ANN HARDY COMMUNITY CENTER RENOVATION 3300 1ST …...ANN HARDY COMMUNITY CENTER RENOVATION 3300 1ST AVENUE, RICHMOND, VA 23222 Architect’s Project No: 563116 COMMON MOTOR REQUIREMENTS

ANN HARDY COMMUNITY CENTER RENOVATION

3300 1ST AVENUE, RICHMOND, VA 23222

Architect’s Project No: 563116

COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT 230513 - 1

SECTION 230513 - COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

PART 1 - GENERAL

1.1 SUMMARY

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

horizontal, small and medium, squirrel-cage induction motors for use on alternating-current

power systems up to 600 V and installed at equipment manufacturer's factory or shipped

separately by equipment manufacturer for field installation.

1.2 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 (1000 m)

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.

2.3 POLYPHASE MOTORS

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

B. Efficiency: Premium 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. Code Letter Designation:

1. Motors Smaller Than 15 HP: Manufacturer's standard starting characteristic.

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

frame sizes smaller than 324T.

2.4 ADDITIONAL REQUIREMENTS FOR POLYPHASE MOTORS

A. Motors Used with Reduced-Voltage and Multispeed Controllers: Match wiring connection

requirements for controller with required motor leads. Provide terminals in motor terminal box,

suited to control method.

B. Motors Used with Variable-Frequency Controllers: Ratings, characteristics, and features

coordinated with and approved by controller manufacturer.

1. Windings: Copper magnet wire with moisture-resistant insulation varnish, designed and

tested to resist transient spikes, high frequencies, and short time rise pulses produced by

pulse-width-modulated inverters.

2. Premium-Efficient Motors: Class B temperature rise; Class F insulation.

3. Inverter-Duty Motors: Class F temperature rise; Class H insulation.

4. Thermal Protection: Comply with NEMA MG 1 requirements for thermally protected

motors.

2.5 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




IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT 230553 - 1

SECTION 230553 - IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Equipment labels.

2. Warning signs and labels.

3. Pipe labels.

4. Duct labels.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

PART 2 - PRODUCTS

2.1 EQUIPMENT LABELS

A. Metal Labels for Equipment:

1. <Double click here to find, evaluate, and insert list of manufacturers and products.>

2. Material and Thickness: aluminum, 0.032-inch (0.8-mm) or anodized aluminum, 0.032-

inch (0.8-mm) minimum thickness, and having predrilled or stamped holes for

attachment hardware.

3. Letter Color: Black.

4. Background Color: White.

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

2-1/2 by 3/4 inch (64 by 19 mm).

6. Minimum Letter Size: 1/4 inch (6.4 mm) for name of units if viewing distance is less than

24 inches (600 mm), 1/2 inch (13 mm) for viewing distances up to 72 inches (1830 mm),

and proportionately larger lettering for greater viewing distances. Include secondary

lettering two-thirds to three-quarters the size of principal lettering.

7. Fasteners: Stainless-steel rivets.

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

B. Plastic Labels for Equipment:

1.

2. Material and Thickness: Multilayer, multicolor, plastic labels for mechanical engraving,

1/16 inch (1.6 mm) thick, and having predrilled holes for attachment hardware.

3. Letter Color: Black.

http://www.specagent.com/LookUp/?ulid=9885&mf=04&src=wd





4. Background Color: White.

5. Maximum Temperature: Able to withstand temperatures up to 160 deg F (71 deg C).

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

2-1/2 by 3/4 inch (64 by 19 mm).

7. Minimum Letter Size: 1/4 inch (6.4 mm) for name of units if viewing distance is less than

24 inches (600 mm), 1/2 inch (13 mm) for viewing distances up to 72 inches (1830 mm),

and proportionately larger lettering for greater viewing distances. Include secondary

lettering two-thirds to three-quarters the size of principal lettering.

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

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

C. 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.

D. Equipment Label Schedule: For each item of equipment to be labeled, on 8-1/2-by-11-inch (A4)

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 (1.6 mm) thick, and having predrilled holes for attachment hardware.

B. Letter Color: Black.

C. Background Color: White.

D. Maximum Temperature: Able to withstand temperatures up to 160 deg F (71 deg C).

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

by 3/4 inch (64 by 19 mm).

F. Minimum Letter Size: 1/4 inch (6.4 mm) for name of units if viewing distance is less than 24

inches (600 mm), 1/2 inch (13 mm) for viewing distances up to 72 inches (1830 mm), 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.

2.4 DUCT LABELS

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

inch (1.6 mm) thick, and having predrilled holes for attachment hardware.

B. Letter Color: Black.

C. Background Color: White.

D. Maximum Temperature: Able to withstand temperatures up to 160 deg F (71 deg C).

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

by 3/4 inch (64 by 19 mm).

F. Minimum Letter Size: 1/4 inch (6.4 mm) for name of units if viewing distance is less than 24

inches (600 mm), 1/2 inch (13 mm) for viewing distances up to 72 inches (1830 mm), 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. Duct Label Contents: Include identification of duct service using same designations or

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

direction.

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

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





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 EQUIPMENT LABEL INSTALLATION

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

B. Locate equipment labels where accessible and visible.

3.3 PIPE LABEL INSTALLATION

A. Piping Color-Coding: Painting of piping is specified in Section 099123 "Interior Painting."

B. 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 50 feet (15 m) along each run. Reduce intervals to [25

feet (7.6 m)] in areas of congested piping and equipment.

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

C. Pipe Label Color Schedule:

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

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

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

4. Refrigerant Piping: Black letters on a safety-orange background.

5. Low-Pressure Steam Piping: White letters on a safety-purple background.

6. High-Pressure Steam Piping: White letters on a safety-purple background.

7. Steam Condensate Piping: White letters on a safety-purple background.





3.4 DUCT LABEL INSTALLATION

A. Install plastic-laminated duct labels with permanent adhesive on air ducts in the following color

codes:

1. Blue: For cold-air supply ducts.

2. Yellow: For hot-air supply ducts.

3. Green: For exhaust-, outside-, relief-, return-, and mixed-air ducts.

B. Locate labels near points where ducts enter into and exit from concealed spaces and at

maximum intervals of 50 feet (15 m) in each space where ducts are exposed or concealed by

removable ceiling system.





SECTION 230593 - TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 - GENERAL

1.1 SUMMARY


1. Balancing Air Systems:

a. Constant-volume air systems.

1.2 DEFINITIONS

A. AABC: Associated Air Balance Council.

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.

1.3 INFORMATIONAL SUBMITTALS

A. 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.

B. Certified TAB reports.

1.4 QUALITY ASSURANCE

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

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

NEBB.

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

TAB technician.

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

ASHRAE 111, Section 4, "Instrumentation."




C. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 7.2.2 - "Air

Balancing."

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

Section 6.7.2.3 - "System Balancing."

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.

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

wells, flow-control devices, balancing valves and fittings, and manual volume dampers. 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 fan.

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. To calculate system effects for air systems, use tables and charts found in

AMCA 201, "Fans and Systems," or in SMACNA's "HVAC Systems - Duct Design."

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, belts are aligned and tight,

filters are clean, and equipment with functioning controls is ready for operation.

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




J. 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 strategies and step-by-step procedures for balancing the

systems.

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

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

1. Airside:

a. Duct systems are complete with terminals installed.

b. Volume, smoke, and fire dampers are open and functional.

c. Fans are operating, free of vibration, and rotating in correct direction.

d. Ceilings are installed.

e. Windows and doors are installed.

f. 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 NEBB's "Procedural Standards for Testing, Adjusting, and Balancing of Environmental

Systems" and in this Section.

B. Cut insulation, ducts, 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. After testing and balancing, install test ports and duct access doors that comply with

requirements in Section 233300 "Air Duct Accessories."

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

coverings, vapor barrier, and finish according to Section 230713 "Duct Insulation,"

Section 230716 "HVAC Equipment Insulation," and 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 BALANCING AIR SYSTEMS

A. Prepare test reports for both fans and outlets. Obtain manufacturer's outlet factors and

recommended testing procedures. Cross-check the summation of required outlet volumes with

required fan volumes.

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

C. Determine the best locations in main and branch ducts for accurate duct-airflow measurements.

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

E. Check dampers for proper position to achieve desired airflow path.

F. Check for airflow blockages.

G. Verify that air duct system is sealed as specified in Section 233113 "Metal Ducts."

3.5 PROCEDURES FOR CONSTANT-VOLUME AIR SYSTEMS

A. Adjust fans to deliver total indicated airflows within the maximum allowable fan speed listed by

fan manufacturer.

1. Measure total airflow.

a. Set outside-air, return-air, and relief-air dampers for proper position that simulates

minimum outdoor-air conditions.

b. Where duct conditions allow, measure airflow by Pitot-tube traverse. If necessary,

perform multiple Pitot-tube traverses to obtain total airflow.

c. Where duct conditions are not suitable for Pitot-tube traverse measurements, a coil

traverse may be acceptable.

d. If a reliable Pitot-tube traverse or coil traverse is not possible, measure airflow at

terminals and calculate the total airflow.

2. Measure fan static pressures as follows:

a. Measure static pressure directly at the fan outlet or through the flexible connection.

b. Measure static pressure directly at the fan inlet or through the flexible connection.

c. Measure static pressure across each component that makes up the air-handling

system.

d. Report artificial loading of filters at the time static pressures are measured.

3. Review Record Documents to determine variations in design static pressures versus

actual static pressures. Calculate actual system-effect factors. Recommend adjustments to

accommodate actual conditions.

4. Obtain approval from commissioning authority for adjustment of fan speed higher or

lower than indicated speed. Comply with requirements in HVAC Sections for air-




handling units for adjustment of fans, belts, and pulley sizes to achieve indicated air-

handling-unit performance.

5. Do not make fan-speed adjustments that result in motor overload. Consult equipment

manufacturers about fan-speed safety factors. Modulate dampers and measure fan-motor

amperage to ensure that no overload occurs. Measure amperage in full-cooling, full-

heating, economizer, and any other operating mode to determine the maximum required

brake horsepower.

B. Adjust volume dampers for main duct, submain ducts, and major branch ducts to indicated

airflows.

1. Measure airflow of submain and branch ducts.

2. Adjust submain and branch duct volume dampers for specified airflow.

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

C. Adjust air inlets and outlets for each space to indicated airflows.

1. Set airflow patterns of adjustable outlets for proper distribution without drafts.

2. Measure inlets and outlets airflow.

3. Adjust each inlet and outlet for specified airflow.

4. Re-measure each inlet and outlet after they have been adjusted.

3.6 TOLERANCES

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

1. Supply, Return, and Exhaust Fans and Equipment with Fans: Plus or minus 10 percent.

2. Air Outlets and Inlets: Plus or minus 10 percent.

B. Maintaining pressure relationships as designed shall have priority over the tolerances specified

above.

3.7 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:

1. Fan 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.

15. Test conditions for fans and pump performance forms including the following:

a. Settings for outdoor-, return-, and exhaust-air dampers.

b. Conditions of filters.

c. Cooling coil, wet- and dry-bulb conditions.

d. Face and bypass damper settings at coils.

e. Fan drive settings including settings and percentage of maximum pitch diameter.

f. Inlet vane settings for variable-air-volume systems.

g. Settings for supply-air, static-pressure controller.

h. Other system operating conditions that affect performance.

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

each system with single-line diagram and include the following:

1. Quantities of outdoor, supply, return, and exhaust airflows.

2. Water and steam flow rates.

3. Duct, outlet, and inlet sizes.

4. Pipe and valve sizes and locations.

5. Terminal units.

6. Balancing stations.

7. Position of balancing devices.

E. Air-Handling-Unit Test Reports: For air-handling units with coils, include the following:

1. Unit Data:

a. Unit identification.




b. Location.

c. Make and type.

d. Model number and unit size.

e. Manufacturer's serial number.

f. Unit arrangement and class.

g. Discharge arrangement.

h. Sheave make, size in inches (mm), and bore.

i. Center-to-center dimensions of sheave and amount of adjustments in inches (mm).

j. Number, make, and size of belts.

k. Number, type, and size of filters.

2. Motor Data:

a. Motor make, and frame type and size.

b. Horsepower and rpm.

c. Volts, phase, and hertz.

d. Full-load amperage and service factor.

e. Sheave make, size in inches (mm), and bore.

f. Center-to-center dimensions of sheave and amount of adjustments in inches (mm).

3. Test Data (Indicated and Actual Values):

a. Total airflow rate in cfm (L/s).

b. Total system static pressure in inches wg (Pa).

c. Fan rpm.

d. Discharge static pressure in inches wg (Pa).

e. Filter static-pressure differential in inches wg (Pa).

f. Preheat-coil static-pressure differential in inches wg (Pa).

g. Cooling-coil static-pressure differential in inches wg (Pa).

h. Heating-coil static-pressure differential in inches wg (Pa).

F. Fan Test Reports: For supply, return, and exhaust fans, include the following:

1. Fan Data:

a. System identification.

b. Location.

c. Make and type.

d. Model number and size.

e. Manufacturer's serial number.

f. Arrangement and class.

g. Sheave make, size in inches (mm), and bore.

h. Center-to-center dimensions of sheave and amount of adjustments in inches (mm).

2. Motor Data:

a. Motor make, and frame type and size.

b. Horsepower and rpm.

c. Volts, phase, and hertz.

d. Full-load amperage and service factor.




e. Sheave make, size in inches (mm), and bore.

f. Center-to-center dimensions of sheave, and amount of adjustments in inches (mm).

g. Number, make, and size of belts.


a. Total airflow rate in cfm (L/s).

b. Total system static pressure in inches wg (Pa).

c. Fan rpm.

d. Discharge static pressure in inches wg (Pa).

e. Suction static pressure in inches wg (Pa).

G. Round, Flat-Oval, and Rectangular Duct Traverse Reports: Include a diagram with a grid

representing the duct cross-section and record the following:

1. Report Data:

a. System and air-handling-unit number.

b. Location and zone.

c. Traverse air temperature in deg F (deg C).

d. Duct static pressure in inches wg (Pa).

e. Duct size in inches (mm).

f. Duct area in sq. ft. (sq. m).

g. Indicated airflow rate in cfm (L/s).

h. Indicated velocity in fpm (m/s).

i. Actual airflow rate in cfm (L/s).

j. Actual average velocity in fpm (m/s).

k. Barometric pressure in psig (Pa).

H. Air-Terminal-Device Reports:

1. Unit Data:

a. System and air-handling unit identification.

b. Location and zone.

c. Apparatus used for test.

d. Area served.

e. Make.

f. Number from system diagram.

g. Type and model number.

h. Size.

i. Effective area in sq. ft. (sq. m).


a. Airflow rate in cfm (L/s).

b. Air velocity in fpm (m/s).

c. Preliminary airflow rate as needed in cfm (L/s).

d. Preliminary velocity as needed in fpm (m/s).

e. Final airflow rate in cfm (L/s).




f. Final velocity in fpm (m/s).

g. Space temperature in deg F (deg C).

I. Instrument Calibration Reports:

1. Report Data:

a. Instrument type and make.

b. Serial number.

c. Application.

d. Dates of use.

e. Dates of calibration.

3.8 VERIFICATION OF TAB REPORT

A. The TAB specialist's test and balance engineer shall conduct the inspection in the presence of

commissioning authority.

B. Commissioning authority shall randomly select measurements, documented in the final report,

to be rechecked. Rechecking shall be limited to either 10 percent of the total measurements

recorded or the extent of measurements that can be accomplished in a normal 8-hour business

day.

C. If rechecks yield measurements that differ from the measurements documented in the final

report by more than the tolerances allowed, the measurements shall be noted as "FAILED."

D. If the number of "FAILED" measurements is greater than 10 percent of the total measurements

checked during the final inspection, the testing and balancing shall be considered incomplete

and shall be rejected.

E. If TAB work fails, proceed as follows:

1. TAB specialists shall recheck all measurements and make adjustments. Revise the final

report and balancing device settings to include all changes; resubmit the final report and

request a second final inspection.

2. If the second final inspection also fails, Owner may contract the services of another TAB

specialist to complete TAB work according to the Contract Documents and deduct the

cost of the services from the original TAB specialist's final payment.

3. If the second verification also fails, design professional may contact AABC Headquarters

regarding the AABC National Performance Guaranty.

F. Prepare test and inspection reports.

3.9 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.





DUCT INSULATION 230713 - 1

SECTION 230713 - DUCT INSULATION

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 insulating the following duct services:

1. Indoor, concealed supply air.

2. Indoor, concealed exhaust.


A. Product Data: For each type of product indicated. Include thermal conductivity, water-vapor

permeance thickness, and jackets (both factory- and field-applied if any).


A. Qualification Data: For qualified Installer.

B. Material Test Reports: From a qualified testing agency acceptable to authorities having

jurisdiction indicating, interpreting, and certifying test results for compliance of insulation

materials, sealers, attachments, cements, and jackets, with requirements indicated. Include dates

of tests and test methods employed.

C. Field quality-control reports.


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 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.

1.6 DELIVERY, STORAGE, AND HANDLING

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

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

1.7 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 duct Installer for duct insulation application. Before

preparing ductwork Shop Drawings, establish and maintain clearance requirements for

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

maintenance.

1.8 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 "Duct Insulation Schedule, General," "Indoor Duct and Plenum

Insulation Schedule," and "Aboveground, Outdoor Duct and Plenum 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. 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 III with factory-applied FSK

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





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

1. For indoor applications, adhesive shall have a VOC content of 80 g/L or less when

calculated according to 40 CFR 59, Subpart D (EPA Method 24).

C. ASJ Adhesive, and FSK Jacket Adhesive: Comply with MIL-A-3316C, Class 2, Grade A for

bonding insulation jacket lap seams and joints.

1. For indoor applications, adhesive shall have a VOC content of 50 g/L or less when


2.3 MASTICS

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

MIL-PRF-19565C, Type II.

1. For indoor applications, use mastics that have a VOC content of 50 g/L or less when


B. Vapor-Barrier Mastic: Water based; suitable for indoor use on below ambient services.

1. Water-Vapor Permeance: ASTM E 96/E 96M, Procedure B, 0.013 perm (0.009 metric

perm) at 43-mil (1.09-mm) dry film thickness.

2. Service Temperature Range: Minus 20 to plus 180 deg F (Minus 29 to plus 82 deg C).

3. Solids Content: ASTM D 1644, 58 percent by volume and 70 percent by weight.

4. Color: White.

2.4 LAGGING ADHESIVES

A. Description: Comply with MIL-A-3316C, Class I, Grade A and shall be compatible with

insulation materials, jackets, and substrates.

1. For indoor applications, use lagging adhesives that have a VOC content of 50 g/L or less

when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

2. Service Temperature Range: 0 to plus 180 deg F (Minus 18 to plus 82 deg C).

3. Color: White.

2.5 SEALANTS

A. FSK and Metal Jacket Flashing Sealants:

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

2. Fire- and water-resistant, flexible, elastomeric sealant.

3. Service Temperature Range: Minus 40 to plus 250 deg F (Minus 40 to plus 121 deg C).





4. Color: Aluminum.

2.6 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. FSK Jacket: Aluminum-foil, fiberglass-reinforced scrim with kraft-paper backing;

complying with ASTM C 1136, Type II.

2.7 TAPES

A. FSK Tape: Foil-face, vapor-retarder tape matching factory-applied jacket with acrylic adhesive;

complying with ASTM C 1136.

1. Width: 3 inches (75 mm).

2. Thickness: 6.5 mils (0.16 mm).

3. Adhesion: 90 ounces force/inch (1.0 N/mm) in width.

4. Elongation: 2 percent.

5. Tensile Strength: 40 lbf/inch (7.2 N/mm) in width.

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

2.8 SECUREMENTS

A. Bands:

1. Stainless Steel: ASTM A 167 or ASTM A 240/A 240M, Type 304; 0.015 inch (0.38 mm)

thick, 1/2 inch (13 mm) wide with wing seal.

2. Springs: Twin spring set constructed of stainless steel with ends flat and slotted to accept

metal bands. Spring size determined by manufacturer for application.

B. Insulation Pins and Hangers:

1. Capacitor-Discharge-Weld Pins: Copper- or zinc-coated steel pin, fully annealed for

capacitor-discharge welding, 0.106-inch- (2.6-mm-) diameter shank, length to suit depth

of insulation indicated.

C. Staples: Outward-clinching insulation staples, nominal 3/4-inch- (19-mm-) wide, stainless steel

or Monel.

2.9 CORNER ANGLES

A. Stainless-Steel Corner Angles: 0.024 inch (0.61 mm) thick, minimum 1 by 1 inch (25 by 25

mm), stainless steel according to ASTM A 167 or ASTM A 240/A 240M,.





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.

B. 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.

3.3 GENERAL INSTALLATION REQUIREMENTS

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

free of voids throughout the length of ducts and fittings.

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

each item of duct system as specified in insulation system schedules.

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. Keep insulation materials dry during application and finishing.

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

adhesive recommended by insulation material manufacturer.

H. Install insulation with least number of joints practical.

I. 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.

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

and dry film thicknesses.

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

1. Draw jacket tight and smooth.

2. Cover circumferential joints with 3-inch- (75-mm-) wide strips, of same material as

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

edges of strip, spaced 4 inches (100 mm) o.c.

3. Overlap jacket longitudinal seams at least 1-1/2 inches (38 mm). Clean and dry surface to

receive self-sealing lap. Staple laps with outward clinching staples along edge at [2

inches (50 mm)] [4 inches (100 mm)] o.c.

a. For below ambient services, apply vapor-barrier mastic over staples.

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 duct flanges and fittings.

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

thickness.

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

due to thermal movement.

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

Extend patches at least 4 inches (100 mm) beyond damaged areas. Adhere, staple, and seal

patches similar to butt joints.

3.4 PENETRATIONS

A. Insulation Installation at Interior Wall and Partition Penetrations (That Are Not Fire Rated):

Install insulation continuously through walls and partitions.

B. Insulation Installation at Fire-Rated Wall and Partition Penetrations: Terminate insulation at fire

damper sleeves for fire-rated wall and partition penetrations. Externally insulate damper sleeves

to match adjacent insulation and overlap duct insulation at least 2 inches (50 mm).

1. Comply with requirements in Section 078413 "Penetration Firestopping"irestopping and

fire-resistive joint sealers.





3.5 INSTALLATION OF MINERAL-FIBER INSULATION

A. Blanket Insulation Installation on Ducts and Plenums: Secure with adhesive and insulation pins.

1. Apply adhesives according to manufacturer's recommended coverage rates per unit area,

for 100 percent coverage of duct and plenum surfaces.

2. Apply adhesive to entire circumference of ducts and to all surfaces of fittings and

transitions.

3. Install either capacitor-discharge-weld pins and speed washers or cupped-head, capacitor-

discharge-weld pins on sides and bottom of horizontal ducts and sides of vertical ducts as

follows:

a. On duct sides with dimensions 18 inches (450 mm) and smaller, place pins along

longitudinal centerline of duct. Space 3 inches (75 mm) maximum from insulation

end joints, and 16 inches (400 mm) o.c.

b. On duct sides with dimensions larger than 18 inches (450 mm), place pins 16

inches (400 mm) o.c. each way, and 3 inches (75 mm) maximum from insulation

joints. Install additional pins to hold insulation tightly against surface at cross

bracing.

c. Pins may be omitted from top surface of horizontal, rectangular ducts and plenums.

d. Do not overcompress insulation during installation.

e. Impale insulation over pins and attach speed washers.

f. Cut excess portion of pins extending beyond speed washers or bend parallel with

insulation surface. Cover exposed pins and washers with tape matching insulation

facing.

4. For ducts and plenums with surface temperatures below ambient, install a continuous

unbroken vapor barrier. Create a facing lap for longitudinal seams and end joints with

insulation by removing 2 inches (50 mm) from one edge and one end of insulation

segment. Secure laps to adjacent insulation section with 1/2-inch (13-mm) outward-

clinching staples, 1 inch (25 mm) o.c. Install vapor barrier consisting of factory- or field-

applied jacket, adhesive, vapor-barrier mastic, and sealant at joints, seams, and

protrusions.

a. Repair punctures, tears, and penetrations with tape or mastic to maintain vapor-

barrier seal.

b. Install vapor stops for ductwork and plenums operating below 50 deg F (10 deg C)

at 18-foot (5.5-m) intervals. Vapor stops shall consist of vapor-barrier mastic

applied in a Z-shaped pattern over insulation face, along butt end of insulation, and

over the surface. Cover insulation face and surface to be insulated a width equal to

two times the insulation thickness, but not less than 3 inches (75 mm).

5. Overlap unfaced blankets a minimum of 2 inches (50 mm) on longitudinal seams and end

joints. At end joints, secure with steel bands spaced a maximum of 18 inches (450 mm)

o.c.

6. Install insulation on rectangular duct elbows and transitions with a full insulation section

for each surface. Install insulation on round and flat-oval duct elbows with individually

mitered gores cut to fit the elbow.





7. Insulate duct stiffeners, hangers, and flanges that protrude beyond insulation surface with

6-inch- (150-mm-) wide strips of same material used to insulate duct. Secure on

alternating sides of stiffener, hanger, and flange with pins spaced 6 inches (150 mm) o.c.

3.6 FINISHES

A. Do not field paint aluminum or stainless-steel jackets.

3.7 FIELD QUALITY CONTROL

A. Testing Agency: Engage a qualified testing agency to perform tests and inspections.

B. Perform tests and inspections.

C. Tests and Inspections:

1. Inspect ductwork, randomly selected by Architect, by removing field-applied jacket and

insulation in layers in reverse order of their installation. Extent of inspection shall be

limited to one location(s) for each duct system defined in the "Duct Insulation Schedule,

General" Article.

D. All insulation applications will be considered defective Work if sample inspection reveals

noncompliance with requirements.

3.8 DUCT INSULATION SCHEDULE, SEE PLAN





FACILITY NATURAL-GAS PIPING 231123 - 1

SECTION 231123 - FACILITY NATURAL-GAS PIPING

PART 1 - GENERAL

1.1 SUMMARY


1. Pipes, tubes, and fittings. 2. Piping specialties. 3. Piping and tubing joining materials. 4. Valves. 5. Pressure regulators.

1.2 PERFORMANCE REQUIREMENTS

A. Natural-Gas System Pressures within Buildings: Two pressure ranges. Primary pressure is more than 0.5 psig (3.45 kPa) but not more than 2 psig (13.8 kPa), and is reduced to secondary pressure of 0.5 psig (3.45 kPa) or less.

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. Product Data: For each type of product indicated.

B. Shop Drawings: For facility natural-gas piping layout. Include plans, piping layout and elevations, sections, and details for fabrication of pipe anchors, hangers, supports for multiple pipes, alignment guides, expansion joints and loops, and attachments of the same to building structure. Detail location of anchors, alignment guides, and expansion joints and loops.

C. Delegated-Design Submittal: For natural-gas piping and equipment indicated to comply with performance requirements and design criteria, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation.

1. Detail fabrication and assembly of seismic restraints. 2. Design Calculations: Calculate requirements for selecting seismic restraints.


A. Welding certificates.

B. Field quality-control reports.





1.5 CLOSEOUT SUBMITTALS

A. Operation and maintenance data.


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 Pressure Vessel Code.

C. 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.

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. Protective Coating for Underground Piping: Factory-applied, three-layer coating of epoxy,

adhesive, and PE.

a. Joint Cover Kits: Epoxy paint, adhesive, and heat-shrink PE sleeves.

2.2 PIPING SPECIALTIES

A. Appliance Flexible Connectors:

1. Indoor, Fixed-Appliance Flexible Connectors: Comply with ANSI Z21.24. 2. Indoor, Movable-Appliance Flexible Connectors: Comply with ANSI Z21.69. 3. Outdoor, Appliance Flexible Connectors: Comply with ANSI Z21.75. 4. Corrugated stainless-steel tubing with polymer coating. 5. Operating-Pressure Rating: 0.5 psig (3.45 kPa). 6. End Fittings: Zinc-coated steel. 7. Threaded Ends: Comply with ASME B1.20.1. 8. Maximum Length: 72 inches (1830 mm.)

B. Quick-Disconnect Devices: Comply with ANSI Z21.41.

1. Copper-alloy convenience outlet and matching plug connector. 2. Nitrile seals. 3. Hand operated with automatic shutoff when disconnected. 4. For indoor or outdoor applications.





5. Adjustable, retractable restraining cable.

C. 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. 3. Strainer Screen: 40-mesh startup strainer, and perforated stainless-steel basket with 50

percent free area. 4. CWP Rating: 125 psig (862 kPa).

D. Weatherproof Vent Cap: Cast- or malleable-iron increaser fitting with corrosion-resistant wire screen, with free area at least equal to cross-sectional area of connecting pipe and threaded-end connection.

2.3 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.

C. Brazing Filler Metals: Alloy with melting point greater than 1000 deg F (540 deg C) complying with AWS A5.8/A5.8M. Brazing alloys containing more than 0.05 percent phosphorus are prohibited.

2.4 MANUAL GAS SHUTOFF VALVES

A. See "Underground Manual Gas Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles for where each valve type is applied in various services.

B. General Requirements for Metallic Valves, NPS 2 (DN 50) and Smaller: Comply with ASME B16.33.

1. CWP Rating: 125 psig (862 kPa). 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 (25 mm) and smaller.

6. Service Mark: Valves 1-1/4 inches (32 mm) to NPS 2 (DN 50) shall have initials "WOG" permanently marked on valve body.

C. Two-Piece, Full-Port, Bronze Ball Valves with Bronze Trim: MSS SP-110.

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to the following:

a. BrassCraft Manufacturing Co.; a Masco company. b. Conbraco Industries, Inc.

http://www.specagent.com/Lookup?ulid=3313

http://www.specagent.com/Lookup?uid=123456862522






c. Perfection Corporation.

2. Body: Bronze, complying with ASTM B 584.

3. Ball: Chrome-plated bronze. 4. Stem: Bronze; blowout proof. 5. Seats: Reinforced TFE; blowout proof. 6. Packing: Threaded-body packnut design with adjustable-stem packing. 7. Ends: Threaded, flared, or socket as indicated in "Underground Manual Gas Shutoff

Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. 8. CWP Rating: 600 psig (4140 kPa). 9. Listing: Valves NPS 1 (DN 25) and smaller shall be listed and labeled by an NRTL

acceptable to authorities having jurisdiction. 10. Service: Suitable for natural-gas service with "WOG" indicated on valve body.

D. Bronze Plug Valves: MSS SP-78.


a. A.Y. McDonald Mfg. Co. b. Lee Brass Company.

2. Body: Bronze, complying with ASTM B 584.

3. Plug: Bronze. 4. Ends: Threaded, socket, as indicated in "Underground Manual Gas Shutoff Valve

Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. 5. Operator: Square head or lug type with tamperproof feature where indicated. 6. Pressure Class: 125 psig (862 kPa). 7. Listing: Valves NPS 1 (DN 25) and smaller shall be listed and labeled by an NRTL

acceptable to authorities having jurisdiction. 8. Service: Suitable for natural-gas service with "WOG" indicated on valve body.

E. Valve Boxes:

1. Cast-iron, two-section box. 2. Top section with cover with "GAS" lettering. 3. Bottom section with base to fit over valve and barrel a minimum of 5 inches (125 mm) in

diameter. 4. Adjustable cast-iron extensions of length required for depth of bury. 5. Include tee-handle, steel operating wrench with socket end fitting valve nut or flat head,

and with stem of length required to operate valve.

2.5 MOTORIZED GAS VALVES

A. Electrically Operated Valves: Comply with UL 429.











a. Eclipse Innovative Thermal Technologies. b. Magnatrol Valve Corporation. c. Watts; a Watts Water Technologies company.

2. Pilot operated.

3. Body: Brass or aluminum. 4. Seats and Disc: Nitrile rubber. 5. Springs and Valve Trim: Stainless steel. 6. 120-V ac, 60 Hz, Class B, continuous-duty molded coil, and replaceable. 7. NEMA ICS 6, Type 4, coil enclosure. 8. Normally closed. 9. Visual position indicator.

2.6 PRESSURE REGULATORS

A. General Requirements:

1. Single stage and suitable for natural gas. 2. Steel jacket and corrosion-resistant components. 3. Elevation compensator. 4. End Connections: Threaded for regulators NPS 2 (DN 50) and smaller.

B. Line Pressure Regulators: Comply with ANSI Z21.80.

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Fisher Control Valves & Instruments; a brand of Emerson Process Management. b. Invensys. c. Maxitrol Company.

2. Body and Diaphragm Case: Cast iron or die-cast aluminum.

3. Springs: Zinc-plated steel; interchangeable. 4. Diaphragm Plate: Zinc-plated steel. 5. Seat Disc: Nitrile rubber resistant to gas impurities, abrasion, and deformation at the

valve port. 6. Orifice: Aluminum; interchangeable. 7. Seal Plug: Ultraviolet-stabilized, mineral-filled nylon. 8. Single-port, self-contained regulator with orifice no larger than required at maximum

pressure inlet, and no pressure sensing piping external to the regulator. 9. Pressure regulator shall maintain discharge pressure setting downstream, and not

exceed 150 percent of design discharge pressure at shutoff. 10. Overpressure Protection Device: Factory mounted on pressure regulator. 11. Atmospheric Vent: Factory- or field-installed, stainless-steel screen in opening if not

connected to vent piping. 12. Maximum Inlet Pressure: 2 psig (13.8 kPa).

C. Appliance Pressure Regulators: Comply with ANSI Z21.18.













a. Eaton. b. Harper Wyman Co. c. Maxitrol Company.

2. Body and Diaphragm Case: Die-cast aluminum.

3. Springs: Zinc-plated steel; interchangeable. 4. Diaphragm Plate: Zinc-plated steel. 5. Seat Disc: Nitrile rubber. 6. Seal Plug: Ultraviolet-stabilized, mineral-filled nylon. 7. Factory-Applied Finish: Minimum three-layer polyester and polyurethane paint finish. 8. Regulator may include vent limiting device, instead of vent connection, if approved by

authorities having jurisdiction. 9. Maximum Inlet Pressure: 1 psig (6.9 kPa).

2.7 DIELECTRIC UNIONS

A. Dielectric Unions:


a. Watts; a Watts Water Technologies company. b. Wilkins. c. Zurn Industries, LLC.

2. Description:

a. Standard: ASSE 1079. b. Pressure Rating: 125 psig (860 kPa) minimum at 180 deg F (82 deg C). c. End Connections: Solder-joint copper alloy and threaded ferrous.

2.8 LABELING AND IDENTIFYING

A. Detectable Warning Tape: Acid- and alkali-resistant, PE film warning tape manufactured for marking and identifying underground utilities, a minimum of 6 inches (150 mm) wide and 4 mils (0.1 mm) thick, continuously inscribed with a description of utility, with metallic core encased in a protective jacket for corrosion protection, detectable by metal detector when tape is buried up to 30 inches (750 mm) deep; colored yellow.

PART 3 - EXECUTION

3.1 OUTDOOR PIPING INSTALLATION

A. Comply with the International Fuel Gas Code for installation and purging of natural-gas piping.













B. Steel Piping with Protective Coating:

1. Apply joint cover kits to pipe after joining to cover, seal, and protect joints. 2. Repair damage to PE coating on pipe as recommended in writing by protective coating

manufacturer. 3. Replace pipe having damaged PE coating with new pipe.

C. Install fittings for changes in direction and branch connections.

D. Install pressure gage downstream from each service regulator. Pressure gages are specified in Section 230519 "Meters and Gages for HVAC Piping."

3.2 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.

C. Arrange for pipe spaces, chases, slots, sleeves, and openings in building structure during progress of construction, to allow for mechanical installations.

D. Install piping in concealed locations unless otherwise indicated and except in equipment rooms and service areas.

E. Install piping indicated to be exposed and piping in equipment rooms and service areas at right angles or parallel to building walls. Diagonal runs are prohibited unless specifically indicated otherwise.

F. Install piping above accessible ceilings to allow sufficient space for ceiling panel removal.

G. Locate valves for easy access.

H. Install natural-gas piping at uniform grade of 2 percent down toward drip and sediment traps.

I. Install piping free of sags and bends.

J. Install fittings for changes in direction and branch connections.

K. Verify final equipment locations for roughing-in.

L. Comply with requirements in Sections specifying gas-fired appliances and equipment for roughing-in requirements.

M. 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 (75 mm)





long and same size as connected pipe. Install with space below bottom of drip to remove plug or cap.

N. Extend relief vent connections for service regulators, line regulators, and overpressure protection devices to outdoors and terminate with weatherproof vent cap.

O. Conceal pipe installations in walls, pipe spaces, utility spaces, above ceilings, below grade or floors, and in floor channels unless indicated to be exposed to view.

P. Use eccentric reducer fittings to make reductions in pipe sizes. Install fittings with level side down.

Q. Connect branch piping from top or side of horizontal piping.

R. Install unions in pipes NPS 2 (DN 50) and smaller, adjacent to each valve, at final connection to each piece of equipment.

S. Do not use natural-gas piping as grounding electrode.

T. Install strainer on inlet of each line-pressure regulator and automatic or electrically operated valve.

U. Install pressure gage downstream from each line regulator. Pressure gages are specified in Section 230519 "Meters and Gages for HVAC Piping."

V. Install sleeves for piping penetrations of walls, ceilings, and floors. Comply with requirements for sleeves specified in Section 230517 "Sleeves and Sleeve Seals for HVAC Piping."

W. Install sleeve seals for piping penetrations of concrete walls and slabs. Comply with requirements for sleeve seals specified in Section 230517 "Sleeves and Sleeve Seals for HVAC Piping."

X. Install escutcheons for piping penetrations of walls, ceilings, and floors. Comply with requirements for escutcheons specified in Section 230518 "Escutcheons for HVAC Piping."

3.3 VALVE INSTALLATION

A. Install manual gas shutoff valve for each gas appliance ahead of corrugated stainless-steel tubing or copper connector.

B. Install underground valves with valve boxes.

C. Install regulators and overpressure protection devices with maintenance access space adequate for servicing and testing.

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.

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.

3.5 HANGER AND SUPPORT INSTALLATION

A. Install seismic restraints on piping. Comply with requirements for seismic-restraint devices specified in Section 230548 "Vibration and Seismic Controls for HVAC."

B. Comply with requirements for pipe hangers and supports specified in Section 230529 "Hangers and Supports for HVAC Piping and Equipment."

C. Install hangers for horizontal steel piping with the following maximum spacing and minimum rod sizes:

1. NPS 1 (DN 25) and Smaller: Maximum span, 96 inches (2438 mm); minimum rod size, 3/8 inch (10 mm).

2. NPS 1-1/4 (DN 32): Maximum span, 108 inches (2743 mm); minimum rod size, 3/8 inch (10 mm).

3. NPS 1-1/2 and NPS 2 (DN 40 and DN 50): Maximum span, 108 inches (2743 mm); minimum rod size, 3/8 inch (10 mm).

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 (1800 mm) 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.

B. Install detectable warning tape directly above gas piping, 12 inches (300 mm) below finished grade, except 6 inches (150 mm) below subgrade under pavements and slabs.


A. Test, inspect, and purge natural gas according to the International Fuel Gas Code and authorities having jurisdiction.

B. Natural-gas piping will be considered defective if it does not pass tests and inspections.

C. Prepare test and inspection reports.

3.9 OUTDOOR PIPING SCHEDULE

A. Aboveground natural-gas piping shall be one of the following:

1. Steel pipe with malleable-iron fittings and threaded joints. 2. Steel pipe with wrought-steel fittings and welded joints.

B. Containment Conduit: Steel pipe with wrought-steel fittings and welded joints. Coat pipe and fittings with protective coating for steel piping.

3.10 INDOOR PIPING SCHEDULE

A. Aboveground, distribution piping shall be the following:

1. Steel pipe with malleable-iron fittings and threaded joints.

B. Containment Conduit: Steel pipe with wrought-steel fittings and welded joints. Coat pipe and fittings with protective coating for steel piping.

3.11 ABOVEGROUND MANUAL GAS SHUTOFF VALVE SCHEDULE

A. Valves for pipe sizes NPS 2 (DN 50) and smaller at service meter shall be one of the following: 1. Two-piece, full-port, bronze ball valves with bronze trim. 2. Bronze plug valve.

B. Distribution piping valves for pipe sizes NPS 2 (DN 50) and smaller shall be one of the following: 1. Two-piece, full-port, bronze ball valves with bronze trim. 2. Bronze plug valve.

C. Valves in branch piping for single appliance shall be one of the following: 1. Two-piece, full-port, bronze ball valves with bronze trim. 2. Bronze plug valve.









METAL DUCTS 233113 - 1

SECTION 233113 - METAL DUCTS

PART 1 - GENERAL




1.2 SUMMARY


1. Single-wall rectangular ducts and fittings.

2. Single-wall round ducts and fittings.

3. Sheet metal materials.

4. Sealants and gaskets.

5. Hangers and supports.

B. Related Sections:

1. Section 233300 "Air Duct Accessories" for dampers, sound-control devices, duct-

mounting access doors and panels, turning vanes, and flexible ducts.


A. Product Data: For each type of the following products:

1. Sealants and gaskets.

B. Delegated-Design Submittal:

1. Sheet metal thicknesses.

2. Joint and seam construction and sealing.

3. Reinforcement details and spacing.

4. Materials, fabrication, assembly, and spacing of hangers and supports.


A. Welding certificates.

B. Field quality-control reports.


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 D1.2/D1.2M, "Structural Welding Code - Aluminum," for aluminum supports.

3. AWS D9.1M/D9.1, "Sheet Metal Welding Code," for duct joint and seam welding.

B. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 5 - "Systems and

Equipment" and Section 7 - "Construction and System Start-up."

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

Section 6.4.4 - "HVAC System Construction and Insulation."

PART 2 - PRODUCTS

2.1 SINGLE-WALL RECTANGULAR DUCTS AND FITTINGS

A. General Fabrication Requirements: Comply with SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible" based on indicated static-pressure class unless otherwise

indicated.

B. Transverse Joints: Select joint types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 2-1, "Rectangular Duct/Transverse

Joints," for static-pressure class, applicable sealing requirements, materials involved, duct-

support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible."

C. Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 2-2, "Rectangular Duct/Longitudinal

Seams," for static-pressure class, applicable sealing requirements, materials involved, duct-

support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible."

D. Elbows, Transitions, Offsets, Branch Connections, and Other Duct Construction: Select types

and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible," Chapter 4, "Fittings and Other Construction," for static-pressure class, applicable

sealing requirements, materials involved, duct-support intervals, and other provisions in

SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."

2.2 SINGLE-WALL ROUND DUCTS AND FITTINGS

A. General Fabrication Requirements: Comply with SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible," Chapter 3, "Round, Oval, and Flexible Duct," based on

indicated static-pressure class unless otherwise indicated.

B. Transverse Joints: Select joint types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 3-1, "Round Duct Transverse Joints," for

static-pressure class, applicable sealing requirements, materials involved, duct-support intervals,

and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible."





1. Transverse Joints in Ducts Larger Than 60 Inches (1524 mm) in Diameter: Flanged.

C. Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 3-2, "Round Duct Longitudinal Seams,"

for static-pressure class, applicable sealing requirements, materials involved, duct-support

intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible."

1. Fabricate round ducts larger than 90 inches (2286 mm) in diameter with butt-welded

longitudinal seams.

2. Fabricate flat-oval ducts larger than 72 inches (1830 mm) in width (major dimension)

with butt-welded longitudinal seams.

D. Tees and Laterals: Select types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 3-5, "90 Degree Tees and Laterals," and

Figure 3-6, "Conical Tees," for static-pressure class, applicable sealing requirements, materials

involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible."

2.3 SHEET METAL MATERIALS

A. General Material Requirements: Comply with SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible" for acceptable materials, material thicknesses, and duct

construction methods unless otherwise indicated. Sheet metal materials shall be free of pitting,

seam marks, roller marks, stains, discolorations, and other imperfections.

B. Galvanized Sheet Steel: Comply with ASTM A 653/A 653M.

1. Galvanized Coating Designation: G60 (Z180).

2. Finishes for Surfaces Exposed to View: Mill phosphatized.

C. Aluminum Sheets: Comply with ASTM B 209 (ASTM B 209M) Alloy 3003, H14 temper; with

mill finish for concealed ducts, and standard, one-side bright finish for duct surfaces exposed to

view.

D. Reinforcement Shapes and Plates: ASTM A 36/A 36M, steel plates, shapes, and bars; black and

galvanized.

1. Where black- and galvanized-steel shapes and plates are used to reinforce aluminum

ducts, isolate the different metals with butyl rubber, neoprene, or EPDM gasket materials.

E. Tie Rods: Galvanized steel, 1/4-inch (6-mm) minimum diameter for lengths 36 inches (900

mm) or less; 3/8-inch (10-mm) minimum diameter for lengths longer than 36 inches (900 mm).





2.4 SEALANT AND GASKETS

A. General Sealant and Gasket Requirements: Surface-burning characteristics for sealants and

gaskets shall be a maximum flame-spread index of 25 and a maximum smoke-developed index

of 50 when tested according to UL 723; certified by an NRTL.

B. Two-Part Tape Sealing System:

1. Tape: Woven cotton fiber impregnated with mineral gypsum and modified

acrylic/silicone activator to react exothermically with tape to form hard, durable, airtight

seal.

2. Tape Width: [3 inches (76 mm)] [4 inches (102 mm)] [6 inches (152 mm)].

3. Sealant: Modified styrene acrylic.

4. Water resistant.

5. Mold and mildew resistant.

6. Maximum Static-Pressure Class: 10-inch wg (2500 Pa), positive and negative.

7. Service: Indoor and outdoor.

8. Service Temperature: Minus 40 to plus 200 deg F (Minus 40 to plus 93 deg C).

9. Substrate: Compatible with galvanized sheet steel (both PVC coated and bare), stainless

steel, or aluminum.

10. For indoor applications, sealant shall have a VOC content of 250 g/L or less when


11. Sealant shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic

Emissions from Various Sources Using Small-Scale Environmental Chambers."

C. Water-Based Joint and Seam Sealant:

1. Application Method: Brush on.

2. Solids Content: Minimum 65 percent.

3. Shore A Hardness: Minimum 20.

4. Water resistant.

5. Mold and mildew resistant.

6. VOC: Maximum 75 g/L (less water).

7. Maximum Static-Pressure Class: 10-inch wg (2500 Pa), positive and negative.

8. Service: Indoor or outdoor.

9. Substrate: Compatible with galvanized sheet steel (both PVC coated and bare), stainless

steel, or aluminum sheets.

D. Flanged Joint Sealant: Comply with ASTM C 920.

1. General: Single-component, acid-curing, silicone, elastomeric.

2. Type: S.

3. Grade: NS.

4. Class: 25.

5. Use: O.

6. For indoor applications, sealant shall have a VOC content of 250 g/L or less when


E. Flange Gaskets: Butyl rubber, neoprene, or EPDM polymer with polyisobutylene plasticizer.





F. Round Duct Joint O-Ring Seals:

1. Seal shall provide maximum leakage class of3 cfm/100 sq. ft. at 1-inch wg (0.14 L/s per

sq. m at 250 Pa) and shall be rated for10-inch wg (2500-Pa) static-pressure class, positive

or negative.

2. EPDM O-ring to seal in concave bead in coupling or fitting spigot.

3. Double-lipped, EPDM O-ring seal, mechanically fastened to factory-fabricated couplings

and fitting spigots.

2.5 HANGERS AND SUPPORTS

A. Hanger Rods for Noncorrosive Environments: Cadmium-plated steel rods and nuts.

B. Hanger Rods for Corrosive Environments: Electrogalvanized, all-thread rods or galvanized rods

with threads painted with zinc-chromate primer after installation.

C. Strap and Rod Sizes: Comply with SMACNA's "HVAC Duct Construction Standards - Metal

and Flexible," Table 5-1 (Table 5-1M), "Rectangular Duct Hangers Minimum Size," and

Table 5-2, "Minimum Hanger Sizes for Round Duct."

D. Steel Cables for Galvanized-Steel Ducts: Galvanized steel complying with ASTM A 603.

E. Steel Cable End Connections: Cadmium-plated steel assemblies with brackets, swivel, and bolts

designed for duct hanger service; with an automatic-locking and clamping device.

F. Duct Attachments: Sheet metal screws, blind rivets, or self-tapping metal screws; compatible

with duct materials.

G. Trapeze and Riser Supports:

1. Supports for Galvanized-Steel Ducts: Galvanized-steel shapes and plates.

2. Supports for Stainless-Steel Ducts: Stainless-steel shapes and plates.

3. Supports for Aluminum Ducts: Aluminum or galvanized steel coated with zinc chromate.

PART 3 - EXECUTION

3.1 DUCT INSTALLATION

A. Drawing plans, schematics, and diagrams indicate general location and arrangement of duct

system. Indicated duct locations, configurations, and arrangements were used to size ducts and

calculate friction loss for air-handling equipment sizing and for other design considerations.

Install duct systems as indicated unless deviations to layout are approved on Shop Drawings and

Coordination Drawings.

B. Install ducts according to SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible" unless otherwise indicated.





C. Install round and flat-oval ducts in maximum practical lengths.

D. Install ducts with fewest possible joints.

E. Install factory- or shop-fabricated fittings for changes in direction, size, and shape and for

branch connections.

F. Unless otherwise indicated, install ducts vertically and horizontally, and parallel and

perpendicular to building lines.

G. Install ducts close to walls, overhead construction, columns, and other structural and permanent

enclosure elements of building.

H. Install ducts with a clearance of 1 inch (25 mm), plus allowance for insulation thickness.

I. Route ducts to avoid passing through transformer vaults and electrical equipment rooms and

enclosures.

J. Where ducts pass through non-fire-rated interior partitions and exterior walls and are exposed to

view, cover the opening between the partition and duct or duct insulation with sheet metal

flanges of same metal thickness as the duct. Overlap openings on four sides by at least 1-1/2

inches (38 mm).

K. Where ducts pass through fire-rated interior partitions and exterior walls, install fire dampers.

Comply with requirements in Section 233300 "Air Duct Accessories" for fire and smoke

dampers.

L. Protect duct interiors from moisture, construction debris and dust, and other foreign

materials. Comply with SMACNA's "IAQ Guidelines for Occupied Buildings Under

Construction," Appendix G, "Duct Cleanliness for New Construction Guidelines."

3.2 DUCT SEALING

A. Seal ducts for duct static-pressure, seal classes, and leakage classes specified in "Duct

Schedule" Article according to SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible."

B. Seal ducts to the following seal classes according to SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible":

1. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."

2. Conditioned Space, Supply-Air Ducts in Pressure Classes 2-Inch wg (500 Pa) and Lower:

Seal Class C.

3. Conditioned Space, Exhaust Ducts: Seal Class B.

4. Conditioned Space, Return-Air Ducts: Seal Class C.





3.3 HANGER AND SUPPORT INSTALLATION

A. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible,"

Chapter 5, "Hangers and Supports."

B. Building Attachments: Concrete inserts, powder-actuated fasteners, or structural-steel fasteners

appropriate for construction materials to which hangers are being attached.

1. Where practical, install concrete inserts before placing concrete.

2. Install powder-actuated concrete fasteners after concrete is placed and completely cured.

3. Use powder-actuated concrete fasteners for standard-weight aggregate concretes or for

slabs more than 4 inches (100 mm) thick.

4. Do not use powder-actuated concrete fasteners for lightweight-aggregate concretes or for

slabs less than 4 inches (100 mm) thick.

5. Do not use powder-actuated concrete fasteners for seismic restraints.

C. Hanger Spacing: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible," Table 5-1 (Table 5-1M), "Rectangular Duct Hangers Minimum Size," and Table 5-2,

"Minimum Hanger Sizes for Round Duct," for maximum hanger spacing; install hangers and

supports within 24 inches (610 mm) of each elbow and within 48 inches (1200 mm) of each

branch intersection.

D. Hangers Exposed to View: Threaded rod and angle or channel supports.

E. Support vertical ducts with steel angles or channel secured to the sides of the duct with welds,

bolts, sheet metal screws, or blind rivets; support at each floor and at a maximum intervals of 16

feet (5 m).

F. Install upper attachments to structures. Select and size upper attachments with pull-out, tension,

and shear capacities appropriate for supported loads and building materials where used.

3.4 CONNECTIONS

A. Make connections to equipment with flexible connectors complying with Section 233300 "Air

Duct Accessories."

B. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for

branch, outlet and inlet, and terminal unit connections.

3.5 PAINTING

A. Paint interior of metal ducts that are visible through registers and grilles and that do not have

duct liner. Apply one coat of flat, black, latex paint over a compatible galvanized-steel primer.

Paint materials and application requirements are specified in Section 099113 "Exterior Painting"

and Section 099123 "Interior Painting."






A. Perform tests and inspections.

B. Leakage Tests:

1. Comply with SMACNA's "HVAC Air Duct Leakage Test Manual." Submit a test report

for each test.

2. Test the following systems:

a. Ducts with a Pressure Class Higher Than 3-Inch wg (750 Pa): Test representative

duct sections, selected by Architect from sections installed, totaling no less than 25

percent of total installed duct area for each designated pressure class.

3. Disassemble, reassemble, and seal segments of systems to accommodate leakage testing

and for compliance with test requirements.

4. Test for leaks before applying external insulation.

5. Conduct tests at static pressures equal to maximum design pressure of system or section

being tested. If static-pressure classes are not indicated, test system at maximum system

design pressure. Do not pressurize systems above maximum design operating pressure.

6. Give seven days' advance notice for testing.

C. Duct System Cleanliness Tests:

1. Visually inspect duct system to ensure that no visible contaminants are present.

2. Test sections of metal duct system, chosen randomly by Owner, for cleanliness according

to "Vacuum Test" in NADCA ACR, "Assessment, Cleaning and Restoration of HVAC

Systems."

a. Acceptable Cleanliness Level: Net weight of debris collected on the filter media

shall not exceed 0.75 mg/100 sq. cm.

D. Duct system will be considered defective if it does not pass tests and inspections.

E. Prepare test and inspection reports.

3.7 DUCT CLEANING

A. Clean new and existing duct system(s).

B. Use service openings for entry and inspection.

1. Create new openings and install access panels appropriate for duct static-pressure class if

required for cleaning access. Provide insulated panels for insulated or lined duct. Patch

insulation and liner as recommended by duct liner manufacturer. Comply with

Section 233300 "Air Duct Accessories" for access panels and doors.

2. Disconnect and reconnect flexible ducts as needed for cleaning and inspection.

3. Remove and reinstall ceiling to gain access during the cleaning process.





C. Particulate Collection and Odor Control:

1. When venting vacuuming system inside the building, use HEPA filtration with 99.97

percent collection efficiency for 0.3-micron-size (or larger) particles.

2. When venting vacuuming system to outdoors, use filter to collect debris removed from

HVAC system, and locate exhaust downwind and away from air intakes and other points

of entry into building.

D. Clean the following components by removing surface contaminants and deposits:

1. Air outlets and inlets (registers, grilles, and diffusers).

2. Supply, return, and exhaust fans including fan housings, plenums (except ceiling supply

and return plenums), scrolls, blades or vanes, shafts, baffles, dampers, and drive

assemblies.

3. Air-handling unit internal surfaces and components including mixing box, coil section,

air wash systems, spray eliminators, condensate drain pans, humidifiers and

dehumidifiers, filters and filter sections, and condensate collectors and drains.

4. Coils and related components.

5. Return-air ducts, dampers, actuators, and turning vanes except in ceiling plenums and

mechanical equipment rooms.

6. Supply-air ducts, dampers, actuators, and turning vanes.

7. Dedicated exhaust and ventilation components and makeup air systems.

E. Mechanical Cleaning Methodology:

1. Clean metal duct systems using mechanical cleaning methods that extract contaminants

from within duct systems and remove contaminants from building.

2. Use vacuum-collection devices that are operated continuously during cleaning. Connect

vacuum device to downstream end of duct sections so areas being cleaned are under

negative pressure.

3. Use mechanical agitation to dislodge debris adhered to interior duct surfaces without

damaging integrity of metal ducts, duct liner, or duct accessories.

4. Clean fibrous-glass duct liner with HEPA vacuuming equipment; do not permit duct liner

to get wet. Replace fibrous-glass duct liner that is damaged, deteriorated, or delaminated

or that has friable material, mold, or fungus growth.

5. Clean coils and coil drain pans according to NADCA 1992. Keep drain pan operational.

Rinse coils with clean water to remove latent residues and cleaning materials; comb and

straighten fins.

6. Provide drainage and cleanup for wash-down procedures.

7. Antimicrobial Agents and Coatings: Apply EPA-registered antimicrobial agents if fungus

is present. Apply antimicrobial agents according to manufacturer's written instructions

after removal of surface deposits and debris.

3.8 START UP

A. Air Balance: Comply with requirements in Section 230593 "Testing, Adjusting, and Balancing

for HVAC."





3.9 DUCT SCHEDULE

A. Fabricate ducts with galvanized sheet steel except as otherwise indicated and as follows:

B. Supply Ducts:

1. Ducts Connected to DIFFUSERS – AHU:

a. Pressure Class: Positive 2-inch wg (500 Pa).

b. Minimum SMACNA Seal Class: B.

c. SMACNA Leakage Class for Rectangular: 12.

d. SMACNA Leakage Class for Round and Flat Oval: 12.

C. Return Ducts:

1. Ducts Connected to AHU:

a. Pressure Class: Positive or negative 1-inch wg (250 Pa).

b. Minimum SMACNA Seal Class: B.



D. Exhaust Ducts:

1. Ducts Connected to Fans Exhausting (ASHRAE 62.1, Class 1 and 2) Air:

a. Pressure Class: Negative 2-inch wg (500 Pa).

b. Minimum SMACNA Seal Class: B if negative pressure, and A if positive

pressure.



E. Intermediate Reinforcement:

1. Galvanized-Steel Ducts: Galvanized steel.

2. Aluminum Ducts: Aluminum.

F. Elbow Configuration:

1. Rectangular Duct: Comply with SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible," Figure 4-2, "Rectangular Elbows."

a. Radius Type RE 1 with minimum 1.5 radius-to-diameter ratio.

b. Radius Type RE 3 with minimum 1.0 radius-to-diameter ratio and two vanes.

c. Mitered Type RE 2 with vanes complying with SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 4-3, "Vanes and Vane

Runners," and Figure 4-4, "Vane Support in Elbows."





2. Round Duct: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible," Figure 3-4, "Round Duct Elbows."

a. Round Elbows, 12 Inches (305 mm) and Smaller in Diameter: Stamped or pleated.

b. Round Elbows, 14 Inches (356 mm) and Larger in Diameter: .

G. Branch Configuration:

1. Rectangular Duct: Comply with SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible," Figure 4-6, "Branch Connection."

a. Rectangular Main to Rectangular Branch: 45-degree entry.

b. Rectangular Main to Round Branch: Spin in.

2. Round and Flat Oval: Comply with SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible," Figure 3-5, "90 Degree Tees and Laterals," and Figure 3-6, "Conical

Tees." Saddle taps are permitted in existing duct.

a. Velocity 1000 fpm (5 m/s) or Lower: 90-degree tap.

b. Velocity 1000 to 1500 fpm (5 to 7.6 m/s): Conical tap.

c. Velocity 1500 fpm (7.6 m/s) or Higher: 45-degree lateral.





AIR DUCT ACCESSORIES 233300 - 1

SECTION 233300 - AIR DUCT ACCESSORIES

PART 1 - GENERAL

1.1 SUMMARY


1. Backdraft and pressure relief dampers.

2. Manual volume dampers.

3. Flange connectors.

4. Turning vanes.

5. Duct-mounted access doors.

6. Flexible connectors.

7. Flexible ducts.

8. Duct accessory hardware.

B. Related Requirements:

1. Section 233723 "HVAC Gravity Ventilators" for roof-mounted ventilator caps.

2. Section 283111 "Digital, Addressable Fire-Alarm System" for duct-mounted fire and

smoke detectors.





PART 2 - PRODUCTS

2.1 ASSEMBLY DESCRIPTION

A. Comply with NFPA 90A, "Installation of Air Conditioning and Ventilating Systems," and with

NFPA 90B, "Installation of Warm Air Heating and Air Conditioning Systems."

B. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for

acceptable materials, material thicknesses, and duct construction methods unless otherwise

indicated. Sheet metal materials shall be free of pitting, seam marks, roller marks, stains,

discolorations, and other imperfections.





2.2 MATERIALS

A. Galvanized Sheet Steel: Comply with ASTM A 653/A 653M.

1. Galvanized Coating Designation: G60 (Z180).

2. Exposed-Surface Finish: Mill phosphatized.

B. Aluminum Sheets: Comply with ASTM B 209 (ASTM B 209M), Alloy 3003, Temper H14;

with mill finish for concealed ducts and standard, 1-side bright finish for exposed ducts.

C. Extruded Aluminum: Comply with ASTM B 221 (ASTM B 221M), Alloy 6063, Temper T6.

D. Reinforcement Shapes and Plates: Galvanized-steel reinforcement where installed on

galvanized sheet metal ducts; compatible materials for aluminum and stainless-steel ducts.

E. Tie Rods: Galvanized steel, 1/4-inch (6-mm) minimum diameter for lengths 36 inches (900

mm) or less; 3/8-inch (10-mm) minimum diameter for lengths longer than 36 inches (900 mm).

2.3 BACKDRAFT AND PRESSURE RELIEF DAMPERS

A. Description: Gravity balanced.

B. Maximum Air Velocity: 2000 fpm (10 m/s).

C. Maximum System Pressure: 2-inch wg (0.5 kPa).

D. Frame: Hat-shaped, 0.094-inch- (2.4-mm-) thick, galvanized sheet steel, with welded corners or

mechanically attached and mounting flange.

E. Blades: Multiple single-piece blades, end pivoted, maximum 6-inch (150-mm) width, 0.050-

inch- (1.2-mm-) thick aluminum sheet with sealed edges.

F. Blade Action: Parallel.

G. Blade Seals: Neoprene, mechanically locked.

H. Blade Axles:

1. Material: Nonferrous metal.

2. Diameter: 0.20 inch (5 mm).

I. Tie Bars and Brackets: Galvanized steel.

J. Return Spring: Adjustable tension.

K. Bearings: Steel ball or synthetic pivot bushings.

L. Accessories:

1. Adjustment device to permit setting for varying differential static pressure.





2. Counterweights and spring-assist kits for vertical airflow installations.

3. Electric actuators.

4. Chain pulls.

5. Screen Mounting: Front mounted in sleeve.

a. Sleeve Thickness: 20 gage (1.0 mm) minimum.

b. Sleeve Length: 6 inches (152 mm) minimum.

6. Screen Mounting: Rear mounted.

7. Screen Material: Aluminum.

8. Screen Type: Insect.

9. 90-degree stops.

2.4 MANUAL VOLUME DAMPERS

A. Standard, Steel, Manual Volume Dampers:

1. Standard leakage rating, with linkage outside airstream.

2. Suitable for horizontal or vertical applications.

3. Frames:

a. Frame: Hat-shaped, 0.094-inch- (2.4-mm-) thick, galvanized sheet steel.

b. Mitered and welded corners.

c. Flanges for attaching to walls and flangeless frames for installing in ducts.

4. Blades:

a. Multiple or single blade.

b. Parallel- or opposed-blade design.

c. Stiffen damper blades for stability.

d. Galvanized-steel, 0.064 inch (1.62 mm) thick.

5. Blade Axles: Galvanized steel.

6. Bearings:

a. Oil-impregnated stainless-steel sleeve.

b. Dampers in ducts with pressure classes of 3-inch wg (750 Pa) or less shall have

axles full length of damper blades and bearings at both ends of operating shaft.

7. Tie Bars and Brackets: Galvanized steel.

B. Standard, Aluminum, Manual Volume Dampers:

1. Standard leakage rating, with linkage outside airstream.

2. Suitable for horizontal or vertical applications.

3. Frames: Hat-shaped, 0.10-inch- (2.5-mm-) thick, aluminum sheet channels; frames with

flanges for attaching to walls and flangeless frames for installing in ducts.

4. Blades:

a. Multiple or single blade.

b. Parallel- or opposed-blade design.





c. Stiffen damper blades for stability.

d. Extruded-Aluminum Blades: 0.050-inch- (1.2-mm-) thick extruded aluminum.

5. Blade Axles: Galvanized steel.

6. Bearings:

a. Stainless-steel sleeve.

b. Dampers in ducts with pressure classes of 3-inch wg (750 Pa) or less shall have

axles full length of damper blades and bearings at both ends of operating shaft.

7. Tie Bars and Brackets: Aluminum.

C. Jackshaft:

1. Size: 0.5-inch (13-mm) diameter.

2. Material: Galvanized-steel pipe rotating within pipe-bearing assembly mounted on

supports at each mullion and at each end of multiple-damper assemblies.

3. Length and Number of Mountings: As required to connect linkage of each damper in

multiple-damper assembly.

D. Damper Hardware:

1. Zinc-plated, die-cast core with dial and handle made of 3/32-inch- (2.4-mm-) thick zinc-

plated steel, and a 3/4-inch (19-mm) hexagon locking nut.

2. Include center hole to suit damper operating-rod size.

3. Include elevated platform for insulated duct mounting.

2.5 FLANGE CONNECTORS

A. Description: Add-on or roll-formed, factory-fabricated, slide-on transverse flange connectors,

gaskets, and components.

B. Material: Galvanized steel.

C. Gage and Shape: Match connecting ductwork.

2.6 TURNING VANES

A. Manufactured Turning Vanes for Metal Ducts: Curved blades of galvanized sheet steel; support

with bars perpendicular to blades set; set into vane runners suitable for duct mounting.

1. Acoustic Turning Vanes: Fabricate airfoil-shaped aluminum extrusions with perforated

faces and fibrous-glass fill.

B. General Requirements: Comply with SMACNA's "HVAC Duct Construction Standards - Metal

and Flexible"; Figures 4-3, "Vanes and Vane Runners," and 4-4, "Vane Support in Elbows."

C. Vane Construction: Single or Double wall.





2.7 DUCT-MOUNTED ACCESS DOORS

A. Duct-Mounted Access Doors: Fabricate access panels according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible"; Figures 7-2 (7-2M), "Duct Access Doors and

Panels," and 7-3, "Access Doors - Round Duct."

1. Door:

a. Double wall, rectangular.

b. Galvanized sheet metal with insulation fill and thickness as indicated for duct

pressure class.

c. Vision panel.

d. Hinges and Latches: 1-by-1-inch (25-by-25-mm)butt or piano hinge and cam

latches.

e. Fabricate doors airtight and suitable for duct pressure class.

2. Frame: Galvanized sheet steel, with bend-over tabs and foam gaskets.

3. Number of Hinges and Locks:

a. Access Doors Less Than 12 Inches (300 mm) Square: No hinges and two sash

locks.

b. Access Doors up to 18 Inches (460 mm) Square: Two hinges and two sash locks.

c. Access Doors up to 24 by 48 Inches (600 by 1200 mm): Three hinges and two

compression latches with outside and inside handles.

d. Access Doors Larger Than 24 by 48 Inches (600 by 1200 mm): Four hinges and

two compression latches with outside and inside handles.

2.8 DUCT ACCESS PANEL ASSEMBLIES

A. Labeled according to UL 1978 by an NRTL.

B. Panel and Frame: Minimum thickness 0.0528-inch (1.3-mm) carbon steel.

C. Fasteners: Stainless steel. Panel fasteners shall not penetrate duct wall.

D. Gasket: Comply with NFPA 96; grease-tight, high-temperature ceramic fiber, rated for

minimum 2000 deg F (1093 deg C).

E. Minimum Pressure Rating: 10-inch wg (2500 Pa), positive or negative.

2.9 FLEXIBLE CONNECTORS

A. Materials: Flame-retardant or noncombustible fabrics.

B. Coatings and Adhesives: Comply with UL 181, Class 1.

C. Metal-Edged Connectors: Factory fabricated with a fabric strip 3-1/2 inches (89 mm) wide

attached to two strips of 2-3/4-inch- (70-mm-) wide, 0.028-inch- (0.7-mm-) thick, galvanized





sheet steel or 0.032-inch- (0.8-mm-) thick aluminum sheets. Provide metal compatible with

connected ducts.

D. Indoor System, Flexible Connector Fabric: Glass fabric double coated with neoprene.

1. Minimum Weight: 26 oz./sq. yd. (880 g/sq. m).

2. Tensile Strength: 480 lbf/inch (84 N/mm) in the warp and 360 lbf/inch (63 N/mm) in the

filling.

3. Service Temperature: Minus 40 to plus 200 deg F (Minus 40 to plus 93 deg C).

2.10 FLEXIBLE DUCTS

A. Noninsulated, Flexible Duct: UL 181, Class 1, 2-ply vinyl film supported by helically wound,

spring-steel wire.

1. Pressure Rating: 10-inch wg (2500 Pa) positive and 1.0-inch wg (250 Pa) negative.

2. Maximum Air Velocity: 4000 fpm (20 m/s).

3. Temperature Range: Minus 10 to plus 160 deg F (Minus 23 to plus 71 deg C).

B. Insulated, Flexible Duct: UL 181, Class 1, aluminum laminate and polyester film with latex

adhesive supported by helically wound, spring-steel wire; fibrous-glass insulation; aluminized

vapor-barrier film.

1. Pressure Rating: 10-inch wg (2500 Pa) positive and 1.0-inch wg (250 Pa) negative.

2. Maximum Air Velocity: 4000 fpm (20 m/s).

3. Temperature Range: Minus 20 to plus 210 deg F (Minus 29 to plus 99 deg C).

4. Insulation R-value: Comply with ASHRAE/IESNA 90.1.

C. Flexible Duct Connectors:

1. Clamps: Stainless-steel band with cadmium-plated hex screw to tighten band with a

worm-gear action in sizes 3 through 18 inches (75 through 460 mm), to suit duct size.

2. Non-Clamp Connectors: Adhesive plus sheet metal screws.

2.11 DUCT ACCESSORY HARDWARE

A. Instrument Test Holes: Cast iron or cast aluminum to suit duct material, including screw cap

and gasket. Size to allow insertion of pitot tube and other testing instruments and of length to

suit duct-insulation thickness.

B. Adhesives: High strength, quick setting, neoprene based, waterproof, and resistant to gasoline

and grease.





PART 3 - EXECUTION

3.1 INSTALLATION

A. Install duct accessories according to applicable details in SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible" for metal ducts and in NAIMA AH116, "Fibrous

Glass Duct Construction Standards," for fibrous-glass ducts.

B. Install duct accessories of materials suited to duct materials; use galvanized-steel accessories in

galvanized-steel and fibrous-glass ducts, stainless-steel accessories in stainless-steel ducts, and

aluminum accessories in aluminum ducts.

C. Install backdraft dampers at inlet of exhaust fans or exhaust ducts as close as possible to exhaust

fan unless otherwise indicated.

D. Install volume dampers at points on supply, return, and exhaust systems where branches extend

from larger ducts. Where dampers are installed in ducts having duct liner, install dampers with

hat channels of same depth as liner, and terminate liner with nosing at hat channel.

1. Install steel volume dampers in steel ducts.

2. Install aluminum volume dampers in aluminum ducts.

E. Set dampers to fully open position before testing, adjusting, and balancing.

F. Install test holes at fan inlets and outlets and elsewhere as indicated.

G. Install fire and smoke dampers according to UL listing.

H. Install duct access doors on sides of ducts to allow for inspecting, adjusting, and maintaining

accessories and equipment at the following locations:

1. On both sides of duct coils.

2. Upstream from duct filters.

3. At outdoor-air intakes and mixed-air plenums.

4. At drain pans and seals.

5. Downstream from manual volume dampers, control dampers, backdraft dampers, and

equipment.

6. Adjacent to and close enough to fire or smoke dampers, to reset or reinstall fusible links.

Access doors for access to fire or smoke dampers having fusible links shall be pressure

relief access doors and shall be outward operation for access doors installed upstream

from dampers and inward operation for access doors installed downstream from dampers.

7. At each change in direction and at maximum 50-foot (15-m) spacing.

8. Upstream from turning vanes.

9. Upstream or downstream from duct silencers.

10. Control devices requiring inspection.

11. Elsewhere as indicated.

I. Install access doors with swing against duct static pressure.





J. Access Door Sizes:

1. One-Hand or Inspection Access: 8 by 5 inches (200 by 125 mm).

2. Two-Hand Access: 12 by 6 inches (300 by 150 mm).

3. Head and Hand Access: 18 by 10 inches (460 by 250 mm).

4. Head and Shoulders Access: 21 by 14 inches (530 by 355 mm).

5. Body Access: 25 by 14 inches (635 by 355 mm).

6. Body plus Ladder Access: 25 by 17 inches (635 by 430 mm).

K. Label access doors according to Section 230553 "Identification for HVAC Piping and

Equipment" to indicate the purpose of access door.

L. Install flexible connectors to connect ducts to equipment.

M. Connect terminal units to supply ducts with maximum 12-inch (300-mm) lengths of flexible

duct. Do not use flexible ducts to change directions.

N. Connect diffusers or light troffer boots to ducts with maximum 60-inch (1500-mm) lengths of

flexible duct clamped or strapped in place.

O. Connect flexible ducts to metal ducts with adhesive plus sheet metal screws.

P. Install duct test holes where required for testing and balancing purposes.


A. Tests and Inspections:

1. Operate dampers to verify full range of movement.

2. Inspect locations of access doors and verify that purpose of access door can be

performed.

3. Operate fire and smoke dampers to verify full range of movement and verify that proper

heat-response device is installed.

4. Inspect turning vanes for proper and secure installation.





HVAC POWER VENTILATORS 233423 - 1

SECTION 233423 - HVAC POWER VENTILATORS

PART 1 - GENERAL




1.2 SUMMARY


1. Ceiling-mounted ventilators.


A. Project Altitude: Base fan-performance ratings on actual Project site elevations.

B. Operating Limits: Classify according to AMCA 99.


A. Product Data: For each type of product indicated. Include rated capacities, operating

characteristics, and furnished specialties and accessories. Also include the following:

1. Certified fan performance curves with system operating conditions indicated.

2. Certified fan sound-power ratings.

3. Motor ratings and electrical characteristics, plus motor and electrical accessories.

4. Material thickness and finishes, including color charts.

5. Dampers, including housings, linkages, and operators.

6. Roof curbs.

7. Fan speed controllers.

B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work.

1. Detail equipment assemblies and indicate dimensions, weights, loads, required

clearances, method of field assembly, components, and location and size of each field

connection.

2. Wiring Diagrams: For power, signal, and control wiring.


A. Field quality-control reports.






A. Operation and Maintenance Data: For power ventilators to include in emergency, operation, and

maintenance manuals.

1.7 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials that match products installed and that are packaged with protective

covering for storage and identified with labels describing contents.

1. Belts: One set(s) for each belt-driven unit.


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.

B. AMCA Compliance: Fans shall have AMCA-Certified performance ratings and shall bear the

AMCA-Certified Ratings Seal.

C. UL Standards: Power ventilators shall comply with UL 705. Power ventilators for use for

restaurant kitchen exhaust shall also comply with UL 762.

1.9 COORDINATION

A. Coordinate size and location of structural-steel support members.

B. Coordinate sizes and locations of concrete bases with actual equipment provided.

C. Coordinate sizes and locations of roof curbs, equipment supports, and roof penetrations with

actual equipment provided.

PART 2 - PRODUCTS

2.1 CEILING-MOUNTED VENTILATORS

A. Housing: Steel, lined with acoustical insulation.

B. Fan Wheel: Centrifugal wheels directly mounted on motor shaft. Fan shrouds, motor, and fan

wheel shall be removable for service.

C. Grille: Aluminum, louvered grille with flange on intake and thumbscrew attachment to fan

housing.

D. Electrical Requirements: Junction box for electrical connection on housing and receptacle for

motor plug-in.





E. Accessories:

1. Variable-Speed Controller: Solid-state control to reduce speed from 100 to less than 50

percent.

2. Manual Starter Switch: Single-pole rocker switch assembly with cover and pilot light.

3. Time-Delay Switch: Assembly with single-pole rocker switch, timer, and cover plate.

4. Motion Sensor: Motion detector with adjustable shutoff timer.

5. Ceiling Radiation Damper: Fire-rated assembly with ceramic blanket, stainless-steel

springs, and fusible link.

6. Filter: Washable aluminum to fit between fan and grille.

7. Isolation: Rubber-in-shear vibration isolators.

2.2 MOTORS

A. Comply with NEMA designation, temperature rating, service factor, enclosure type, and

efficiency requirements for motors specified in Section 230513 "Common Motor Requirements

for HVAC Equipment."

1. Motor Sizes: Minimum size as indicated. If not indicated, large enough so driven load

will not require motor to operate in service factor range above 1.0.

B. Enclosure Type: Totally enclosed, fan cooled.

2.3 SOURCE QUALITY CONTROL

A. Certify sound-power level ratings according to AMCA 301, "Methods for Calculating Fan

Sound Ratings from Laboratory Test Data." Factory test fans according to AMCA 300,

"Reverberant Room Method for Sound Testing of Fans." Label fans with the AMCA-Certified

Ratings Seal.

B. Certify fan performance ratings, including flow rate, pressure, power, air density, speed of

rotation, and efficiency by factory tests according to AMCA 210, "Laboratory Methods of

Testing Fans for Aerodynamic Performance Rating." Label fans with the AMCA-Certified

Ratings Seal.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install power ventilators level and plumb.

B. Secure roof-mounted fans to roof curbs with cadmium-plated hardware. See Section 077200

"Roof Accessories" for installation of roof curbs.

C. Ceiling Units: Suspend units from structure; use steel wire or metal straps.





D. Support suspended units from structure using threaded steel rods and elastomeric hangers

having a static deflection of 1 inch (25 mm). Vibration-control devices are specified in

Section 230548.13 "Vibration Controls for HVAC."

E. Install units with clearances for service and maintenance.

F. Label units according to requirements specified in Section 230553 "Identification for HVAC

Piping and Equipment."

3.2 CONNECTIONS

A. Drawings indicate general arrangement of ducts and duct accessories. Make final duct

connections with flexible connectors. Flexible connectors are specified in Section 233300 "Air

Duct Accessories."

B. Install ducts adjacent to power ventilators to allow service and maintenance.

C. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical

Systems."

D. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and

Cables."



1. Manufacturer's Field Service: Engage a factory-authorized service representative to

inspect components, assemblies, and equipment installations, including connections, and

to assist in testing.

B. Tests and Inspections:

1. Verify that shipping, blocking, and bracing are removed.

2. Verify that unit is secure on mountings and supporting devices and that connections to

ducts and electrical components are complete. Verify that proper thermal-overload

protection is installed in motors, starters, and disconnect switches.

3. Verify that cleaning and adjusting are complete.

4. Disconnect fan drive from motor, verify proper motor rotation direction, and verify fan

wheel free rotation and smooth bearing operation. Reconnect fan drive system, align and

adjust belts, and install belt guards.

5. Adjust belt tension.

6. Adjust damper linkages for proper damper operation.

7. Verify lubrication for bearings and other moving parts.

8. Verify that manual and automatic volume control and fire and smoke dampers in

connected ductwork systems are in fully open position.

9. Disable automatic temperature-control operators, energize motor and adjust fan to

indicated rpm, and measure and record motor voltage and amperage.





10. Shut unit down and reconnect automatic temperature-control operators.

11. Remove and replace malfunctioning units and retest as specified above.

C. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and

equipment.

D. Prepare test and inspection reports.

3.4 ADJUSTING

A. Adjust damper linkages for proper damper operation.

B. Adjust belt tension.

C. Comply with requirements in Section 230593 "Testing, Adjusting, and Balancing for HVAC"

for testing, adjusting, and balancing procedures.

D. Replace fan and motor pulleys as required to achieve design airflow.

E. Lubricate bearings.





DIFFUSERS, REGISTERS, AND GRILLES 233713 - 1

SECTION 233713 - DIFFUSERS, REGISTERS, AND GRILLES

PART 1 - GENERAL

1.1 SUMMARY


1. Rectangular and square ceiling diffusers.

B. Related Sections:

1. Section 233300 "Air Duct Accessories" for fire and smoke dampers and volume-control

dampers not integral to diffusers, registers, and grilles.


A. Product Data: For each type of product indicated, include the following:

1. Data Sheet: Indicate materials of construction, finish, and mounting details; and

performance data including throw and drop, static-pressure drop, and noise ratings.

2. Diffuser, Register, and Grille Schedule: Indicate drawing designation, room location,

quantity, model number, size, and accessories furnished.

PART 2 - PRODUCTS

2.1 CEILING DIFFUSERS

A. Rectangular and Square Constant Supply Ceiling Register:

1. Devices shall be specifically designed for constant airflow for pressure independent

operation.

2. Material: Aluminum.

3. Finish: Baked enamel, color selected by Architect.

4. Face Size: see plan

5. Face Style: Plaque.

6. Mounting: T-bar.

7. Pattern: Fixed.

8. Dampers: Radial opposed blade.

9. Accessories:

a. Equalizing grid.

b. Plaster ring.

c. Safety chain.

d. Wire guard.

e. Sectorizing baffles.




DIFFUSERS, REGISTERS, AND GRILLES 233713 - 2

f. Operating rod extension.

2.2 REGISTERS AND GRILLES

A. Fixed Face Constant Supply Ceiling Register

1. Devices shall be specifically designed for constant airflow for pressure independent

operation.

2. Material: Aluminum.

3. Finish: Baked enamel, color selected by Architect.

4. Face Arrangement: 1/2-by-1/2-by-1/2-inch (13-by-13-by-13-mm) grid core.

5. Core Construction: Integral.

6. Frame: 1 inch (25 mm) wide.

7. Mounting: Countersunk screw.

8. Accessory: flow regulator – modulating orifice that automatically regulates airflows in

duct system to constant levels


A. Verification of Performance: Rate diffusers, registers, and grilles according to ASHRAE 70,

"Method of Testing for Rating the Performance of Air Outlets and Inlets."

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install diffusers, registers, and grilles level and plumb.

B. Ceiling-Mounted Outlets and Inlets: Drawings indicate general arrangement of ducts, fittings,

and accessories. Air outlet and inlet locations have been indicated to achieve design

requirements for air volume, noise criteria, airflow pattern, throw, and pressure drop. Make final

locations where indicated, as much as practical. For units installed in lay-in ceiling panels,

locate units in the center of panel. Where architectural features or other items conflict with

installation, notify Architect for a determination of final location.

C. Install diffusers, registers, and grilles with airtight connections to ducts and to allow service and

maintenance of dampers, air extractors, and fire dampers.

3.2 ADJUSTING

A. After installation, adjust diffusers, registers, and grilles to air patterns indicated, or as directed,

before starting air balancing.





FABRIC AIR-DISTRIBUTION DEVICES 233716 - 1

SECTION 233716 - FABRIC AIR-DISTRIBUTION DEVICES

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes continuous, tubular, fabric air-distribution devices.



B. Shop Drawings: For fabric air-distribution devices.

1.3 DESIGN & QUALITY CONTROL

A. Manufacturer must have documented design support information including duct sizing; vent

location; vent sizing; length; and suspension. Parameters for design, including maximum air

temperature, velocity, pressure and textile permeability, shall be considered and documented.

1.4 INFORMATION SUBMITTALS

A. Product Data: Submit manufacturer’s specifications on materials and manufactured products

used for work of this section.

B. Building Code Data: Submit UL file number under which product is Classified by

Underwriter’s Laboratories for both NFPA 90-A and UL 2518.

C. Provide detailed drawings confirming configuration of Textile Dispersion System (diameter,

lengths, airflow, pressure, and textile permeability).

D. Provide detailed installation instructions for components to be installed.

E. Provide warranty and maintenance documentation.

1.5 WARRANTY:

A. A. Manufacturer must provide a 10 Year Product Warranty for products supplied for the

fabric portion of this system as well as a Design and Performance Warranty.





1.6 DELIVERY, STORAGE AND HANDLING:

A. Protect textile air dispersion system and suspension components from damage during shipping,

storage, and handling.

B. Where possible, store products inside and protect from weather. Where necessary to store

outside, store above grade and enclose with a vented waterproof wrapping.

PART 2 - PRODUCTS

2.1 Manufacturers: Subject to compliance with requirements, provide products by one of the

following:

1. DuctSox Corp.

2. Fabric Duct Systems.

3. FabricAir Inc.


A. Product must be Classified by Underwriter’s Laboratories in accordance with the 25/50 flame

spread / smoke developed requirements of NFPA 90-A and UL 2518. Also Classified by UL-C

(Canada) S102.2, BS 5867 Part 2, 1980; GB8624-2006.

B. All product sections must be labeled with the logo and classification marking of Underwriter’s

Laboratories.

2.3 TEXTILE AIR DISPERSION SYSTEM

A. Surface Mount Suspension: Air diffusers shall be constructed with surface mount suspension

system.(Select only those options that apply)

1. D-Shape

a. 2 Row C-Track Surface Mount

1) System shall include aluminum C-Track system located flush with the top of

system. 80% of track to be concealed by fabric at final installation.

Hardware to include 8’ sections of track, splice connections and end

brackets as required. System attachment shall be made by Cord-In sewn

into top side flaps of system supported entire length.

a) C-Track Surface Mount suspension options: T-Bar clip and rivet

B. TEXTILE

1. Verona

a. Textile Construction: Filament/filament twill polyester, fire retardant in

accordance with UL 2518.

b. Air Permeability: 2 (+2/-1) CFM/ft2 per ASTM D737, Frazier

c. Weight: 6.8 oz. /yd2 per ASTM D3776

d. Warranty: 10 years

2. Textile Color









a. Standard: blue, white, tan, red, green, silver, black. By architect

C. TEXTILE SYSTEM FABRICATION REQUIREMENTS:

1. Textile system to be constructed in modular lengths (zippered).

2. Integrated air dispersion shall be specified and approved by manufacturer. (select only

those that apply)

a. Linear Vents

1) Air dispersion accomplished by linear vent and permeable fabric. Linear

vents must be sized in 1 CFM per linear foot increments (based on .5” SP),

starting a 1 CFM through 90 CFM per linear foot. Linear vent is to consist

of an array of open orifices rather than a mesh style vent to reduce

maintenance requirements of mesh style vents. Linear vents should also be

designed to minimize dusting on fabric surface.

2) Size of vent openings and location of linear vents to be specified and

approved by manufacturer.

3. Inlet connection to metal duct via fabric draw band with anchor patches as supplied by

manufacturer. Anchor patches to be secured to metal duct via. zip screw fastener –

supplied by contractor.

4. Inlet connection includes zipper for easy removal / maintenance.

5. Lengths to include required intermediate zippers as specified by manufacturer.

6. System to include Adjustable Flow Devices to balance turbulence, airflow and

distribution as needed. Flow restriction device shall include ability to adjust the airflow

resistance from 0.06 – 0.60 in w.g. static pressure.

7. End cap includes zipper for easy maintenance.

8. Each section of the textile shall include identification labels documenting order number,

section diameter, section length, piece number, code certifications and other pertinent

information.

D. DESIGN PARAMETERS:

1. Textile air diffusers shall be designed from 0.25” water gage minimum to 3.1” maximum,

with 0.5” as the standard.

2. Textile air diffusers shall be limited to design temperatures between 0 degrees F and 180

degrees F (-17.8 degrees C and 82 degrees C).

3. System overall design; diameter, length, airflow, operating static pressure and dispersion

shall be designed or approved by the manufacturer.

4. Do not use textile diffusers in concealed locations.

5. Use textile air dispersion systems only for positive pressure air distribution components

of the mechanical ventilation system.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Drawings indicate general arrangement of ducts, fittings, and accessories. Air outlet locations

have been indicated to achieve design requirements for air volume, noise criteria, airflow

pattern, throw, and pressure drop. Make final locations where indicated, as much as practical.

Where architectural features or other items conflict with installation, notify Architect for a

determination of final location.





B. Install chosen suspension system in accordance with the requirements of the manufacturer.

Instructions for installation shall be provided by the manufacturer with product.

3.2 CLEANING AND PROTECTION:

A. Clean air handling unit and ductwork prior to the system unit-by-unit as it is installed. Clean

external surfaces of foreign substance which may cause corrosive deterioration of facing.

B. Temporary Closure: At ends of ducts which are not connected to equipment or distribution

devices at time of ductwork installation, cover with polyethylene film or other covering which

will keep the system clean until installation is completed.

C. If systems become soiled during installation, they should be removed and cleaned following the

manufacturers standard terms of laundry.





GAS-FIRED FURNACES 235416.13 - 1

SECTION 235416.13 - GAS-FIRED FURNACES

PART 1 - GENERAL

1.1 SUMMARY


1. Gas-fired, condensing furnaces and accessories complete with controls.

2. Air filters.



B. Shop Drawings:

1. Include details of equipment assemblies. Indicate dimensions, weights, loads, required

clearances, method of field assembly, components, and location and size of each field

connection.

2. Include diagrams for power, signal, and control wiring.



1.4 WARRANTY

A. Special Warranty: Manufacturer agrees to repair or replace the following components of

furnaces that fail in materials or workmanship within specified warranty period:

1. Warranty Period, Commencing on Date of Substantial Completion:

a. Furnace Heat Exchanger: 10 years.

b. Integrated Ignition and Blower Control Circuit Board: Five years.

c. Draft-Inducer Motor: Five years.

PART 2 - PRODUCTS

2.1 ASSEMBLY DESCRIPTION

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,

Article 100, by a qualified testing agency, and marked for intended location and application.





B. General Requirements for Noncondensing Gas-Fired Furnaces: Factory assembled, piped,

wired, and tested; complying with ANSI Z21.47/CSA 2.3 and NFPA 54.

2.2 GAS-FIRED FURNACES, CONDENSING

A. Manufacturers: Subject to compliance with requirements, provide products by one of the

following:

1. Carrier Corporation; a unit of United Technologies Corp.

2. Trane.

3. YORK; a Johnson Controls company.

B. Cabinet: Steel.

1. Cabinet interior around heat exchanger shall be factory-installed insulation.

2. Lift-out panels shall expose burners and all other items requiring access for maintenance.

3. Factory paint external cabinets in manufacturer's standard color.

4. Airstream Surfaces: Surfaces in contact with the airstream shall comply with

requirements in ASHRAE 62.1.

C. Fan: Centrifugal, factory balanced, resilient mounted, direct drive.

1. Fan Motors: Comply with requirements in Section 230513 "Common Motor

Requirements for HVAC Equipment."

2. Special Motor Features, ECM: Electronically controlled motor (ECM) controlled by

integrated furnace/blower control.

D. Type of Gas: Natural.

E. Heat Exchanger:

1. Primary: Stainless steel.

2. Secondary: Stainless steel (29-4C)

F. Burner:

1. Gas Valve: 100 percent safety two-stage main gas valve, main shutoff valve, pressure

regulator, safety pilot with electronic flame sensor, limit control, transformer, and

combination ignition/fan timer control board.

2. Ignition: Electric pilot ignition, with hot-surface igniter or electric spark ignition.

G. Gas-Burner Safety Controls:

1. Electronic Flame Sensor: Prevents gas valve from opening until pilot flame is proven;

stops gas flow on ignition failure.

2. Flame Rollout Switch: Installed on burner box; prevents burner operation.

3. Limit Control: Fixed stop at maximum permissible setting; de-energizes burner on

excessive bonnet temperature; automatic reset.









H. Combustion-Air Inducer: Centrifugal fan with thermally protected motor and sleeve bearings

prepurges heat exchanger and vents combustion products; pressure switch prevents furnace

operation if combustion-air inlet or flue outlet is blocked.

I. Furnace Controls: Solid-state board integrates ignition, heat, cooling, and fan speeds; adjustable

fan-on and fan-off timing; terminals for connection to accessories; diagnostic light with

viewport.

J. Accessories:

1. CPVC Plastic Vent Materials:

a. CPVC Plastic Pipe: Schedule 40, complying with ASTM F441/F441M.

b. CPVC Plastic Fittings: Schedule 40, complying with ASTM F438, socket type.

c. CPVC Solvent Cement: ASTM F493.

2. PVC Plastic Vent Materials:

a. PVC Plastic Pipe: Schedule 40, complying with ASTM D1785.

b. PVC Plastic Fittings: Schedule 40, complying with ASTM D2466, socket type.

c. PVC Solvent Cement: ASTM D2564.

K. Capacities and Characteristics:

1. Airflow Configuration: Upflow.

2. Gas:

a. Type: Natural.

b. Venting Type: Power venter with combustion-air intake.

c. Minimum Efficiency AFUE: 96 percent.

d. Combustion-Air Inlet Material: PVC.

e. Vent Material: CPVC.

3. Fan:

a. See plan

2.3 THERMOSTATS

A. Controls shall comply with requirements in ASHRAE/IES 90.1, Section 6 - "Heating,

Ventilating, and Air Conditioning."

B. Solid-State Thermostat: Wall-mounted, programmable, microprocessor-based unit with

automatic switching from heating to cooling, preferential rate control, seven-day

programmability with minimum of four temperature presets per day,and battery backup

protection against power failure for program settings.

C. Control Wiring: Balanced twisted-pair cabling complying with requirements for Category 5e





2.4 AIR FILTERS

A. Disposable Filters: 1-inch- (25-mm-) thick fiberglass media with ASHRAE 52.2 MERV rating

of 6 or higher, in sheet metal frame.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install gas-fired furnaces and associated fuel and vent features and systems according to

NFPA 54.

B. Suspended Units: Suspend from structure using threaded rods, spring hangers, and building

attachments. Secure rods to unit hanger attachments. Adjust hangers so unit is level and plumb.

C. Base-Mounted Units: Secure units to substrate. Provide optional bottom closure base if required

by installation conditions.

D. Controls: Install thermostats at mounting height of 48 inches above floor.

E. Wiring Method: Install control wiring in accessible ceiling spaces and in gypsum board

partitions where unenclosed wiring method may be used. Conceal control wiring except in

unfinished spaces.

3.2 PIPING CONNECTIONS

A. Gas piping installation requirements are specified in Section 231123 "Facility Natural-Gas

Piping." Drawings indicate general arrangement of piping, fittings, and specialties. Connect gas

piping with union or flange and appliance connector valve.

B. Install piping adjacent to equipment to allow service and maintenance.

C. Vent and Outside-Air Connection, Condensing, Gas-Fired Furnaces: Connect plastic piping

vent material to furnace connections and extend outdoors. Terminate vent outdoors with a cap

and in an arrangement that will protect against entry of birds, insects, and dirt.

1. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.

2. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before

assembly.

3. Plastic Piping Solvent-Cement Joints: Clean and dry joining surfaces. Join pipe and

fittings according to the following:

a. Comply with ASTM F402 for safe-handling practice of cleaners, primers, and

solvent cements.

b. CPVC Piping: Join according to ASTM D2846/D2846M, Appendix.





c. PVC Pressure Piping: Join schedule number ASTM D1785PVC pipe and PVC

socket fittings according to ASTM D2672. Join other-than-schedule-number PVC

pipe and socket fittings according to ASTM D2855.

4. Slope pipe vent back to furnace or to outside terminal.

3.3 DUCTWORK CONNECTIONS

A. Connect ducts to furnace with flexible connector. Comply with requirements in Section 233300

"Air Duct Accessories."

3.4 ELECTRICAL CONNECTIONS

A. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and

Cables."

B. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical

Systems."

C. Install electrical devices furnished by manufacturer, but not factory mounted, according to

NFPA 70 and NECA 1.

D. Install nameplate for each electrical connection, indicating electrical equipment designation and

circuit number feeding connection.

1. Nameplate shall be laminated acrylic or melamine plastic signs, as specified in

Section 260553 "Identification for Electrical Systems."

2. Nameplate shall be laminated acrylic or melamine plastic signs with a black background

and engraved white letters at least 1/2 inch (13 mm) high.

3.5 CONTROL CONNECTIONS

A. Install control and electrical power wiring to field-mounted control devices.

B. Connect control wiring according to Section 260523 "Control-Voltage Electrical Power

Cables."


A. Perform the following tests and inspections:

1. Perform electrical test and visual and mechanical inspection.

2. Leak Test: After installation, charge systems with refrigerant and test for leaks. Repair

leaks, replace lost refrigerant, and retest until no leaks exist.

3. Operational Test: After electrical circuitry has been energized, start units to confirm

proper operation, product capability, and compliance with requirements.

4. Verify that fan wheel is rotating in the correct direction and is not vibrating or binding.





5. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and

equipment.

B. Verify that vibration isolation and flexible connections properly dampen vibration transmission

to structure.

END OF SECTION 235416.13




PACKAGED COMPRESSOR AND CONDENSER UNITS 236200 - 1

SECTION 236200 - PACKAGED COMPRESSOR AND CONDENSER UNITS

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes packaged, air-cooled, refrigerant compressor and condenser units.


A. Product Data: For each type of product indicated.

B. Shop Drawings: For compressor and condenser units. Include plans, elevations, sections,

details, and attachments to other work.

1. Wiring Diagrams: For power, signal, and control wiring.


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.

B. Fabricate and label refrigeration system according to ASHRAE 15, "Safety Standard for

Refrigeration Systems."

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

Section 6, "Heating, Ventilating, and Air-Conditioning."

1.4 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or

replace components of compressor and condenser units that fail in materials or workmanship

within specified warranty period.

1. Failures include, but are not limited to, the following:

a. Compressor failure.

b. Condenser coil leak.

2. Warranty Period (Compressor Only): Ten years from date of Substantial Completion.

3. Warranty Period (Components Other Than Compressor): Five years from date of

Substantial Completion.

4. Warranty Period (Condenser Coil Only): Five years from date of Substantial

Completion.





PART 2 - PRODUCTS

2.1 COMPRESSOR AND CONDENSER UNITS, AIR COOLED, 1 TO 5 TONS (3.5 TO 17.6

kW)

A. Manufacturers: Subject to compliance with requirements, provide products by one of the

following:

1. Carrier Corporation; a unit of United Technologies Corp.

2. Trane.

3. YORK; a Johnson Controls company.

B. Description: Factory assembled and tested; consisting of compressor, condenser coil, fan,

motors, refrigerant reservoir, and operating controls.

C. Compressor: Scroll, hermetically sealed, with rubber vibration isolators.

1. Motor: Single speed, and includes thermal- and current-sensitive overload devices, start

capacitor, relay, and contactor.

2. Accumulator: Suction tube.

D. Refrigerant: R-410A.

E. Condenser Coil: Seamless copper-tube, aluminum-fin coil; circuited for integral liquid

subcooler, with removable drain pan and brass service valves with service ports.

F. Condenser Fan: Direct-drive, aluminum propeller fan; with permanently lubricated, totally

enclosed fan motor with thermal-overload protection[ and ball bearings].

G. Accessories:

1. Coastal Filter: Mesh screen to protect condenser coil from salt damage.

2. Crankcase heater.

3. Cycle Protector: Automatic-reset timer to prevent rapid compressor cycling.

4. Electronic programmable thermostat to control compressor and condenser unit and

evaporator fan.

5. Evaporator Freeze Thermostat: Temperature-actuated switch that stops unit when

evaporator reaches freezing temperature.

6. Filter-dryer.

7. High-Pressure Switch: Automatic-reset switch cycles compressor off on high refrigerant

pressure.

8. Liquid-line solenoid.

9. Low-Ambient Controller: Cycles condenser fan to permit operation down to 30 deg F

(minus 1 deg C).

10. Low-Pressure Switch: Automatic-reset switch cycles compressor off on low refrigerant

pressure.

11. PE mounting base.

12. Precharged and insulated suction and liquid tubing.

13. Thermostatic expansion valve.









14. Time-Delay Relay: Continues operation of evaporator fan after compressor shuts off.

H. Unit Casing: Galvanized steel, finished with baked enamel; with removable panels for access to

controls, weep holes for water drainage, and mounting holes in base. Mount service valves,

fittings, and gage ports on exterior of casing.

I. Capacities and Characteristics: see plan


A. Energy Efficiency: Equal to or greater than prescribed by ASHRAE/IESNA 90.1, "Energy

Efficient Design of New Buildings except Low-Rise Residential Buildings," Section 6,

"Heating, Ventilating, and Air-Conditioning."

B. Testing Requirements: Factory test sound-power-level ratings according to ARI 270.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install units level and plumb, firmly anchored in locations indicated.

B. Equipment Mounting:

1. Install compressor and condenser units on cast-in-place concrete equipment bases.

Comply with requirements for equipment bases and foundations specified in

Section 033000 "Cast-in-Place Concrete."

C. Maintain manufacturer's recommended clearances for service and maintenance.

D. Loose Components: Install electrical components, devices, and accessories that are not factory

mounted.

3.2 CONNECTIONS

A. Where installing piping adjacent to equipment, allow space for service and maintenance of

equipment.

B. Connect precharged refrigerant tubing to unit's quick-connect fittings. Install tubing so it does

not interfere with access to unit. Install furnished accessories.



B. Tests and Inspections:





1. Perform each visual and mechanical inspection and electrical test. Certify compliance

with test parameters.

2. Leak Test: After installation, charge system with refrigerant and oil and test for leaks.

Repair leaks, replace lost refrigerant and oil, and retest until no leaks exist.

3. Operational Test: After electrical circuitry has been energized, start units to confirm

proper motor operation and unit operation, product capability, and compliance with

requirements.

4. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and

equipment.

5. Verify proper airflow over coils.

C. Verify that vibration isolation and flexible connections properly dampen vibration transmission

to structure.
