SECTION 230900 – HVAC INSTRUMENTATION AND CONTROL …climatech.com/jobs/Monroe-Woodsfield/Specs/23 09 00.pdf · 3. Division 26 work includes one (1) 120 volt, 20 amp circuits and

SECTION 230900 – HVAC INSTRUMENTATION AND CONTROL

PART 1 -GENERAL

1.1 WORK INCLUDES

A. Complete temperature control system as provided by Johnson Controls, Trane, TAC-IA(Invensys), Trend. Control system shall be complete in all details and have all necessarycomponent parts, such as control valves, damper motors, etc.

B. A fully integrated building automation system (BAS), incorporating direct digital control(DDC) for energy management, equipment monitoring and control.

C. All wiring, conduit and panels for all temperature controls.

D. Controls installer shall be responsible for all electrical work associated with the BAScontrol system.

1. Perform all wiring in accordance with all Local and National Codes.

2. Install all line voltage wiring, concealed or exposed, according to Division 26.

3. Division 26 work includes one (1) 120 volt, 20 amp circuits and circuit breakerslocated in each air handling unit room (four locations) from normal and/or emergencypower panel for DDC systems, only where indicated on the Electrical Drawings.Controls installer is responsible for additional line voltage power as required forcontrol system.

4. Incorporate surge transient protection in the design of the system to protect electricalcomponents in all DDC Controllers and Application Specific Controllers.

5. Conceal all wiring in occupied finished spaces, coordinate with Architect.

E. Providing all stand-alone BAS panel hardware and related peripherals, includinginterconnecting cabling and power supply required.

F. Providing all field devices including remote input/output devices, sensors, transmitters,relays, contactors, transducers, and associated electronics required to effect allinterfaces. For systems utilizing specialized trunk cables (e.g., for multiplex channels),provide all required cable.

G. Providing all communications hardware necessary for implementing data links betweenthe BAS panel(s) and all field devices.

H. Providing all specified software required to implement a complete and operational BAS,including verification and graphics of systems.

I. Furnishing complete Operating and Maintenance Manuals, and field training of operatorsand maintenance personnel.

J. Accomplishing all factory and field acceptance tests as indicated.

K. Operator workstation hardware and software for one location.

L. Graphics for operator workstations. Indicate via floor plans the location of mechanical

09021 & 09017

HVAC INSTRUMENTATION AND CONTROL 230900 - 1

and electrical equipment. The operator shall be viewing/controlling these systems viagraphical or text-base displays.

M. System commissioning, checkout and Owner training.

1.2 RELATED WORK SPECIFIED ELSEWHERE

A. Division 21 – Fire Suppression

B. Division 22 – Plumbing

C. Section 23 01 00 – HVAC General Provisions

D. Section 23 01 01 – HVAC LEED Requirements

E. Section 23 03 00 – HVAC Basic Materials and Methods

F. Section 23 04 00 – HVAC Firestopping

G. Section 23 05 13 – HVAC Variable Frequency Drives

H. Section 23 05 93 – Testing, Adjusting and Balancing

I. Section 23 30 00 – HVAC Air Distribution

J. Section 23 73 13 – Modular Indoor Air Handling Units

K. Section 23 80 00 – Decentralized HVAC Equipment

L. Section 23 81 23 – Computer Room Units

M. Section 23 81 46 – Heat Pump System Equipment

N. Division 26 – Electrical

1.3 SUBMITTALS

A. Refer to Section 23 01 00.

B. Submit complete temperature control Shop Drawings, points list, sequence of operationand component specification data prior to installation or fabrication of any equipment.Submittal data shall include a schedule of all devices and materials to be installed,selected for optimum system operation; including location, schedules, properly sizedcontrol valves and dampers. Submittals shall also include all control devices, controlpanel and communication wiring diagrams.

C. Deviations in details from the specified sequence of operation shall be clearly noted onthe submittal.

1.4 ITEMS FURNISHED BUT NOT INSTALLED

A. Automatic control dampers

B. Automatic control valves

09021 & 09017


C. Immersion wells and flow switches

D. Pressure taps

1.5 SERVICE AND GUARANTEE

A. The BAS Supplier shall be fully responsible for the debugging, calibration and properoperation of the Building Automation System, including but not limited to, sensors,controls, communication links, and peripheral devices.

B. The BAS Supplier shall also be fully responsible for providing and loading the specifiedsoftware packages, to include the loading of all necessary operational parameters. Anydebugging of software shall be performed solely by the BAS Supplier.

C. The BAS Supplier shall have a local office within a 100 mile radius of the job site, staffedwith factory trained Engineers, fully capable of providing start-up assistance, Owner'spersonnel instruction, routine maintenance and twenty-four hour emergencymaintenance service on all system components. The BAS installer shall have aminimum of 10 years experience, specifically in the installation of temperature controlsystems.

D. The BAS Supplier shall also have the capability to interface with the BAS from a remotelocation through the specified modem over any voice grade telephone lines.

E. After completion of system installation adjust all new thermostats, control valves, motorsand other equipment provided under this section with trained personnel. Place controlsin operating condition subject to the approval of the Engineer. Instruct operatingpersonnel in the operation and maintenance of the control system.

F. The control system specified herein shall be guaranteed free from defects inworkmanship and material under normal use and service for a period of one year afteracceptance. Any equipment and software herein described proven to be defective inworkmanship or material during the guarantee period shall be adjusted, repaired, orreplaced at no charge to the Owner.

1.6 WIRING

A. All wiring incidental to this temperature control system shall be provided by the BASInstaller.

B. The term "Wiring" shall be construed to include furnishing of wire, conduit, miscellaneousmaterials and labor as required for mounting and connecting electrical control devices,and providing electrical interlocks between equipment.

C. All work under this Contract shall be in accordance with the latest editions of the NationalElectrical Code (NEC) and the electric Codes in the locale in which the work is beingperformed.

D. All line voltage interlock wiring is to be run in thin-wall conduit in equipment rooms and inrigid conduit when installed in floor slabs, underground areas or areas subject todamage.

E. Low voltage (below 30 volts AC or DC) electronic control wiring where run in walls, whereexposed, or where subject to physical damage shall be installed within conduit. In ceilingspaces wiring is not required to be installed in conduit; however, provide independent

09021 & 09017


hangers or bridle rings every 5 feet. Run BAS wiring separate from other systems.

F. All cable runs shall be approved for plenum installation or run in conduit.

G. Use EMT in all mechanical rooms stubbed to an elevation 8 feet above the floor andwhere cable is exposed to damage.

H. All control wiring for sensors, transducers, communication networks, etc., shall betwisted, shielded No.18 gauge wire with plenum-rated jacket.

I. All control wiring in concealed, but accessible, areas shall be marked every 10 feet with aplastic tag indicating wire is part of "Building Automation System."

J. Refer to Division 26, 27, 28 – Electrical.

1.7 TRAINING

A. Provide competent instructors to instruct Owner’s designated personnel in theadjustment, operation and maintenance of the system installed. Instructors shall bethoroughly familiar with all aspects of the subject matter they are to teach.

All training shall be held during normal working hours, 8:00 a.m. to 4:30 p.m. weekdaysor as requested by the Owner:

B. Provide forty (40) hours on-site training for Owner's operating personnel. Training shallinclude:

1. Explanation of Drawings, Operations and Maintenance Manuals.

2. Walk-thru of the job to locate control components.

3. Direct Digital Controller and Application Specific Controller operation/function.

4. Explanation of adjustment, calibration and replacement procedures.

PART 2 -PRODUCTS

2.1 CONTROL SYSTEM ARCHITECTURE (DDC System)

A. System shall be Bacnet or Lonworks complete at the system level.

B. The building automation system (BAS) shall integrate multiple functions of the buildingincluding equipment supervision and control, alarm management, energy management,historical data collection and lighting control.

C. The building automation system shall consist of the following:

1. Stand-alone DDC Controllers

2. Stand-alone Application Specific Controllers (ASC)

3. Operator's Workstation

D. The system shall be modular in nature and shall permit expansion of both capacity andfunctionality through the addition of sensors, actuators, DDC Controllers, Application

09021 & 09017


Specific Controllers and operator devices.

E. System Architecture shall eliminate dependence upon any single device for alarmreporting and control execution. Each DDC Controller shall operate independently byperforming its own specified control, alarm management, operator I/O and datacollection. The failure of any single component or network connection shall not interruptthe execution of control strategies at other operational devices.

F. DDC Controllers shall be able to access any data from, or send control commands andalarm reports directly to, any other DDC Controller or combination of controllers on thenetwork without dependence upon a central processing device. DDC Controllers shallalso be able to send alarm reports to the workstation without dependence upon a centralprocessing device.

G. Materials and equipment shall be the catalogued products of manufacturers regularlyengaged in production and installation of automatic temperature control systems andshall be the manufacturer's latest standard design that complies with the Specificationrequirements.

H. Single source responsibility of the supplier shall be the complete installation of theBuilding Automation System and control system including debugging and proper calibra-tion of each system component.

I. All electronic equipment shall conform to the requirements of FCC Regulation, Part 15,Section 15, Governing Radio Frequency Electromagnetic Interference.

J. All system components shall be fault-tolerant.

1. Satisfactory operation within a range of 85 percent to 110 percent of rated voltageand at 3 Hertz variation in-line frequency without damage.

2. Static, transient and short-circuit protection on all inputs and outputs.

3. Protect communication lines against incorrect wiring, static transients and inducedmagnetic interference.

4. Network-connected devices to be AC coupled or equivalent so that any single devicefailure will not disrupt or halt network communication.

5. All real time clocks and data file RAM shall be battery-backed for a minimum 48-hours and include local and system low battery indication.

6. System shall be capable of receiving and printing alarms at the central location evenwhen the workstation at that location is non-operational or taken out of service forperiodic maintenance.

2.2 NETWORKING COMMUNICATIONS (DDC SYSTEM)

A. The design of the BAS shall network the operator workstation and stand-alone DDCControllers. The network architecture shall consist of two levels, a high performancepeer-to-peer network and DDC Controller specific local area networks.

B. Access to system data shall not be restricted by the hardware configuration of thebuilding automation system. The hardware configuration of the BAS network shall betotally transparent to the user when accessing data or developing control programs.

09021 & 09017


C. Peer-to-Peer Network Level

1. The operator workstation and DDC Controllers shall directly reside on a networksuch that communications may be executed directly between DDC Controllers andbetween DDC Controllers and workstation on a peer-to-peer basis.

2. All operator devices either network resident or connected via dial-up modems shallhave the ability to access all point status and application report data or executecontrol functions for any and all other devices via the peer-to-peer network. Accessto data shall be based upon logical identification of building equipment. Nohardware or software limits shall be imposed on the number of devices with globalaccess to the network data.

3. Network design shall include the following:

a. High-speed data transfer rates for alarm reporting, quick report generation frommultiple controllers and upload/download efficiency between network devices.

System performance shall insure that an alarm occurring at any DDC Controlleris displayed at workstations and/or alarm printers within 5 seconds.

b. Support of any combination of DDC Controllers and the operator workstationdirectly connected to the peer-to-peer network. A minimum of 32 devices shallbe supported on a single network.

c. Message and alarm buffering to prevent information from being lost.

d. Error detection, correction and retransmission to guarantee data integrity.

e. Synchronization of real-time clocks; include automatic daylight savings timeupdating between all DDC Controllers.

D. DDC Controller Local Area Network (LAN)

1. This level communication shall support a family of application specific controllersand shall communicate bi-directionally with the peer-to-peer network through DDCControllers for transmission of global data.

2. Application specific controllers shall be arranged on the LAN(s) in a functionalrelationship manner with DDC Controllers. For example, a terminal unit controllershall be on a LAN from the DDC Controller that is controlling the correspondingAHU.

2.3 DDC CONTROLLER

A. Stand-alone DDC Controllers shall be microprocessor-based with a minimum word sizeof 16 bits. They shall also be multi-tasking, multi-user, real-time digital control proces-sors consisting of modular hardware with plug-in enclosed processors, communicationcontrollers, power supplies and input/output point modules. Controller size shall besufficient to fully meet the requirements of this Specification.

B. Each DDC Controller shall have sufficient memory, a minimum of 1 megabyte, to supportits own operating system and databases, including:

1. Control processes

09021 & 09017


2. Energy management applications

3. Alarm management applications including custom alarm messages for each levelalarm for each point in the system.

4. Historical/trend data for points specified

5. Maintenance support applications

6. Custom processes

7. Operator I/O

8. Dial-up communications

9. Manual override monitoring

C. Each DDC Controller shall support:

1. Monitoring of the following types of inputs, without the addition of equipment outsidethe DDC Controller cabinet:

a. Analog inputs

1) 20 mA

2) 0-10 Volts DC

3) Thermistors

4) 1000 ohm RTD's

b. Digital inputs

1) Dry contract closure

2) Pulse accumulator

3) Voltage sensing

2. Direct control of electronic actuators and control devices. Each DDC Controller shallbe capable of providing the following control outputs without the addition ofequipment outside the DDC Controller cabinet.

a. Digital outputs (contact closure)

b. Analog outputs

1) 0-10 Volts DC

D. Each DDC Controller shall have a minimum of 10 percent spare capacity for future pointconnection. The type of spares shall be in the same proportion as the implemented I/Ofunctions of the panel, but in no case shall there be less than two spares of eachimplemented I/O type. Provide all processors, power supplies and communicationcontrollers complete so that the implementation of a point only requires the addition of

09021 & 09017


the appropriate point input/output termination module and wiring.

1. Provide sufficient internal memory for the specified control sequences and have atleast 25 percent of the memory available for future use.

E. Each DDC Controller shall be capable of internet communications via an integralEthernet card. Minimum communication rate shall be 10Mg BAUD. Network connectionshall be provided by Owner.

F. DDC controller shall maintain setpoints in the event of a power failure.

2.4 DDC CONTROLLER RESIDENT SOFTWARE FEATURES

A. General

1. Provide all necessary software for a complete operating system.

2. The software programs shall be provided as an integral part of DDC Controllers andshall not be dependent upon any higher level computer for execution.

B. Control Software Description

1. The DDC Controller shall have the ability to perform the following pre-tested controlalgorithms:

a. Two-position control

b. Proportional control

c. Proportional plus integral control

d. Proportional, integral, plus derivative control

2. Control software shall include a provision for limiting the number of times each pieceof equipment may be cycled within any one-hour period.

3. The system shall provide protection against excessive demand situations duringstart-up periods by automatically introducing time delays between successive startcommands to heavy electrical load.

4. Upon the resumption of normal power, each DDC Controller shall analyze the statusof all controlled equipment, compare it with normal occupancy scheduling and turnequipment on or off as necessary to resume normal operations.

C. DDC Controllers shall have the ability to perform any or all of the following energymanagement routines:

1. Time-of-day scheduling

2. Calendar-based scheduling

3. Holiday scheduling

4. Temporary schedule overrides

09021 & 09017


5. Start-stop time optimization

6. Automatic daylight savings time switchover

7. Night setback control

8. Temperature-compensated duty cycling

9. Fan speed

10. Heating/cooling interlock

11. Dial-up communications

All programs shall be executed automatically without the need for operatorintervention and shall allow user customization.

D. DDC Controllers shall be able to execute custom, job-specific processes defined by theuser, to automatically perform calculations and special control routines.

1. It shall be possible to use any of the following in a custom process:

a. Any system measured point data or status

b. Any calculated data

c. Any results from other processes

d. User-defined constants

e. Arithmetic functions (addition, subtraction, multiplication, division, square root,exp, etc.)

f. Boolean logic operators (and/or, exclusive or, etc.)

g. On-delay/off-delay/one-shot timers

2. Custom processes may be triggered based on any combination of the following:

a. Time interval

b. Time-of-day

c. Date

d. Other processes

e. Time programming

f. Events (e.g., point alarms)

3. A single process shall be able to incorporate measured or calculated data from anyand all other DDC Controllers on the network. In addition, a single process shall beable to issue commands to points in any and all other DDC Controllers on thenetwork.

09021 & 09017


4. Processes shall be able to generate operator messages and advisories to operatorI/O devices. A process shall be able to directly send a message to a specifieddevice or cause the execution of a dial-up connection to a remote device such asprinter or pager.

5. The custom control programming feature shall be documented via English languagedescriptors.

E. Alarm management shall be provided to monitor and direct alarm information to operatordevices. Each DDC Controller shall perform distributed, independent alarm analysis andfiltering to minimize operator interruptions due to non-critical alarms, minimize networktraffic and prevent alarms from being lost. At no time shall the DDC Controllers ability toreport alarms be affected by either operator or activity at a workstation, local I/O deviceor communications with other panels on the network.

1. All alarm or point change reports shall include the point's English languagedescription and the time and date of occurrence.

2. Alarm reports and messages will be directed to a user-defined list of operatordevices.

3. In dial-up applications, operator-selected alarms shall initiate a call to a remoteoperator device.

F. A variety of historical data collection utilities shall be provided to manually orautomatically sample, store and display system data for points as specified.

1. DDC Controllers shall store point history data for selected analog and digital inputsand outputs.

G. DDC Controllers shall automatically accumulate and store run-time hours for digital inputand output points as specified in the point I/O summary.

1. The totalization routine shall have a sampling resolution of one minute or less.

2. The user shall have the ability to define a warning limit for run-time totalization.Unique, user-specified messages shall be generated when the limit is reached.

H. DDC Controllers shall have the ability to count events such as the number of times asystem is cycled on and off. Event totalization shall be performed on a daily, weekly ormonthly basis for points as specified in the point I/O summary.

1. The event totalization feature shall be able to store the records associated with aminimum of 9,999.9 events before reset.

2. The user shall have the ability to define a warning limit. Unique, user-specifiedmessages shall be generated when the limit is reached.

2.5 APPLICATION SPECIFIC CONTROLLERS (ASC)

A. General

1. Each DDC Controller shall be able to extend its performance and capacity throughthe use of remote application specific controllers (ASC).

09021 & 09017


2. Each ASC shall operate as a stand-alone controller capable of performing itsspecified control responsibilities independently of other controllers in the network.Each ASC shall be a microprocessor-based, multi-tasking, real-time digital controlprocessor.

3. Each ASC shall have sufficient memory to support its own operating system anddata bases including:

a. Control Processes

b. Energy Management Applications

c. Operator I/O (Portable Service Terminal)

4. The operator interface to any ASC point data or programs shall be through thenetwork PC workstation, or a PC or portable operator's terminal connected to anypanel in the network.

5. Application Specific Controllers shall directly support the temporary use of a portableservice terminal. The capabilities of the portable service terminal shall include butnot be limited to the following:

a. Display temperatures

b. Display status

c. Display setpoints

d. Display control parameters

e. Override binary output control

f. Override analog setpoints

g. Modification of gain and offset constants

6. Powerfail Protection: All system setpoints, proportional bands, control algorithms,and any other programmable parameters shall be stored such that a power failure ofany duration does not necessitate reprogramming the controller.

7. Configuration and Download: The ASC shall have the capability of receivingconfiguration and program loading by all of the following:

a. Locally, via a direct connect portable laptop service tool

b. Over the network, from the portable laptop service tool

c. From the Operator Workstation, via the communication network

8. Hardware Override Switches: The operators shall have the ability to manuallyoverride automatic or centrally executed commands at the network panel via local,point discrete, onboard hand/off/auto operator override switches for binary controlpoints and gradual switches for analog control type points. These override switchesshall be operable whether the panel is powered or not.

09021 & 09017


9. Hardware Override Monitoring: Network panels shall monitor the status or positionof all overrides, and include this information in logs and summaries to inform theoperator that automatic control has been inhibited. Network panels shall also collectoverride activity information for daily and monthly reports.

10. Local Status Indicator Lamps: The network panel shall provide local statusindication for each binary input and output for constant, up-to-date verification of allpoint conditions without the need for an operator I/O device.

B. Unitary Controllers

1. Unitary Controllers shall support, but not be limited to, the following types ofsystems:

a. Heat Pumps

2. Unitary Controllers shall support the following types of point inputs and outputs:

a. Economizer Switchover Inputs

1) Drybulb

2) Outdoor Air Enthalpy

3) Differential Temperature

4) Binary Input from a separate Controller

b. Economizer Outputs

1) Integrated Analog with minimum position

2) Binary output to enable self-contained economizer actuator

c. Heating and Cooling Outputs

1) Analog Output with two-pipe logic

d. Fan Output

1) On/Off Logic Control

3. Unitary controllers shall support the following library of control strategies:

a. Daily/Weekly Schedules

b. Comfort/Occupancy Mode

c. Economy Mode

1) Standby Mode/Economizer Available

2) Unoccupied/Economizer Not Available

3) Shutdown

09021 & 09017


4) Lighting Logic Interlock to Economy Mode

d. Temporary Override Mode

1) Temporary Comfort Mode (Occupancy-Based Control)

2) Boost (Occupant Warmer/Cooler Control)

4. Occupancy-Based Standby/Comfort Mode Control: Each Unitary Controller shallhave a provision for occupancy sensing overrides. Based upon the contact status ofa manual wall switch or an occupancy sensing device, the Unitary Controller shallautomatically select either Standby or Comfort mode to minimize the heating/coolingrequirements while satisfying comfort conditions.

5. Occupancy-Based Zone Lighting Control: Unitary Controllers shall include anauxiliary binary output to serve as the interface to an associated lighting relay.

Based upon the status of either an occupancy sensing device or a manual wallswitch, the Unitary Controller shall provide a contact output to automatically adjustthe lighting level to accommodate occupant requirements while reducing electricalconsumption. Standby/Comfort (described in the previous section) and Lightingoverrides shall be served by the same occupancy override input.

6. Continuous Zone Temperature Histories: Each Unitary Controller shall automaticallyand continuously, maintain a history of the associated zone temperature to allowusers to quickly analyze space comfort and equipment performance for the past 24hours. A minimum of two samples per hour shall be stored.

7. Alarm Management: Each Unitary Controller shall perform its own limit and statusmonitoring and analysis to maximize network performance by reducing unnecessarycommunications.

C. AHU Controllers

1. AHU Controllers shall support all the necessary point inputs and outputs to performthe specified control sequences in a totally stand-alone fashion.

2. AHU Controllers shall have a library of control routines and program logic to performthe Sequence of Operation.

3. Occupancy-Based Standby/Comfort Mode Control: Each AHU Controller shall havea provision for occupancy sensing overrides. Based upon the contact status of amanual wall switch or an occupancy sensing device, the AHU Controller shallautomatically select either Standby or Comfort mode to minimize the heating/coolingrequirements while satisfying comfort conditions.

4. Continuous Zone Temperature Histories: Each AHU Controller shall automaticallyand continuously, maintain a history of the associated zone temperature to allowusers to quickly analyze space comfort and equipment performance for the past 24hours. A minimum of two samples per hour shall be stored.

5. Alarm Management: Each AHU Controller shall perform its own limit and statusmonitoring and analysis to maximize network performance by reducing unnecessarycommunications.

09021 & 09017


6. AHU Controllers shall have a built-in status and adjust panel interface to allow forthe local adjustment of all setpoints, temporary override of any output points andstatus of any points in alarm.

D. Central Plant (CP) Controllers

1. CP Controllers shall support, but not be limited to, the following configurations ofsystems:

a. GLHE Pump Logic

2. CP Controllers shall support all the necessary point inputs and outputs to performthe specified control sequences in a totally stand-alone fashion.

3. CP Controllers shall have a built-in status and adjust panel interface to allow for thelocal adjustment of all setpoints, temporary override of any output points and statusof any points in alarm.

4. Alarm Management: Each CP Controller shall perform its own limit and statusmonitoring and analysis to maximize network performance by reducing unnecessarycommunications.

2.6 WORKSTATIONS

A. Provide a PC workstation. Workstation shall consist of Pentium III, 1.0 Ghz CPU, with 17inch SVGA monitor, operating on 64 Mb RAM with a minimum of a 8.0 GB hard drive.Provide a 3-1/2 inch HD floppy drive, 24x CD-ROM and serial mouse. Hard wireworkstation to control system. Provide Hp LaserJet 6 printer.

2.7 LIGHTING CONTROLLERS

A. The control contractor shall provide the programming and wiring interface to allow theBAS to schedule and control the lighting control panel. The lighting control panel is byanother Division.

2.8 OPERATOR INTERFACE SOFTWARE

A. Basic Interface Description

1. Operator Workstation interface software shall minimize operator training through theuse of English language prompting, English language point identification, andindustry standard PC application software. The operator interface shall minimize theuse of a typewriter-style keyboard through the use of a mouse and with finger touchscreen interface to provide a "point and click" approach to menu selection. Thesystem operator shall perform all person machine interface functions (ie., start/stop,setpoints) by use of the mouse and by finger touch on monitor screen. Touchdevices which overlay on monitor screen are not acceptable.

2. The operator workstation software shall be based on Microsoft Windows 2000 orXP. The operator shall have the ability to incorporate industry-standard MicrosoftWindows Dynamic Data Exchange Inteface (DDE) for client applications using anythird-party software package (Microsoft compatible).

3. The BAS graphic software package shall allow the Owner to import AutoCad files offloor plans for display.

09021 & 09017


4. At the option of the user, Operator Workstations shall provide consistent graphical ortext-based displays of all system point and application data described in thisSpecification. Point identification, Engineering units, status indication andapplication naming conventions shall be the same at all workstations.

5. The Operator Interface shall provide the ability to simultaneously view severaldifferent types of system displays in overlapping windows to speed building analysis.For example, the interface shall provide the ability to simultaneously display a

graphic dipicting an air handling unit, while displaying the trend graph of severalassociated space temperatures to allow the user to analyze system performance.

6. Multiple-level password access protection shall be provided to limit workstationcontrol, display and database manipulation capabilities as deemed appropriate foreach user, based upon an assigned password.

a. Passwords shall be exactly the same for all operator devices, including portableor panel-mounted network terminals.

Any additions or changes made to password definition shall automatically causepasswords at all network panels on a network to be updated and downloaded tominimize the task of maintaining system security.

b. A minimum of five levels of access shall be supported:

1) Level 1 = Data Access and Display

2) Level 2 = Level 1 plus Operator Overrides

3) Level 3 = Level 2 plus Database Modification

4) Level 4 = Level 3 plus Database Generation

5) Level 5 = Level 4 plus Password Add/Modification

c. A minimum of 50 passwords shall be supported at each network panel.

d. Operators will be able to perform only those commands available for theirrespective passwords. Menu selections displayed at any operator device,including portable or panel mounted devices, shall be limited to only those itemsdefined for the access level of the password used to log-on.

e. User-definable, automatic log-off timers of from 1 to 60 minutes shall beprovided to prevent operators from inadvertently leaving devices on-line.

7. The operator interface shall allow the operator to perform commands including, butnot limited to, the following:

a. Start-up or shutdown selected equipment

b. Adjust setpoints

c. Add/Modify/Delete time programming

d. Enable/Disable process execution

09021 & 09017


e. Lock/Unlock alarm reporting for each point

f. Enable/Disable Totalization for each point

g. Enable/Disable Trending for each point

h. Override PID loop setpoints

i. Enter temporary override schedules

j. Define Holiday schedules

k. Change time/date

l. Enter/Modify analog alarm limits

m. Enter/Modify analog warning limits

n. View limits

o. Enable/Disable Demand Limiting for each meter

p. Enable/Disable Duty Cycle for each load

8. Reports shall be generated automatically or manually, and directed to either CRTdisplays, printers, or disk files. As a minimum, the system shall allow the user toeasily obtain the following types of reports:

a. A general listing of all points in the network

b. List all points currently in alarm

c. List of all off-line points

d. List all points currently in override status

e. List of all disabled points

f. List all points currently locked out

g. List of all items defined in a "follow-up" file

h. List all Weekly schedules

i. List all Holiday programming

j. List of limits and deadbands

Summaries shall be provided for specific points, for a logical point group, for a user-selected group of groups, or for the entire facility without restriction due to thehardware configuration of the facility management system. Under no conditionsshall the operator need to specify the address of hardware controller to obtainsystem information.

B. Provide Color graphic floor plan displays, and system schematics for mechanical

09021 & 09017


equipment.

1. The operator interface shall allow users to access the various system schematicsand floor plans via a graphical penetration scheme, menu selection, or text-basedcommands.

2. Dynamic temperature values, humidity values, flow values, and status indicationshall be shown in their actual respective locations, and shall automatically update torepresent current conditions without operator intervention.

3. The windowing environment of the PC Operator Workstation shall allow the user tosimultaneously view several graphics at the same time to analyze total buildingoperation, or to allow the display of a graphic associated with an alarm to be viewedwithout interrupting work in progress.

4. Graphic generation software shall be provided to allow the user to add, modify, ordelete system graphic displays.

a. The BAS Contractor shall provide libraries of pre-engineered screens andsymbols depiciting standard air handling unit components i.e., fans, coolingcoils, filters, dampers, etc., complete mechanical systems and electricalsymbols similar to those indicated on the drawings.

b. The graphic development package shall use a mouse or similar pointing devicein conjunction with a drawing program to allow the user to perform the following:

1) Define symbols

2) Position and size symbols

3) Define background screens

4) Define connecting lines and curves

5) Locate, orient and size descriptive text

6) Define and display colors for all elements

7) Establish correlation between symbols or text and associated system pointsor other displays

c. Graphical displays can be created to represent any logical grouping of systempoints or calculated data based upon building function, mechanical system,building layout, or any other logical grouping of points which aids the operator inthe analysis of the facility.

To accomplish this, the user shall be able to build displays that include pointdata from multiple network panels, including application specific controllersused for DDC unitary control.

C. All temperature and equipment control strategies and energy management routines shallbe definable by the operator. System definition and modification procedures shall notinterfere with normal system operation and control.

1. The system shall be provided complete with all equipment and documentation

09021 & 09017


necessary to allow an operator to independently perform the following functions:

a. Add/Delete/Modify Stand-alone network panels

b. Add/Delete/Modify Operator Workstations

c. Add/Delete/Modify Application Specific Controllers

d. Add/Delete/Modify points of any type, and all associated point parameters, andtuning constants

e. Add/Delete/Modify alarm reporting definition for each point

f. Add/Delete/Modify control loops

g. Add/Delete/Modify energy management applications

h. Add/Delete/Modify time and calendar-based programming

i. Add/Delete/Modify Totalization for every point

j. Add/Delete/Modify Historical Data Trending for every point

k. Add/Delete/Modify custom control processes

l. Add/Delete/Modify any and all graphic displays, symbols, and cross-referencesto point data

m. Add/Delete/Modify dial-up telecommunication definition

n. Add/Delete/Modify all operator passwords

o. Add/Delete/Modify Alarm Messages

2. Definition of operator device characteristics, network panels, individual points,applications and control sequences shall be performed through fill-in-the-blanktemplates and graphical programming approach.

Graphical programming shall allow the user to define the software configuration ofDDC control logic for HVAC system control sequences, fan interlocks, PID controlloops, and other control relationships through the creation of graphical logic flowdiagrams.

a. Graphical Programming: Control sequences are created by using a mouseinput device to draw interconnecting lines between symbols depicting inputs,operators (comparisons and mathematical calculations), and outputs of acontrol sequence. As a minimum, graphic symbols shall be used to represent:

1) Process inputs, such as temperature, humidity, or pressure values, status,time, date, or any other measured or calculated system data

2) Mathematical Process Operators, such as addition, subtraction,multiplication, or greater than, equal to, less than, etc.

3) Logical Process Operators such as AND, OR, Exclusive OR, NOT, etc.

09021 & 09017


4) Time delays

5) Process Control Outputs such as start/stop control points, analog adjustpoints, etc.

6) Process Calculation Outputs

7) Text file Outputs and Advisories

b. Network-Wide Strategy Development: Inputs and outputs for any process shallnot be restricted to a single network panel, but shall be able to include data fromany and all other network panels to allow the development of network-widecontrol strategies. Processes shall also allow the operator to use the results ofone process as the input to any number of other processes (cascading).

c. Sequence Testing and Simulation: A software tool shall be provided, whichallows a user to simulate control sequence execution to test strategies beforethey are actually applied to mechanical systems. Users shall be able to enterhypothetical input data, and verify desired control response and calculationresults via graphical displays and hardcopy printouts.

3. All portions of system definition shall be self-documenting to provide hardcopyprintouts of all configuration and application data. Control process and DDC controlloop documentation shall be provided in logical, graphical flow diagram format toallow control sequences to be easily interpreted and modified at any time in thefuture.

4. Back-up copies of all stand-alone network panel databases shall be stored in thepersonal computer operator workstation. Continuous supervision of the integrity ofall network panel data bases shall be provided. In the event that any network panelon the network experiences a loss of its database for any reason, the system shallautomatically download a new copy of the respective database to restore properoperation. Data base back-up/download shall occur over the local area networkwithout operator intervention. Users shall also have the ability to manually executedownloads of any or all portions of a network panels database.

2.9 CONTROL SYSTEM COMPONENTS (General)

A. Control Valves

1. Valves: Single-seated, two-way straight through body type or three-way mixing ordiverting body polished stainless steel stems, and spring loaded teflon packing.

Valves shall have a modulating plug for water service depending upon its particularuse. Where required valves shall be spring sequenced to give proper operation ofcontrol and the operator shall be of sufficient size and power to give positive shutoffor gradual modulation as required.

2. Water valves shall be sized on the basis of 15 percent of the total system pressuredrop, but not more than 10 feet of head drop.

3. Valves 2 inches and smaller: screwed bodies; 2-1/2 inches and larger: flangedbodies; designed for 125 psi operating pressure. Arranged to fail-safe as called for,tight closing and quiet operating.

09021 & 09017


4. The controls supplier shall correctly size all valves and supervise their installation.Submit valve sizing as part of shop drawing submittal.

B. Electric Operators (Valve)

1. Provide 24 Volts AC valve actuators which are 0-10 Volt DC input proportional or twoposition with spring return as required by control sequence, designed for waterservice valve bodies.

2. Operator shall be synchronous motor driven with up to 150 inch-pound force withforce sensor safety stop. Enclosure shall be cast aluminum

C. Electric Operators (Damper)

1. Provide 24 and 120 Volts (or voltage indicated on drawings) AC damper actuatorswhich are 0-10 Volt DC input proportional or two position with spring return asrequired by control sequence, designed to operate control dampers. Operator shallbe synchronous motor driven with up to 150 inch-pound force with force sensorsafety stop and spring return as required. Enclosure shall be cast aluminum.

D. Air Flow Control Dampers

1. Provide low leakage air flow control dampers of size indicated on plans. Dampersshall be opposed or parallel blade operation to suit application.

2. The damper leakage rate at 4.0 inches w.g. pressure differential shall not be greaterthan 4.2 cfm per sq. ft.

3. Control dampers shall meet the following minimum construction standards. Frameshall be 0.125 inch thick aluminum hat channel. Blades shall be heavy gageextruded aluminum airfoil type. Blade edge seals shall be neoprene type orequivalent suitable for -72 degrees F to +275 degrees F, mechanically locked intothe blade edge. Jamb seals shall be flexible metal, compression type to preventleakage between blade end and damper frame.

4. No individual section of a damper shall be larger than 48 inch by 48 inch size.Dampers larger than 48 inch by 48 inch shall be made up of multiple dampersections. Provide jack shafts between multiple sections for connection to damperoperator(s).

5. Bearings shall be corrosion resistant, molded synthetic type turning in an extrudedhole in the damper frame. Axles shall be constructed of plated steel and be squareor hexagonal positively locked into the damper blade. Linkage shall be concealedout of the airstream, within the damper frame.

6. Submittal shall include leakage, maximum air flow and maximum pressure ratingsbased on AMCA Publication 500.

7. Dampers shall be in all respects equivalent to Ruskin model CD50. Acceptablemanufacturers are Ruskin, Johnson controls, and American Warming.

E. Low Limit Thermostat (Freezestat)

1. Provide low temperature thermostats at all air handling unit heating coils and whereindicated by the Sequence of Operation.

09021 & 09017


2. Thermostat shall have a DPDT switch and 20 foot long sensing element.Thermostat shall be adjustable from 34 degrees F. to 70 degrees F.

3. Provide one thermostat for each coil up to 20 square feet of coil surface. Providemultiple thermostats for coils greater than 20 square feet. Install element inserpentine pattern across coil at minimum rate of 1 foot of element for each squarefoot of coil. Provide grommets at element supports to prevent damage to element.

4. Thermostats shall be hard wired to the air handling unit fan and require a manualreset after activation. Thermostats on DDC system shall be auto reset when theDDC system is alarmed on trip. Fan lockout and reset shall be by Software.

5. Thermostat shall trip when any 1 foot of element senses air temperature below setpoint.

2.10 GLYCOL SOLUTION FLOW METERS

A. Provide flow meter on glycol solution primary and secondary piping as indicated on flowdiagram.

B. Meter to be Rosemount Model 8705 magnetic flow meter.

C. Construction: Type 304 stainless steel flow tube, welded steel housing with polyurethanepaint, ANSI Class 300, Type 304 stainless steel flanges.

D. Transmitter: Accuracy is ± 0.5% of rate from 1 to 40 feet per second flow velocity.Digital output for interface with BAS.

2.11 DDC SYSTEM SENSORS

A. Temperature Sensors

1. Temperature sensors shall be 1,000 OHM RTD type or thermistors with 0.36degrees F accuracy. Analog temperature sensors shall provide an output signal thatvaries continuously with the sensed temperature, within a specified range.

2. All sensors of a particular category shall be of the same type and manufacturer.Provide temperature sensors suitable for one or more of the following mountingmethods:

a. Insertion Type - suitable for insertion into air ducts at any angle and shall have aminimum insertion of 6 inches.

b. Immersion Type - suitable for immersion into fluids in tanks or pipes withseparable well and heat transfer compound.

c. Averaging Type with Extended Element - suitable for duct mounting to obtainaverage temperature by sampling along a capillary tube element not less than 8feet in length.

d. Outside Air Sensing Type - shall have sun shades to minimize solar effects andshall be mounted to minimize building outside air film effects.

e. Space Type - provide plastic vented, lockable guard enclosure where indicated

09021 & 09017


on plans.

f. Provide occupied/unoccupied override switch where indicated. Refer toSequence of Operation.

3. The following shall apply to temperature sensors:

a. All external trim material shall be completely corrosion resistant with all partsassembled into a watertight, vibration-proof, heat resistant assembly.

b. Sensor wells shall be brass and compatible with the sensor.

B. Differential Pressure Switches (Water)

1. All pressure sensing elements shall be corrosion resistant.

2. Pressure sensing elements shall be diaphragm type as required by the application.

3. Units shall have adjustable range and differential pressure settings.

4. Pressure sensor switches shall be snap action type.

5. Sensor assembly shall operate automatically and reset automatically whenconditions return to normal.

6. Protect complete sensor assembly against vibration at all critical movement pivotsand slides.

7. Sensors on all liquid lines shall have an isolation valve installed between eachsensor and its pressure source.

8. Sensor Ratings: Sensors shall have the following pressure and accuracy ratings.

a. Water pressure sensors shall be rated at 125 psig, with an accuracy of plus orminus 1 psi.

C. Relative Humidity Sensors

1. Relative humidity sensors shall be an analog precision resistance type relativehumidity detector. Sensor shall have an overall accuracy of plus or minus 2 percentof span over a range of 20 to 80 percent relative humidity.

2. Humidity sensor shall be capable of electronic calibration. Salt bath calibration is notacceptable.

D. Current Switch

1. Current switch shall be solid state self-powered and designed to sense AC current ina conductor passed through its circular window opening and provide and ON/OFFstatus indication of the powered equipment.

E. Air Flow Measuring Stations

1. Provide electronic airflow traverse probes and transmitters for the purpose ofcontinuously monitoring duct airflow volume.

09021 & 09017


a. Install on fan inlets for supply and return/exhaust fans for all outdoor airdistribution air handling units, except for the Administration energy recoveryventilators. Air floe measuring stations shall not be installed.

b. Install on fan inlets for supply and return/exhaust fans and on outdoor air intakeduct for single zone air handling units.

2. Fan inlet and duct mounted air flow stations: Paragon Controls Inc model “FE”series insertion type air flow elements. The Signal Processor shall be: 1/2% fullscale accuracy with square root function, signal scaling and 4-20 mA output of CFM.

3. Minimum Outside Airflow Measurement System

a. Paragon Model FE1000, Airflow Measurement System shall provide a minimumventilation measurement over an operating range of 100 to 1,400 feet perminute. Provide linearization function to compensate for installations wherenon-minimum duct conditions are encountered.

b. The signal processor shall be Paragon Controls Inc “MicroTran” 1/10th % fullscale accuracy signal processor with integral square root function, scalingfunction, output filter, 11 point linearization capability, 0-10VDC output of CFMvalue and local LED read out of CFM value. Auto zero circuit shall be includedto offset zero drift. Temperature compensation shall be provided to compensatefor air density.

4. Materials: Standard 6063-T5 Anodized aluminum.

5. Acceptable manufacturers are Paragon, Tek-Air, Ebtron, Ramsey, or Veris.

F. Carbon Dioxide (CO2) Space sensor

1. Sensor to be wall mounted type, outside dimensions to be less than 4 inches wide x5 inches high, plastic enclosure.

2. Sensor to be used for sensing carbon dioxide (CO2) level using non-dispersiveinfrared (NDIR), diffusion sampling.

3. CO2 Measuring Range: 0-2000 ppm; accuracy: ± 75 ppm; repeatability: ± 20 ppm.

4. Selectable output of: 0-5 Vdc, 0-10 Vdc, 4-20 mA.

5. 24 VAC power supply

6. Alta Labs “CX” Series without LCD display.

G. Carbon Dioxide (CO2) Duct Mounted sensor

1. Provide remote CO2 duct mounted sensors as located on the drawings. The remoteCO2 sensors shall utilize a non-dispersive infrared optical sensor cell for long lifeand accurate, stable CO2 sensing.

2. CO2 Measuring Range: 0-2000 ppm; accuracy: ± 75 ppm; repeatability: ± 20 ppm.

3. Selectable output of: 0-5 Vdc, 0-10 Vdc, 4-20 mA.

09021 & 09017


4. 24 VAC power supply.

5. GE 8007, without display.

H. Heat Pump Isolation Valve

1. Two-position, line-size control valve. Brass body construction.

2. 24 volt actuator.

3. Acceptable manufacturer: Belimo LR series or Erie Hot Line/Motortrol valve, Asco.

PART 3 -EXECUTION

3.1 GENERAL REQUIREMENTS

A. General

1. As soon as the systems are operable, all controls, sensors and switches shall beproperly calibrated.

2. Furnish and mount all relays, switches, pressure switches, extra contacts, asrequired in enclosures.

3. Each instrument shall be tagged by the use of embossed tape, corresponding to thesymbol used on the control diagrams. Each ASC, DDC Control panel, heat pumpcontroller, AHU controller, CP controller and Terminal Unit controller shall beindentified by engraved nameplate.

4. Provide all line voltage temperature control devices. Wherever such devices areshown on electrical drawings, they shall be wired by Division 26; when not indicatedon electrical drawings, they shall be wired by controls installer.

5. Provide all temperature control devices and all transformers required for thesystems.

6. Motor operated dampers and valves furnished under this Section shall be installedunder the applicable Section of Division 23 specification.

a. This controls supplier shall supervise, and shall be held fully responsible forproper installation and operation of these devices.

b. Whenever the installation of the dampers and valves is incorrect, controlssupplier shall arrange for necessary corrections.

7. All controllers shall be provided with necessary contacts and devices for remotecontrol point adjustment.

8. Provide dial thermometers at all duct and pipe sensors. Locate thermometeradjacent to sensor.

9. All equipment isolated for vibration shall have all electrical connections made withinflex conduit.

3.2 CONTROL INSTRUMENTS

09021 & 09017


A. Control equipment provided by equipment manufacturers

1. Install all devices and required control wiring for all control devices and equipmentprovided by equipment manufacturers. Equipment and wiring includes but is notlimited to the following:

a. Make-up air unit space temperature and humidity sensors.

b. Remote unit heater temperature sensors.

c. Computer room ACU sensors and wiring to outdoor equipment.

d. Kitchen hood temperature EF interlock

B. Space Sensors

1. Install and locate for proper and ample sensing of the space temperature.

a. Locations indicated on the drawings are diagrammatic, and may be changedwith the approval of the Engineer where deemed advisable by controls installer.

C. Local Enclosures/Panels

1. Locate as indicated on plans or for the convenience of adjustment and service.Location shall be approved by the Architect prior to installation.

3.3 TESTING AND DEMONSTRATION

A. General

1. Whenever seasonal operating portions of the system occur at a time when finalcontrol settings and adjustments cannot be properly made due to outside weatherconditions (cooling or heating), such final retesting and rebalancing as required shallbe made during the first full load operating conditions of the respective seasons.

2. Demonstration: Upon complete installation and testing of the system, the controlsinstaller shall demonstrate to the satisfaction of the Engineer that all requirements ofthe installation have been fulfilled as specified.

B. Testing and Balancing

1. The installation, programming, establishment of initial setpoints and debugging of allcontrol systems is the responsibility of the controls supplier. The testing andbalancing of the entire HVAC system including the temperature control system is theresponsibility of the balancing agency.

2. During the testing and balancing phase of work, the controls supplier shall provide atechnician to assist the balancing agency in the operation of the control system toestablish the mode of operation required to properly test and balance the HVACsystem and test and verify temperature control system operation.

3. Programming or setpoint changes required as a result of system analysis andbalancing shall be made by the controls supplier.

3.4 TESTS

09021 & 09017 HVAC INSTRUMENTATION AND CONTROL 230900 - 25

A. This work shall include pre-delivery testing of major components, field testing andadjustment of major subsystems and of the complete BAS, and an on-site finaloperational acceptance test of the complete operational BAS. Provide performancecertifications of the required tests.

Acceptance of tests by the Architect shall not relieve controls supplier of anyresponsibility for the complete system meeting the requirements of these Specificationsafter installation.

B. Field Test: After installation of the field panels and related peripherals, and the fieldinterface devices and sensors, calibrate equipment and check transmission media.

C. Operational Acceptance Test: Conduct final operational test on the complete, totallyinstalled and operational BAS to demonstrate that it is functioning properly in accordancewith all requirements of this Specification. Demonstrate the correct operation of allmonitored and controlled points as well as the operation and capabilities of allsequences, reports, specialized control algorithms, diagnostics, and all other software.Final acceptance of the system shall be made, provided the Contractor has satisfied allother requirements of this Specification.

D. The controls supplier shall provide to the Engineer for operational acceptance thefollowing Documents generated by the BAS.

1. All Points Summary

2. Alarm Point Summary

3. Alarm Message Summary

4. Totalization Summary

5. Trend Log of Temperature Points over 24-hour period

6. Start/Stop times for all Mechanical Systems

7. Optimal Start/Stop Parameters

8. Software Documentation for all BAS Programs installed in Application SpecificControllers and Central Station

E. Where it is required for controls supplier to modify, alter, add or remove hardware orsoftware programs of the BAS or related accessories for the purpose of testing, thesechanges shall be done as required by controls supplier until such time acceptableperformance of the BAS has been established. Problems which occur within approvedhardware or software shall be corrected in an appropriate fashion under guarantee. Anysuch occurrence shall not void previous approval; however, controls supplier shall beresponsible for prompt remedial action.

3.5 INSTALLATION OF AIRFLOW MEASURING STATIONS

A. Location and sizing of airflow measurement elements shall be confirmed in the field bylocal factory representative. Velocity profile and corresponding differential pressurecalculations will be based on field measured values.

B. Elements shall be installed in strict accordance with the manufacturer’s published

09021 & 09017


requirements; therefore, it shall be the responsibility of the contractor to verify theinstallation, to assure that accurate primary signals are obtained.

3.6 ROOM DESIGNATIONS

A. The final room names and numbers shall be used for the graphic displays and updatedon the shop drawings for O/M manual documents, regardless of the room names andnumbers used on the bid documents.

3.7 SEQUENCE OF OPERATION

A. GLHE Pumps

1. The two primary pumps (GLHE system pumps) shall operate simultaneously. Pumpstatus shall be monitored by the BAS. Upon failure of a pump, an alarm shall signalat the BAS, the remaining pump shall continue to operate. The primary pumps shalloperate as follows:

a. When the indoor glycol loop return temperature is between 55 deg. F and 75deg. F the primary pumps shall be “off”. When the return temperature is outsideof this range, the pumps shall operate. The primary pumps shall have aminimum runtime of 15 minutes.

b. Pump VFD operation: The two flow meters shall monitor the flow rate of theprimary and secondary piping loops. The primary pump VFD’s shall modulatepump speed to match the flow of the primary pump loop to the secondary pumploop. If the primary loop supply temperature (from the bore field to the building)is higher than 90 deg. F. or lower than 40 deg. F., then the VFD’s shall operateat 100% speed.

2. The two secondary pumps shall operate in a lead/lag arrangement. Pump statusshall be monitored. The lead pump shall operate continuously. Upon failure of thelead secondary pump an alarm shall signal at the BAS and the lag pump shall start.Pumps shall rotate lead and standby positions every 500 run hours. The lag pumpshall also operate as follows:

a. If the lead pump is at full speed and the system differential pressure set pointcannot be maintained, the lag pump shall operate.

b. The lead pump shall remain at full speed and the lag pump speed shallmodulate to full speed. The pumps shall simultaneously modulate speed tomaintain setpoint.

c. When the total secondary flow is less than the flow rate capability of the leadpump (as measured by the flow meter), then the lag pump shall shut-down.

3. The secondary pump VFD’s shall be controlled by a differential pressure sensorlocated in the piping system. The VFD shall modulate the pump speed to maintainsystem pressure at the sensor.

4. A differential pressure sensor across the solids separator shall be monitored. Analarm shall signal at the BAS when the differential pressure across the separator is 5psi than the differential pressure with a clean strainer.

5. The primary and secondary flow rates shall be monitored (in GPM) at the (2) flow

09021 & 09017


meters.

6. The following temperatures shall be monitored:

a. Primary GS/GR to/from GLHE

b. Secondary GS/GR

B. Water-to-Water Heat Pump (Hot / Chilled Water Plant)

1. Heat Pump(s) shall be activated based on a call for heating or cooling from an AHUzone. When the outdoor ambient temperature is at 65 deg. F. or above, the water-to-water heat pump heating operation shall be locked out. When the outdoor ambienttemperature is at 60 deg. F. or below, the water-to-water heat pump coolingoperation shall be locked out. Between 60 and 65 deg. F., cooling and heatingoperation of heat pumps shall not occur simultaneously.

2. Load Side Primary Pumps (P-5,6)

a. The lead pump shall operate based on the heating or cooling demand of thesecondary loop as described in paragraph 5 below.

b. The two primary pumps shall operate in a lead/lag arrangement. Pump statusshall be monitored. Upon failure of the lead pump an alarm shall signal at theBAS and the lag pump shall start. Pumps shall rotate lead and standbypositions every 250 run hours.

c. The pump must start prior to the compressor being allowed to operate

3. Load Side Secondary Pumps (P-7,8)

a. The load side pump shall operate when there is a call for heating or coolingfrom the AHU zone.

b. The secondary pump VFD speed shall be modulated to maintain spacetemperature as described in the single zone AHU sequence of operation (AHU-3 for both schools). The VFD shall not be controlled by differential pressure inthe system.

c. The pumps shall operate in a lead/stand-by arrangement. Upon failure of thelead pump an alarm shall signal at the BAS and the stand-by pump shall start.Pumps shall rotate lead and standby positions every 250 run hours.

4. Glycol Solution Isolation Valve

a. The source side (GLHE side) isolation valve must be open prior to thecompressor being allowed to operate. When the compressor is “on” the valveshall be “open”. When the compressor is “off”, the valve shall be “closed”.Activation occurs from the unit control panel.

5. Temperature Control

a. The system includes (2) heat pumps; piped so that the (2) heat pumpsoperating in a lead/lag arrangement.

09021 & 09017


b. When there is a call for heating from the AHU, the lead heat pump shall operatein the full heating mode and the associated primary pump shall operate aspreviously specified to maintain the heating water setpoint (118 deg. F.). If theheating water setpoint is not satisfied after 15 minutes of lead heat pumpoperation, the lag heat pump shall operate in the full heating mode.

c. When there is a call for cooling from the AHU, the lead heat pump shall operatein the full cooling mode and the associated primary pump shall operate aspreviously specified to maintain chilled water setpoint (43 deg. F). If the chilledwater setpoint is not satisfied after 15 minutes of lead heat pump operation, thelag heat pump shall operate in the full cooling mode.

d. The heat pumps shall operate for a minimum of 15 minutes to prevent shortcycling. When the compressors turn “off”, a 4 minute time delay before thecompressors operate again will be used to prevent short cycling of thecompressor.

6. Heat pump inlet and discharge water temperatures shall be monitored.

7. Main GS/GR temperatures shall be monitored.

C. Heat Pump (Single Zone)

1. Heat Pumps shall be set to the occupied and unoccupied modes via the BAS basedon the School’s occupancy schedule.

2. Fan Operation

a. During the occupied mode, the fan shall run continuously.

b. During the unoccupied mode, the fan shall cycle “on/off” to satisfy theunoccupied setback temperature setpoint.

3. Glycol Solution Isolation Valve

a. The valve must be open prior to the compressor being allowed to operate.When the compressor is “on” the valve shall be “open”. When the compressoris “off”, the valve shall be “closed”.

4. Zone Temperature Control

a. Cooling: When the zone temperature is greater than or equal to the coolingtemperature setpoint, the controller will go into the cooling mode, and thecompressor stage(s) will be sequenced to maintain the cooling setpoint. A 4minute delay will be used to prevent short cycling of the compressor.

b. Deadband: When the zone temperature is 1.5 degrees F below the coolingtemperature setpoint, or 1.5 degrees above the heating temperature setpoint,the controller will go into deadband. It will stay in deadband until temperaturesetpoint. The compressor shall remain off in deadband. The heating/coolingsetpoints shall be 72/75 degrees F., respectively.

c. Heating: When the zone temperature is less than or equal to the heatingtemperature setpoint, the controller will go into the heating mode, andcompressor stage(s) will be sequenced to maintain the heating setpoint. A 4

09021 & 09017


minute time delay will be used to prevent short cycling of the compressor.

d. Reversing Valve Operation: the load controller shall calculate the midpointbetween the heating and cooling setpoint, and switch the reversing valve to theappropriate position at 1/2 degrees F on either side of the midpoint.

5. Heat pump discharge air temperature shall be monitored.

6. When water is detected in the internal heat pump drain pan by the heat pumpinternal high water level sensor, the heat pump shall shut down and an alarm shallsignal at the BAS.

7. Condensate pumps

a. Where condensate pumps occur as indicated on the plans, the BAS shallmonitor the condensate pump overflow safety switch contactor. Upon an alarmcondition, the associated heat pumps shall shut down and an alarm shall signalat the BAS.

8. The heat pump shall shut down upon receiving a signal from the associated ductsmoke detector. Fire alarm devices and wiring by Division 26.

D. Air Handling Units for outdoor air distribution systems

1. This sequence of operation applies to the following AHUs:

a. Monroe High School: AHU-1

b. Woodsfield K-8 School: AHU-1, AHU-2, AHU-5

2. The AHU shall be set to the occupied/unoccupied mode based on a signal from theBAS per the School’s operating schedule.

3. During the unoccupied mode, the energy recovery wheel (ERW) shall not rotate, thesupply and exhaust fans shall be “off” and the outdoor air intake and exhaustdampers shall be closed.

4. During the occupied mode, the dampers shall be open and the fans shall be “on”.

5. The dry bulb and wet bulb temperatures on both sides of the energy recovery wheel,in both air streams shall be monitored.

6. Each filter bank shall be monitored for “dirty filter” status.

7. The ERW motor shall be monitored for failure.

8. Fan status shall be monitored for each fan.

9. Electric heating coil

a. The electric heating coil shall maintain the AHU leaving air temperature at 70deg. F when the outdoor air temperature is less than 60 deg. F. When theoutdoor is at 60 deg. F. or higher, the heating shall be locked out.

b. The BAS shall provide a signal to the heating coil control panel for heater

09021 & 09017


staging.

c. An airflow proving switch shall be required to provide proof of airflow for heaterto operate.

10. Economizer control: When the outdoor air temperature is between 60 degrees F.and 75 degrees F dry bulb, the ERW shall stop rotating. By-pass dampers shallopen to allow the air streams to by-pass the wheel.

11. AHU’s shall shut-down upon a signal from the associated duct smoke detectors.Duct smoke detectors provided and installed by Division 26.

12. AHU VFD control:

a. The supply fan VFD shall modulate based on the Classroom Demand ControlVentilation sequence.

b. The exhaust fan VFD shall modulate to maintain and exhaust airflow rate 10%less than the OA supply quantity.

c. The local classroom general exhaust fan operation shall be monitored (perparagraph J below). When a fan is in operation, the EF VFD for the AHUserving the area of the classroom EF shall modulate speed to provide 1000 cfmless than the OA airflow quantity for each fan in operation.

13. The air flow monitors for the supply and return/exhaust fans, and the outdoor airintake shall be continually monitored to record airflow quantities.

14. Classroom Demand Control Ventilation Sequence:

a. A wall mounted space CO2 sensor shall be located in all spaces served by theAHU’s, except for toilet rooms, storage rooms, janitors closets. Locate near wallmounted temperature sensors (where sensors occur) or near wall mounted lightswitches (where temperature sensors do not occur).

b. Space CO2 sensors shall monitor the CO2 level in the spaces. The associatedsupply fan VFD shall modulate based on the space with the highest CO2demand.

c. The maximum allowable limit shall be 700 ppm for above the outdoor ambientCO2 level. The lag/response time of the zone damper shall meet therequirements of ASHRAE standard 62-1999 (10 minutes maximum).

15. Dining Demand Control Ventilation Sequence (Woodsfield AHU-5 only)

a. A wall mounted space CO2 sensor shall be located in the Dining Area.

b. Space CO2 sensor shall monitor the CO2 level in the space. The VFDs shallmodulate to maintain space CO2 setpoint of 700 PPM above ambient outdoorlevels.

c. The maximum allowable limit shall be 700 ppm for above the outdoor ambientCO2 level. The lag/response time of the zone damper shall meet therequirements of ASHRAE standard 62-1999 (10 minutes maximum).

09021 & 09017


E. Administration Area Energy Recovery Ventilators (ERV)



b. Woodsfield K-8 School: AHU-4

2. The ERV shall be set to the occupied/unoccupied mode based on a signal from theBAS per the School’s operating schedule.

3. During the unoccupied mode, the ERV shall not operate, and the outdoor air intakeand exhaust discharge dampers shall be closed.

4. During the occupied mode, the dampers shall be open and the fans shall be “on”.

5. The BAS shall monitor a dirty filter contact on the ERV.

6. The BAS shall monitor fan status.

7. The BAS shall control the electric duct heater as follows:

a. The electric heating coil shall maintain the ERV leaving air temperature at 70deg. F when the outdoor air temperature is less than 60 deg. F. When theoutdoor is at 60 deg. F. or higher, the heating shall be locked out.

b. The BAS shall provide a signal to the heating coil control panel for heaterstaging.

c. An airflow proving switch shall be required to provide proof of airflow for heaterto operate.

F. Single Zone Variable Volume AHU



b. Woodsfield K-8 School: AHU-3

2. The AHU shall be set to the occupied and unoccupied mode based on a signal fromthe BAS per the School’s operating schedule. Provide a manual occupied overrideat the space temperature sensor for a 3hr (adjustable) time period.

3. Unoccupied mode:

a. Cooling shall be locked out, unless the system operates in the dehumidificationmode.

b. Upon a call for night setback heating (setpoint = 60 deg. F), the AHU supply andreturn fan shall operate at 50% speed. The AHU dampers shall be set to 0%OA, 100% RA.

c. The AHU shall operate in the heating mode, as described in the occupiedheating sequence, to maintain space temperature setpoint.

09021 & 09017


d. When the space temperature setpoint is satisfied, the AHU shall shut-down.

e. Unoccupied Dehumidification: On a rise in humidity above 65% RH asmeasured by the space sensor, the AHU supply and return fan shall operate at50% speed. The AHU dampers shall be set to 0% OA, 100% RA. The unitoperates in the dehumidification mode as described below until the RH drops tobelow 60% RH. When the space RH is satisfied, the AHU shall shut-down.

4. Occupied mode:

a. The supply fan shall operate continuously. The OA/RA dampers shall be in theminimum OA position unless commanded to provide more OA based on theeconomizer sequence or Demand Control Ventilation (DCV) sequence.

b. The supply fan shall initially operate at 50% speed. The supply fan VFD shallincrease speed based a need for additional heating, cooling, or OA per the DCVsequence.

c. Control valve operation: The heating and cooling coil control valves are line sizetwo-position valves – fully open or closed. The valves do not modulate to controlspace temperature. When there is a call for space cooling, the cooling coilcontrol valve shall be 100% open and the heating coil control valve shall beclosed. When there is a call for space heating, the heating coil control valveshall be 100% open and the cooling coil control valve shall be closed

d. Upon a call for heating, the heating coil control valve shall be 100% open. Thesecondary pump VFD shall modulate speed to maintain occupied spacetemperature setpoint. The heating leaving air temperature shall not be allowedto exceed 90 deg. F. If the AHU leaving air temperature is at 90 deg. F., andthere is a continued call for heating, the fan VFD shall modulate toward 100%speed to maintain space temperature setpoint, the AHU leaving air temperatureshall remain at 90 deg. F. If the VFD is at 50% speed, and heating is satisfied,the leaving air temperature shall be modulated lower to maintain spacetemperature.

e. Upon all call for cooling, the cooling coil control valve shall be 100% open. Thesecondary pump VFD shall modulate speed to maintain a leaving airtemperature of 55 deg. F. Upon a continued call for cooling, the fan VFD shallmodulate toward 100% speed to maintain space temperature setpoint, theleaving air temperature shall remain at 55 deg. F. If the VFD is at 50% speed,and cooling is satisfied, the secondary pump VFD shall modulate pump speedto maintain space temperature setpoint, unless overridden by thedehumidification sequence.

5. Occupied Mode Dehumidification: On a rise in humidity above 65% RH as measuredby the space sensor, the unit’s cooling control valve is 100% open and thesecondary pump speed is modulated to provide 55 deg. F. supply air temperature.On a fall in space temperature, the reheat coil shall operate as described below.

6. Reheat coil operation: The heat pump plant glycol diverting valve is a two positionvalve and directs all the GR flow (GR flow on the main building glycol loop) leavingthe heat pump to the AHU’s reheat coil. The unit reheat coil control valve modulatesto maintain space temperature.

7. The DDC Controller shall modulate the OA, RA, and exhaust dampers to the

09021 & 09017


minimum OA position in the occupied mode, unless overridden by the economizer orDCV sequence.

8. Demand Control Ventilation (DCV):

a. The outdoor carbon dioxide (CO2) level shall be monitored by the BAS at alocation away from the parking lots and driveways. CO2 levels to be measuredin “PPM”.

b. Space CO2 sensors shall monitor the CO2 level in corresponding Gym spaces.The sensors shall modulate the OA damper between minimum and maximum tomaintain the CO2 level below the maximum allowable limit.

c. The maximum allowable limit shall be 500 ppm above the outdoor CO2 level.The lag/response time of the zone damper shall meet the requirements ofASHRAE standard 62-1999 (10 minutes maximum).

d. The airflow quantity and CO2 level shall be continually monitored for eachspace. The outdoor air level shall be maintained between the minimum andmaximum outdoor air levels indicated on the AHU schedule. The maximumoutdoor air level shall only be exceeded if the AHU is in the economizer mode.

e. If the AHU VFD is at a speed less than 100% and the OA is at 100% open, andthere is a call for additional ventilation, the VFD shall increase speed until theCO2 control level is satisfied.

9. Economizer Control: The OA/RA dampers shall modulate to provide enthalpy basedeconomizer cooling.

10. Provide a low temperature protection thermostat shall be installed on the leavingside of the heating coil, which shall shutdown the supply fan if any 1 foot section ofits 20 foot element detects a temperature below 37 degrees F. Connect thethermostat to the DDC Controller for indication and alarm.

11. Provide differential air pressure switches at each filter bank. Connect the output ofeach switch to the DDC Controller to alarm when filter differential pressure exceedsrecommended set point.

12. Provide differential air pressure switches at each fan. Connect the output of eachswitch to the DDC Controller to provide fan run indication. The DDC Controller shallgenerate an alarm when the fan fails to run when called for.

13. The air flow monitors for the supply and return/exhaust fans, and the outdoor airintake shall be continually monitored to record airflow quantities

G. Kitchen Grease Hood equipment: EF and MAU-1

1. Exhaust Fan

a. The exhaust fan shall be controlled by a manual wall switch.

b. The EF manufacturer shall provide a temperature sensing devices to detect arise in temperature in the hood. When the upper limit setpoint is reached, the EFshall operate regardless of the position of the manual switch. This wiring is bythe BAS installer.

09021 & 09017


c. Fan status shall be monitored.

2. Make-up Air Unit:

a. Space temperature and RH sensors are provided by the unit manufacturer. TheBAS shall set the unit to the occupied/unoccupied mode and interlock the unitwith the EF operation.

b. Unoccupied Cycle: Outside air damper is closed. Unit is off.

c. Occupied Cycle: Interlock with operation of Kitchen Hood Exhaust Fan throughthe BAS. Outside air damper is open. Unit shall provide constant volumeairflow to the space.

d. Economizer Operation: Unit integral economizer operation initiated upon a callfor first stage of mechanical cooling from the monitoring thermostat. Economizeroperation is substituted for first stage mechanical cooling when outdoor airtemperatures are suitable.

e. Cooling: The compressors are staged on to maintain the space temperaturesensor setpoint. On a rise in humidity above 65% as measured by the spacehumidity sensor, the unit cooling maintains a 55 deg. F (adjustable) leaving airtemperature off of the cooling coil. On a fall in space temperature, the heatingburner is modulated on to maintain space temperature.

f. Heating: The gas heating shall modulate to maintain the space temperaturesensor setpoint.

g. MAU discharge air temperature shall be monitored by the BAS.

h. MAU fan status and filter status shall be monitored by the BAS.

i. Interlock unit operation with Kitchen Hood Fire Suppression system, provided byothers. Upon activation of fire suppression system, MAU is ‘off’, and the relatedhood exhaust fan is ‘on’.

H. Kitchen Dishwasher Exhaust system

1. Dishwasher exhaust fan shall be controlled by a local wall switch provided andinstalled by Division 26.

2. Exhaust Fan status shall be monitored.

I. Life Skills Grease Hood EFs

1. The exhaust fans shall be controlled by a manual wall switch.

2. The EF manufacturer shall provide a temperature sensing devices to detect a rise intemperature in the hoods. When the upper limit setpoint is reached, the EF shalloperate regardless of the position of the manual switch. This wiring is by the BASinstaller

3. Fan status shall be monitored.

J. Toilet and Storage Room Exhaust fans

09021 & 09017


1. Exhaust fans shall be set to the occupied or unoccupied mode per the Owner’soccupancy schedule.

2. During occupied hours, the fans shall be “on”. During unoccupied hours, the fansshall be “off”.

3. Fan status shall be monitored for all fans.

K. Local Classroom Exhaust Fans

1. Local Classroom Exhaust Fans shall be controlled by a local wall switch providedand installed by Division 26.

2. Kiln room exhaust fan shall be controlled by a line voltage thermostat provided bythe control contractor, installed and wired by Division 26.

3. Lab fume hood fans shall be controlled by a local wall switch provided and installedby Division 26

4. Fan status shall be monitored for all fans.

L. Electric Heaters

1. Integral or remote mounted thermostats shall control the electric heaters.

M. Building Unoccupied Humidity Control

1. Space RH shall be monitored by RH sensors in the following locations in eachbuilding:

a. One second floor classroom

b. One first floor classroom

c. Open reception area in admin offices

d. Dining Area

2. During the occupied mode, the sensor shall monitor space RH, but shall not initiateany control sequence.

3. During the unoccupied mode, the sensors shall initiate a dehumidification sequencein the associated area when the space RH rises above 60% RH. The sequence shallshut down when the space RH drops to below 55% RH.

a. When the Administration dehumidification sequence is initiated, all the HPs inthe administration area shall operate in the full cooling mode until RH setpoint issatisfied.

b. When the second floor classroom dehumidification sequence is initiated, all theHPs in the second floor classrooms shall operate in the full cooling mode untilRH setpoint is satisfied.

c. When the first floor classroom dehumidification sequence is initiated, all theHPs in the first floor classrooms shall operate in the full cooling mode until RH

09021 & 09017


setpoint is satisfied.

d. When the Dining Area dehumidification sequence is initiated, all the HPs in theDining Area shall operate in the full cooling mode until RH setpoint is satisfied.

e. The single zone AHU’s are not part of this sequence.

f. The OA AHUs shall remain “off” during this sequence.

N. Computer Room A.C. Units

1. Space temperature and humidity shall be controlled by unit controls.

2. BAS shall interface with unit MODBUS connection for monitoring of unit controls.

O. Domestic Hot Water Recirculation Pumps

1. The BAS shall provide a signal to the motor starters for the two (2) domestic hotwater recirculating pumps. The BAS shall enable the pumps during occupied hoursand disable the pumps during unoocupied hours.

P. Lighting control

1. BAS shall control lighting control panel based on the School’s lighting schedule.

2. Provide all programming and interface wiring to lighting panel. Refer to electricaldrawings for number of lighting control zones.

Q. Setpoints

1. All setpoints shall be adjustable.

R. Trends

1. All points monitored by the BAS shall be able toprograms.

3.8 INPUT/OUTPUT SUMMARY

be logged into customized trending

A. GLHE Pumps

1. GS Temperature (primary) A

2. GR Temperature (primary) A

3. GS Temperature (secondary) A

4. GR Temperature (secondary) A

5. Pump On/Off (each pump) D

6. Pump Status (each pump) D

7. Piping Differential Pressure Sensor A

09021 & 09017


8. VFD Speed Modulation A (each)

9. VFD Failure Alarm D (each)

10. Separator Differential Pressure Sensor A

11. Primary flow rate (gpm) A

12. Secondary flow rate (gpm) A

B. Heat Pump (Water to Water)

1. Occupied/Unoccupied D

2. Heating / Cooling D

3. Temperature Setpoints A (each)

4. Fluid Temperature Sensors A (each)

5. Pump Start / Stop D (each pump)

6. Pump status D (each pump)



9. Isolation Valve Open/Close D

C. Heat Pump (Water to Air)


2. Space Temperature Setpoint A

3. Space Temperature Actual A

4. Isolation Valve Open/Close D

5. Discharge Air Temperature A

6. Fire Alarm Shut-down D

7. Internal HP Drain Pan Float Switch D

8. Remote Condensate pump overflow shut-down D

9. RH sensors A

10. Refer to Heat Pump Controller Specification for Additional I/O Points

D. Classroom outdoor air AHU

1. OA Temperature db (entering wheel) A

09021 & 09017


2. EA Temperature db (entering wheel) A

3. OA Temperature db (leaving wheel) A

4. EA Temperature db (leaving wheel) A

5. OA Temperature wb (entering wheel) A

6. EA Temperature wb (entering wheel) A

7. OA Temperature wb (leaving wheel) A

8. OA Temperature wb (leaving wheel) A

9. OA Temperature wb (leaving electric heater) A


11. Filter Status A (each)

12. Fan on/off D (each)



15. Duct Static Pressure A (each)

16. Fan Airflow Monitors A (each)


18. Dampers A (each)

19. Electric coil operation A

E. Single Zone AHU’s


2. Filter Status A (each)

3. Fan on/off D (each)


5. Dampers A (each)

6. Cooling coil valve operation A

7. Heating coil valve operation A

8. Reheat coil valve operation A

9. AHU discharge air temperature A

09021 & 09017


10. Space RH Level Setpoint D

11. Space RH Level Actual D

12. Outdoor CO2 Level A

13. Space CO2 Level Setpoint A

14. Space CO2 Level Actual A

15. Damper Modulation A (each)

F. Toilet and Storage Room Exhaust fans

1. Fan on/off D

2. Fan Status D

G. Local Exhaust fans

1. Fan Status D

H. Computer Room Unit

1. Status MODBUS Interface

I. Domestic Hot Water Recirculating Pumps

1. Pump enable/disable D (each pump)

2. Alarm D (each pump)

J. Lighting Control

1. Zone on/off D (each zone)

3.9 LEED MEASUREMENT AND VERIFICATION

A. The control system shall provide necessary controls interfaced with the BAS to meet therequirements of the LEED Measurement and Verification credit.

B. The BAS shall provide reports and trends for the monitoring of the energy use of thesystems described below. System shall be programmed to provide these trendsautomatically each month in a program usable by common programs such as MicrosoftExcel or Word. The format of the report shall be determined with the Engineer to providethe information required by the LEED M and V Credit.

1. Trends and data shall include total consumption data over specified time periods,peak load data at given points in time to compare system operation with systemdemands.

C. In addition to the control devices previously specified, provide the following:

1. Electrical consumption and demand metering for the following equipment. Providecurrent meters at the electrical feeders to the equipment to measure electrical

09021 & 09017


consumption and peak demand.

a. Primary GLHE Pumps

b. Secondary GLHE Pumps

c. Electric heating coils for AHU’s with Energy Recovery Wheels

d. Water to water heat pumps for AHU heating and cooling systems

2. Domestic water metering

a. Domestic water meter with BAS digital readout shall be provided and installedby Division 22 on the domestic HW main to record the building HWconsumption. Provide the wiring for the BAS interface and programming of theBAS.

END OF SECTION

09021 & 09017
