least 100,000 cycles at rated load.

c. Pickup Time: 15 ms or less.

d. Dropout Time: 10 ms or less.

e. Pull-in Voltage: 85 percent of rated voltage.

f. Dropout Voltage: 50 percent of nominal rated voltage.

g. Power Consumption: 2 VA.

h. Ambient Operating Temperatures: Minus 40 to 115 deg F.



DES MOINES, IOWA

230923

8. Equip relays with coil transient suppression to limit transients to non-damaging levels.

9. Plug each relay into an industry-standard, 35-mm DIN rail socket. Plug all relays located

in control panels into sockets that are mounted on a DIN rail.

10. Relay socket shall have screw terminals. Mold into the socket the coincident screw

terminal numbers and associated octal pin numbers.

B. Current Sensing Relay:

1. Monitors ac current.

2. Independent adjustable controls for pickup and dropout current.

3. Energized when supply voltage is present and current is above pickup setting.

4. De-energizes when monitored current is below dropout current.

5. Dropout current is adjustable from 50 to 95 percent of pickup current.

6. Include a current transformer, if required for application.

7. House current sensing relay and current transformer in its own enclosure. Use

NEMA 250, Type 12 enclosure for indoors and NEMA 250, Type 4 for outdoors.

C. Combination On-Off Status Sensor and On-Off Relay:

1. Description:

a. On-off control and status indication in a single device.

b. LED status indication of activated relay and current trigger.

c. Closed-Open-Auto override switch located on the load side of the relay.

2. Performance:

a. Ambient Temperature: Minus 30 to 140 deg F.

b. Voltage Rating: Single-phase loads rated for 300-V ac. Three-phase loads rated for

600-V ac.

3. Status Indication:

a. Current Sensor: Integral sensing for single-phase loads up to 20 A and external

solid or split sensing ring for three-phase loads up to 150 A.

b. Current Sensor Range: As required by application.

c. Current Set Point: Fixed or adjustable as required by application.

d. Current Sensor Output:

1) Solid-state, single-pole double-throw contact rated for 30-V ac and dc and

for 0.4 A.

2) Solid-state, single-pole double-throw contact rated for 120-V ac and 1.0 A.

3) Analog, zero- to 5- or 10-V dc.

4) Analog, 4 to 20 mA, loop powered.

4. Relay: Single-pole double-throw, continuous-duty coil; rated for 10-million mechanical

cycles.

5. Enclosure: NEMA 250, Type 1 enclosure.



DES MOINES, IOWA

230923

2.5 CONTROL WIRE AND CABLE

A. Wire: Single conductor control wiring above 24 V.

1. Wire size shall be at least No. 14 AWG.

2. Conductor shall be 7/24 soft annealed copper strand with 2- to 2.5-inch lay.

3. Conductor insulation shall be 600 V, Type THWN or Type THHN, and 90 deg C

according to UL 83.

4. Conductor colors shall be black (hot), white (neutral), and green (ground).

5. Furnish wire on spools.

B. Single Twisted Shielded Instrumentation Cable above 24 V:

1. Wire size shall be a minimum No. 18 AWG.

2. Conductors shall be a twisted, 7/24 soft annealed copper strand with a 2- to 2.5-inch lay.

3. Conductor insulation shall have a Type THHN/THWN or Type TFN rating.

4. Shielding shall be 100 percent type, 0.35/0.5-mil aluminum/Mylar tape, helically applied

with 25 percent overlap, and aluminum side in with tinned copper drain wire.

5. Outer jacket insulation shall have a 600-V, 90-deg C rating and shall be Type TC cable.

6. For twisted pair, conductor colors shall be black and white. For twisted triad, conductor

colors shall be black, red and white.


C. Single Twisted Shielded Instrumentation Cable 24 V and Less:

1. Wire size shall be a minimum No. 20 AWG.

2. Conductors shall be a twisted, 7/24 soft annealed copper stranding with a 2- to 2.5-inch

lay.

3. Conductor insulation shall have a nominal 15-mil thickness, constructed from flame-

retardant PVC.

4. Shielding shall be 100 percent type, 1.35-mil aluminum/polymer tape, helically applied

with 25 percent overlap, and aluminum side in with tinned copper drain wire.

5. Outer jacket insulation shall have a 300-V, 105-deg C rating and shall be Type PLTC

cable.

6. For twisted pair, conductor colors shall be black and white. For twisted triad, conductor

colors shall be black, red and white.


2.6 RACEWAYS FOR CONTROL WIRING AND CABLING

A. Metal Conduits, Tubing, and Fittings:

1. Listing and Labeling: Metal conduits, tubing, and fittings shall be listed and labeled as

defined in NFPA 70, by a qualified testing agency, and marked for intended location and

application.

2. EMT: Comply with NEMA ANSI C80.3 and UL 797.

3. FMC: Comply with UL 1; zinc-coated steel or aluminum.

4. Fittings for Metal Conduit: Comply with NEMA ANSI FB 1 and UL 514B.

a. Fittings for EMT:



DES MOINES, IOWA

230923

1) Material: Steel.

2) Type: Setscrew or compression.

B. Metal Wireways and Auxiliary Gutters:

1. Description: Sheet metal, complying with UL 870 and NEMA 250, Type 1 unless

otherwise indicated, and sized according to NFPA 70.

2. Fittings and Accessories: Include covers, couplings, offsets, elbows, expansion joints,

adapters, hold-down straps, end caps, and other fittings to match and mate with wireways

as required for complete system.

3. Wireway Covers: Screw-cover type unless otherwise indicated.

4. Finish: Manufacturer's standard enamel finish.

C. Surface Metal Raceways: Galvanized steel with snap-on covers complying with UL 5..

2.7 CONTROL POWER WIRING AND RACEWAYS

A. Comply with requirements in Section 260519 "Low-Voltage Electrical Power Conductors and

Cables" electrical power conductors and cables.

B. Comply with requirements in Section 260533 "Raceways and Boxes for Electrical Systems" for

electrical power raceways and boxes.

2.8 IDENTIFICATION

A. Control Equipment, Instruments, and Control Devices:

1. Engraved tag bearing unique identification.

a. Include instruments with unique identification identified by equipment being

controlled or monitored, followed by point identification.

2. Letter size shall be as follows:

a. DDC Controllers: Minimum of 0.5 inch high.

b. Gateways: Minimum of 0.5 inch high.

c. Enclosures: Minimum of 0.5 inch high.

d. Electrical Power Devices: Minimum of 0.25 inch high.

e. Instruments: Minimum of 0.25 inch high.

3. Tag shall consist of white lettering on black background.

4. Tag shall be engraved phenolic consisting of three layers of rigid laminate. Top and

bottom layers are color-coded black with contrasting white center exposed by engraving

through outer layer.

5. Tag shall be fastened with drive pins.

6. Instruments, control devices and actuators with Project-specific identification tags having

unique identification numbers following requirements indicated and provided by original

manufacturer do not require an additional tag.

B. Raceway and Boxes:



DES MOINES, IOWA

230923

1. Comply with requirements for identification specified in Section 260553 "Identification

for Electrical Systems."

2. Paint cover plates on junction boxes and conduit same color as the tape banding for

conduits. After painting, label cover plate "HVAC Controls," using an engraved phenolic

tag.

C. Equipment Warning Labels:

1. Acrylic label with pressure-sensitive adhesive back and peel-off protective jacket.

2. Lettering size shall be at least 14-point type with white lettering on red background.

3. Warning label shall read "CAUTION-Equipment operated under remote automatic

control and may start or stop at any time without warning. Switch electric power

disconnecting means to OFF position before servicing."

4. Lettering shall be enclosed in a white line border. Edge of label shall extend at least 0.25

inchbeyond white border.

PART 3 - EXECUTION

3.1 EXAMINATION


and other conditions affecting performance of the Work.

1. Verify compatibility with and suitability of substrates.

B. Examine roughing-in for products to verify actual locations of connections before installation.

1. Examine roughing-in for instruments installed in piping to verify actual locations of

connections before installation.

C. Prepare written report, endorsed by Installer, listing conditions detrimental to performance of

the Work.

D. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 DDC SYSTEM INTERFACE WITH OTHER SYSTEMS AND EQUIPMENT

A. Communication Interface to Equipment with Integral Controls:

1. DDC system shall have communication interface with equipment having integral controls

and having a communication interface for remote monitoring or control.

2. Equipment to Be Connected: Boilers specified in Section 235216 "Condensing Boilers"

and Section 235233 "Water-Tube Boilers."



DES MOINES, IOWA

230923

3.3 CONTROL DEVICES FOR INSTALLATION BY INSTALLERS

A. Deliver selected control devices, specified in indicated HVAC instrumentation and control

device Sections, to identified equipment and systems manufacturers for factory installation and

to identified installers for field installation.

B. Deliver the following to HVAC piping installers for installation in piping. Include installation

instructions to Installer and supervise installation for compliance with requirements.

1. Pipe- and tank-mounted thermowells. Liquid thermowells are specified in

Section 230923.27 "Temperature Instruments."


A. Install products to satisfy more stringent of all requirements indicated.

B. Install products level, plumb, parallel, and perpendicular with building construction.

C. Support products, wiring, and raceways. Brace products to prevent lateral movement and sway

or a break in attachment when subjected to force.

D. If codes and referenced standards are more stringent than requirements indicated, comply with

requirements in codes and referenced standards.

E. Fastening Hardware:

1. Stillson wrenches, pliers, and other tools that damage surfaces of rods, nuts, and other

parts are prohibited for work of assembling and tightening fasteners.

2. Tighten bolts and nuts firmly and uniformly. Do not overstress threads by excessive force

or by oversized wrenches.

3. Lubricate threads of bolts, nuts and screws with graphite and oil before assembly.

F. If product locations are not indicated, install products in locations that are accessible and that

will permit service and maintenance from floor without removal of permanently installed

furniture and equipment.

3.5 ENCLOSURES INSTALLATION

A. Install the following items in enclosures, to comply with indicated requirements:

1. Relays.

2. Instruments.

3.6 IDENTIFICATION

A. Identify system components, wiring, cabling, and terminals. Comply with requirements in

Section 260553 "Identification for Electrical Systems" for identification products and

installation.



DES MOINES, IOWA

230923

B. Install engraved phenolic nameplate with unique instrument identification on face of each

instrument connected to a DDC controller.

C. Warning Labels:

1. Shall be permanently attached to equipment that can be automatically started by DDC

control system.

2. Shall be located in highly visible location near power service entry points.

3.7 CONTROL WIRE, CABLE AND RACEWAYS INSTALLATION

A. Comply with NECA 1.

B. Comply with TIA 568-C.1.

C. Field Wiring within Enclosures: Bundle, lace, and train conductors to terminal points with no

excess and without exceeding manufacturer's limitations on bending radii. Install lacing bars

and distribution spools.

D. Conduit Installation:

1. Install conduit expansion joints where conduit runs exceed 200 feet, and conduit crosses

building expansion joints.

2. Coordinate conduit routing with other trades to avoid conflicts with pipes and equipment

and service clearance.

3. Maintain at least 3-inch separation where conduits run axially above or below pipes.

4. Limit above-grade conduit runs to 100 feet without pull or junction box.

5. Flexible conduit is permitted only where flexibility and vibration control is required.

6. Limit flexible conduit to 3 feet long.

7. Conduit shall be continuous from outlet to outlet, from outlet to enclosures, pull and

junction boxes, and shall be secured to boxes in such manner that each system shall be

electrically continuous throughout.

8. Secure threaded conduit entering an instrument enclosure, cabinet, box, and trough, with

a locknut on outside and inside, such that conduit system is electrically continuous

throughout. Provide a metal bushing on inside with insulated throats. Locknuts shall be

the type designed to bite into the metal or, on inside of enclosure, shall have a grounding

wedge lug under locknut.

9. Conduit box-type connectors for conduit entering enclosures shall have an insulated

throat.

10. Offset conduits where entering surface-mounted equipment.

E. Wire and Cable Installation:

1. Cables serving a common system may be grouped in a common raceway. Install control

wiring and cable in separate raceway from power wiring. Do not group conductors from

different systems or different voltages.

2. Install cables with protective sheathing that is waterproof and capable of withstanding

continuous temperatures of 90 deg C with no measurable effect on physical and electrical

properties of cable.



DES MOINES, IOWA

230923

a. Provide shielding to prevent interference and distortion from adjacent cables and

equipment.

3. Install lacing bars to restrain cables, to prevent straining connections, and to prevent

bending cables to smaller radii than minimums recommended by manufacturer.

4. Bundle, lace, and train conductors to terminal points without exceeding manufacturer's

limitations on bending radii, but not less than radii specified in BICSI ITSIMM, "Cabling

Termination Practices" Chapter. Install lacing bars and distribution spools.

5. Identify each wire on each end and at each terminal with a number-coded identification

tag. Each wire shall have a unique tag.

6. Provide strain relief.

7. Terminate wiring in a junction box.

a. Clamp cable over jacket in junction box.

b. Individual conductors in the stripped section of the cable shall be slack between

the clamping point and terminal block.

8. Terminate field wiring and cable not directly connected to instruments and control

devices having integral wiring terminals using terminal blocks.

9. Install signal transmission components according to IEEE C2, REA Form 511a,

NFPA 70, and as indicated.

10. Keep runs short. Allow extra length for connecting to terminal boards. Do not bend

flexible coaxial cables in a radius less than 10 times the cable OD. Use sleeves or

grommets to protect cables from vibration at points where they pass around sharp corners

and through penetrations.

11. Ground wire shall be copper and grounding methods shall comply with IEEE C2.

Demonstrate ground resistance.

12. Wire and cable shall be continuous from terminal to terminal without splices.

13. Use insulated spade lugs for wire and cable connection to screw terminals.

14. Use shielded cable to transmitters.

15. Use shielded cable to temperature sensors.

16. Perform continuity and meager testing on wire and cable after installation.

17. Do not install bruised, kinked, scored, deformed, or abraded wire and cable. Remove and

discard wire and cable if damaged during installation, and replace it with new cable.

18. Pulling Cable: Comply with BICSI ITSIM, Ch. 4, "Pulling Cable." Monitor cable pull

tensions.

19. Protection from Electro-Magnetic Interference (EMI): Provide installation free of (EMI).

As a minimum, comply with the following requirements:

a. Comply with BICSI TDMM and TIA 569-C for separating unshielded cable from

potential EMI sources, including electrical power lines and equipment.

b. Separation between open cables or cables in nonmetallic raceways and unshielded

power conductors and electrical equipment shall be as follows:

1) Electrical Equipment Rating Less Than 2 kVA: A minimum of 5 inches.

2) Electrical Equipment Rating between 2 and 5 kVA: A minimum of 12

inches.

3) Electrical Equipment Rating More Than 5 kVA: A minimum of 24 inches.

c. Separation between cables in grounded metallic raceways and unshielded power

lines or electrical equipment shall be as follows:



DES MOINES, IOWA

230923

1) Electrical Equipment Rating Less Than 2 kVA: A minimum of 2-1/2 inches.

2) Electrical Equipment Rating between 2 and 5 kVA: A minimum of 6 inches.


d. Separation between cables in grounded metallic raceways and power lines and

electrical equipment located in grounded metallic conduits or enclosures shall be

as follows:

1) Electrical Equipment Rating Less Than 2 kVA: No requirement.

2) Electrical Equipment Rating between 2 and 5 kVA: A minimum of 3 inches.


e. Separation between Cables and Electrical Motors and Transformers, 5 kVA or 5

HP and Larger: A minimum of 48 inches.

f. Separation between Cables and Fluorescent Fixtures: A minimum of 5 inches.

3.8 FIELD QUALITY CONTROL

A. Perform the following tests and inspections:

1. Perform each visual and mechanical inspection and electrical test stated in NETA

Acceptance Testing Specification. Certify compliance with test parameters.

2. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and

equipment.

B. Testing:

1. Perform preinstallation, in-progress, and final tests, supplemented by additional tests, as

necessary.

2. Preinstallation Cable Verification: Verify integrity and serviceability for new cable

lengths before installation. This assurance may be provided by using vendor verification

documents, testing, or other methods. As a minimum, furnish evidence of verification for

cable attenuation and bandwidth parameters.

3. In-Progress Testing: Perform standard tests for correct pair identification and termination

during installation to ensure proper installation and cable placement. Perform tests in

addition to those specified if there is any reason to question condition of material

furnished and installed. Testing accomplished is to be documented by agency conducting

tests. Submit test results for Project record.

4. Final Testing: Perform final test of installed system to demonstrate acceptability as

installed. Testing shall be performed according to a test plan supplied by DDC system

manufacturer. Defective Work or material shall be corrected and retested. As a minimum,

final testing for cable system, including spare cable, shall verify conformance of

attenuation, length, and bandwidth parameters with performance indicated.

5. Test Results: Record test results and submit copy of test results for Project record.

3.9 DDC SYSTEM I/O CHECKOUT PROCEDURES

A. Check installed products before continuity tests, leak tests and calibration.



DES MOINES, IOWA

230923

B. Check instruments for proper location and accessibility.

C. Check instruments for proper installation on direction of flow, elevation, orientation, insertion

depth, or other applicable considerations that will impact performance.

D. Instrument Checkout:

1. Verify that instrument is correctly installed for location, orientation, direction and

operating clearances.

2. Verify that attachment is properly secured and sealed.

3. Verify that conduit connections are properly secured and sealed.

4. Verify that wiring is properly labeled with unique identification, correct type and size and

is securely attached to proper terminals.

5. Inspect instrument tag against approved submittal.

6. For temperature instruments:

a. Verify sensing element type and proper material.

b. Verify length and insertion.

3.10 DDC SYSTEM I/O ADJUSTMENT, CALIBRATION AND TESTING:

A. Calibrate each instrument installed that is not factory calibrated and provided with calibration

documentation.

B. Provide a written description of proposed field procedures and equipment for calibrating each

type of instrument. Submit procedures before calibration and adjustment.

C. For each analog instrument, make a three-point test of calibration for both linearity and

accuracy.

D. Equipment and procedures used for calibration shall comply with instrument manufacturer's

written instructions.

E. Provide diagnostic and test equipment for calibration and adjustment.

F. Field instruments and equipment used to test and calibrate installed instruments shall have

accuracy at least twice the instrument accuracy being calibrated. An installed instrument with an

accuracy of 1 percent shall be checked by an instrument with an accuracy of 0.5 percent.

G. Calibrate each instrument according to instrument instruction manual supplied by manufacturer.

H. If after calibration indicated performance cannot be achieved, replace out-of-tolerance

instruments.

I. Comply with field testing requirements and procedures indicated by ASHRAE's Guideline 11,

"Field Testing of HVAC Control Components," in the absence of specific requirements, and to

supplement requirements indicated.

J. Analog Signals:



DES MOINES, IOWA

230923

1. Check analog voltage signals using a precision voltage meter at zero, 50, and 100

percent.

2. Check analog current signals using a precision current meter at zero, 50, and 100 percent.

3. Check resistance signals for temperature sensors at zero, 50, and 100 percent of operating

span using a precision-resistant source.

K. Digital Signals:

1. Check digital signals using a jumper wire.

2. Check digital signals using an ohmmeter to test for contact making or breaking.

L. Sensors: Check sensors at zero, 50, and 100 percent of Project design values.

M. Switches: Calibrate switches to make or break contact at set points indicated.

N. Transmitters:

1. Check and calibrate transmitters at zero, 50, and 100 percent of Project design values.

2. Calibrate resistance temperature transmitters at zero, 50, and 100 percent of span using a

precision-resistant source.

3.11 DDC CONTROLLER I/O CONTROL LOOP TESTS

A. Testing:

1. Test every I/O point connected to DDC controller to verify that safety and operating

control set points are as indicated and as required to operate controlled system safely and

at optimum performance.

2. Test every I/O point throughout its full operating range.

3. Test every control loop to verify operation is stable and accurate.

4. Adjust control loop proportional, integral and derivative settings to achieve optimum

performance while complying with performance requirements indicated. Document

testing of each control loop's precision and stability via trend logs.

5. Test and adjust every control loop for proper operation according to sequence of

operation.

6. Test software and hardware interlocks for proper operation. Correct deficiencies.

7. Operate each analog point at the following:

a. Upper quarter of range.

b. Lower quarter of range.

c. At midpoint of range.

8. Exercise each binary point.

9. For every I/O point in DDC system, read and record each value at operator workstation,

at DDC controller and at field instrument simultaneously. Value displayed at operator

workstation, at DDC controller and at field instrument shall match.

10. Prepare and submit a report documenting results for each I/O point in DDC system and

include in each I/O point a description of corrective measures and adjustments made to

achieve desire results.



DES MOINES, IOWA

230923

3.12 FINAL REVIEW

A. Submit written request to Engineer when DDC system is ready for final review. Written request

shall state the following:

1. DDC system has been thoroughly inspected for compliance with contract documents and

found to be in full compliance.

2. DDC system has been calibrated, adjusted and tested and found to comply with

requirements of operational stability, accuracy, speed and other performance

requirements indicated.

3. DDC system monitoring and control of HVAC systems results in operation according to

sequences of operation indicated.

4. DDC system is complete and ready for final review.

B. Review by Engineer shall be made after receipt of written request. A field report shall be issued

to document observations and deficiencies.

C. Take prompt action to remedy deficiencies indicated in field report and submit a second written

request when all deficiencies have been corrected. Repeat process until no deficiencies are

reported.

D. Should more than two reviews be required, DDC system manufacturer and Installer shall

compensate entity performing review for total costs, labor and expenses, associated with third

and subsequent reviews. Estimated cost of each review shall be submitted and approved by

DDC system manufacturer and Installer before making the review.

E. Prepare and submit closeout submittals when no deficiencies are reported.

F. A part of DDC system final review shall include a demonstration to parties participating in final

review.

1. Provide staff familiar with DDC system installed to demonstrate operation of DDC

system during final review.

2. Provide testing equipment to demonstrate accuracy and other performance requirements

of DDC system that is requested by reviewers during final review.

3.13 ADJUSTING

A. Occupancy Adjustments: When requested within 12 months from date of Substantial

Completion, provide on-site assistance in adjusting system to suit actual occupied conditions.

Provide up to two visits to Project during other-than-normal occupancy hours for this purpose.

3.14 DEMONSTRATION

A. Engage a factory-authorized service representative with complete knowledge of Project-specific

system installed to train Owner's maintenance personnel to adjust, operate, and maintain DDC

system.

B. Extent of Training:



DES MOINES, IOWA

230923

1. Base extent of training on scope and complexity of DDC system indicated and training

requirements indicated. Provide extent of training required to satisfy requirements

indicated even if more than minimum training requirements are indicated.

2. Inform Owner of anticipated training requirements if more than minimum training

requirements are indicated.

3. Minimum Training Requirements:

a. Provide not less than one hour of training total.

C. Training Schedule:

1. Schedule training to provide Owner with at least 5 business days of notice in advance of

training.

2. Training shall occur within normal business hours at a mutually agreed on time.

D. Training Attendee List and Sign-in Sheet:

1. Provide an attendee sign-in sheet. At end of training, send Owner an e-mail with an

attachment of scanned copy (PDF) of circulated sign-in sheet for each session.

E. Training Attendee Headcount:

1. Plan in advance of training for approximately two attendees.

2. Headcount may vary depending on training content covered in session. Attendee access

may be restricted to some training content for purposes of maintaining system security.

F. Instructor Requirements:

1. One or multiple qualified instructors, as required, to provide training.

G. Organization of Training Sessions:

1. Organize training sessions into logical groupings of technical content and to reflect

different levels of operators having access to system

2. Plan and organize training sessions to group training content to protect DDC system

security. Some attendees may be restricted to some training sessions that cover restricted

content for purposes of maintaining DDC system security.

H. Training Outline:

1. Submit training outline for Owner review at least 5 business days before scheduling

training.

I. On-Site Training:

1. Owner will provide conditioned classroom or workspace with ample desks or tables,

chairs, power and data connectivity for instructor and each attendee.

2. Instructor shall provide training materials, projector and other audiovisual equipment

used in training.

3. Provide as much of training located on-site as deemed feasible and practical by Owner.



DES MOINES, IOWA

230923

4. On-site training shall include regular walk-through tours, as required, to observe each

unique product type installed with hands-on review of operation, calibration and service

requirements.

5. Operator workstation provided with DDC system shall be used in training. If operator

workstation is not indicated, provide a temporary workstation to convey training content.

J. Training Content for Daily Operators:

1. Basic operation of system.

2. Understanding DDC system architecture and configuration.

3. Understanding each unique product type installed including performance and service

requirements for each.

4. Understanding operation of each system and equipment controlled by DDC system

including sequences of operation, each unique control algorithm and each unique

optimization routine.

5. Understanding physical location and placement of DDC controllers and I/O hardware.

6. Accessing data from DDC controllers.

7. Running each specified report and log.

8. Stepping through graphics penetration tree, displaying all graphics, demonstrating

dynamic updating, and direct access to graphics.

9. Executing digital and analog commands in graphic mode.

10. Demonstrating DDC system performance through trend logs and command tracing.

11. Demonstrating the following for HVAC systems and equipment controlled by DDC

system:

a. For HVAC equipment with factory-installed software, show that integration into

DDC system is able to communicate with DDC controllers or gateways, as

applicable.

b. Using graphed trends, show that sequence of operation is executed in correct

manner, and HVAC systems operate properly through complete sequence of

operation including seasonal change, occupied and unoccupied modes, warm-up

and cool-down cycles and other modes of operation indicated.

c. Hardware interlocks and safeties function properly and DDC system performs

correct sequence of operation after electrical power interruption and resumption

after power is restored.

d. Reporting of alarm conditions for each alarm, and confirm that alarms are received

at assigned locations, including operator workstations.

e. Each control loop responds to set point adjustment and stabilizes within time

period indicated.


TEMPERATURE INSTRUMENTS 230923.27 - 1


DES MOINES, IOWA

23092327

SECTION 230923.27 - TEMPERATURE INSTRUMENTS

PART 1 - GENERAL




1.2 SUMMARY


1. Liquid temperature sensors.

B. Related Requirements:

1. Section 230923 "Direct-Digital Control System for HVAC" for control equipment and

software, relays, electrical power devices, uninterruptible power supply units, wire, and

cable.

PART 2 - PRODUCTS


A. Environmental Conditions:

1. Instruments shall operate without performance degradation under the ambient

environmental temperature, pressure, humidity, and vibration conditions specified and

encountered for installed location.

2.2 LIQUID TEMPERATURE SENSORS, COMMERCIAL GRADE

A. RTD:

1. Description:

a. Platinum with a value of 100 or 1000 ohms at zero deg C and a temperature

coefficient of 0.00385 ohm/ohm/deg C.

b. Encase RTD in a stainless-steel sheath with a 0.25-inch OD.

c. Sensor Length: 4, 6, or 8 inchesas required by application.

d. Process Connection: Threaded, NPS 1/2

e. Two-stranded copper lead wires.

f. Powder-coated steel enclosure, NEMA 250, Type 4.



DES MOINES, IOWA

23092327

g. Conduit Connection: 1/2-inch

h. Performance Characteristics:

1) Range: Minus 40 to 210 deg F.

2) Interchangeable Accuracy: Within 0.54 deg F at 32 deg F.

B. Thermowells:

1. Stem: Straight or stepped shank formed from solid bar stock.

2. Material: Brass or stainless steel.

3. Process Connection: Threaded, NPS 3/4.

4. Sensor Connection: Threaded, NPS 1/2.

5. Bore: Sized to accommodate sensor with tight tolerance between sensor and well.

6. Furnish thermowells installed in insulated pipes and equipment with an extended neck.

7. Length: 4, 6, or 8 inchesas required by application.

8. Thermowells furnished with heat-transfer compound to eliminate air gap between wall of

sensor and thermowell and to reduce time constant.

PART 3 - EXECUTION

3.1 EXAMINATION


and other conditions affecting performance of the Work.

B. Examine roughing-in for instruments installed in piping to verify actual locations of connections

before installation.

C. Prepare written report, endorsed by Installer, listing conditions detrimental to performance.

D. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION, GENERAL

A. Install products level, plumb, parallel, and perpendicular with building construction.

B. Properly support instruments, wiring, and conduit to comply with requirements indicated. Brace

all products to prevent lateral movement and sway or a break in attachment when subjected to

force.

C. Fastening Hardware:

1. Stillson wrenches, pliers, and other tools that cause injury to or mar surfaces of rods,

nuts, and other parts are prohibited for work of assembling and tightening nuts.

2. Tighten bolts and nuts firmly and uniformly. Do not overstress threads by excessive force

or by oversized wrenches.

3. Lubricate threads of bolts, nuts, and screws with graphite and oil before assembly.



DES MOINES, IOWA

23092327

D. Install products in locations that are accessible and that permit calibration and maintenance

from floor, equipment platforms, or catwalks. Where ladders are required for Owner's access,

confirm unrestricted ladder placement is possible under occupied condition.

3.3 ELECTRIC POWER

A. Furnish and install electrical power to products requiring electrical connections.

B. Furnish and install circuit breakers. Comply with requirements in Section 262816 "Enclosed

Switches and Circuit Breakers."

C. Furnish and install power wiring. Comply with requirements in Section 260519 "Low-Voltage

Electrical Power Conductors and Cables."

D. Furnish and install raceways. Comply with requirements in Section 260533 "Raceways and

Boxes for Electrical Systems."

3.4 TEMPERATURE INSTRUMENT INSTALLATIONS

A. Mounting Location:

1. Roughing In:

a. Outline instrument mounting locations before setting instruments and routing

cable, wiring, tubing, and conduit to final location.

b. Provide independent inspection to confirm that proposed mounting locations

comply with requirements indicated and approved submittals.

1) Indicate dimensioned locations with mounting height for all surface-

mounted products on Shop Drawings.

2) Do not begin installation without submittal approval of mounting location.

c. Complete installation rough-in only after confirmation by independent inspection

is complete and approval of location is documented for review by Owner and

Architect on request.

B. Liquid Temperature Sensor Installation:

1. Assembly shall include sensor, thermowell.

2. For pipe NPS 4 and larger, install sensor and thermowell length to extend into pipe

between 50 to 75 percent of pipe cross section.

3. For pipe smaller than NPS 4:

a. Install reducers to increase pipe size to NPS 4at point of thermowell installation.

b. For pipe sizes NPS 2-1/2 and NPS 3, thermowell and sensor may be installed at

pipe elbow or tee to achieve manufacturer-recommended immersion depth in lieu

of increasing pipe size.

c. Minimum insertion depth shall be 2-1/2 inches.

4. Install matching thermowell.



DES MOINES, IOWA

23092327

5. Fill thermowell with heat-transfer fluid before inserting sensor.

6. Tip of spring-loaded sensors shall contact inside of thermowell.

7. For insulated piping, install thermowells with extension neck to extend beyond face of

insulation.

8. Install thermowell in top dead center of horizontal pipe positioned in an accessible

location to allow for inspection and replacement. If top dead center location is not

possible due to field constraints, install thermowell at location along top half of pipe.

9. For applications with transmitters, mount transmitter remote from sensor in an accessible

and serviceable location from floor.

3.5 IDENTIFICATION

A. Identify system components, wiring, cabling, and terminals. Each piece of wire, cable, and

tubing shall have the same designation at each end for operators to determine continuity at

points of connection. Comply with requirements for identification specified in Section 260553

"Identification for Electrical Systems."

B. Install engraved phenolic nameplate with instrument identification.

3.6 CLEANING

A. Remove grease, mastic, adhesives, dust, dirt, stains, fingerprints, labels, and other foreign

materials from exposed interior and exterior surfaces.

B. Wash and shine glazing.

C. Polish glossy surfaces to a clean shine.

3.7 CHECK-OUT PROCEDURES

A. Check installed products before continuity tests, leak tests, and calibration.

B. Check temperature instruments for proper location and accessibility.

C. Verify sensing element type and proper material.

D. Verify location and length.

E. Verify that wiring is correct and secure.

3.8 ADJUSTMENT, CALIBRATION, AND TESTING

A. Description:

1. Calibrate each instrument installed that is not factory calibrated and provided with

calibration documentation.

2. Provide a written description of proposed field procedures and equipment for calibrating

each type of instrument. Submit procedures before calibration and adjustment.



DES MOINES, IOWA

23092327

3. For each analog instrument, make a three-point test of calibration for both linearity and

accuracy.

4. Equipment and procedures used for calibration shall meet instrument manufacturer's

written instructions.

5. Provide diagnostic and test equipment for calibration and adjustment.

6. Field instruments and equipment used to test and calibrate installed instruments shall

have accuracy at least twice the instrument accuracy being calibrated. For example, an

installed instrument with an accuracy of 1 percent shall be checked by an instrument with

an accuracy of 0.5 percent.

7. Calibrate each instrument according to instrument instruction manual supplied by

manufacturer.

8. If after calibration indicated performance cannot be achieved, replace out-of-tolerance

instruments.

9. Comply with field-testing requirements and procedures indicated by ASHRAE

Guideline 11, "Field Testing of HVAC Control Components," in the absence of specific

requirements and to supplement requirements indicated.

B. Analog Signals:

1. Check analog voltage signals using a precision voltage meter at zero, 50, and 100

percent.

2. Check analog current signals using a precision current meter at zero, 50, and 100 percent.

3. Check resistance signals for temperature sensors at zero, 50, and 100 percent of operating

span using a precision-resistance source.

C. Digital Signals:

1. Check digital signals using a jumper wire.

2. Check digital signals using an ohmmeter to test for contact.

D. Sensors: Check sensors at zero, 50, and 100 percent of Project design values.

E. Switches: Calibrate switches to make or break contact at set points indicated.

F. Transmitters:

1. Check and calibrate transmitters at zero, 50, and 100 percent of Project design values.

2. Calibrate resistance temperature transmitters at zero, 50, and 100 percent of span using a

precision-resistance source.

FACILITY NATURAL-GAS PIPING 231123 - 1


DES MOINES, IOWA

231123

SECTION 231123 - FACILITY NATURAL-GAS PIPING

PART 1 - GENERAL




1.2 SUMMARY


1. Pipes, tubes, and fittings.

2. Piping specialties.

3. Piping and tubing joining materials.

4. Valves.


A. Minimum Operating-Pressure Ratings:

1. Piping and Valves: 100 psig minimum unless otherwise indicated.

B. Delegated Design: Design restraints and anchors for natural-gas piping and equipment,

including comprehensive engineering analysis by a qualified professional engineer, using

performance requirements and design criteria indicated.


A. Steel Support Welding Qualifications: Qualify procedures and personnel according to

AWS D1.1/D1.1M, "Structural Welding Code - Steel."

B. Pipe Welding Qualifications: Qualify procedures and operators according to ASME Boiler and



A. Handling Flammable Liquids: Remove and dispose of liquids from existing natural-gas piping

according to requirements of authorities having jurisdiction.

B. Deliver pipes and tubes with factory-applied end caps. Maintain end caps through shipping,

storage, and handling to prevent pipe end damage and to prevent entrance of dirt, debris, and

moisture.



DES MOINES, IOWA

231123

C. Store and handle pipes and tubes having factory-applied protective coatings to avoid damaging

coating, and protect from direct sunlight.

1.6 PROJECT CONDITIONS

A. Perform site survey, research public utility records, and verify existing utility locations. Contact

utility-locating service for area where Project is located.

B. Interruption of Existing Natural-Gas Service: Do not interrupt natural-gas service to facilities

occupied by Owner or others unless permitted under the following conditions and then only

after arranging to provide purging and startup of natural-gas supply according to requirements

indicated:

1. Notify Owner no fewer than two days in advance of proposed interruption of natural-gas

service.

2. Do not proceed with interruption of natural-gas service without Owner's written

permission.

1.7 COORDINATION

A. Coordinate sizes and locations of concrete bases with actual equipment provided.

PART 2 - PRODUCTS

2.1 PIPES, TUBES, AND FITTINGS

A. Steel Pipe: ASTM A 53/A 53M, black steel, Schedule 40, Type E or S, Grade B.

1. Malleable-Iron Threaded Fittings: ASME B16.3, Class 150, standard pattern.

2. Wrought-Steel Welding Fittings: ASTM A 234/A 234M for butt welding and socket

welding.

3. Unions: ASME B16.39, Class 150, malleable iron with brass-to-iron seat, ground joint,

and threaded ends.

4. Forged-Steel Flanges and Flanged Fittings: ASME B16.5, minimum Class 150, including

bolts, nuts, and gaskets of the following material group, end connections, and facings:

a. Material Group: 1.1.

b. End Connections: Threaded or butt welding to match pipe.

c. Lapped Face: Not permitted underground.

d. Gasket Materials: ASME B16.20, metallic, flat, asbestos free, aluminum o-rings,

and spiral-wound metal gaskets.

e. Bolts and Nuts: ASME B18.2.1, carbon steel aboveground and stainless steel

underground.

5. Mechanical Couplings:

a. Steel flanges and tube with epoxy finish.

b. Buna-nitrile seals.



DES MOINES, IOWA

231123

c. Steel bolts, washers, and nuts.

d. Coupling shall be capable of joining PE pipe to PE pipe, steel pipe to PE pipe, or

steel pipe to steel pipe.

e. Steel body couplings installed underground on plastic pipe shall be factory

equipped with anode.

2.2 JOINING MATERIALS

A. Joint Compound and Tape: Suitable for natural gas.

B. Welding Filler Metals: Comply with AWS D10.12/D10.12M for welding materials appropriate

for wall thickness and chemical analysis of steel pipe being welded.

2.3 MANUAL GAS SHUTOFF VALVES

A. General Requirements for Metallic Valves, NPS 2 and Smaller: Comply with ASME B16.33.

1. CWP Rating: 125 psig.

2. Threaded Ends: Comply with ASME B1.20.1.

3. Dryseal Threads on Flare Ends: Comply with ASME B1.20.3.

4. Tamperproof Feature: Locking feature for valves indicated in "Underground Manual Gas

Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule"

Articles.

5. Listing: Listed and labeled by an NRTL acceptable to authorities having jurisdiction for

valves 1 inch and smaller.

6. Service Mark: Valves 1-1/4 inches to NPS 2 shall have initials "WOG" permanently

marked on valve body.

B. Two-Piece, Full-Port, Bronze Ball Valves with Bronze Trim: MSS SP-110.

1. Body: Bronze, complying with ASTM B 584.

2. Ball: Chrome-plated bronze.

3. Stem: Bronze; blowout proof.

4. Seats: Reinforced TFE; blowout proof.

5. Packing: Threaded-body packnut design with adjustable-stem packing.

6. Ends: Threaded, flared, or socket as indicated in "Underground Manual Gas Shutoff

Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles.

7. CWP Rating: 600 psig.

8. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to

authorities having jurisdiction.

9. Service: Suitable for natural-gas service with "WOG" indicated on valve body.

C. Bronze Plug Valves: MSS SP-78.

1. Body: Bronze, complying with ASTM B 584.

2. Plug: Bronze.

3. Ends: Threaded, socket, or flanged as indicated in "Underground Manual Gas Shutoff

Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles.

4. Operator: Square head or lug type with tamperproof feature where indicated.



DES MOINES, IOWA

231123

5. Pressure Class: 125 psig.

6. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to


7. Service: Suitable for natural-gas service with "WOG" indicated on valve body.

2.4 DIELECTRIC FITTINGS

A. General Requirements: Assembly of copper alloy and ferrous materials with separating

nonconductive insulating material. Include end connections compatible with pipes to be joined.

B. Dielectric Unions:

1. Description:

a. Standard: ASSE 1079.

b. Pressure Rating: 125 psig minimum at 180 deg F.

c. End Connections: Solder-joint copper alloy and threaded ferrous.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine roughing-in for natural-gas piping system to verify actual locations of piping

connections before equipment installation.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Close equipment shutoff valves before turning off natural gas to premises or piping section.

B. Inspect natural-gas piping according to the International Fuel Gas Code to determine that

natural-gas utilization devices are turned off in piping section affected.

C. Comply with the International Fuel Gas Code requirements for prevention of accidental

ignition.

3.3 INDOOR PIPING INSTALLATION

A. Comply with the International Fuel Gas Code for installation and purging of natural-gas piping.

B. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping

systems. Indicated locations and arrangements are used to size pipe and calculate friction loss,

expansion, and other design considerations. Install piping as indicated unless deviations to

layout are approved on Coordination Drawings.



DES MOINES, IOWA

231123

C. Install piping at right angles or parallel to building walls. Diagonal runs are prohibited unless

specifically indicated otherwise.

D. Locate valves for easy access.

E. Install natural-gas piping at uniform grade of 2 percent down toward drip and sediment traps.

F. Install piping free of sags and bends.

G. Install fittings for changes in direction and branch connections.

H. Verify final equipment locations for roughing-in.

I. Comply with requirements in Sections specifying gas-fired appliances and equipment for

roughing-in requirements.

J. Drips and Sediment Traps: Install drips at points where condensate may collect, including

service-meter outlets. Locate where accessible to permit cleaning and emptying. Do not install

where condensate is subject to freezing.

1. Construct drips and sediment traps using tee fitting with bottom outlet plugged or capped.

Use nipple a minimum length of 3 pipe diameters, but not less than 3 inches long and

same size as connected pipe. Install with space below bottom of drip to remove plug or

cap.

K. Use eccentric reducer fittings to make reductions in pipe sizes. Install fittings with level side

down.

L. Connect branch piping from top or side of horizontal piping.

M. Install unions in pipes NPS 2 and smaller, adjacent to each valve, at final connection to each

piece of equipment. Unions are not required at flanged connections.

N. Do not use natural-gas piping as grounding electrode.

3.4 PIPING JOINT CONSTRUCTION

A. Ream ends of pipes and tubes and remove burrs.

B. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before

assembly.

C. Threaded Joints:

1. Thread pipe with tapered pipe threads complying with ASME B1.20.1.

2. Cut threads full and clean using sharp dies.

3. Ream threaded pipe ends to remove burrs and restore full inside diameter of pipe.

4. Apply appropriate tape or thread compound to external pipe threads unless dryseal

threading is specified.

5. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or

damaged. Do not use pipe sections that have cracked or open welds.



DES MOINES, IOWA

231123

D. Welded Joints:

1. Construct joints according to AWS D10.12/D10.12M, using qualified processes and

welding operators.

2. Bevel plain ends of steel pipe.

3. Patch factory-applied protective coating as recommended by manufacturer at field welds

and where damage to coating occurs during construction.

E. Flanged Joints: Install gasket material, size, type, and thickness appropriate for natural-gas

service. Install gasket concentrically positioned.

F. Flared Joints: Cut tubing with roll cutting tool. Flare tube end with tool to result in flare

dimensions complying with SAE J513. Tighten finger tight, then use wrench. Do not

overtighten.

3.5 HANGER AND SUPPORT INSTALLATION

A. Comply with requirements for pipe hangers and supports specified in Section 230529 "Hangers

and Supports for HVAC Piping and Equipment."

B. Install hangers for horizontal steel piping with the following maximum spacing and minimum

rod sizes:

1. NPS 1 and Smaller: Maximum span, 96 inches; minimum rod size, 3/8 inch.

2. NPS 1-1/4: Maximum span, 108 inches; minimum rod size, 3/8 inch.

3. NPS 1-1/2 and NPS 2: Maximum span, 108 inches; minimum rod size, 3/8 inch.

4. NPS 2-1/2 to NPS 3-1/2: Maximum span, 10 feet; minimum rod size, 1/2 inch.

3.6 CONNECTIONS

A. Connect to utility's gas main according to utility's procedures and requirements.

B. Install natural-gas piping electrically continuous, and bonded to gas appliance equipment

grounding conductor of the circuit powering the appliance according to NFPA 70.

C. Install piping adjacent to appliances to allow service and maintenance of appliances.

D. Connect piping to appliances using manual gas shutoff valves and unions. Install valve within

72 inches of each gas-fired appliance and equipment. Install union between valve and

appliances or equipment.

E. Sediment Traps: Install tee fitting with capped nipple in bottom to form drip, as close as

practical to inlet of each appliance.

3.7 LABELING AND IDENTIFYING

A. Comply with requirements in Section 230553 "Identification for HVAC Piping and Equipment"

for piping and valve identification.



DES MOINES, IOWA

231123


A. Perform tests and inspections.

B. Tests and Inspections:

1. Test, inspect, and purge natural gas according to the International Fuel Gas Code and


C. Natural-gas piping will be considered defective if it does not pass tests and inspections.

D. Prepare test and inspection reports.

3.9 INDOOR PIPING SCHEDULE

A. Aboveground piping shall be one of the following:

1. Steel pipe with malleable-iron fittings and threaded joints.

2. Steel pipe with steel welding fittings and welded joints.

3.10 ABOVEGROUND MANUAL GAS SHUTOFF VALVE SCHEDULE

A. Valves for pipe sizes NPS 2 and smaller shall be one of the following:

1. Two-piece, full-port, bronze ball valves with bronze trim.

2. Bronze plug valve.

B. Valves for pipe sizes NPS 2-1/2 and larger shall be one of the following:

1. Two-piece, full-port, bronze ball valves with bronze trim.

2. Bronze plug valve.


HYDRONIC PIPING 232113 - 1


DES MOINES, IOWA

232113

SECTION 232113 - HYDRONIC PIPING

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes pipe and fitting materials and joining methods for the following:

1. Hot-water heating piping.


3. Air-vent piping.

4. Safety-valve-inlet and -outlet piping.


A. Steel Support Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M,

"Structural Welding Code - Steel."

B. Pipe Welding: Qualify procedures and operators according to ASME Boiler and Pressure Vessel

Code: Section IX.

1. Comply with ASME B31.9, "Building Services Piping," for materials, products, and

installation.

2. Certify that each welder has passed AWS qualification tests for welding processes

involved and that certification is current.

PART 2 - PRODUCTS


A. Hydronic piping components and installation shall be capable of withstanding the following

minimum working pressure and temperature unless otherwise indicated:

1. Hot-Water Heating Piping: 125 psig at 200 deg F.

2. Heat Pump Loop-Water Piping: 125 psig at 200 deg F.

3. Condensate-Drain Piping: 150 deg F.

4. Air-Vent Piping: 200 deg F.

5. Safety-Valve-Inlet and -Outlet Piping: Equal to the pressure of the piping system to

which it is attached.



DES MOINES, IOWA

232113

2.2 COPPER TUBE AND FITTINGS

A. Drawn-Temper Copper Tubing: ASTM B 88, Type K.

B. DWV Copper Tubing: ASTM B 306, Type DWV.

C. Copper, Mechanically Formed Tee Option: For forming T-branch on copper water tube.

D. Wrought-Copper Unions: ASME B16.22.

2.3 STEEL PIPE AND FITTINGS

A. Steel Pipe: ASTM A 53/A 53M, black steel with plain ends; welded and seamless, Grade B, and

wall thickness as indicated in "Piping Applications" Article.

B. Cast-Iron Threaded Fittings: ASME B16.4; Classes 125 as indicated in "Piping Applications"

Article.

C. Malleable-Iron Threaded Fittings: ASME B16.3, Classes 150 as indicated in "Piping

Applications" Article.

D. Malleable-Iron Unions: ASME B16.39; Classes 150 as indicated in "Piping Applications"

Article.

E. Cast-Iron Pipe Flanges and Flanged Fittings: ASME B16.1, Classes 125; raised ground face,

and bolt holes spot faced as indicated in "Piping Applications" Article.

F. Wrought-Steel Fittings: ASTM A 234/A 234M, wall thickness to match adjoining pipe.

G. Wrought Cast- and Forged-Steel Flanges and Flanged Fittings: ASME B16.5, including bolts,

nuts, and gaskets of the following material group, end connections, and facings:

1. Material Group: 1.1.

2. End Connections: Butt welding.

3. Facings: Raised face.

H. Grooved Mechanical-Joint Fittings and Couplings:

1. Joint Fittings: ASTM A 536, Grade 65-45-12 ductile iron; ASTM A 47/A 47M,

Grade 32510 malleable iron; ASTM A 53/A 53M, Type F, E, or S, Grade B fabricated

steel; or ASTM A 106/A 106M, Grade B steel fittings with grooves or shoulders

constructed to accept grooved-end couplings; with nuts, bolts, locking pin, locking

toggle, or lugs to secure grooved pipe and fittings.

2. Couplings: Ductile- or malleable-iron housing and EPDM or nitrile gasket of central

cavity pressure-responsive design; with nuts, bolts, locking pin, locking toggle, or lugs to

secure grooved pipe and fittings.

I. Steel Pipe Nipples: ASTM A 733, made of same materials and wall thicknesses as pipe in

which they are installed.



DES MOINES, IOWA

232113

2.4 JOINING MATERIALS

A. Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system

contents.

1. ASME B16.21, nonmetallic, flat, asbestos free, 1/8-inch maximum thickness unless

otherwise indicated.

a. Full-Face Type: For flat-face, Class 125, cast-iron and cast-bronze flanges.

b. Narrow-Face Type: For raised-face, Class 250, cast-iron and steel flanges.

B. Flange Bolts and Nuts: ASME B18.2.1, carbon steel, unless otherwise indicated.

C. Solder Filler Metals: ASTM B 32, lead-free alloys. Include water-flushable flux according to

ASTM B 813.

D. Brazing Filler Metals: AWS A5.8/A5.8M, BCuP Series, copper-phosphorus alloys for joining

copper with copper; or BAg-1, silver alloy for joining copper with bronze or steel.

E. Welding Filler Metals: Comply with AWS D10.12M/D10.12 for welding materials appropriate

for wall thickness and chemical analysis of steel pipe being welded.

F. Gasket Material: Thickness, material, and type suitable for fluid to be handled and working

temperatures and pressures.

2.5 DIELECTRIC FITTINGS

A. General Requirements: Assembly of copper alloy and ferrous materials with separating

nonconductive insulating material. Include end connections compatible with pipes to be joined.

B. Dielectric Unions:

1. Description:


b. Pressure Rating: 125 psig minimum at 180 deg F.

c. End Connections: Solder-joint copper alloy and threaded ferrous.

C. Dielectric Flanges:

1. Description:


b. Factory-fabricated, bolted, companion-flange assembly.

c. Pressure Rating: 125 psig minimum at 180 deg F.

d. End Connections: Solder-joint copper alloy and threaded ferrous; threaded solder-

joint copper alloy and threaded ferrous.



DES MOINES, IOWA

232113

PART 3 - EXECUTION

3.1 PIPING APPLICATIONS

A. Hot-water heating piping, aboveground, NPS 2 and smaller, shall be any of the following:

1. Schedule 40, Grade B, Type 96 steel pipe; Class 125, cast-iron fittings or Class 150,

malleable-iron fittings; cast-iron flanges and flange fittings; and threaded joints.

B. Hot-water heating piping, aboveground, NPS 2-1/2 and larger, shall be any of the following:

1. Schedule 40 steel pipe, wrought-steel fittings and wrought-cast or forged-steel flanges

and flange fittings, and welded and flanged joints.

2. Schedule 40 steel pipe; grooved, mechanical joint coupling and fittings; and grooved,

mechanical joints.

C. Condensate-Drain Piping: Type DWV, drawn-temper copper tubing, wrought-copper fittings,

and soldered joints.

D. Air-Vent Piping:

1. Inlet: Same as service.

2. Outlet: Type K, annealed-temper copper tubing with soldered or flared joints.

E. Safety-Valve-Inlet and -Outlet Piping for Hot-Water Piping: Same materials and joining

methods as for piping specified for the service in which safety valve is installed with metal-to-

plastic transition fittings for plastic piping systems according to piping manufacturer's written

instructions.

3.2 PIPING INSTALLATIONS

A. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping

systems. Install piping as indicated unless deviations to layout are approved on Coordination

Drawings.

B. Install piping at right angles or parallel to building walls. Diagonal runs are prohibited unless

specifically indicated otherwise.

C. Install piping to permit valve servicing.

D. Install piping at indicated slopes.

E. Install piping free of sags and bends.

F. Install fittings for changes in direction and branch connections.

G. Install piping to allow application of insulation.

H. Select system components with pressure rating equal to or greater than system operating

pressure.



DES MOINES, IOWA

232113

I. Install groups of pipes parallel to each other, spaced to permit applying insulation and servicing

of valves.

J. Install drains, consisting of a tee fitting, NPS 3/4 ball valve, and short NPS 3/4 threaded nipple

with cap, at low points in piping system mains and elsewhere as required for system drainage.

K. Install piping at a uniform grade of 0.2 percent upward in direction of flow.

L. Reduce pipe sizes using eccentric reducer fitting installed with level side up.

M. Install branch connections to mains using tee fittings in main pipe, with the branch connected to

the bottom of the main pipe. For up-feed risers, connect the branch to the top of the main pipe.

N. Install valves according to Section 230523.12 "Ball Valves for HVAC Piping,"

Section 230523.13 "Butterfly Valves for HVAC Piping," and Section 230523.14 "Check Valves

for HVAC Piping."

O. Install unions in piping, NPS 2 and smaller, adjacent to valves, at final connections of

equipment, and elsewhere as indicated.

P. Install flanges in piping, NPS 2-1/2 and larger, at final connections of equipment and elsewhere

as indicated.

Q. Install shutoff valve immediately upstream of each dielectric fitting.

R. Comply with requirements in Section 230553 "Identification for HVAC Piping and Equipment"

for identifying piping.

3.3 DIELECTRIC FITTING INSTALLATION

A. Install dielectric fittings in piping at connections of dissimilar metal piping and tubing.

B. Dielectric Fittings for NPS 2 and Smaller: Use dielectric unions.

C. Dielectric Fittings for NPS 2-1/2 to NPS 4: Use dielectric flanges.

3.4 HANGERS AND SUPPORTS

A. Comply with requirements in Section 230529 "Hangers and Supports for HVAC Piping and

Equipment" for hanger, support, and anchor devices. Comply with the following requirements

for maximum spacing of supports.

B. Install the following pipe attachments:

1. Adjustable steel clevis hangers for individual horizontal piping less than 20 feet long.

2. Provide copper-clad hangers and supports for hangers and supports in direct contact with

copper pipe.

C. Install hangers for steel piping with the following maximum spacing and minimum rod sizes:



DES MOINES, IOWA

232113

1. NPS 3/4: Maximum span, 7 feet.

2. NPS 1: Maximum span, 7 feet.

3. NPS 1-1/2: Maximum span, 9 feet.

4. NPS 2: Maximum span, 10 feet.

5. NPS 2-1/2: Maximum span, 11 feet.

6. NPS 3 and Larger: Maximum span, 12 feet.

D. Install hangers for drawn-temper copper piping with the following maximum spacing and

minimum rod sizes:

1. NPS 3/4: Maximum span, 5 feet; minimum rod size, 1/4 inch.

2. NPS 1: Maximum span, 6 feet; minimum rod size, 1/4 inch.

3. NPS 1-1/4Maximum span, 7 feet; minimum rod size, 3/8 inch.

4. NPS 1-1/2: Maximum span, 8 feet; minimum rod size, 3/8 inch.

5. NPS 2: Maximum span, 8 feet; minimum rod size, 3/8 inch.

3.5 PIPE JOINT CONSTRUCTION

A. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.

B. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before

assembly.

C. Soldered Joints: Apply ASTM B 813, water-flushable flux, unless otherwise indicated, to tube

end. Construct joints according to ASTM B 828 or CDA's "Copper Tube Handbook," using

lead-free solder alloy complying with ASTM B 32.

D. Brazed Joints: Construct joints according to AWS's "Brazing Handbook," "Pipe and Tube"

Chapter, using copper-phosphorus brazing filler metal complying with AWS A5.8/A5.8M.

E. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1. Cut

threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restore

full ID. Join pipe fittings and valves as follows:

1. Apply appropriate tape or thread compound to external pipe threads unless dry seal

threading is specified.

2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or

damaged. Do not use pipe sections that have cracked or open welds.

F. Welded Joints: Construct joints according to AWS D10.12M/D10.12, using qualified processes

and welding operators according to "Quality Assurance" Article.

G. Flanged Joints: Select appropriate gasket material, size, type, and thickness for service

application. Install gasket concentrically positioned. Use suitable lubricants on bolt threads.

H. Grooved Joints: Assemble joints with coupling and gasket, lubricant, and bolts. Cut or roll

grooves in ends of pipe based on pipe and coupling manufacturer's written instructions for pipe

wall thickness. Use grooved-end fittings and rigid, grooved-end-pipe couplings.



DES MOINES, IOWA

232113

3.6 TERMINAL EQUIPMENT CONNECTIONS

A. Sizes for supply and return piping connections shall be the same as or larger than equipment

connections.

B. Install ports for pressure gages and thermometers as shown on flow diagram. Comply with

requirements in Section 230519 "Meters and Gages for HVAC Piping."

3.7 CHEMICAL TREATMENT

A. Perform an analysis of makeup water to determine type and quantities of chemical treatment

needed to keep system free of scale, corrosion, and fouling, and to sustain the following water

characteristics:

1. pH: 9.0 to 10.5.

2. "P" Alkalinity: 100 to 500 ppm.

3. Boron: 100 to 200 ppm.

4. Chemical Oxygen Demand: Maximum of 100 ppm. Revise this value if closed system

contains glycol.

5. Corrosion Inhibitor shall be one of the following:

a. Sodium Nitrate: 1000 to 1500 ppm.

b. Molybdate: 200 to 300 ppm.

c. Chromate: 200 to 300 ppm.

d. Sodium Nitrate Plus Molybdate: 100 to 200 ppm each.

e. Chromate Plus Molybdate: 50 to 100 ppm each.

6. Soluble Copper: Maximum of 0.20 ppm.

7. Tolyiriazole Copper and Yellow Metal Corrosion Inhibitor: Minimum of 10 ppm.

8. Total Suspended Solids: Maximum of 10 ppm.

9. Ammonia: Maximum of 20 ppm.

10. Free Caustic Alkalinity: Maximum of 20 ppm.

11. Microbiological Limits:

a. Total Aerobic Plate Count: Maximum of 1000 organisms/mL.

b. Total Anaerobic Plate Count: Maximum of 100 organisms/mL.

c. Nitrate Reducers: 100 organisms/mL.

d. Sulfate Reducers: Maximum of zero organisms/mL.

e. Iron Bacteria: Maximum of zero organisms/mL.

B. Fill system with fresh water and add liquid alkaline compound with emulsifying agents and

detergents to remove grease and petroleum products from piping. Circulate solution for a

minimum of 24 hours, drain, clean strainer screens, and refill with fresh water.

C. Add initial chemical treatment and maintain water quality in ranges noted above for the first

year of operation.



DES MOINES, IOWA

232113


A. Prepare hydronic piping according to ASME B31.9 and as follows:

1. Leave joints, including welds, uninsulated and exposed for examination during test.

2. Provide temporary restraints for expansion joints that cannot sustain reactions due to test

pressure. If temporary restraints are impractical, isolate expansion joints from testing.

3. Flush hydronic piping systems with clean water; then remove and clean or replace

strainer screens.

4. Isolate equipment from piping. If a valve is used to isolate equipment, its closure shall be

capable of sealing against test pressure without damage to valve. Install blinds in flanged

joints to isolate equipment.

5. Install safety valve, set at a pressure no more than one-third higher than test pressure, to

protect against damage by expanding liquid or other source of overpressure during test.

B. Perform the following tests on hydronic piping:

1. Use ambient temperature water as a testing medium unless there is risk of damage due to

freezing. Another liquid that is safe for workers and compatible with piping may be used.

2. While filling system, use vents installed at high points of system to release air. Use drains

installed at low points for complete draining of test liquid.

3. Determine that system is full of water.

4. Subject piping system to hydrostatic test pressure that is not less than 1.5 times the

system's working pressure. Test pressure shall not exceed maximum pressure for any

vessel, pump, valve, or other component in system under test. Verify that stress due to

pressure at bottom of vertical runs does not exceed 90 percent of specified minimum

yield strength or 1.7 times the "SE" value in Appendix A in ASME B31.9, "Building

Services Piping."

5. After hydrostatic test pressure has been applied for at least 10 minutes, examine piping,

joints, and connections for leakage. Eliminate leaks by tightening, repairing, or replacing

components, and repeat hydrostatic test until there are no leaks.

6. Prepare written report of testing.

C. Perform the following before operating the system:

1. Open manual valves fully.

2. Inspect pumps for proper rotation.

3. Inspect air vents at high points of system and determine if all are installed and operating

freely (automatic type), or bleed air completely (manual type).

4. Set temperature controls so all coils are calling for full flow.

5. Inspect and set operating temperatures of hydronic equipment, such as boilers and

cooling towers, to specified values.

6. Verify lubrication of motors and bearings.


HYDRONIC PIPING SPECIALTIES 232116 - 1


DES MOINES, IOWA

232116

SECTION 232116 - HYDRONIC PIPING SPECIALTIES

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes special-duty valves and specialties for the following:

1. Hot-water heating piping.


3. Condensate-drain piping.

4. Air-vent piping.

5. Safety-valve-inlet and -outlet piping.


A. Product Data: For each type of the following:

1. Valves: Include flow and pressure drop curves based on manufacturer's testing for

calibrated-orifice balancing valves and automatic flow-control valves.

2. Air-control devices.

3. Hydronic specialties.


A. Operation and Maintenance Data: For air-control devices, hydronic specialties, and special-duty

valves to include in emergency, operation, and maintenance manuals.

1.5 MAINTENANCE MATERIAL SUBMITTALS

A. Differential Pressure Meter: For each type of balancing valve and automatic flow control valve,

include flowmeter, probes, hoses, flow charts, and carrying case.


A. Pipe Welding: Qualify procedures and operators according to ASME Boiler and Pressure Vessel

Code: Section IX.



DES MOINES, IOWA

232116

1. Safety valves and pressure vessels shall bear the appropriate ASME label. Fabricate and

stamp air separators and expansion tanks to comply with ASME Boiler and Pressure

Vessel Code: Section VIII, Division 1.

PART 2 - PRODUCTS


A. Hydronic piping components and installation shall be capable of withstanding the following

minimum working pressure and temperature unless otherwise indicated:

1. Hot-Water Heating Piping: 125 psig (kPa) at 200 deg F (93 deg C).

2. Heat Pump Loop-Water Piping: Insert psig (kPa) at 200 deg F (93 deg C).

3. Condensate-Drain Piping: 150 deg F (66 deg C).

4. Air-Vent Piping: 200 deg F (93 deg C).

5. Safety-Valve-Inlet and -Outlet Piping: Equal to the pressure of the piping system to

which it is attached.

2.2 VALVES

A. Check, Ball, and Butterfly Valves: Comply with requirements specified in Section 230523.12

"Ball Valves for HVAC Piping," Section 230523.13 "Butterfly Valves for HVAC Piping," and

Section 230523.14 "Check Valves for HVAC Piping."

B. Bronze, Calibrated-Orifice, Balancing Valves:

1. Body: Bronze, ball or plug type with calibrated orifice or venturi.

2. Ball: Brass or stainless steel.

3. Plug: Resin.

4. Seat: PTFE.

5. End Connections: Threaded or socket.

6. Pressure Gage Connections: Integral seals for portable differential pressure meter.

7. Handle Style: Lever, with memory stop to retain set position.

8. CWP Rating: Minimum 125 psig (860 kPa).

9. Maximum Operating Temperature: 250 deg F (121 deg C).

C. Cast-Iron or Steel, Calibrated-Orifice, Balancing Valves:

1. Body: Cast-iron or steel body, ball, plug, or globe pattern with calibrated orifice or

venturi.

2. Ball: Brass or stainless steel.

3. Stem Seals: EPDM O-rings.

4. Disc: Glass and carbon-filled PTFE.

5. Seat: PTFE.

6. End Connections: Flanged or grooved.

7. Pressure Gage Connections: Integral seals for portable differential pressure meter.

8. Handle Style: Lever, with memory stop to retain set position.

9. CWP Rating: Minimum 125 psig (860 kPa).



DES MOINES, IOWA

232116


D. Diaphragm-Operated Safety Valves: ASME labeled.

1. Body: Bronze or brass.

2. Disc: Glass and carbon-filled PTFE.

3. Seat: Brass.

4. Stem Seals: EPDM O-rings.

5. Diaphragm: EPT.

6. Wetted, Internal Work Parts: Brass and rubber.

7. Inlet Strainer: Removable without system shutdown.

8. Valve Seat and Stem: Noncorrosive.

9. Valve Size, Capacity, and Operating Pressure: Comply with ASME Boiler and Pressure

Vessel Code: Section IV, and selected to suit system in which installed, with operating

pressure and capacity factory set and field adjustable.

2.3 AIR-CONTROL DEVICES

A. Manual Air Vents:

1. Body: Bronze.

2. Internal Parts: Nonferrous.

3. Operator: Screwdriver or thumbscrew.

4. Inlet Connection: NPS 1/2 (DN 15).

5. Discharge Connection: NPS 1/8.

6. CWP Rating: 150 psig (1035 kPa).


2.4 HYDRONIC PIPING SPECIALTIES

A. Y-Pattern Strainers:

1. Body: ASTM A 126, Class B, cast iron with bolted cover and bottom drain connection.

2. End Connections: Threaded ends for NPS 2 (DN 50) and smaller; flanged ends for

NPS 2-1/2 (DN 65) and larger.

3. Strainer Screen: Stainless-steel, 40-mesh strainer, or perforated stainless-steel basket.

4. CWP Rating: 125 psig (860 kPa).

PART 3 - EXECUTION

3.1 VALVE APPLICATIONS

A. Install shutoff-duty valves at each branch connection to supply mains and at supply connection

to each piece of equipment.

B. Install calibrated-orifice, balancing valves in the supply pipe from each boiler.

C. Install check valves at each pump discharge and elsewhere as required to control flow direction.



DES MOINES, IOWA

232116

D. Install safety valves at hot-water generators and elsewhere as required by ASME Boiler and

Pressure Vessel Code. Install drip-pan elbow on safety-valve outlet and pipe without valves to

the outdoors; pipe drain to nearest floor drain or as indicated on Drawings. Comply with ASME

Boiler and Pressure Vessel Code: Section VIII, Division 1, for installation requirements.

E. Install pressure-reducing valves at makeup-water connection to regulate system fill pressure.

3.2 HYDRONIC SPECIALTIES INSTALLATION

A. Install manual air vents at high points in piping, at heat-transfer coils, and elsewhere as required

for system air venting.


HYDRONIC PUMPS 232123 - 1


DES MOINES, IOWA

232123

SECTION 232123 - HYDRONIC PUMPS

PART 1 - GENERAL




1.2 SUMMARY


1. Close-coupled, in-line centrifugal pumps.

1.3 DEFINITIONS

A. Buna-N: Nitrile rubber.

B. EPT: Ethylene propylene terpolymer.


A. Product Data: For each type of pump. Include certified performance curves and rated capacities,

operating characteristics, furnished specialties, final impeller dimensions, and accessories for

each type of product indicated. Indicate pump's operating point on curves.

B. Shop Drawings: For each pump.

1. Show pump layout and connections.

2. Include setting drawings with templates for installing foundation and anchor bolts and

other anchorages.

3. Include diagrams for power, signal, and control wiring.


A. Operation and Maintenance Data: For pumps to include in emergency, operation, and




DES MOINES, IOWA

232123

PART 2 - PRODUCTS

2.1 CLOSE-COUPLED, IN-LINE CENTRIFUGAL PUMPS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the

following:

1. Armstrong Pumps, Inc.

2. Aurora Pump; Pentair Ltd.

3. Bell & Gosset, a Xylem brand.

4. Grundfos Pumps Corporation.

5. PACO Pumps; Grundfos Pumps Corporation, USA.

6. Patterson Pump Company; a Gorman-Rupp company.

7. Peerless Pump Company.

8. TACO Incorporated.

B. Description: Factory-assembled and -tested, centrifugal, overhung-impeller, close-coupled, in-

line pump as defined in HI 1.1-1.2 and HI 1.3; designed for installation with pump and motor

shafts mounted horizontally or vertically.

C. Pump Construction:

1. Casing: Radially split, cast iron, with threaded gage tappings at inlet and

outlet, replaceable bronze wear rings, and threaded companion-flange or union-end

connections.

2. Impeller: ASTM B 584, cast bronze; statically and dynamically balanced, keyed to shaft,

and secured with a locking cap screw. For constant-speed pumps, trim impeller to match

specified performance.

3. Pump Shaft: Steel, with copper-alloy shaft sleeve.

4. Seal: Packing seal consisting of stuffing box with a minimum of four rings of graphite-

impregnated braided yarn with bronze lantern ring between center two graphite rings, and

bronze packing gland.

5. Pump Bearings: Permanently lubricated ball bearings.

D. Motor: Single speed and rigidly mounted to pump casing.

1. Electrical Components, Devices, and Accessories: Listed and labeled as defined in

NFPA 70, by a qualified testing agency, and marked for intended location and

application.

2. Comply with NEMA designation, temperature rating, service factor, and efficiency

requirements for motors specified in Section 230513 "Common Motor Requirements for

HVAC Equipment."

a. Motor Bearings: Permanently lubricated ball bearings.

b. Efficiency: Premium efficient.

http://www.specagent.com/Lookup?ulid=3386

http://www.specagent.com/Lookup?uid=123456942467









DES MOINES, IOWA

232123

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine equipment foundations and anchor-bolt locations for compliance with requirements for

installation tolerances and other conditions affecting performance of the Work.


3.2 PUMP INSTALLATION

A. Comply with HI 1.4.

B. Install pumps to provide access for periodic maintenance including removing motors, impellers,

couplings, and accessories.

C. Independently support pumps and piping so weight of piping is not supported by pumps and

weight of pumps is not supported by piping.

D. Equipment Mounting: Install in-line pumps with continuous-thread hanger rods of size required

to support weight of in-line pumps.

1. Comply with requirements for hangers and supports specified in Section 230529

"Hangers and Supports for HVAC Piping and Equipment."

3.3 ALIGNMENT

A. Pumps shall be factory aligned.

3.4 CONNECTIONS

A. Where installing piping adjacent to pump, allow space for service and maintenance.

B. Connect piping to pumps. Install valves that are same size as piping connected to pumps.

C. Install suction and discharge pipe sizes equal to or greater than diameter of pump nozzles.

D. Install check, shutoff, and balancing valves on discharge side of pumps.

E. Install Y-type strainer and shutoff valve on suction side of pumps.

F. Install pressure gages on pump suction and discharge or at integral pressure-gage tapping, or

install single gage with multiple-input selector valve.

G. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical

Systems."



DES MOINES, IOWA

232123

H. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and

Cables."

3.5 STARTUP SERVICE

A. Perform startup service.

1. Complete installation and startup checks according to manufacturer's written instructions.

2. Check piping connections for tightness.

3. Clean strainers on suction piping.

4. Perform the following startup checks for each pump before starting:

a. Verify bearing lubrication.

b. Verify that pump is free to rotate by hand and that pump for handling hot liquid is

free to rotate with pump hot and cold. If pump is bound or drags, do not operate

until cause of trouble is determined and corrected.

c. Verify that pump is rotating in the correct direction.

5. Prime pump by opening suction valves and closing drains, and prepare pump for

operation.

6. Start motor.

7. Open discharge valve slowly.

3.6 DEMONSTRATION

A. Train Owner's maintenance personnel to adjust, operate, and maintain hydronic pumps.


DRAFT CONTROL FANS 235113.11 - 1


DES MOINES, IOWA

23511311

SECTION 235113.11 - DRAFT CONTROL FANS

PART 1 - GENERAL




1.2 SUMMARY


1. Vent exhaust fans.

B. Related Requirements:

1. Section 235123 "Gas Vents" for listed special gas vents.


A. Product Data.

B. Shop Drawings:

1. Include plans, elevations, sections, and attachment details.

2. Include details of equipment assemblies. Indicate dimensions, weights, loads, required


connection.

3. Detail fabrication and assembly of hangers and seismic restraints.



A. Sample Warranty: For special warranty.


A. Operation and Maintenance Data: For draft control fans to include in emergency, operation, and




DES MOINES, IOWA

23511311

1.6 WARRANTY

A. Special Warranty: Manufacturer agrees to repair or replace components of vent exhaust fans

that fail in materials or workmanship within specified warranty period.

1. Failure includes failure of the fan due to corrosion.

2. Warranty Period: Two years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 VENT EXHAUST FANS


following:

1. ENERVEX Inc.

2. Tjernlund Products, Inc.

B. General: Centrifugal fan with variable-speed control mounted in-line with gas vent.

C. Test Standard: UL 378.

D. Fan Construction:

1. 14-gauge 316L stainless-steel housing with continuous welds.

2. 304 stainless-steel wheel.

3. Backward-inclined centrifugal fan wheel statically and dynamically balanced.

4. Access panel at the discharge area.

5. Stainless steel base.

E. Motor: Fully enclosed, variable-speed duty, permanent-split capacitor, out of the airstream, with

prelubricated and sealed ball bearings. Motor/impeller chassis shall slide away from housing on

polyethylene guides for motor and impeller access.

F. Accessories:

1. 4”x4” junction box with 4’-0” flexible conduit to allow motor to slide away from

impeller.

2. Square to round vent pipe adapter.

3. Fan proving switch.

4. Condensate drain kit.

G. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by






DES MOINES, IOWA

23511311

2.2 MOTORS

A. Comply with NEMA designation, temperature rating, service factor, and efficiency

requirements for motors specified in Section 230513 "Common Motor Requirements for HVAC

Equipment."

2.3 CONTROLLER

A. Tjernlund model CPC-3 or equivalent controller shall monitor and automatically modulate the

fan speed to maintain draft pressure setpoint.

B. Power and Controls:

1. Input power: 115V AC.

2. Control signal to VFD: 0-10 VDC.

3. Digital alarm relay for DDC system: 3.4-5.0 VDC, 24 mA max.

4. Minimum four burner interlock terminal strips compatible with voltage from boiler

control circuits.

5. Control transformer if required.

C. Features:

1. Draft pressure setpoint adjustment.

2. Pre and post purge functions.

3. Large lit display and soft touch keypad.

4. Primary functions programmable from dedicated keys.

5. LED status indicators displaying which interlocked burners are calling for heat and when

the controller safety circuit approves burner operation.

6. Additional LED’s indicating limit(s) status, VFD operation, and fault status.

7. Correct rotation determined by display prompts and adjustable through DIP switches on

circuit board.

8. System fault diagnosis readout and retrieval.

D. Accessories:

1. Pressure transducer adjustable from controller between zero- and minus 1.0-inch wg.

2. Pressure sensing probe.

3. Pressure sensing tubing of required length.

4. Fan proving switch adjustable between between minus 0.07- and minus 0.15-inch wg.

2.4 VARIABLE FREQUENCY DRIVE (VFD)

1. UL listed, pulse width modulated variable frequency drive to generate an adjustable

voltage to frequency three phase output for complete speed control of draft inducer.

2. Housing: 18-gauge aluminized steel with powder coat finish, NEMA 1.

3. VFD shall be factory programmed for specific mode of operation of the draft inducer

being controlled.

4. Closed loop VFD to automatically adjust draft inducer speed based on pressure in the gas

vent.



DES MOINES, IOWA

23511311

5. Accessories:

a. 10’-0” quick connect cable to connect VFD and inducer limit circuits to controller.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install listed components in a manner complying with the listing.

B. Secure draft inducer fans to gas vents with hardware compatible with connected materials.

C. Install draft inducer fans with clearances for service and maintenance.

3.2 CONNECTIONS

A. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical

Systems."

B. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and

Cables."


GAS VENTS 235123 - 1


DES MOINES, IOWA

235123

SECTION 235123 - GAS VENTS

PART 1 - GENERAL




1.2 SUMMARY


1. Listed double-wall vents.


A. Product Data: For each type of product.

1. Include construction details, material descriptions, dimensions of individual components

and profiles, and finishes for product.

B. Shop Drawings: For vents.

1. Include plans, elevations, sections, and attachment details.



connection.

3. Detail fabrication and assembly of hangers.


A. Welding certificates.

B. Sample Warranty: For special warranty.


A. Welding Qualifications: Qualify procedures and personnel according to the following:

1. AWS D1.1/D1.1M, "Structural Welding Code - Steel," for hangers and supports.

2. AWS D9.1/D9.1M, "Sheet Metal Welding Code," for shop and field welding of joints

and seams in vents.

B. Certified Sizing Calculations: Manufacturer shall certify venting system sizing calculations.



DES MOINES, IOWA

235123

PART 2 - PRODUCTS

2.1 LISTED SPECIAL GAS VENTS


following:

1. Heat-Fab, Inc.

2. Metal-Fab, Inc.

3. Security Chimneys International.

4. Selkirk Corporation.

5. Z-Flex.

B. Description: Double-wall metal vents tested according to UL 1738 and rated for 480 deg F

continuously, with positive or negative flue pressure complying with NFPA 211.

C. Construction: Inner shell and outer jacket separated by at least a 1/2-inch airspace.

D. Inner Shell: ASTM A 959, Type 29-4C stainless steel.

E. Outer Jacket: 304 or 430 Stainless steel.

F. Accessories: Tees, elbows, increasers, draft-hood connectors, support assemblies, thimbles,

balancing dampers, and fasteners; fabricated from similar materials and designs as vent-pipe

straight sections; all listed for same assembly.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas and conditions for compliance with requirements for installation tolerances and

other conditions affecting performance of work.


3.2 APPLICATION

A. Listed Special Gas Vent: Condensing gas boilers.

3.3 INSTALLATION OF LISTED VENTS

A. Coordinate installation of equipment supports.

B. Comply with minimum clearances from combustibles and minimum termination heights

according to product listing or NFPA 211, whichever is most stringent.








DES MOINES, IOWA

235123

C. Seal between sections of positive-pressure vents according to manufacturer's written installation

instructions, using sealants recommended by manufacturer.

D. Support vents at intervals recommended by manufacturer to support weight of vents and all

accessories, without exceeding appliance loading.

E. Lap joints in direction of flow.

F. Install balancing damper in branch to each boiler per vent manufacturer recommendations.

3.4 CLEANING

A. After completing system installation, including outlet fittings and devices, inspect exposed

finish. Remove burrs, dirt, and construction debris, and repair damaged finishes.


CONDENSING BOILERS 235216 - 1


DES MOINES, IOWA

235216

SECTION 235216 - CONDENSING BOILERS (B-1 AND B-2)

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes packaged, factory-fabricated and –assembled, gas-fired, finned water-tube

condensing boilers, trim, and accessories for generating hot water.




and profiles, and finishes for boilers.

2. Include rated capacities, operating characteristics, and furnished specialties and

accessories.

B. Shop Drawings: For boilers, boiler trim, and accessories.

1. Include plans, elevations, sections, and mounting details.



connection.



A. Field quality-control reports.


C. Other Informational Submittals:

1. ASME Stamp Certification and Report: Submit "A," "S," or "PP" stamp certificate of

authorization, as required by authorities having jurisdiction, and document hydrostatic

testing of piping external to boiler.



DES MOINES, IOWA

235216


A. Operation and Maintenance Data: For boilers to include in emergency, operation, and


1.6 WARRANTY

A. Manufacturer's Warranty: Manufacturer agrees to repair or replace components of boilers that

fail in materials or workmanship within specified warranty period.

1. Warranty Period:

a. All Components: One year from date of Substantial Completion.

b. Primary Heat Exchanger: 5 years from date of Substantial Completion.

c. Secondary Heat Exchanger: 3 years from date of Substantial Completion.

d. Burner: 10 years from date of substantial completion.

e. Primary Heat Exchanger Damaged by Thermal Stress and Corrosion: Prorated for

20 years from date of Substantial Completion.

PART 2 - PRODUCTS




B. ASME Compliance: Fabricate and label boilers to comply with 2010 ASME Boiler and


C. ASHRAE/IES 90.1 Compliance: Boilers shall have minimum efficiency according to "Gas and

Oil Fired Boilers - Minimum Efficiency Requirements."

D. UL Compliance: Test boilers for compliance with UL 795. Boilers shall be listed and labeled by

a testing agency acceptable to authorities having jurisdiction.

E. Mounting Base: For securing boiler to concrete base.

2.2 WATER-TUBE CONDENSING BOILERS


following:

1. Aerco.

2. Lochinvar, LLC.

3. Thermal Solutions.

B. Description: Factory-fabricated, -assembled, and -tested, copper-finned condensing boiler with

heat exchanger sealed pressure tight, built on a steel base, including insulated jacket; flue-gas



DES MOINES, IOWA

235216

vent; combustion-air intake connections; water supply, return, and condensate drain

connections; and controls.

C. Primary Heat Exchanger:

1. Finned copper tubing with stainless-steel baffles.

2. Cast-iron or Steel headers.

3. Two-pass, vertical configuration.

4. Tubes shall be sealed in header by mechanically rolling tubes in header.

D. Secondary Heat Exchanger:

1. 316L stainless steel.

2. Condensate removal provisions.

3. Mixing loop.

4. Secondary heat exchanger shall be cleanable, repairable, and replaceable.

E. Casing:

1. Jacket: Sheet metal, with snap-in or interlocking closures.

2. Control Compartment Enclosures: NEMA 250, Type 1A.

3. Finish: Powder coated.

4. Insulation: Mineral-fiber insulation surrounding the heat exchanger.

5. Combustion-Air/Flue Connections: Inlet and vent duct collars.

6. Mounting base to secure boiler.

F. Burner:

1. Burner Tubes and Orifices: Stainless steel, for natural gas.

a. Sealed Combustion: Factory-mounted centrifugal fan to draw outside air into

boiler and discharge into burner compartment.

2. Vertical Burner:

a. Ceramic to fire in a 360-degree pattern.

b. Burner shall have a viewing port for observation of burner operation and a factory-

mounted centrifugal fan to supply outdoor air through a replaceable 99 percent

efficient (1-micrometer particles) filter to boiler burner.

c. Fan shall be controlled to prepurge and postpurge the combustion chamber before

firing.

3. Gas Train: Control devices and full-modulation control sequence shall comply with

ASME CSD-1 and UL requirements. In addition to these requirements, include shutoff

cock, pressure regulator, and control valve.

4. Pilot: Intermittent-electric-spark pilot ignition with 100 percent main-valve and pilot-

safety shutoff with electronic supervision of burner flame.

5. Flue-Gas Recirculation System: Centrifugal fans on burner assembly to recirculate flue

gas to decrease emissions to requirements indicated. Complete package integrating

burner, fan, damper, fuel train, and controls. Provide interconnecting external ducting if

required by manufacturer's design.



DES MOINES, IOWA

235216

6. Motors: Comply with requirements for motors specified in Section 230513 "Common

Motor Requirements for HVAC Equipment."

G. Integral Circulating Pump: Cast-iron body and stainless-steel impeller sized for minimum flow

required in heat exchanger. Nonoverloading, in-line pump with split-capacitor motor having

thermal-overload protection and lubricated bearings; designed to operate at specified boiler

pressures and temperatures. Pump shall be pre-piped at factory.

H. Hot-Water Boiler Trim:

1. Include devices sized to comply with ASME Section IV and CSD-1.

2. Hot-Water Temperature Controllers: Operating, firing rate, and high limit.

3. Safety Relief Valve: ASME rated.

4. Pressure and Temperature Gage: Minimum 3-1/2-inch-diameter, combination water-

pressure and -temperature gage. Gages shall have operating-pressure and -temperature

ranges, so normal operating range is about 50 percent of full range.

5. Boiler Air Vent: Automatic or Manual.

6. Drain Valve: Minimum NPS 3/4 hose-end gate valve.

7. Condensate Neutralization Tank: One for each boiler.

2.3 CONTROLS

A. Boiler operating controls shall include the following devices and features:

1. Control transformer.

2. Set-Point Adjust: Set points shall be adjustable.

3. Sequence of Operation: Electric, factory-fabricated panel integral to boiler to control

burner firing rate to maintain remote and/or local leaving supply-water temperature as

noted below. Supply-water temperature shall be reset by Building Automation System.

a. Boiler B-1 shall operate to maintain remote supply-water temperature in loop

water main.

b. Boiler B-2 shall operate as follows:

1) Default (Heat Pump Loop mode): Boiler shall maintain remote supply-

water temperature in loop water main.

2) Override: (Hot Water mode): Boiler shall maintain supply-water

temperature leaving boiler.

B. Burner Operating Controls: To maintain safe operating conditions, burner safety controls limit

burner operation.

1. High Cutoff: Manual reset stops burner if operating conditions rise above maximum

boiler design temperature.

2. Low-Water Cutoff Switch: Electronic probe shall prevent burner operation on low water.

Cutoff switch shall be manual-reset type.

3. Audible Alarm: Factory mounted on control panel with silence switch; shall sound alarm

for above conditions.



DES MOINES, IOWA

235216

C. Building Automation System Interface: Factory install hardware and software to enable

building automation system to monitor, control, and display boiler status and alarms.

1. Hardwired Points:

a. Monitoring: On/off status, common trouble alarm.

b. Control: On/off operation, hot-water-supply temperature set-point adjustment.

2.4 ELECTRICAL POWER

A. Controllers, Electrical Devices, and Wiring: Electrical devices and connections are specified in

electrical Sections.

B. Single-Point Field Power Connection: Factory-installed and -wired switches, motor controllers,

transformers, and other electrical devices necessary shall provide a single-point field power

connection to boiler.

1. House in NEMA 250, Type 1 enclosure.

2. Wiring shall be numbered and color coded to match wiring diagram.

3. Install factory wiring outside of an enclosure in a metal raceway.

4. Field power interface shall be to wire lugs.

5. Provide branch power circuit to each motor and to controls.

6. Provide each motor with overcurrent protection.

2.5 SOURCE QUALITY CONTROL

A. Burner and Hydrostatic Test: Factory adjust burner to eliminate excess oxygen, carbon dioxide,

oxides of nitrogen emissions, and carbon monoxide in flue gas and to achieve combustion

efficiency; perform hydrostatic test.

B. Test and inspect factory-assembled boilers, before shipping, according to 2010 ASME Boiler

and Pressure Vessel Code.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine roughing-in for concrete equipment bases, anchor-bolt sizes and locations, and piping

and electrical connections to verify actual locations, sizes, and other conditions affecting

performance of the Work.

1. Boiler locations indicated on Drawings are approximate. Determine exact locations

before roughing-in for piping and electrical connections.

B. Examine mechanical spaces for suitable conditions where boilers will be installed.

C. Proceed with installation only after unsatisfactory conditions have been corrected.



DES MOINES, IOWA

235216

3.2 BOILER INSTALLATION

A. Equipment Mounting:

1. Install boilers on cast-in-place concrete equipment base(s).

B. Install gas-fired boilers according to NFPA 54.

C. Assemble and install boiler trim, components, and accessories that are not factory installed.

D. Install control and electrical devices furnished with boiler that are not factory mounted.

3.3 CONNECTIONS

A. Piping installation requirements are specified in other Sections. Drawings indicate general

arrangement of piping, fittings, and specialties.

B. Where installing piping adjacent to boiler(s), allow space for service and maintenance.

C. Install piping from condensate and flue drain connections to condensate neutralization tank for

each boiler. Install drain from condensate neutralization tank to nearest floor drain. Piping shall

be at least full size of connection. Provide an isolation valve if required.

D. Connect gas piping to boiler gas-train inlet with dirt leg, shutoff valve, and union or flange.

Piping shall be at least full size of gas-train connection. Provide a reducer if required.

E. Connect hot-water piping to supply- and return-boiler connections with shutoff valve and union

or flange at each connection.

F. Install piping from safety relief valves to nearest floor drain.

G. Install piping from equipment drain connection to nearest floor drain. Piping shall be at least

full size of connection. Provide an isolation valve if required.

H. Boiler Venting:

1. Connect full size to boiler connections. Comply with requirements in Section 235123

"Gas Vents."

I. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical

Systems."

J. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and

Cables."

3.4 CONTROLS CONNECTIONS

A. Install control and electrical power wiring to field-mounted control devices.



DES MOINES, IOWA

235216

B. Connect control wiring between boilers and other equipment to interlock operation as required,

to provide a complete and functioning system.

C. Connect control wiring between boiler control interface and DDC control system for remote

monitoring and control of boilers. Comply with requirements in Section 230923 "Direct Digital

Control (DDC) System for HVAC" and Control Drawings.


A. Manufacturer's Field Service: Engage a factory-authorized service representative to test and

inspect components, assemblies, and equipment installations, including connections.

B. Perform the following tests and inspections:

1. Perform installation and startup checks according to manufacturer's written instructions.

2. Leak Test: Hydrostatic test. Repair leaks and retest until no leaks exist.

3. Operational Test: Start units to confirm proper motor rotation and unit operation. Adjust

air-fuel ratio and combustion.


equipment.

a. Burner Test: Adjust burner to eliminate excess oxygen, carbon dioxide, oxides of

nitrogen emissions, and carbon monoxide in flue gas and to achieve combustion

efficiency.

b. Check and adjust initial operating set points and high- and low-limit safety set

points of fuel supply, water level, and water temperature.

c. Set field-adjustable switches and circuit-breaker trip ranges as indicated.

C. Boiler will be considered defective if it does not pass tests and inspections.


E. Occupancy Adjustments: When requested within 12 months of date of Substantial Completion,

provide on-site assistance in adjusting system to suit actual occupied conditions. Provide up to

two visits to Project during other-than-normal occupancy hours for this purpose.

3.6 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to

adjust, operate, and maintain boilers.


WATER-TUBE BOILERS 235233 - 1


DES MOINES, IOWA

235233

SECTION 235233 - WATER-TUBE BOILERS (B-3 – INCLUDE UNDER ALTERNATE #1 ONLY)

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes packaged, factory-fabricated and -assembled, gas-fired, finned water-tube

boilers, trim, and accessories for generating hot water.




and profiles, and finishes for boilers.

2. Include rated capacities, operating characteristics, and furnished specialties and

accessories.

B. Shop Drawings: For boilers, boiler trim, and accessories.

1. Include plans, elevations, sections, and mounting details.



connection.



A. Field quality-control reports.


C. Other Informational Submittals:

1. ASME Stamp Certification and Report: Submit "A," "S," or "PP" stamp certificate of

authorization, as required by authorities having jurisdiction, and document hydrostatic

testing of piping external to boiler.



DES MOINES, IOWA

235233


A. Operation and Maintenance Data: For boilers to include in emergency, operation, and


1.6 WARRANTY

A. Manufacturer's Warranty: Manufacturer agrees to repair or replace components of boilers that

fail in materials or workmanship within specified warranty period.

1. Warranty Period:

a. All Components: One year from date of Substantial Completion.

b. Heat Exchanger: 5 years from date of Substantial Completion.

c. Burner: 10 years from date of substantial completion.

d. Heat Exchanger Damaged by Thermal Stress and Corrosion: Prorated for 20 years

from date of Substantial Completion.

PART 2 - PRODUCTS




B. ASME Compliance: Fabricate and label boilers to comply with 2010 ASME Boiler and


C. ASHRAE/IES 90.1 Compliance: Boilers shall have minimum efficiency according to "Gas and

Oil Fired Boilers - Minimum Efficiency Requirements."

D. UL Compliance: Test boilers for compliance with UL 795. Boilers shall be listed and labeled by

a testing agency acceptable to authorities having jurisdiction.

2.2 FINNED WATER-TUBE BOILERS


following:

1. Aerco.

2. Lochinvar, LLC.

3. Thermal Solutions.

B. Description: Factory-fabricated, -assembled, and –tested, copper-finned boiler, with tubes

sealed into headers pressure tight, built on a steel base; including insulated jacket, flue-gas vent,

combustion-air-intake connections, water supply and return connections, and controls.

C. Heat Exchanger:



DES MOINES, IOWA

235233

1. Finned copper tubing with stainless-steel baffles.

2. Cast-iron or Steel headers.

3. Two-pass, vertical configuration.

4. Tubes shall be sealed in header by mechanically rolling tubes in header.

D. Casing:

1. Jacket: Sheet metal, with snap-in or interlocking closures.

2. Control Compartment Enclosure: NEMA 250, Type 1A.

3. Finish: Powder coated.

4. Insulation: Mineral-fiber insulation surrounding the heat exchanger.

5. Combustion-Air/Flue Connections: Inlet duct collar and sheet metal closure over burner

compartment.

6. Mounting base to secure boiler.

E. Burner:

1. Burner Tubes and Orifices: Stainless steel, for natural gas.

a. Sealed Combustion: Factory-mounted centrifugal fan to draw outside air into

boiler and discharge into burner compartment.

2. Vertical Burner:

a. Ceramic to fire in a 360-degree pattern.

b. Burner shall have a viewing port for observation of burner operation and a factory-

mounted centrifugal fan to supply outdoor air through a replaceable 99 percent

efficient (1-micrometer particles) filter to boiler burner.

c. Fan shall be controlled to prepurge and postpurge the combustion chamber before

firing.

3. Gas Train: Control devices and full-modulation control sequence shall comply with

ASME CSD-1 and UL requirements. In addition to these requirements, include shutoff

cock, pressure regulator, and control valve.

4. Pilot: Intermittent-electric-spark pilot ignition with 100 percent main-valve and pilot-

safety shutoff with electronic supervision of burner flame.

5. Flue-Gas Recirculation System: Centrifugal fans on burner assembly to recirculate flue

gas to decrease emissions to requirements indicated. Complete package integrating

burner, fan, damper, fuel train, and controls. Provide interconnecting external ducting if

required by manufacturer's design.

6. Motors: Comply with requirements for motors specified in Section 230513 "Common

Motor Requirements for HVAC Equipment."

F. Hot-Water Boiler Trim:

1. Include devices sized to comply with ASME Section IV and CSD-1.

2. Hot-Water Temperature Controllers: Operating, firing rate, and high limit.

3. Safety Relief Valve: ASME rated.

4. Pressure and Temperature Gage: Minimum 3-1/2-inch-diameter, combination water-

pressure and -temperature gage. Gages shall have operating-pressure and -temperature

ranges, so normal operating range is about 50 percent of full range.



DES MOINES, IOWA

235233

5. Boiler Air Vent: Automatic or Manual.

6. Drain Valve: Minimum NPS 3/4 hose-end gate valve.

7. Condensate Neutralization Tank: One for each boiler.

2.3 Controls:

A. Boiler operating controls shall include the following devices and features:

1. Control transformer.

2. Set-Point Adjust: Set points shall be adjustable.

3. Sequence of Operation: Electric, factory-fabricated panel integral to boiler to control

burner firing rate to maintain remote and/or local leaving supply-water temperature as

noted below. Supply-water temperature shall be reset by Building Automation System.

a. Boiler shall operate to maintain supply-water temperature leaving boiler.

B. Burner Operating Controls: To maintain safe operating conditions, burner safety controls limit

burner operation.

1. High Cutoff: Manual reset stops burner if operating conditions rise above maximum

boiler design temperature.

2. Low-Water Cutoff Switch: Electronic probe shall prevent burner operation on low water.

Cutoff switch shall be manual-reset type.

3. Audible Alarm: Factory mounted on control panel with silence switch; shall sound alarm

for above conditions.

C. Building Automation System Interface: Factory install hardware and software to enable

building automation system to monitor, control, and display boiler status and alarms.

1. Hardwired Points:

a. Monitoring: On/off status, common trouble alarm.

b. Control: On/off operation, hot-water-supply temperature set-point adjustment.

2.4 ELECTRICAL POWER

A. Controllers, Electrical Devices, and Wiring: Electrical devices and connections are specified in

electrical Sections.

B. Single-Point Field Power Connection: Factory-installed and -wired switches, motor controllers,

transformers, and other electrical devices necessary shall provide a single-point field power

connection to boiler.

1. House in NEMA 250, Type 1 enclosure.

2. Wiring shall be numbered and color coded to match wiring diagram.

3. Install factory wiring outside of an enclosure in a metal raceway.

4. Field power interface shall be to wire lugs.

5. Provide branch power circuit to each motor and to controls.

6. Provide each motor with overcurrent protection.



DES MOINES, IOWA

235233

2.5 SOURCE QUALITY CONTROL

A. Burner and Hydrostatic Test: Factory adjust burner to eliminate excess oxygen, carbon dioxide,

oxides of nitrogen emissions, and carbon monoxide in flue gas and to achieve combustion

efficiency; perform hydrostatic test.

B. Test and inspect factory-assembled boilers, before shipping, according to 2010 ASME Boiler

and Pressure Vessel Code.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine roughing-in for concrete equipment bases, anchor-bolt sizes and locations, and flue;

piping; controls; and electrical connections to verify actual locations, sizes, and other conditions

affecting boiler performance, maintenance, and operations.

1. Boiler locations indicated on Drawings are approximate. Determine exact locations

before roughing-in for flue, piping, controls, and electrical connections.

B. Examine areas where boilers will be installed for suitable conditions.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 BOILER INSTALLATION

A. Equipment Mounting:

1. Install boilers on cast-in-place concrete equipment base(s).

B. Install gas-fired boilers according to NFPA 54.

C. Assemble and install boiler trim, components, and accessories that are not factory installed.

D. Install control and electrical devices furnished with boiler that are not factory mounted.

E. Install control and power wiring to field-mounted control and electrical devices furnished with

boiler that are not factory installed.

3.3 CONNECTIONS

A. Piping installation requirements are specified in other Sections. Drawings indicate general

arrangement of piping, fittings, and specialties.

B. Where installing piping adjacent to boiler(s), allow space for service and maintenance.



DES MOINES, IOWA

235233

C. Install piping from condensate and flue drain connections to condensate neutralization tank for

each boiler. Install drain from condensate neutralization tank to nearest floor drain. Piping shall

be at least full size of connection. Provide an isolation valve if required.

D. Connect gas piping to boiler gas-train inlet with dirt leg, shutoff valve, and union or flange.

Piping shall be at least full size of gas-train connection. Provide a reducer if required.

E. Connect hot-water piping to supply- and return-boiler connections with shutoff valve and union

or flange at each connection.

F. Install piping from safety relief valves to nearest floor drain.

G. Install piping from equipment drain connection to nearest floor drain. Piping shall be at least

full size of connection. Provide an isolation valve if required.

H. Boiler Venting:

1. Connect full size to boiler connections. Comply with requirements in Section 235123

"Gas Vents."

I. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical

Systems."

J. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and

Cables."

3.4 CONTROLS CONNECTIONS

A. Install control and electrical power wiring to field-mounted control devices.

B. Connect control wiring between boilers and other equipment to interlock operation as required,

to provide a complete and functioning system.

C. Connect control wiring between boiler control interface and DDC control system for remote

monitoring and control of boilers. Comply with requirements in Section 230923 "Direct Digital

Control (DDC) System for HVAC" and Control Drawings.


A. Manufacturer's Field Service: Engage a factory-authorized service representative to test and

inspect components, assemblies, and equipment installations, including connections.

B. Perform the following tests and inspections:

1. Perform installation and startup checks according to manufacturer's written instructions.

2. Leak Test: Hydrostatic test. Repair leaks and retest until no leaks exist.

3. Operational Test: Start units to confirm proper motor rotation and unit operation. Adjust

air-fuel ratio and combustion.


equipment.



DES MOINES, IOWA

235233

a. Burner Test: Adjust burner to eliminate excess oxygen, carbon dioxide, oxides of

nitrogen emissions, and carbon monoxide in flue gas and to achieve combustion

efficiency.

b. Check and adjust initial operating set points and high- and low-limit safety set

points of fuel supply, water level, and water temperature.

c. Set field-adjustable switches and circuit-breaker trip ranges as indicated.

C. Boiler will be considered defective if it does not pass tests and inspections.


E. Occupancy Adjustments: When requested within 12 months of date of Substantial Completion,

provide on-site assistance in adjusting system to suit actual occupied conditions. Provide up to

two visits to Project during other-than-normal occupancy hours for this purpose.

3.6 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to

adjust, operate, and maintain boilers.


DMPS CENTRAL ACADEMY BOILER REPLACEMENT 260000

DES MOINES, IOWA

Division Section Title Pages

SPECIFICATIONS GROUP

DIVISION 26 - ELECTRICAL

260519 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 3

260526 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 2

260529 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 4

260533 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 6

260553 IDENTIFICATION FOR ELECTRICAL SYSTEMS 7

262816 ENCLOSED SWITCHES AND CIRCUIT BREAKERS 5

END OF TABLE OF CONTENTS


DES MOINES, IOWA

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519 - 1

SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

PART 1 - GENERAL




1.2 SUMMARY


1. Building wires and cables rated 600 V and less.

2. Connectors, splices, and terminations rated 600 V and less.

PART 2 - PRODUCTS

2.1 CONDUCTORS AND CABLES


following:

1. Alcan Products Corporation; Alcan Cable Division.

2. Alpha Wire.

3. Belden Inc.

4. Encore Wire Corporation.

5. General Cable Technologies Corporation.

6. Southwire Incorporated.

B. Copper Conductors: Comply with NEMA WC 70/ICEA S-95-658.

C. Conductor Insulation: Comply with NEMA WC 70/ICEA S-95-658 for Type THHN-2-THWN-

2.

2.2 CONNECTORS AND SPLICES


following:

1. AFC Cable Systems, Inc.

http://www.specagent.com/LookUp/?uid=123456817811&mf=04&src=wd








DES MOINES, IOWA


2. Gardner Bender.

3. Hubbell Power Systems, Inc.

4. Ideal Industries, Inc.

5. Ilsco; a branch of Bardes Corporation.

6. NSi Industries LLC.

7. O-Z/Gedney; a brand of the EGS Electrical Group.

8. 3M; Electrical Markets Division.

9. Tyco Electronics.

B. Description: Factory-fabricated connectors and splices of size, ampacity rating, material, type,

and class for application and service indicated.

2.3 SYSTEM DESCRIPTION



B. Comply with NFPA 70.

PART 3 - EXECUTION

3.1 CONDUCTOR MATERIAL APPLICATIONS

A. Branch Circuits: Copper. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and

larger.

3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND

WIRING METHODS

A. Exposed Branch Circuits, Including in Crawlspaces: Type THHN-2-THWN-2, single

conductors in raceway.

B. Branch Circuits Concealed in Ceilings, Walls, and Partitions: Type THHN-2-THWN-2, single

conductors in raceway.

3.3 INSTALLATION OF CONDUCTORS AND CABLES

A. Conceal cables in finished walls, ceilings, and floors unless otherwise indicated.

B. Complete raceway installation between conductor and cable termination points according to

Section 260533 "Raceways and Boxes for Electrical Systems" prior to pulling conductors and

cables.










DES MOINES, IOWA


C. Use manufacturer-approved pulling compound or lubricant where necessary; compound used

must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended

maximum pulling tensions and sidewall pressure values.

D. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will

not damage cables or raceway.

E. Install exposed cables parallel and perpendicular to surfaces of exposed structural members, and

follow surface contours where possible.

F. Support cables according to Section 260529 "Hangers and Supports for Electrical Systems."

G. Complete cable tray systems installation according to Section 260536 "Cable Trays for

Electrical Systems" prior to installing conductors and cables.

3.4 CONNECTIONS

A. Tighten electrical connectors and terminals according to manufacturer's published torque-

tightening values. If manufacturer's torque values are not indicated, use those specified in

UL 486A-486B.

B. Make splices, terminations, and taps that are compatible with conductor material and that

possess equivalent or better mechanical strength and insulation ratings than unspliced

conductors.

C. Wiring at Outlets: Install conductor at each outlet, with at least 6 inches of slack.

3.5 IDENTIFICATION

A. Identify and color-code conductors and cables according to Section 260553 "Identification for

Electrical Systems."

B. Identify each spare conductor at each end with identity number and location of other end of

conductor, and identify as spare conductor.

3.6 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS

A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies. Comply

with requirements in Section 260544 "Sleeves and Sleeve Seals for Electrical Raceways and

Cabling."

3.7 FIRESTOPPING

A. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restore

original fire-resistance rating of assembly.



DES MOINES, IOWA

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526 - 1

SECTION 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes grounding and bonding systems and equipment.




B. Comply with UL 467 for grounding and bonding materials and equipment.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


following:

1. Burndy; Part of Hubbell Electrical Systems.

2. Dossert; AFL Telecommunications LLC.

3. ERICO International Corporation.

4. Fushi Copperweld Inc.

5. Galvan Industries, Inc.; Electrical Products Division, LLC.

6. Harger Lightning and Grounding.

7. ILSCO.

8. O-Z/Gedney; A Brand of the EGS Electrical Group.

9. Robbins Lightning, Inc.

10. Siemens Power Transmission & Distribution, Inc.












DES MOINES, IOWA

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526 - 2

2.2 SYSTEM DESCRIPTION



B. Comply with UL 467 for grounding and bonding materials and equipment.

2.3 CONDUCTORS

A. Insulated Conductors: Copper wire or cable insulated for 600 V unless otherwise required by

applicable Code or authorities having jurisdiction.

PART 3 - EXECUTION

3.1 APPLICATIONS

A. Conductors: Install solid conductor for No. 8 AWG and smaller, and stranded conductors for

No. 6 AWG and larger unless otherwise indicated.

3.2 EQUIPMENT GROUNDING

A. Install insulated equipment grounding conductors with all feeders and branch circuits.

3.3 INSTALLATION

A. Grounding Conductors: Route along shortest and straightest paths possible unless otherwise

indicated or required by Code. Avoid obstructing access or placing conductors where they may

be subjected to strain, impact, or damage.

B. Bonding Straps and Jumpers: Install in locations accessible for inspection and maintenance

except where routed through short lengths of conduit.

1. Bonding to Structure: Bond straps directly to basic structure, taking care not to penetrate

any adjacent parts.

2. Bonding to Equipment Mounted on Vibration Isolation Hangers and Supports: Install

bonding so vibration is not transmitted to rigidly mounted equipment.

3. Use exothermic-welded connectors for outdoor locations; if a disconnect-type connection

is required, use a bolted clamp.



DES MOINES, IOWA

HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 260529 - 1

SECTION 260529 - HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL




1.2 SUMMARY

A. This Section includes the following:

1. Hangers and supports for electrical equipment and systems.

1.3 DEFINITIONS

A. EMT: Electrical metallic tubing.


A. Delegated Design: Design supports for multiple raceways, including comprehensive

engineering analysis by a qualified professional engineer, using performance requirements and

design criteria indicated.

B. Design supports for multiple raceways capable of supporting combined weight of supported

systems and its contents.

C. Design equipment supports capable of supporting combined operating weight of supported

equipment and connected systems and components.

D. Rated Strength: Adequate in tension, shear, and pullout force to resist maximum loads

calculated or imposed for this Project, with a minimum structural safety factor of five times the

applied force.


A. Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural

Welding Code - Steel."


PART 2 - PRODUCTS

2.1 SUPPORT, ANCHORAGE, AND ATTACHMENT COMPONENTS

A. Steel Slotted Support Systems: Comply with MFMA-4, factory-fabricated components for field

assembly.


DES MOINES, IOWA


1. Manufacturers: Subject to compliance with requirements, provide products by one of the

following:

a. Allied Tube & Conduit.

b. Cooper B-Line, Inc.

c. ERICO International Corporation.

d. GS Metals Corp.

e. Thomas & Betts Corporation.

f. Unistrut; Atkore International.

g. Wesanco, Inc.

2. Metallic Coatings: Hot-dip galvanized after fabrication and applied according to MFMA-

4.

3. Nonmetallic Coatings: Manufacturer's standard PVC, polyurethane, or polyester coating

applied according to MFMA-4.

4. Painted Coatings: Manufacturer's standard painted coating applied according to MFMA-

4.

5. Channel Dimensions: Selected for applicable load criteria.

B. Raceway and Cable Supports: As described in NECA 1 and NECA 101.

C. Conduit and Cable Support Devices: Steel hangers, clamps, and associated fittings, designed

for types and sizes of raceway or cable to be supported.

D. Structural Steel for Fabricated Supports and Restraints: ASTM A 36/A 36M, steel plates,

shapes, and bars; black and galvanized.

E. Mounting, Anchoring, and Attachment Components: Items for fastening electrical items or their

supports to building surfaces include the following:

1. Mechanical-Expansion Anchors: Insert-wedge-type, zinc-coated or stainless steel, for use

in hardened portland cement concrete with tension, shear, and pullout capacities

appropriate for supported loads and building materials in which used.

a. Manufacturers: Subject to compliance with requirements, provide products by one

of the following:

1) Cooper B-Line, Inc.

2) Empire Tool and Manufacturing Co., Inc.

3) Hilti, Inc.

http://www.specagent.com/LookUp/?ulid=1736&mf=04&mf=95&src=wd&mf=&src=wd

http://www.specagent.com/LookUp/?uid=123456895789&mf=&src=wd












DES MOINES, IOWA


4) ITW Ramset/Red Head; Illinois Tool Works, Inc.

5) MKT Fastening, LLC.

2. Concrete Inserts: Steel or malleable-iron, slotted support system units similar to MSS

Type 18; complying with MFMA-4 or MSS SP-58.

3. Clamps for Attachment to Steel Structural Elements: MSS SP-58, type suitable for

attached structural element.

4. Through Bolts: Structural type, hex head, and high strength. Comply with ASTM A 325.

5. Toggle Bolts: All-steel springhead type.

6. Hanger Rods: Threaded steel.

2.2 FABRICATED METAL EQUIPMENT SUPPORT ASSEMBLIES

A. Description: Welded or bolted, structural-steel shapes, shop or field fabricated to fit dimensions

of supported equipment.

B. Materials: Comply with requirements in Section 055000 "Metal Fabrications" for steel shapes

and plates.

PART 3 - EXECUTION

3.1 APPLICATION

A. Comply with NECA 1 and NECA 101 for application of hangers and supports for electrical

equipment and systems except if requirements in this Section are stricter.

B. Maximum Support Spacing and Minimum Hanger Rod Size for Raceway: Space supports for

EMT, IMC, and RMC as required by NFPA 70. Minimum rod size shall be 1/4 inch in

diameter.

C. Multiple Raceways or Cables: Install trapeze-type supports fabricated with steel slotted or

other support system, sized so capacity can be increased by at least 25 percent in future without

exceeding specified design load limits.

1. Secure raceways and cables to these supports with two-bolt conduit clamps.

D. Spring-steel clamps designed for supporting single conduits without bolts may be used for 1-

1/2-inch and smaller raceways serving branch circuits and communication systems above

suspended ceilings and for fastening raceways to trapeze supports.

3.2 SUPPORT INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except as specified in this

Article.




DES MOINES, IOWA


B. Raceway Support Methods: In addition to methods described in NECA 1, EMT may be

supported by openings through structure members, as permitted in NFPA 70.

C. Strength of Support Assemblies: Where not indicated, select sizes of components so strength

will be adequate to carry present and future static loads within specified loading limits.

Minimum static design load used for strength determination shall be weight of supported

components plus 200 lb.

D. Mounting and Anchorage of Surface-Mounted Equipment and Components: Anchor and fasten

electrical items and their supports to building structural elements by the following methods

unless otherwise indicated by code:

1. To Wood: Fasten with lag screws or through bolts.

2. To New Concrete: Bolt to concrete inserts.

3. To Masonry: Approved toggle-type bolts on hollow masonry units and expansion anchor

fasteners on solid masonry units.

4. To Existing Concrete: Expansion anchor fasteners.

5. Instead of expansion anchors, powder-actuated driven threaded studs provided with lock

washers and nuts may be used in existing standard-weight concrete 4 inches thick or

greater. Do not use for anchorage to lightweight-aggregate concrete or for slabs less than

4 inches thick.

6. To Steel: Welded threaded studs complying with AWS D1.1/D1.1M, with lock washers

and nuts, Beam clamps (MSS Type 19, 21, 23, 25, or 27) complying with MSS SP-69, or

Spring-tension clamps.

7. To Light Steel: Sheet metal screws.

8. Items Mounted on Hollow Walls and Nonstructural Building Surfaces: Mount control

enclosures, pull and junction boxes, and other devices on slotted-channel racks attached

to substrate by means that meet seismic-restraint strength and anchorage requirements.

E. Drill holes for expansion anchors in concrete at locations and to depths that avoid reinforcing

bars.

3.3 INSTALLATION OF FABRICATED METAL SUPPORTS

A. Comply with installation requirements in Section 055000 "Metal Fabrications" for site-

fabricated metal supports.

B. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation

to support and anchor electrical materials and equipment.

C. Field Welding: Comply with AWS D1.1/D1.1M.



DES MOINES, IOWA

RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533 - 1

SECTION 260533 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL




1.2 SUMMARY


1. Metal conduits, tubing, and fittings.

2. Boxes, enclosures, and cabinets.

1.3 DEFINITIONS

A. ARC: Aluminum rigid conduit.

B. GRC: Galvanized rigid steel conduit.

C. IMC: Intermediate metal conduit.

PART 2 - PRODUCTS

2.1 METAL CONDUITS, TUBING, AND FITTINGS


following:

1. AFC Cable Systems, Inc.

2. Allied Tube & Conduit.

3. Anamet Electrical, Inc.

4. Electri-Flex Company.

5. O-Z/Gedney.

6. Picoma Industries.

7. Republic Conduit.

8. Robroy Industries.











DES MOINES, IOWA


9. Southwire Company.

10. Thomas & Betts Corporation.

11. Western Tube and Conduit Corporation.

12. Wheatland Tube Company.

B. Listing and Labeling: Metal conduits, tubing, and fittings shall be listed and labeled as defined

in NFPA 70, by a qualified testing agency, and marked for intended location and application.

C. GRC: Comply with ANSI C80.1 and UL 6.

1. Comply with NEMA RN 1.

2. Coating Thickness: 0.040 inch, minimum.

D. EMT: Comply with ANSI C80.3 and UL 797.

E. FMC: Comply with UL 1; zinc-coated steel.

F. LFMC: Flexible steel conduit with PVC jacket and complying with UL 360.

G. Fittings for Metal Conduit: Comply with NEMA FB 1 and UL 514B.

1. Fittings for EMT:

a. Material: Steel.

b. Type: Setscrew.

H. Joint Compound for GRC: Approved, as defined in NFPA 70, by authorities having jurisdiction

for use in conduit assemblies, and compounded for use to lubricate and protect threaded conduit

joints from corrosion and to enhance their conductivity.

2.2 BOXES, ENCLOSURES, AND CABINETS


following:

1. Adalet.

2. Cooper Technologies Company; Cooper Crouse-Hinds.

3. EGS/Appleton Electric.

4. Erickson Electrical Equipment Company.

5. FSR Inc.

6. Hoffman.













DES MOINES, IOWA


7. Hubbell Incorporated.

8. Kraloy.

9. Milbank Manufacturing Co.

10. Mono-Systems, Inc.

11. O-Z/Gedney.

12. RACO; Hubbell.

13. Robroy Industries.

14. Spring City Electrical Manufacturing Company.

15. Stahlin Non-Metallic Enclosures.

16. Thomas & Betts Corporation.

17. Wiremold / Legrand.

B. General Requirements for Boxes, Enclosures, and Cabinets: Boxes, enclosures, and cabinets

installed in wet locations shall be listed for use in wet locations.

C. Sheet Metal Outlet and Device Boxes: Comply with NEMA OS 1 and UL 514A.

D. Cast-Metal Outlet and Device Boxes: Comply with NEMA FB 1, ferrous alloy, Type FD, with

gasketed cover.

E. Small Sheet Metal Pull and Junction Boxes: NEMA OS 1.

F. Cast-Metal Access, Pull, and Junction Boxes: Comply with NEMA FB 1 and UL 1773, cast

aluminum or galvanized, cast iron with gasketed cover.

G. Device Box Dimensions: 4 inches square by 2-1/8 inches deep.

PART 3 - EXECUTION

3.1 RACEWAY APPLICATION

A. Indoors: Apply raceway products as specified below unless otherwise indicated:

1. Exposed, Not Subject to Physical Damage: EMT.

2. Exposed, Not Subject to Severe Physical Damage: EMT.

3. Concealed in Ceilings and Interior Walls and Partitions: EMT.













DES MOINES, IOWA


4. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic,

Electric Solenoid, or Motor-Driven Equipment): FMC, except use LFMC in damp or wet

locations.

5. Boxes and Enclosures: NEMA 250, Type 1, except use NEMA 250, Type 4 stainless

steel in damp or wet locations.

B. Minimum Raceway Size: 3/4-inch trade size.

C. Raceway Fittings: Compatible with raceways and suitable for use and location.

1. Rigid and Intermediate Steel Conduit: Use threaded rigid steel conduit fittings unless

otherwise indicated. Comply with NEMA FB 2.10.

2. EMT: Use setscrew, steel fittings. Comply with NEMA FB 2.10.

3. Flexible Conduit: Use only fittings listed for use with flexible conduit. Comply with

NEMA FB 2.20.

D. Install nonferrous conduit or tubing for circuits operating above 60 Hz. Where aluminum

raceways are installed for such circuits and pass through concrete, install in nonmetallic sleeve.

E. Do not install aluminum conduits, boxes, or fittings in contact with concrete or earth.

3.2 INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except where requirements

on Drawings or in this article are stricter. Comply with NECA 102 for aluminum conduits.

Comply with NFPA 70 limitations for types of raceways allowed in specific occupancies and

number of floors.

B. Keep raceways at least 6 inches away from parallel runs of flues and steam or hot-water pipes.

Install horizontal raceway runs above water and steam piping.

C. Complete raceway installation before starting conductor installation.

D. Comply with requirements in Section 260529 "Hangers and Supports for Electrical Systems"

for hangers and supports.

E. Install no more than the equivalent of three 90-degree bends in any conduit run except for

control wiring conduits, for which fewer bends are allowed. Support within 12 inches of

changes in direction.

F. Install conduits parallel or perpendicular to building lines.

G. Support conduit within 12 inches of enclosures to which attached.

H. Threaded Conduit Joints, Exposed to Wet, Damp, Corrosive, or Outdoor Conditions: Apply

listed compound to threads of raceway and fittings before making up joints. Follow compound

manufacturer's written instructions.


DES MOINES, IOWA


I. Raceway Terminations at Locations Subject to Moisture or Vibration: Use insulating bushings

to protect conductors including conductors smaller than No. 4 AWG.

J. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxes

or cabinets. Install bushings on conduits up to 1-1/4-inch trade size and insulated throat metal

bushings on 1-1/2-inch trade size and larger conduits terminated with locknuts. Install insulated

throat metal grounding bushings on service conduits.

K. Install raceways square to the enclosure and terminate at enclosures with locknuts. Install

locknuts hand tight plus 1/4 turn more.

L. Do not rely on locknuts to penetrate nonconductive coatings on enclosures. Remove coatings in

the locknut area prior to assembling conduit to enclosure to assure a continuous ground path.

M. Cut conduit perpendicular to the length. For conduits 2-inch trade size and larger, use roll cutter

or a guide to make cut straight and perpendicular to the length.

N. Install raceway sealing fittings at accessible locations according to NFPA 70 and fill them with

listed sealing compound. For concealed raceways, install each fitting in a flush steel box with a

blank cover plate having a finish similar to that of adjacent plates or surfaces. Install raceway

sealing fittings according to NFPA 70.

O. Install devices to seal raceway interiors at accessible locations. Locate seals so no fittings or

boxes are between the seal and the following changes of environments. Seal the interior of all

raceways at the following points:

1. Where conduits pass from warm to cold locations, such as boundaries of refrigerated

spaces.

2. Where otherwise required by NFPA 70.

P. Flexible Conduit Connections: Comply with NEMA RV 3. Use a maximum of 72 inches of

flexible conduit for equipment subject to vibration, noise transmission, or movement; and for

transformers and motors.

1. Use LFMC in damp or wet locations subject to severe physical damage.

2. Use LFMC or LFNC in damp or wet locations not subject to severe physical damage.

Q. Mount boxes at heights indicated on Drawings. If mounting heights of boxes are not

individually indicated, give priority to ADA requirements. Install boxes with height measured to

center of box unless otherwise indicated.

R. Locate boxes so that cover or plate will not span different building finishes.

S. Fasten junction and pull boxes to or support from building structure. Do not support boxes by

conduits.


DES MOINES, IOWA


3.3 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS

A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies. Comply

with requirements in Section 260544 "Sleeves and Sleeve Seals for Electrical Raceways and

Cabling."

3.4 FIRESTOPPING

A. Install firestopping at penetrations of fire-rated floor and wall assemblies. PROTECTION

B. Protect coatings, finishes, and cabinets from damage and deterioration.

1. Repair damage to galvanized finishes with zinc-rich paint recommended by

manufacturer.

2. Repair damage to PVC coatings or paint finishes with matching touchup coating

recommended by manufacturer.



DES MOINES, IOWA

IDENTIFICATION FOR ELECTRICAL SYSTEMS 260553 - 1

SECTION 260553 - IDENTIFICATION FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL




1.2 SUMMARY


1. Identification for raceways.

2. Identification of power and control cables.

3. Identification for conductors.

4. Warning labels and signs.

5. Instruction signs.

6. Equipment identification labels.

7. Miscellaneous identification products.


A. Comply with ANSI A13.1 and IEEE C2.


C. Comply with 29 CFR 1910.144 and 29 CFR 1910.145.

D. Comply with ANSI Z535.4 for safety signs and labels.

E. Adhesive-attached labeling materials, including label stocks, laminating adhesives, and inks

used by label printers, shall comply with UL 969.

1.4 COORDINATION

A. Coordinate identification names, abbreviations, colors, and other features with requirements in

other Sections requiring identification applications, Drawings, Shop Drawings, manufacturer's

wiring diagrams, and the Operation and Maintenance Manual; and with those required by codes,

standards, and 29 CFR 1910.145. Use consistent designations throughout Project.

B. Coordinate installation of identifying devices with completion of covering and painting of

surfaces where devices are to be applied.


DES MOINES, IOWA


C. Coordinate installation of identifying devices with location of access panels and doors.

D. Install identifying devices before installing acoustical ceilings and similar concealment.

PART 2 - PRODUCTS

2.1 POWER AND CONTROL RACEWAY IDENTIFICATION MATERIALS

A. Comply with ANSI A13.1 for minimum size of letters for legend and for minimum length of

color field for each raceway size.

B. Colors for Raceways Carrying Circuits at 600 V or Less:

1. Black letters on an orange field.

2. Legend: Indicate voltage and system or service type.

C. Vinyl Labels for Raceways Carrying Circuits at 600 V or Less: Preprinted, flexible label

laminated with a clear, weather- and chemical-resistant coating and matching wraparound clear

adhesive tape for securing ends of legend label.

D. Snap-Around Labels for Raceways Carrying Circuits at 600 V or Less: Slit, pretensioned,

flexible, preprinted, color-coded acrylic sleeve, with diameter sized to suit diameter of raceway

or cable it identifies and to stay in place by gripping action.

E. Snap-Around, Color-Coding Bands for Raceways Carrying Circuits at 600 V or Less: Slit,

pretensioned, flexible, solid-colored acrylic sleeve, 2 inches long, with diameter sized to suit

diameter of raceway or cable it identifies and to stay in place by gripping action.

F. Metal Tags: Brass or aluminum, 2 by 2 by 0.05 inch, with stamped legend, punched for use with

self-locking cable tie fastener.

G. Write-On Tags: Polyester tag, 0.010 inch thick, with corrosion-resistant grommet and cable tie

for attachment to conductor or cable.

1. Marker for Tags: Permanent, waterproof, black ink marker recommended by tag

manufacturer.

2. Marker for Tags: Machine-printed, permanent, waterproof, black ink marker

recommended by printer manufacturer.

2.2 POWER AND CONTROL CABLE IDENTIFICATION MATERIALS

A. Comply with ANSI A13.1 for minimum size of letters for legend and for minimum length of

color field for each cable size.

B. Vinyl Labels: Preprinted, flexible label laminated with a clear, weather- and chemical-resistant

coating and matching wraparound clear adhesive tape for securing ends of legend label.

C. Self-Adhesive, Self-Laminating Polyester Labels: Preprinted or write-on, 3-mil-thick flexible

label with acrylic pressure-sensitive adhesive that provides a clear, weather- and chemical-


DES MOINES, IOWA


resistant, self-laminating, protective shield over the legend. Labels sized to fit the cable

diameter such that the clear shield overlaps the entire printed legend.

D. Heat-Shrink Preprinted Tubes: Flame-retardant polyolefin tube with machine-printed

identification label. Sized to suit diameter of and shrinks to fit firmly around cable it identifies.

Full shrink recovery at a maximum of 200 deg F. Comply with UL 224.

E. Metal Tags: Brass or aluminum, 2 by 2 by 0.05 inch, with stamped legend, punched for use with

self-locking cable tie fastener.

F. Snap-Around Labels: Slit, pretensioned, flexible, preprinted, color-coded acrylic sleeve, with

diameter sized to suit diameter of cable it identifies and to stay in place by gripping action.

G. Snap-Around, Color-Coding Bands: Slit, pretensioned, flexible, solid-colored acrylic sleeve, 2

inches long, with diameter sized to suit diameter of cable it identifies and to stay in place by

gripping action.

2.3 CONDUCTOR IDENTIFICATION MATERIALS

A. Color-Coding Conductor Tape: Colored, self-adhesive vinyl tape not less than 3 mils thick by 1

to 2 inches wide.

B. Self-Adhesive, Self-Laminating Polyester Labels: Preprinted, 3-mil-thick flexible label with

acrylic pressure-sensitive adhesive that provides a clear, weather- and chemical-resistant, self-

laminating, protective shield over the legend. Labels sized to fit the conductor diameter such

that the clear shield overlaps the entire printed legend.

C. Snap-Around Labels: Slit, pretensioned, flexible, preprinted, color-coded acrylic sleeve, with

diameter sized to suit diameter of conductor it identifies and to stay in place by gripping action.

D. Snap-Around, Color-Coding Bands: Slit, pretensioned, flexible, solid-colored acrylic sleeve

with diameter sized to suit diameter of conductor it identifies and to stay in place by gripping

action.

E. Heat-Shrink Preprinted Tubes: Flame-retardant polyolefin tube with machine-printed

identification label. Sized to suit diameter of and shrinks to fit firmly around conductor it

identifies. Full shrink recovery at a maximum of 200 deg F. Comply with UL 224.

F. Marker Tapes: Vinyl or vinyl-cloth, self-adhesive wraparound type, with circuit identification

legend machine printed by thermal transfer or equivalent process.

2.4 WARNING LABELS AND SIGNS

A. Comply with NFPA 70 and 29 CFR 1910.145.

B. Self-Adhesive Warning Labels: Factory-printed, multicolor, pressure-sensitive adhesive labels,

configured for display on front cover, door, or other access to equipment unless otherwise

indicated.

C. Baked-Enamel Warning Signs:


DES MOINES, IOWA


1. Preprinted aluminum signs, punched or drilled for fasteners, with colors, legend, and size

required for application.

2. 1/4-inch grommets in corners for mounting.

3. Nominal size, 7 by 10 inches.

D. Metal-Backed, Butyrate Warning Signs:

1. Weather-resistant, nonfading, preprinted, cellulose-acetate butyrate signs with 0.0396-

inch galvanized-steel backing; and with colors, legend, and size required for application.

2. 1/4-inch grommets in corners for mounting.

3. Nominal size, 10 by 14 inches.

E. Warning label and sign shall include, but are not limited to, the following legends:

1. Multiple Power Source Warning: "DANGER - ELECTRICAL SHOCK HAZARD -

EQUIPMENT HAS MULTIPLE POWER SOURCES."

2. Workspace Clearance Warning: "WARNING - OSHA REGULATION - AREA IN

FRONT OF ELECTRICAL EQUIPMENT MUST BE KEPT CLEAR FOR 36 INCHES."

2.5 INSTRUCTION SIGNS

A. Engraved, laminated acrylic or melamine plastic, minimum 1/16 inch thick for signs up to 20

sq. inches and 1/8 inch thick for larger sizes.

1. Engraved legend with black letters on white face.

2. Punched or drilled for mechanical fasteners.

3. Framed with mitered acrylic molding and arranged for attachment at applicable

equipment.

B. Adhesive Film Label: Machine printed, in black, by thermal transfer or equivalent process.

Minimum letter height shall be 3/8 inch.

C. Adhesive Film Label with Clear Protective Overlay: Machine printed, in black, by thermal

transfer or equivalent process. Minimum letter height shall be 3/8 inch. Overlay shall provide a

weatherproof and UV-resistant seal for label.

2.6 EQUIPMENT IDENTIFICATION LABELS

A. Adhesive Film Label: Machine printed, in black, by thermal transfer or equivalent process.

Minimum letter height shall be 3/8 inch.

B. Adhesive Film Label with Clear Protective Overlay: Machine printed, in black, by thermal

transfer or equivalent process. Minimum letter height shall be 3/8 inch. Overlay shall provide a

weatherproof and UV-resistant seal for label.


DES MOINES, IOWA


C. Self-Adhesive, Engraved, Laminated Acrylic or Melamine Label: Adhesive backed, with white

letters on a dark-gray background. Minimum letter height shall be 3/8 inch.

D. Engraved, Laminated Acrylic or Melamine Label: Punched or drilled for screw mounting.

White letters on a dark-gray background. Minimum letter height shall be 3/8 inch.

E. Stenciled Legend: In nonfading, waterproof, black ink or paint. Minimum letter height shall be

1 inch.

2.7 CABLE TIES

A. General-Purpose Cable Ties: Fungus inert, self-extinguishing, one piece, self -locking, Type 6/6

nylon.

1. Minimum Width: 3/16 inch.

2. Tensile Strength at 73 deg F, According to ASTM D 638: 12,000 psi.

3. Temperature Range: Minus 40 to plus 185 deg F.

4. Color: Black except where used for color-coding.

2.8 MISCELLANEOUS IDENTIFICATION PRODUCTS

A. Paint: Comply with requirements in painting Sections for paint materials and application

requirements. Select paint system applicable for surface material and location (exterior or

interior).

B. Fasteners for Labels and Signs: Self-tapping, stainless-steel screws or stainless-steel machine

screws with nuts and flat and lock washers.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Verify identity of each item before installing identification products.

B. Location: Install identification materials and devices at locations for most convenient viewing

without interference with operation and maintenance of equipment.

C. Apply identification devices to surfaces that require finish after completing finish work.

D. Self-Adhesive Identification Products: Clean surfaces before application, using materials and

methods recommended by manufacturer of identification device.

E. Attach signs and plastic labels that are not self-adhesive type with mechanical fasteners

appropriate to the location and substrate.

F. Attach plastic raceway and cable labels that are not self-adhesive type with clear vinyl tape with

adhesive appropriate to the location and substrate.


DES MOINES, IOWA


G. System Identification Color-Coding Bands for Raceways and Cables: Each color-coding band

shall completely encircle cable or conduit. Place adjacent bands of two-color markings in

contact, side by side. Locate bands at changes in direction, at penetrations of walls and floors, at

50-foot maximum intervals in straight runs, and at 25-foot maximum intervals in congested

areas.

H. Aluminum Wraparound Marker Labels and Metal Tags: Secure tight to surface of conductor or

cable at a location with high visibility and accessibility.

I. Cable Ties: For attaching tags. Use general-purpose type, except as listed below:

1. Outdoors: UV-stabilized nylon.

2. In Spaces Handling Environmental Air: Plenum rated.

J. Painted Identification: Comply with requirements in painting Sections for surface preparation

and paint application.

3.2 IDENTIFICATION SCHEDULE

A. Accessible Raceways and Metal-Clad Cables, 600 V or Less, for Branch Circuits More Than

30 A, and 120 V to ground: Identify with self-adhesive vinyl label. Install labels at 30-foot

maximum intervals.

B. Power-Circuit Conductor Identification, 600 V or Less: For conductors in pull and junction

boxes, use color-coding conductor tape to identify the phase.

1. Color-Coding for Phase and Voltage Level Identification, 600 V or Less: Use colors

listed below for ungrounded branch-circuit conductors.

a. Color shall be factory applied or field applied for sizes larger than No. 8 AWG, if

authorities having jurisdiction permit.

b. Colors for 208/120-V Circuits:

1) Phase A: Black.

2) Phase B: Red.

3) Phase C: Blue.

c. Field-Applied, Color-Coding Conductor Tape: Apply in half-lapped turns for a

minimum distance of 6 inches from terminal points and in boxes where splices or

taps are made. Apply last two turns of tape with no tension to prevent possible

unwinding. Locate bands to avoid obscuring factory cable markings.

C. Install instructional sign including the color-code for grounded and ungrounded conductors

using adhesive-film-type labels.

D. Warning Labels for Indoor Cabinets, Boxes, and Enclosures for Power and Lighting: Self-

adhesive warning labels.


DES MOINES, IOWA


1. Comply with 29 CFR 1910.145.

2. Identify system voltage with black letters on an orange background.

3. Apply to exterior of door, cover, or other access.

E. Operating Instruction Signs: Install instruction signs to facilitate proper operation and

maintenance of electrical systems and items to which they connect. Install instruction signs with

approved legend where instructions are needed for system or equipment operation.

F. Equipment Identification Labels: On each unit of equipment, install unique designation label

that is consistent with wiring diagrams, schedules, and the Operation and Maintenance Manual.

Apply labels to disconnect switches and protection equipment, central or master units, control

panels, control stations, terminal cabinets, and racks of each system. Systems include power,

lighting, control, communication, signal, monitoring, and alarm systems unless equipment is

provided with its own identification.

1. Labeling Instructions:

a. Indoor Equipment: Adhesive film label. Unless otherwise indicated, provide a

single line of text with 1/2-inch-high letters on 1-1/2-inch-high label; where two

lines of text are required, use labels 2 inches high.

b. Outdoor Equipment: Engraved, laminated acrylic or melamine label.

c. Elevated Components: Increase sizes of labels and letters to those appropriate for

viewing from the floor.

d. Unless provided with self-adhesive means of attachment, fasten labels with

appropriate mechanical fasteners that do not change the NEMA or NRTL rating of

the enclosure.

2. Equipment to Be Labeled:

a. Panelboards: Typewritten directory of circuits in the location provided by

panelboard manufacturer. Panelboard identification shall be engraved, laminated

acrylic or melamine label.

b. Enclosures and electrical cabinets.

c. Access doors and panels for concealed electrical items.

d. Enclosed switches.

e. Enclosed circuit breakers.



DES MOINES, IOWA

ENCLOSED SWITCHES AND CIRCUIT BREAKERS 262816 - 1

SECTION 262816 - ENCLOSED SWITCHES AND CIRCUIT BREAKERS

PART 1 - GENERAL



Conditions and other Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY


1. Nonfusible switches.

2. Molded-case circuit breakers (MCCBs).

3. Enclosures.

1.3 DEFINITIONS

A. NC: Normally closed.

B. NO: Normally open.

C. SPDT: Single pole, double throw.


A. Product Data: For each type of enclosed switch, circuit breaker, accessory, and component

indicated. Include dimensioned elevations, sections, weights, and manufacturers' technical data

on features, performance, electrical characteristics, ratings, accessories, and finishes.

1. Enclosure types and details for types other than NEMA 250, Type 1.

2. Current and voltage ratings.

3. Short-circuit current ratings (interrupting and withstand, as appropriate).

4. Include evidence of NRTL listing for series rating of installed devices.

5. Detail features, characteristics, ratings, and factory settings of individual overcurrent

protective devices, accessories, and auxiliary components.

B. Shop Drawings: For enclosed switches and circuit breakers. Include plans, elevations, sections,

details, and attachments to other work.

1. Wiring Diagrams: For power, signal, and control wiring.


DES MOINES, IOWA



A. Qualification Data: For qualified testing agency.

B. Field quality-control reports.

1. Test procedures used.

2. Test results that comply with requirements.

3. Results of failed tests and corrective action taken to achieve test results that comply with

requirements.

C. Manufacturer's field service report.


A. Operation and Maintenance Data: For enclosed switches and circuit breakers to include in

emergency, operation, and maintenance manuals. Include the following:

1. Manufacturer's written instructions for testing and adjusting enclosed switches and circuit

breakers.


A. Testing Agency Qualifications: Member company of NETA or an NRTL.

1. Testing Agency's Field Supervisor: Currently certified by NETA to supervise on-site

testing.

B. Source Limitations: Obtain enclosed switches and circuit breakers, overcurrent protective

devices, components, and accessories, within same product category, from single source from

single manufacturer.

C. Product Selection for Restricted Space: Drawings indicate maximum dimensions for enclosed

switches and circuit breakers, including clearances between enclosures, and adjacent surfaces

and other items. Comply with indicated maximum dimensions.

D. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by


E. Comply with NFPA 70.

1.8 PROJECT CONDITIONS

A. Environmental Limitations: Rate equipment for continuous operation under the following

conditions unless otherwise indicated:

1. Ambient Temperature: Not less than minus 22 deg F and not exceeding 104 deg F.

2. Altitude: Not exceeding 6600 feet.


DES MOINES, IOWA


B. Interruption of Existing Electric Service: Do not interrupt electric service to facilities occupied

by Owner or others unless permitted under the following conditions and then only after

arranging to provide temporary electric service according to requirements indicated:

1. Notify Owner no fewer than seven days in advance of proposed interruption of electric

service.

2. Indicate method of providing temporary electric service.

3. Do not proceed with interruption of electric service without Owner's written permission.

4. Comply with NFPA 70E.

1.9 COORDINATION

A. Coordinate layout and installation of switches, circuit breakers, and components with equipment

served and adjacent surfaces. Maintain required workspace clearances and required clearances

for equipment access doors and panels.

PART 2 - PRODUCTS

2.1 NONFUSIBLE SWITCHES


following:

1. Eaton Electrical Inc.; Cutler-Hammer Business Unit.

2. General Electric Company; GE Consumer & Industrial - Electrical Distribution.

3. Siemens Energy & Automation, Inc.

4. Square D; a brand of Schneider Electric.

B. Type HD, Heavy Duty, Single Throw, 240-V ac, 1200 A and Smaller: UL 98 and NEMA KS 1,

horsepower rated, lockable handle with capability to accept three padlocks, and interlocked with

cover in closed position.

C. Accessories:

1. Equipment Ground Kit: Internally mounted and labeled for copper and aluminum ground

conductors.

2. Neutral Kit: Internally mounted; insulated, capable of being grounded and bonded;

labeled for copper and aluminum neutral conductors.

3. Auxiliary Contact Kit: Two NO/NC (Form "C") auxiliary contact(s), arranged to activate

before switch blades open.

4. Hookstick Handle: Allows use of a hookstick to operate the handle.






DES MOINES, IOWA


5. Lugs: Mechanical type, suitable for number, size, and conductor material.

2.2 MOLDED-CASE CIRCUIT BREAKERS

A. Manufacturers: Subject to compliance with requirements, provide products by the following:

1. General Electric.

B. General Requirements: Comply with UL 489, NEMA AB 1, and NEMA AB 3, with

interrupting capacity to comply with available fault currents.

C. Thermal-Magnetic Circuit Breakers: Inverse time-current element for low-level overloads and

instantaneous magnetic trip element for short circuits. Adjustable magnetic trip setting for

circuit-breaker frame sizes 250 A and larger.

D. Adjustable, Instantaneous-Trip Circuit Breakers: Magnetic trip element with front-mounted,

field-adjustable trip setting.

E. Current-Limiting Circuit Breakers: Frame sizes 400 A and smaller, and let-through ratings less

than NEMA FU 1, RK-5.

F. Features and Accessories:

1. Standard frame sizes, trip ratings, and number of poles.

2. Lugs: Mechanical type, suitable for number, size, trip ratings, and conductor material.

3. Application Listing: Appropriate for application; Type SWD for switching fluorescent

lighting loads; Type HID for feeding fluorescent and high-intensity discharge lighting

circuits.

2.3 ENCLOSURES

A. Enclosed Switches and Circuit Breakers: NEMA AB 1, NEMA KS 1, NEMA 250, and UL 50,

to comply with environmental conditions at installed location.

1. Indoor, Dry and Clean Locations: NEMA 250, Type 1.

2. Outdoor Locations: NEMA 250, Type 3R.

3. Other Wet or Damp, Indoor Locations: NEMA 250, Type 4.

4. Indoor Locations Subject to Dust, Falling Dirt, and Dripping Noncorrosive Liquids:

NEMA 250, Type 12.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine elements and surfaces to receive enclosed switches and circuit breakers for compliance

with installation tolerances and other conditions affecting performance of the Work.



DES MOINES, IOWA



3.2 INSTALLATION

A. Install individual wall-mounted switches and circuit breakers with tops at uniform height unless

otherwise indicated.

B. Temporary Lifting Provisions: Remove temporary lifting eyes, channels, and brackets and

temporary blocking of moving parts from enclosures and components.

C. Comply with NECA 1.

3.3 IDENTIFICATION

A. Comply with requirements in Section 260553 "Identification for Electrical Systems."

1. Identify field-installed conductors, interconnecting wiring, and components; provide

warning signs.

2. Label each enclosure with engraved metal or laminated-plastic nameplate.


A. Acceptance Testing Preparation:

1. Test insulation resistance for each enclosed switch and circuit breaker, component,

connecting supply, feeder, and control circuit.

2. Test continuity of each circuit.

B. Tests and Inspections:

1. Perform each visual and mechanical inspection and electrical test stated in NETA

Acceptance Testing Specification. Certify compliance with test parameters.

2. Correct malfunctioning units on-site, where possible, and retest to demonstrate

compliance; otherwise, replace with new units and retest.

C. Enclosed switches and circuit breakers will be considered defective if they do not pass tests and

inspections.

D. Prepare test and inspection reports, including a certified report that identifies enclosed switches

and circuit breakers and that describes scanning results. Include notation of deficiencies

detected, remedial action taken, and observations after remedial action.

3.5 ADJUSTING

A. Adjust moving parts and operable components to function smoothly, and lubricate as

recommended by manufacturer.
