Product VVT® (Variable Volume and Data …dms.hvacpartners.com/docs/1005/public/03/33zc-1pd.pdf3 Terminal control Bypass controller (33ZCBC-01) — The VVT bypass controller is a

Copyright 2004 Carrier Corporation Form 33ZC-1PD

The VVT zoning system provides thefollowing features and benefits:• New, easy-to-use System Pilot

interface• Flexible architecture• Simplified installation and

commissioning

Features/BenefitsThe VVT zoning systemprovides an effective balancebetween flexible zone comfort,diverse system applicationrequirements, and efficienthigh-performance unitoperation.

User interfaceThe VVT zoning system is designed to allow a service person or building own-er to configure and operate the VVT bypass controller and zone controllers, linkage compatible air source and all other networked devices through the System Pilot user interface. The Sys-tem Pilot’s backlit, alphanumeric Liq-uid Crystal Display (LCD) and rotary knob design allow the user to navigate through the menus, select desired op-tions and modify data with ease. All VVT zoning system maintenance, con-figuration, setup and diagnostic infor-mation is available through the Level II communications port to allow data ac-cess by the System Pilot or an attached computer running Network Service Tool or ComfortVIEWTM software.

Flexibility for every applicationThe VVT zoning system maintains pre-cise temperature control in the space by regulating the flow of conditioned

VVT® (Variable Volume andTemperature) Zoning System

3V™ Control System

ProductData

2

air into the space using Carrier’s VVT® Zone and Bypass Controllers. Buildings with diverse loading condi-tions can be supported by controlling reheat applications, including two-posi-tion hot water, modulating hot water, up to 3-stage electric heat or combina-tion baseboard and ducted heat.

Carrier’s VVT zoning system offers zone level flexibility with its expanded range of compatible zone sensors. Now select the zone level of control re-quired for every application. Carrier’s sensor offering includes simple space temperature sensors up to full network compatible devices.

Carrier Linkage System compatibilityWhen linked to a Carrier Linkage Sys-tem, the VVT zoning system compo-nents provide numerous features and benefits such as weighted average de-mand for system operation, reference

zone temperature and set points, set point averaging, global set point sched-ule, and occupancy scheduling.

Additional control featuresThe VVT zoning system components provide additional control features such as Occupied/Unoccupied scheduling initialized via the network. The VVT zone controller offers override invoked from a wall sensor during unoccupied hours from 1 to 1440 minutes in 1-minute increments. Optional De-mand Controlled Ventilation (DCV) control or relative humidity monitoring are also available.

Simple actuator connectionThe VVT zone controller control as-sembly contains an integral actuator assembly that is field mounted to the VVT terminal damper shaft, similar to the mounting of a standard actuator. The actuator is rated at 35 lb-in.

(3.95 N-m) torque, a 45, 60, or 90-degree stroke, and provides90-second nominal timing at 60 Hz. The actuator is suitable for mounting onto a 3/8-in. (9.5 mm) square or round VVT box damper shaft, or onto a 1/2-in. (13 mm) round damper shaft. The minimum VVT box damper shaft length is 13/4-in. (45 mm). The VVT zone controller is designed for vertical or horizontal mounting.

Ease of installationThe VVT zoning system components are provided with removable connec-tors for power, communications, and damper output. Non-removable screw type connectors are used for inputs. The VVT zone controller also provides an RJ-14 modular phone jack for the Network Service tool connection to the module via the Carrier communicating network.

Table of contentsFeatures/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2VVT System Key Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,4Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14Guide Specifications — 3V Control System . . . . . . . . . . . . . . . . . . . . . 15-22

→

→

105

3

Terminal controlBypass controller (33ZCBC-01) — The VVT bypasscontroller is a component of Carrier’s 3V™ control systemand is used to regulate the supply duct static pressure forVariable Volume and Temperature Applications. Thebypass Controller is an essential system component thatallows constant volume HVAC equipment to provide zonelevel temperature control.VVT zone controller (33ZCVVTZC-01) — The VVTZone Controller is a component of Carrier’s 3V controlsystem and is used to provide zone level temperature andair quality control for Variable Volume and TemperatureApplications. The VVT zone controller is a pressure de-pendent device that maintains space temperature by mod-ulating the amount of supply airflow through its primarydamper. An integrated 35 in.-lb actuator is standard on allVVT zone controllers.

VVT zone controllers are available factory mounted toCarrier’s round and rectangular dampers. Round dampersare available in 6, 8, 10, 12, 14, and 16-in. sizes. Rectan-gular dampers are available in 8x10, 8x14, 8x18, and8x24-in. sizes. All damper assemblies are equipped with anintegrated duct temperature sensor.

Zone controllers are available for field retrofit applications.VAV zone controller (33ZCVAVTRM, 33ZCFANTRM) —Carrier’s 3V control system provides seamless integrationof pressure independent zones for use with VVT systems.Simply use Carrier’s family of VAV zone controllers(ComfortID™) to regulate the flow of conditioned air intothe space. The VAV zone controllers provide dedicatedcontrol functions for single duct terminals with modulatingheat (up to 2-stages of heat), series fan or parallel fan pow-ered terminals, or as a primary controller for dual duct orzone pressurization applications. Refer to Carrier’s Com-fortID literature for additional information.

Linkage compatible unit controls and auxiliary controlsCarrier’s 3V control system provides optimized equipmentcontrol through airside linkage. Linkage allows the airsource to adjust its supply air temperature set points andoccupancy schedules to run in the most efficient manner.The 3V control system linkage compatible controllersinclude ComfortLink™, PremierLink™ and the UniversalController.ComfortLink™ controls — The factory-integrated con-trols are available on Carrier’s 2 to 25 ton Centurionrooftop product line. The ComfortLink controller is acomponent of Carrier’s 3V system and provides: optimumperformance of the rooftop’s refrigeration circuits, aneasy to read English scrolling marquee display and userinterface, and unparalleled diagnostic information withfactory-mounted sensors.PremierLink™ control (33CSPREMLK) — ThePremierLink communicating controller is available as a fac-tory-installed option on 3 to 25 ton rooftop units and as afield-installed accessory. The control is DCV (DemandControlled Ventilation) compatible and internet ready.

Universal controller (33UNIVCTRL-01) — The Uni-versal Controller provides auxiliary building control tointerface with lighting, fans, pumps and other HVACequipment in a stand-alone or Carrier-networked environ-ment using closed-loop, direct digital controls. The Univer-sal Controller’s pre-engineered algorithms provide simplebuilding integration for small-to-medium commercialapplications with 16 field point capability (8 inputs and8 outputs).

Interface devicesSystem Pilot (33PILOT-01) — The System Pilot is acomponent of Carrier’s 3V control system and serves asthe user-interface and configuration tool for all Carriercommunicating devices. The System Pilot can be used toinstall and commission a 3V zoning system, linkage com-patible air source, universal controller and all other devicesoperating on the Carrier communicating network.ComfortVIEW™ software (CEPL130548-01) —ComfortVIEW software can be installed on a PC and isused to configure and monitor the 3V system.Remote monitoring capability device(33CSCCNWEB-01) — The remote monitoring deviceinstalls on the Carrier network and provides a connectionfor a phone line or ethernet connection, allowing the userto view and change information using a standard webbrowser. The user will also have access to the point dis-plays, set point schedules, and operating schedules.

Field-installed accessoriesOption board (33ZCOPTBRD-01) — Carrier’s option-al relay board may be used with VVT zone controllers toprovide control functions for heat and fan air terminals.Heating capabilities include modulating heat, up to 3 stag-es of ducted heat or combination baseboard and ductedheat control.Mounting kit — Mounting kits are used to field install theVVT zone controllers onto Carrier 33CS dampers. Mount-ing kits come in packages of 10. The 33ZCMBRC-01 kit isused when mounting on rectangular dampers. The33ZCMBRD-01 kit is used when mounting on rounddampers.

SensorsOutdoor-air sensor (HH79NZ039) — The outdoor-airsensor reads temperatures between 0° and 150 F and isused to report the outdoor-air temperature to the commu-nication bus. The information can be used to lock out heat-ing or cooling modes when the temperature is not withinuser-configured limits. The outdoor-air sensor is neededwhen an economizer is used.Supply air temperature sensor (33ZCSENSAT) —The supply air temperature sensor is required for heatingapplications or stand-alone operation. The sensor has anoperating range of –40 to 245 F (–40 to 118 C) and in-cludes a 6-in. stainless steel probe and cable.Duct temperature sensor (33ZCSENDAT) — Theduct temperature sensor is required for use with a bypasscontroller and must be installed in the supply air duct.

VVT® system key components

105

→

→

→

4

For bypass systems, the duct temperature sensor shouldbe moved to a location which will provide the best sensingof the supply-air temperature during heating and cooling.

For bypass systems, the duct temperature sensor shouldbe located in the main supply duct downstream of the dis-charge of the air source and before the bypass damper toallow good mixing of the supply airstream.Primary air temperature sensor — The primary airtemperature (PAT) sensor (part number 33ZCSENPAT) isused on a zone controller which is functioning as a LinkageCoordinator for a non-communicating or Linkage compat-ible air source.Space temperature sensor — A space temperature(SPT) sensor must be installed for each zone controller.There are 3 types of SPT sensors available from Carrier:the 33ZCT55SPT space temperature sensor withtimed override button, the 33ZCT56SPT space tempera-ture sensor with timed override button and set point adjust-ment, and the 33ZCT59SPT space temperature sensorwith timed push button override button, set point adjust-ment and digital readout display.

The space temperature sensor is used to measure thebuilding interior temperature and should be located on aninterior building wall.Demand Controlled Ventilation sensor (CO2) — Anindoor air quality sensor is required for optionalDemand Controlled Ventilation. The 33ZCT55CO2 and33ZCT56CO2 CO2 sensors are indoor, wall-mounted sen-sors without display.NOTE: The relative humidity sensor and CO2 sensor can-not be used on the same zone controller.Humidity sensors — The relative humidity sensor is re-quired for zone humidity control (dehumidification) forpressure independent zones only. The indoor wall-mounted relative humidity sensor (33ZCSENSRH-01) orduct mounted relative humidity sensor (33ZCSENDRH-01)can be used.NOTE: The relative humidity sensor and CO2 sensor can-not be used on the same zone controller.

VVT® system key components (cont)

105

→

5

Dimensions

BYPASS CONTROLLER

VVT ZONE CONTROLLER(PRESSURE DEPENDENT)

→

→

105

6

Dimensions (cont)

6-in.

3 1/2-in.

(152 mm)

(89 mm)

SYSTEM PILOT

PREMIERLINK™ COMMUNICATING CONTROLLER

→

→

105

7

CE

B

D

A

RECTANGULAR DAMPERS WITH VVT ZONE CONTROLLER

DIMENSIONS (Inches)

PARTNUMBER A B C D E

33ZCD1008ZC-01 101/4 131/4 8 10 131/233ZCD1408ZC-01 101/4 171/4 8 14 131/233ZCD1808ZC-01 101/4 211/4 8 18 131/233ZCD2408ZC-01 101/4 271/4 8 24 131/2

PARTNUMBER

DUCT SIZE(in.)

WEIGHT(lb)

CFM AIRFLOW RANGEMin Max

33ZCD1008ZC-01 8 x 10 10.0 410 61033ZCD1408ZC-01 8 x 14 11.5 560 82533ZCD1808ZC-01 8 x 18 13.0 725 107533ZCD2408ZC-01 8 x 24 16.0 925 1175

CA

B

ROUND DAMPERS WITH VVT ZONE CONTROLLER

DIMENSIONS (Inches)

PARTNUMBER A B C

33ZCDR06ZC-01 6 18 9.033ZCDR08ZC-01 8 18 11.033ZCDR10ZC-01 10 18 13.033ZCDR12ZC-01 12 24 15.033ZCDR14ZC-01 14 24 17.033ZCDR16ZC-01 16 24 19.0

PARTNUMBER

DUCTDIAMETER

(in.)

WEIGHT(lb)

CFM AIRFLOW RANGE

Min Max

33ZCDR06ZC-01 6 7.0 160 24033ZCDR08ZC-01 8 9.0 280 42033ZCDR10ZC-01 10 10.5 440 66033ZCDR12ZC-01 12 14.0 630 95033ZCDR14ZC-01 14 16.0 850 127533ZCDR16ZC-01 16 17.5 1125 1575

→

→

105

8

APPLICATION NC* LEVELS (RADIATED SOUND) — ROUND ZONE DAMPERS

Exceeds recommended NC.*Noise Criteria.NOTE: The NC values are based on ARI (Air Conditioning and Refrigeration Institute) Standard 885-90 application assumptions.

DAMPER CFM STATIC PRESSURE(in. wg) NC LEVEL

33ZCDR06ZC-01

1600.02 <200.52 <201.00 25

2000.04 <200.50 221.00 24

2400.06 <200.50 241.00 28

3600.10 280.50 321.00 35

33ZCDR08ZC-01

2800.03 <200.50 <201.00 22

3500.04 <200.50 221.00 22

4200.06 250.50 251.00 27

6300.10 280.50 281.00 30

33ZCDR10ZC-01

4400.01 220.50 251.00 27

5140.02 220.50 281.00 29

5840.03 250.50 271.00 32

6590.04 300.50 321.00 34

9900.09 350.50 351.00 37

33ZCDR12ZC-01

6300.01 220.50 351.00 38

7000.03 220.50 371.00 38

7700.02 220.50 381.00 39

8600.04 270.50 391.00 40

9500.05 320.50 401.00 40

14250.11 400.50 441.00 45

Performance data

105

→

9

APPLICATION NC* LEVELS (RADIATED SOUND) — ROUND ZONE DAMPERS (cont)



33ZCDR14ZC-01

8520.02 220.50 301.00 35

9760.01 250.50 321.00 36

10740.01 300.50 321.00 27

11750.01 300.50 351.00 38

12750.06 300.50 361.00 39

19100.13 410.50 451.00 47

33ZCDR16ZC-01

11250.02 270.50 391.00 41

11750.04 300.50 391.00 41

12750.05 310.50 401.00 42

13760.05 350.50 411.00 44

14750.06 350.50 421.00 45

15740.07 360.50 441.00 46

16760.03 380.50 451.00 46

25120.18 500.50 511.00 54

105

→

10

APPLICATION NC* LEVELS (RADIATED SOUND) — RECTANGULAR ZONE DAMPERS



33ZCD1008ZC-01

4100.01 <200.50 301.00 45

5090.03 <200.50 301.00 40

6100.07 230.50 311.00 40

9140.16 350.50 371.00 45

33ZCD1408ZC-01

5610.02 <200.50 361.00 47

6250.02 220.50 371.00 45

7250.03 250.50 381.00 45

8250.05 320.50 401.00 46

12370.11 400.50 451.00 54

33ZCD1808ZC-01

7250.01 220.50 381.00 48

7750.01 220.50 381.00 48

8740.02 280.50 401.00 48

9740.02 300.50 421.00 48

10750.03 330.50 441.00 50

16110.06 400.50 501.00 60

33ZCD2408ZC-01

9250.01 260.50 381.00 48

9740.01 270.50 381.00 50

10750.01 320.50 401.00 50

11750.02 350.50 411.00 50

12750.02 370.50 431.00 50

13750.03 380.50 441.00 50

20620.06 470.50 501.00 55

Performance data (cont)

105

→

11

Typical VVT® system overviewThe VVT system is a control system designed to providemultiple zones of temperature control using a single,constant volume heating and cooling packaged unit. Tradi-tionally, the VVT system has been primarily a pressure

dependant system that adjusts damper position based onspace temperature variation from set point.

Typical VVT applications include medical and dentaloffices, 1 to 3 story commercial buildings, and strip malland retail stores.

TYPICAL VVT SYSTEMPRESSURE DEPENDENT CONTROL ONLY

LEGEND

REQUIRED COMPONENTS OPTIONAL COMPONENTSDevices Part Number Usage Devices Part Number Usage

VVT Zone Controller 33ZCVVTZC-01 1 per pressuredependent zone

PremierLink™Controller 33CSPREMLK 1 required per system if non-

communicating air source.

Bypass Controller 33ZCBC-01 1 per system Supply AirTemp Sensor 33ZCSENSAT 1 required for bypass

Option for zones

System Pilot 33PILOT-01 1 per system on com bus.Optional for space sensors CO2 Sensors 33ZCT55CO2

33ZCT56CO2 as required per zone for DCV

Space Sensor33ZCT55SPT33ZCT56SPT33ZCT59SPT

1 per zone Relative HumiditySensor

33ZCSENSRH-0133ZCSENDRH-01

Optional to Monitor RHonly (if no DCV sensor).

Primary Air Temp Sensor 33ZCSENPAT 1 per LinkageCoordinator

Outside Air TempSensor HH79NZ039 Required with field-installed

PremierLink control

DCV — Demand Controlled VentilationRH — Relative Humidity

Application data

Communication Bus20/3/Shielded cable(See Notes 1,2)

System Pilot(See Note 6)

Bypass VVT LinkageCoordinator(See Note 3)

(Optionalfor Linkage

Coordinator)

VVT Zone

20/3/Shielded Cable(See Note 2)

VVT Zone

T55/56 T55/56 T55/56CO2/T55/56(Optional for DCV)See Note 2,4)

32 zones maxincluding LinkageCoordinator

24vac40va

24vac40va

24vac40va

24vac40va

Primary AirSensor

(See Note 5)

24vac40va(See Note 2)

Duct Sensor(Located in main supply duct)

(See Note 2)20/2/Shielded cable

Carrier Communicating RTU Supply AirSensor

(Use PremierLink Retrofit Control for non Carrier communicating RTU)

Comm Bus Comm Bus

120 vac

LEGEND

NOTES:1. 239 devices maximum per bus. Repeater required every 1000 ft or 60 devices. Maximum of 3 repeaters per bus.2. Communication bus and sensor wiring MUST be separate from AC power wiring.3. Up to 32 total zones per system. Maximum of 8 Linkage Coordinators with a total of 128 devices per single bus.4. Combination CO2/T55/T56 sensor may be used in place of T55/T56/T59 on any zone requiring DCV. RTU must be capable of controlling

economizer for DCV conditions.5. Locate PAT in supply air duct from air source unit.6. System Pilot can share power with Bypass Controller or VVT Zone Controller.

CCN — Carrier Comfort NetworkDCV — Demand Controlled VentilationPAT — Primary Air Temperature SensorRTU — Rooftop UnitVVT — Variable Volume and Temperature

VVT PRESSURE DEPENDENT SYSTEM→

105

12

VVT® pressure dependent and independent system overviewIn many applications VVT Systems require both pressuredependent and independent zone control. With 3V™

control system both forms of control are available. Simplyuse Carrier’s VAV Zone Controller, to provide pressure in-dependent control for critical airflow zones.

VVT PRESSURE DEPENDENT AND INDEPENDENT SYSTEM

LEGEND



PremierLink™Controller 33CSPREMLK

1 required per system ifnon-communicating airsource.

VAV Zone Controller(ComfortID) 33ZCVAVTRM 1 per pressure

independent zone Supply Air Temp Sensor 33ZCSENSAT 1 required for bypassOption for zones

Bypass Controller 33ZCBC-01 1 per system CO2 Sensors 33ZCT55CO233ZCT56CO2

as required per zone forDCV

System Pilot 33PILOT-01

1 per system oncom bus.Optional for spacesensors

Relative Humidity Sensor 33ZCSENSRH-0133ZCSENDRH-01

Optional to Monitor RH only(if no DCV sensor).


1 per zone Outside Air Temp Sensor HH79NZ039 Required with field-installedPremierLink control


DCV — Demand Controlled Ventilation

Application data (cont)



Bypass VVT LinkageCoordinator(See Note 3)

VVT Zone

20/3/Shielded cable(See Note 2)

T55/56T55/56 T55/56CO2/T55/56(Optional for DCV)See Note 2,4)


24vac40va

24vac40va

24vac40va

120 vac

24vac40va

Primary AirSensor

(See Note 5)




Carrier Communicating RTU Supply AirSensor


ComfortID Zone

Comm Bus Comm Bus

(Optional for LinkageCoordinator)

LEGEND


economizer for DCV conditions.5. Locate PAT in supply air duct from air source unit.6. System Pilot can share power with Bypass Controller or VVT Zone Controller.


VVT PRESSURE DEPENDENT AND INDEPENDENT SYSTEM→

105

13

Fan powered and reheat VVT® system overviewAdding supplemental heat and fan-powered terminals hasnever been simpler than with 3V™ control system. Simplyadd a stackable option board to any VVT zone controller

and your system is ready. New reheat flexibility offersfloating-point control for hot water valves and combination2-position baseboard with ducted staged heat.

FAN POWERED AND REHEAT VVT SYSTEMSPRESSURE DEPENDENT AND INDEPENDENT CONTROL CAPABILITY

LEGEND



PremierLink™Controller 33CSPREMLK 1 required per system if non-

communicating air source.

VAV Zone Controller(ComfortID) 33ZCFANTRM

1 per pressureindependent zonewith fan or reheat

Supply AirTemp Sensor 33ZCSENSAT 1 required for bypass

Option for zones

Bypass Controller 33ZCBC-01 1 per system CO2 Sensors 33ZCT55CO233ZCT56CO2 as required per zone for DCV

System Pilot 33PILOT-01 1 per system on com bus.Optional for space sensors

Relative HumiditySensor

33ZCSENSRH-0133ZCSENDRH-01

Optional to Monitor RH only(if no DCV sensor).


1 per zone Strap-on PipeTemp Sensor 33ZCSENCHG Optional if baseboard heat ONLY.

(Not required with zone ducted heat)


Outside AirTemp Sensor HH79NZ039 Required with field-installed

PremierLink control

Fan/Reheat Option Board 33ZCOPTBRD-011 required perVVT Zonewith Reheat

DCV — Demand Controlled VentilationPD — Pressure DependentRH — Relative Humidity



Bypass VVT LinkageCoordinator w/Modulating HW(See Note 3,7)

(Optionalfor Linkage

Coordinator)

VVT Zone w/2Position HWBaseboard Heat(See Note 7)

20/3/Shielded Cable(See Note 2)

ComfortID Zonew/Series FP and2 Stage Electric Heat(See Note 7)

T55/56 T55/56 T55/56CO2/T55/56(Optional for DCV)See Note 2,4)


24vac40va

24vac40va

24vac40va

120 vac

24vac40va

Primary AirSensor

(See Note 5)




Carrier Communicating RTUSupply AirSensor


H

C

21

(See Note 6)

Supply AirSensor

Pipe Sensor

OptBrd

OptBrd

Comm Bus Comm Bus

LEGEND


economizer for DCV conditions.5. Locate PAT in supply air duct from air source unit.6. Locate downstream of ducted reheat.7. Option Board required for all VVT zones with heat and/or fan powered mixing box.8. System Pilot can share power with Bypass Controller or VVT Zone Controller.


VVT PRESSURE DEPENDENT/PRESSURE INDEPENDENT WITHFAN POWERED ZONES AND/OR REHEAT SYSTEM

→

105

14

Compatibility of Carrier systemsThe following chart shows the compatibility of Carrier’s3V™ Control System and GEN-III VVT® products.VVT Gen II conversion (manufactured prior to July1995) — There is no compatibility between VVT Gen IIsystems and 3V control systems. A complete change ofsystem components is required with the exception ofphysical dampers which may remain in place. The existing

5-wire control wiring from the thermostat to the dampermay be used for the System Pilot communication wire orfor a T55, T56, or T59 space sensor. The wiring must be18 to 20 AWG (American Wire Gage) stranded, shieldedcable and conform to 3V control system and Carrier com-municating network wiring guidelines. Any wiring thatdoes not conform to these guidelines must be replaced.

3V AND GEN-III VVT PRODUCT COMPATIBILITY CHART

LEGEND

*A Gen-III VVT Monitor will scan new 3V zones. No special configuration isrequired. Address 3V zone within the Gen-III Monitor’s scanning range. Ifthe Gen-III VVT monitor needs replacement and components are notavailable, 3V zone controller(s) may be substituted for all zones with com-patible sensors. Existing damper may be re-used, but with new 3V actua-tor(s).

†An Integrated Gen-III Bypass Controller and damper may remain in 3Vsystem, but must be re-addressed out of the 3V system’s scanning range,and must be configured for Standalone operation. If the Gen-III Bypass

Controller needs replacement and components are not available, 3Vbypass controller may be substituted with compatible sensors. Existingdamper may be re-used, but with new 3V actuator.

**A Gen-III Pressure Dependent Zone Controller is not compatible in 3Vsystem. However, a 3V zone controller is compatible in a Gen-III system.If the Gen-III Zone Controller needs replacement and components are notavailable, 3V zone controller may be substituted with compatible sensors.Existing damper may be re-used, but with new 3V actuator.

††A Gen-III Pressure Independent Zone Controller is not compatible with 3Vsystems. If the Gen-III PI Zone Controller needs replacement and compo-nents are not available, ComfortID controller may be substituted whenconfigured for Standalone only out of Gen-III Monitors scanning range,and with compatible sensors. Existing damper may be re-used, but withnew ComfortID actuator.

GEN III PRODUCT DESCRIPTION COMPATIBLE FOR USEWITH 3V CONTROL SYSTEM

TEMP SYSTEMSWorking Gen-III TEMP systems may reside on same bus with a 3V control system. If an existing Gen-III TEMP system needs component replacement,refer to the components below.

33CSTM(T)-01 TEMP Monitor No. Replace with PremierLink™ control33CSUCE-06 TEMP System Relay Pack No. Replace with PremierLink control

VVT GEN-III SYSTEM COMPONENTSWorking Gen-III VVT systems may reside on same bus with a 3V control system. If an existing Gen-III system needs component replacement,refer to the components below.

33CSVM(T)-32 VVT Monitor Thermostats Yes for a 3V Zone(s)*33CSBC-00 Bypass Controllers Yes. †33CSZC-01 Pressure Dependent Zone Controller No. Use 33ZCVVTZC-01.**33CSZC-PI Pressure Independent Zone Controller No. Use 33ZCVAVTRM-01.††

DAMPERS33CSDCDR Round or Rectangular Yes – sheet metal only

33CASDCARPL, M08 Damper Actuators No33CSDCA060,090 High Torque Damper Actuators No

RELAY PACKS33CSZRP-06 Universal Damper Relay Pack No33CSUCE-06 Monitor-only Relay Pack No

SENSORS920238 (HS) Humidity Sensor No, 3V system uses 2 to 10 vdc humidity sensor.

920247 (RAS) Refrigerated Air (DX) Sensor No. 3V system uses standard 10K sensors.920076 (RDS) Remote Duct Sensor No. 3V system uses standard 10K sensors.920077 (RDS) Remote Room Sensor No. 3V system uses standard 10K sensors.920089 (OAS) Outside Air Sensor No. 3V system uses standard 10K sensors.

33CSPS-01Pressure Sensor No, 3V static pressure sensor is integrated into Bypass

Controller. For PI zones, velocity pressure sensor isintegrated into the VAV (ComfortID™) controller.

33CSPS-02Pressure Sensor No, 3V static pressure sensor is integrated into Bypass

Controller. For PI zones, velocity pressure sensor isintegrated into the VAV (ComfortID) controller.

33ZCSENCO2 CO2 Sensor Yes — vdc typeEXISTING WIRING

Non-Shielded device, bus or sensor wiring NoShielded device, bus or sensor wiring Yes24 VAC power wiring Yes

DX — Direct ExpansionPI — Pressure IndependentVVT — Variable Volume/Variable Temperature

Application data (cont)

105

→

15

Variable Volume/Variable Temperature (VVT®) Multiple Zone HVAC Control SystemModel Number:

33ZCVVTZC-01 Zone Controller33ZCBC-01 Bypass Controller33PILOT-01 System Pilot

Part 1 — General1.01 SYSTEM DESCRIPTION

The 3V™ control system shall consist of program-mable, multiple communicating Zone Controllers;and a Bypass Controller. The system shall alsoinclude a complete array of input and outputdevices. The system shall provide full control ofHVAC heating and cooling equipment in a multiplezone application. The 3V system shall be capable ofoperating as a stand-alone system or networked withmultiple systems connected on a communicationsbus to communicating air source controllers.

1.02 DELIVERY, STORAGE AND HANDLINGThe products shall be stored and handled per manu-facturer’s recommendations.

Part 2 — Products2.01 EQUIPMENT

A. General:The control system shall be available as a completepackage with the required input sensors and devicesreadily available. The system shall be capable of pro-viding complete control of HVAC functions; variableair zone control, bypass air control in both pressuredependent and pressure independent applications.Airside controls shall be capable of operating 3V sys-tem dampers as well as VAV (variable air volume) ter-minal boxes and Fan Powered terminal boxes withand without supplemental heat sources at the zone.All temperature sensors shall be capable of being readand displayed in 0.1° F increments. Controllers shallsupport either a local dedicated or remote SystemPilot capable of displaying sensor and input informa-tion applicable to the controller in degrees Fahrenheitor Celsius. The System Pilot shall be capable of dis-playing the following information as a minimum:System Pilot Linkage Coordinator Zone Con-troller Display:

1. Space Temperature2. Primary Air Temperature3. Damper Position Desired4. Damper Position Actual5. Cfm (Pressure Independent Controllers Only)6. Average Temperature from multiple remote

Room Sensor(s)7. Zone Indoor Relative Humidity8. Zone Indoor CO2 concentration9. Zone Supply Air Temperature

10. Outside Air Temperature11. Air Source Mode

System Pilot Zone Controller Display: 1. Space Temperature

2. Damper Position Desired3. Damper Position Actual4. Cfm (Pressure Independent Controllers Only)5. Average Temperature from multiple remote

Room Sensor(s)6. Zone Indoor Relative Humidity7. Zone Indoor CO2 concentration8. Zone Supply Air Temperature9. Outside Air Temperature

10. Air Source ModeSystem Pilot Bypass Controller Display: 1. System Pressure in hundredths of an inch

2. System Pressure Set Point3. Damper Position Desired4. Damper Position Actual5. Air Source Supply Air Temperature6. Air Source Mode 7. All applicable sensors shall be accessed for cali-

bration at the controller display.B. Rooftop Controller Interface:

The VVT zone controller shall be capable of zonedemand data coordination with a communicatingrooftop. Set point and temperature informationfrom the zones shall be shared with the rooftop con-troller so that the rooftop controllers error reductioncalculations can determine the proper number ofheating or cooling stages to operate in order to bal-ance the system load.

C. Memory and Timeclock:The system shall not require the use of batteries forany data storage. The VVT zone controller andBypass Controller shall have a Non-Volatile Memoryproviding indefinite storage of configuration data.The VVT zone controller shall have a 365-day soft-ware clock with built in daylight savings time andleap year adjustment. In the event of power failure,the timeclock may be automatically updated withcurrent time and date from a network Time Syncdevice. The network time sync device shall updateall software and Hardware clocks on the communi-cations network twice a day. The System Pilot shallbe capable of sharing time information with other3V system controls or any other General PurposeElectronic Controller existing on the communica-tions bus with timeclock capabilities. The VVT zonecontroller shall also have the capability of changingoccupancy mode by reading a set of discrete, drycontacts controlled by an external timeclock.

D. Set Points:1. The VVT zone controller shall utilize and store

the following set points:a. Occupied Heating Set Point

Guide specifications — 3V™ control system

16

b. Occupied Cooling Set Pointc. Unoccupied Heating Set Pointd. Unoccupied Cooling Set Pointe. Ventilation CO2 Set Point

2. The Linkage Coordinator shall utilize and storethese additional set points:a. Space Temperature Occupied Hysteresisb. Unoccupied Space Temperature Low Limitc. Unoccupied Space temperature High Limitd. Heating OAT Lockout Set Pointe. Cooling OAT Lockout Set Point

3. VAV Zone Controllers with the pressure inde-pendent control feature shall utilize and storethese additional set points:a. Heat Minimum Airflow Set Pointb. Heat Maximum Airflow Set Pointc. Cool Minimum Airflow Set Pointd. Cool Maximum Airflow Set Pointe. Reheat Airflow Set Point

4. Bypass Controllers shall utilize and store theseset points:a. System Pressure Set Pointb. Heat Leaving Air Temperature Limitc. Cool Leaving Air Temperature Limitd. Leaving Air Temperature Pressure Delta

5. All set points shall be capable of being modifiedat the controller display or through a communi-cation network with a System Pilot or PC andEMS (Energy Management System) software.

E. Scheduling:The system shall be capable of operating in an occu-pied or unoccupied mode with up to 8 periodchanges per day including holidays. All 3V™ zonecontrollers shall have the capability to follow inde-pendent local schedules or receive the schedule fromother Application specific controllers as well as allGeneral Purpose Electronic Controllers (GPECs)existing on the communications bus with schedulingcapabilities. All schedules shall be adjustable in one-minute increments.The VVT® zone controller shall be capable of utiliz-ing up to 16 holiday schedules with up to 99 daysper schedule for overriding the occupancy schedule.The VVT zone controller shall have built-in overridecapabilities for unoccupied schedule override from 0to 24 hours in 1-minute increments. Schedule over-rides and schedules shall be flexible enough to allowindividual zones to become occupied without therest of the system becoming occupied or allow someor all zones of an associated piece of equipment, orfrom several pieces of equipment to become occu-pied together. When scheduled to become occupiedtogether, all zones from that group should partici-pate in a single occupancy override from any single

request. When scheduled to operate independentlyonly the zone where the Occupancy override wasrequested should become occupied.

F. Security Level:The System Pilot(s) shall have four levels of securityfor access of control tasks and decisions with levelone providing full access and level four providingread access only from the controller. Levels two andthree provide limited access.

G. HVAC Equipment Protection:The air sources controller shall be capable of moni-toring the leaving air temperature to control stagesin both the heating and cooling modes. It shall havethe capability to shut down stages based on a rise orfall in leaving air temperature above or below adjust-able or calculated values. Calculated supply air tem-perature requirements shall be based on errorreduction calculations from reference zone data todetermine the optimum supply air temperature tosatisfy space requirements. The system and shallprovide protection from short cycling of heating andcooling by utilizing time guards and minimum runtime configurations.

H. Sensor Calibration:All applicable sensors shall be accessed for calibra-tion at the controller or through a communicatingnetwork with a System Pilot device or PC and EMSsoftware.

I. Energy Conservation:The system shall incorporate the following featuresfor the provision of energy conservation:

1. Load balancing from error reduction calcula-tions that optimize staging.

2. The locking out of mechanical heating or cool-ing modes based on configurable outside airtemperature limits.

3. The system shall intelligently start all equipmentin a stagger start manner after a transition fromunoccupied to occupied modes as well as powerfailure to reduce high peak power consumptionon start-up.

4. 3V controllers shall have the capability of beingoverridden by a Peak Demand Limiting OptionModule existing on the communications buswith demand limiting functions to reduce overallenergy consumption and control on and offpeak time kW usage.

5. Temperature compensated start. The zone con-troller shall be capable of supporting tempera-ture compensated start with the air source.Prior to occupancy the zone controllers and AirSource shall work together to provide zone-by-zone temperature compensated conditioning.The air source will track the time required forrecovery report the optimal start bias time tothe zones prior to each occupied period so that

Guide specifications — 3V™ control system(cont)

17

the zone can start conditioning the space priorto occupancy.

J. Stand-Alone Capability:The controllers shall be capable of providing all con-trol functions of the HVAC system without the useof a computer. All configuration selections shall becapable of being performed at a System Pilot dis-play via push button access.The controllers shall include the inherent capabilityto access the system control selections as well asto monitor system performance by means of a com-municating network with a PC and EMS softwareprogram.

K. DDC Control Networking:The 3V™ system controllers shall be capable ofsharing the same communication network asGeneral Purpose Electronic Modules and optionmodules.The System Pilot shall be capable of broadcastingtime and date. The air source controller shall becapable of broadcasting outside air temperature,outside air enthalpy status, or outside air CO2 con-centration on the communications bus to otherApplication Specific Controllers, and General Pur-pose Electronic Controllers existing on the network.The VVT® zone controllers shall also be able toreceive this information and more from the sametype of controllers on the network communicationsbus.The VVT zone controllers shall also be capable ofreceiving commands from General Purpose Elec-tronic Controllers (GPEC) existing on the communi-cations bus. This information shall be used in avariety of ways to control the HVAC system as wellas other building functions and applications.

L. VVT Zone Controller as a Linkage Coordinator:1. The VVT zone controller shall be capable of

controlling space demand in a variable volumeapplication by monitoring space temperatureand determining the heating or coolingdemand. The space temperatures shall be con-trolled to maintain individual heating and cool-ing setpoints. The VVT zone controller shallhave the capability of scanning up to 32 linkedzones including itself and determining systemheating and cooling requirements. Individualzones may be configured so that they do notparticipate in system mode determination forheating and cooling or just for the heating ifzone supplemental heat is installed.The zone controller shall include adjustable sys-tem mode lockouts for Cooling, Heating and aconfiguration for intermittent fan when occu-pied. These settings shall be accessible from aSystem Pilot or from a PC with EMS software.The system fan shall be capable of operating ina continuous or automatic mode during occu-pied hours and in an automatic mode duringunoccupied hours. The zone controller shall be

capable of operating the system in manual orautomatic changeover mode.

2. The zone controller shall include a heating/cooling mode temperature changeover cycle toeliminate zone thermal shock during periods ofsystem mode change.

3. The zone controller shall have a system com-missioning mode whereby the installer may eas-ily command all dampers to the maximum or alldampers to the minimum positions or positionindividual dampers. While this mode is active,maximum and minimum damper settings maybe set. The system static pressure reading maybe viewed from the same screen while perform-ing the operations above and the Bypass pres-sure set point adjusted as required. The screendata for this mode may be displayed from theSystem Pilot or from a PC with EMS software.

4. The Zone Controller shall be capable of provid-ing a communication check of all associatedcontrols and display device type as well as errorconditions.

M. VVT Zone Controller:1. The VVT zone controller shall be capable of

independent zone control.2. The zone controller shall operate all 3V

VVT zone dampers as well as VAV and fanpowered terminal boxes equipped with VVTzone controllers.

3. The zone controller shall be capable of control-ling supplemental heat or auxiliary heatsources, including fan control, when required atthe zone level. Conversion to supplementalheat shall not require replacement of the con-trol system.

4. The zone controller shall operate in a pressuredependent mode. Damper inlet area shall beadjustable in increments of one square inch.The zone controller shall be capable of readingzone airflow in cfm and controlling zone airflowbased upon this information when operating inpressure independent mode.

5. The zone controller shall have the capability tosupport adjustable minimum and maximumdamper positions.

N. 3V Bypass Controller:1. The 3V bypass controller shall be capable of

reading supply static pressure and controllingthe bypass damper to maintain the supply staticset point. This operation shall be providedwhen operating within a 3V system applicationor in a stand-alone mode.

2. The bypass controller shall include a pre-positioning mode for opening the damper priorto fan operation. The bypass controller shallprovide configurable minimum and maximumdamper position settings.

18

3. The bypass controller shall have the capability ofdisplaying system static pressure, duct tempera-ture, pressure set point and damper position.

4. The bypass controller shall provide the capabil-ity of increasing the maintained supply staticpressure when the system supply-air tempera-ture exceeds adjustable high and low ducttemperature set point limits.

O. Demand Controlled Ventilation (DCV):The 3V™ zone controller shall be capable of readingan analog signal from a CO2 sensor or other sensormeasuring volatile contaminants, or relative humid-ity and provide DCV at the zone by calculating aDCV damper position and participate in systemDCV operation with the air source.

1. System DCV (System Level):The zone controller when operating as a Link-age Supervisor shall have the ability to collectthe DCV value from any or all of the zone con-trollers it is configured to scan. These valuesmay be averaged or the high or low sensorvalue may be transmitted to an air source con-troller’s analog DCV sensor input. The airsources configured DCV routine may performthe appropriate actions to reduce CO2 concen-tration at the reporting zones. If not being usedfor DCV this system composite value collectionmay be used to collect zone relative humidityreadings or another type of analog sensor val-ues to be reported to the air source.

2. Local DCV (Zone Level):All VVT® Comfort System Zone Controllersshall be capable of reading an analog signalfrom a CO2 sensor or other sensors measuringvolatile contaminants at the zone level, forindependent DCV mode operation. The zonecontroller shall calculate a DCV damper posi-tion for the zone based on an error reductioncalculation. When the DCV damper positionvalue is greater than temperature controldamper position the DCV damper position shallbe used to position the damper.

3. System heating and cooling and zone supple-mental heat shall be allowed to operate.

4. Pre-Occupancy Purge:The 3V system shall be capable of providing apre-occupied purge to flush the building of con-taminants up to one hour before the occupancyperiod.

5. The CO2 sensor shall be available in wall-mountas well as duct-mount with or without an LEDdisplay of parts per million of measured con-taminant. The set point shall be adjustable.

P. Zone Dampers:Each Zone Damper shall include:

1. A motorized damper assembly constructed of24 gage galvanized iron with blade of 20 gage.

2. Blade operation providing full modulation fromopen to closed position.

3. The ability to operate in a controlling/linkarrangement, where the controlling damper isoperated by the zone controller. The controllingdamper shall have the capability to have up to4 linked dampers tracking its position. Thelinked dampers shall modulate to the same posi-tion as the controlling damper.

4. Round dampers shall have elliptical blades witha seal around the entire damper blade edge.Rectangular dampers shall have fully sealededges.

5. A duct temperature sensor shall be an integralpart of the damper assembly.

Q. Diagnostics:The Zone and Bypass controllers shall provide self-test, on board diagnostics and alarm conditions, andshall be capable of performing diagnostics on itscritical components as well as all hard-wired sensorsand inputs. The controllers shall display any alarmmessages on the System Pilot until the alarm condi-tion has been corrected. The controllers shall storeat a minimum the last five alarm conditions. Thecontrollers may be configured to report alarms on anetwork or to not report alarms. All alarms shall becapable of being read from the controller throughthe use of a communicating network with a PC andEMS software.

R. Monitoring:The 3V system controllers shall be capable of pro-viding the following information for monitoring ofsystem parameters:

1. Space temperatures2. Filter status3. CO2 status4. Space temperature averaging5. Space temperature sharing6. Occupancy mode7. Supply air temperatures8. Leaving air temperature conditions9. Air source supply temperature

10. Heat/Cool mode conditions11. Error reduction optimized staging12. Indoor relative humidity13. Fan run time14. Compressor run time15. Compressor starts16. Outside air temperature17. Fan status


19

2.02 SOFTWAREA. Access Capability:

Access capability to the system, whether local orremote, shall be accomplished using a communica-tions bus, modem or AutoDial Gateway/TeLINK (asapplicable) and PC with EMS software.

B. Information Retrieval:The software shall be capable of, but not limited to,listing all current system sensor readings, listing andmodifying configuration parameters such as setpoint, occupancy schedules, alarm options, temper-ature limits and functional configuration data. Sys-tem temperature and input information shall beavailable for local or remote site trending.

Part 3 — ADS Requirements3.01 AIR DISTRIBUTION SYSTEM (ADS)

A. Multiple zone controllers being serviced by the sameair handler shall be networked together.

B. Each zone controller shall include an occupancyschedule or may share a global occupancy controlfor an entire designated group.

C. Each zone controller shall be capable of supportingholiday periods.

D. Each zone controller shall include the capability tomonitor one space temperature sensor and CO2

sensor or Relative Humidity sensor.E. The zone controller shall monitor primary damper

position, space temperature, air handler status andmode, supply-air temperature (as applicable) andshall position its terminal damper based on its PID(Proportional, Integral, Derivative) temperaturecontrol algorithm to maintain the desired zonetemperature set point.

F. Each zone controller shall include the inherent abilityto override the temperature control loop and modu-late the terminal’s damper with a PID loop, basedon a ventilation sensor with its associated set pointschedule, in conjunction with the normal tempera-ture control loop.

G. The zone controller shall be capable of maintainingan air quality set point through a Demand Con-trolled Ventilation algorithm in conjunction with theAir Handler to fulfill the requirements of ASHRAEstandard, 62-1989 “Ventilation For AcceptableIndoor Air Quality” (including addendum 62a-1990).The algorithm shall also be capable of modulatingthe heat to keep the space temperature between theheating and cooling set points. The IAQ algorithmshall be temporarily suspended if the space tempera-ture falls below the heating set point or the systemmode is Heat or Morning Warmup. The system shallalso include the capability for a maximum primarydamper position limit to protect the zone from overcooling for those units that do not include localheating.

H. Depending upon the type of terminal, the zone con-troller shall sequence the terminal’s fan, hot watervalve or auxiliary heat as required.

I. Depending on the equipment mode of operation,separate heat/cool, minimum/maximum, damperposition set points shall be used to help protect theequipment from insufficient airflow during heating(minimum heating damper position) or overload(maximum heating and maximum cooling damperposition).

J. Auxiliary heating for IAQ applications shall be of themodulating hydronic type. Two-position actuatoror staged heat shall not be acceptable for IAQapplications.

K. All parallel fan powered terminals with local auxil-iary heat shall include a heat on delay timer (unlessin the commissioning mode) to ensure that theuse of plenum air is insufficient before any heatstage is enabled. All ducted heat shall be controlledso as not to exceed a user defined maximum ducttemperature.All fan powered terminals with local auxiliary heatshall also include a fan off delay value, to ensure thatthe heat has been sufficiently dispersed beforedisabling the fan. All timers shall be provided insoftware.

L. Each space temperature sensor shall include anoverride button as an integral part of the sensor.Whenever the button is pushed during the unoccu-pied mode, the zone shall be indexed to control toits occupied set points, the air source shall start, andthe zone shall stay in its Occupied mode for theduration of the override period. The timed overrideduration shall be operator configurable from oneminute to 24 hours in one-minute increments.

3.02 SYSTEM TERMINAL MODESA. Each air terminal mode shall be based on the cur-

rent air handler mode, terminal type, space temper-ature, and the current temperature set points.

B. All zone controller’s servicing Series fan terminalsshall include a Series Fan Terminal Precheck(SFTP) algorithm before starting its fan and controlsequence. The SFTP algorithm shall ensure properfan rotation whenever the fan is commanded on, byclosing its damper, waiting for a short time delay,and then enabling its fan. Actual damper positionshall be required for this algorithm. After the fanstarts the zone controller shall modulate its damper.Each zone controller servicing Series terminals shallinclude a unique time delay to prevent all dampersfrom closing at once, and to prevent all the fansfrom starting at the same time.

C. The terminal operation depends upon the air sourceoperation and zone requirements as follows:

1. Off:a. All terminal dampers will maintain a 70%

open position. Both Parallel and Series fansshall be disabled.

b. If the zone requirement is heating, all singleduct terminals shall maintain their damperposition at 70%. Any zone controller servicing

20

a parallel or series box shall fully close theirdampers while the fan is operating. If localheat is available, the series and parallel fansshall start and local heat shall be enabled tomaintain its unoccupied heating set point. Thedamper shall be modulated open to 70% afterheating is no longer required.

2. Cooling and Night Time Free Cooling (NTFC):a. If the zone requirement is none, then the

zone controllers shall modulate their damp-ers to maintain their minimum coolingdamper position or damper ventilation posi-tion if the supply air temp is between 65 and75 F. Any zone controllers servicing Seriesterminals shall also modulate their dampersto maintain their minimum cooling damperposition or damper ventilation position if thesupply air temp is between 65 and 75 Fafter completing their SFTP cycle. Duringthe NTFC mode the zone controller shallcontrol between its heating and cooling setpoints. During the other modes the zonecontroller shall modulate its damper to itsoccupied cooling set point.

b. If the zone requirement is cooling, then thezone controllers shall modulate their airdampers between their minimum and maxi-mum cooling damper position to maintaintheir cooling set point. Parallel fans shall bedisabled. Series fans shall start and controlafter completing their SFTP cycle.

c. If the zone requirement is heating, then thezone controllers shall modulate their damp-ers to maintain their minimum coolingdamper position. Any zone controllers ser-vicing Series fans shall complete their SFTPcycle before modulating their dampers. Anyzone controllers servicing single duct unitswith reheat capability shall maintain thegreater of either the minimum coolingdamper position or the minimum reheatdamper position. Zone controllers servicingparallel units shall enable their fans. Zonecontrollers servicing Series terminals shallcomplete their SFTP cycle before modulat-ing their dampers. After the fan starts, thedamper shall be modulated to maintain itsminimum cooling damper position.

3. Heat:a. If the zone requirement is none, then the

zone controller shall maintain its minimumheating damper position. Parallel fans shallbe disabled and their air damper shall bemodulated to maintain their minimum heat-ing damper position. Series units shall com-plete their SFTP cycle checks and thenmodulate its damper to maintain its mini-mum heating damper position.

b. If the zone requirement is cooling, then thezone controller shall modulate its damper tomaintain its minimum heating damper posi-tion. Parallel fans shall be disabled. Zonecontrollers servicing Series units shall com-plete their SFTP cycle and then shall modu-late their primary damper to maintain theirminimum heating damper position.

4. Pressurization:a. If the zone requirement is none or cooling,

then the zone controller shall maintain itsmaximum cooling damper position. Parallelfans shall be disabled. The damper for seriesfans, after successfully completing its SFTPcycle, shall modulate to maintain the maxi-mum cooling damper position.

b. If the zone requirement is heating, and thezone controller has been enabled to providelocal heating, then the zone controller shallmodulate its damper to its maximum coolingdamper position and enable its auxiliaryheat. If local heat is not available, thedamper shall be modulated to maintain itsmaximum cooling damper position.

c. For series fan operations, the SFTP cycleshall be completed before modulating theprimary air damper to its maximum coolingdamper position.

5. Evacuation:During the Evacuation mode all terminal fansshall be disabled and all dampers shall close.

Part 4 — Abnormal Conditions4.01 The proposed system shall include the ability to

detect abnormal conditions, and to react to themautomatically.A return to normal conditions shall also generate areturn to normal notification and the system shallrevert back to its original control scheme before theabnormal condition existed.The following abnormal terminal conditions shallautomatically generate an alarm and the systemshall take the following actions:

A. If a space temperature sensor is determined by thezone controller to be invalid, the zone controllershall generate an alarm, default to its Ventilationmode and maintain its configured ventilationdamper position.

B. If a relative humidity sensor (monitor only function)is determined by the zone controller to be invalid,the zone controller shall generate an alarm.

C. If an indoor air quality sensor is determined by thezone controller to be invalid, the zone controllershall generate an alarm, and disable its IAQalgorithm.


21

D. If a zone controller loses communication with itsassociated coordinator, it shall generate an alarm. Ifthe zone controller does not have a supply-air sen-sor installed, then the zone controller shall assume itis in a Cooling mode and modulate its primary airdamper between its minimum and maximumdamper position. If the zone includes a reheat coil, itshall not allow reheat to function unless the zone hasa valid supply air sensor.

E. If a linkage master loses communications with theequipment controller and it has a primary air tem-perature sensor installed, the linkage master zonecontroller shall determine the equipment operatingmode based on the temperature of the primary air,and the system pressure measured at the bypasscontroller. If no bypass controller exists, the airsource will be determined to be always on.

F. If a linkage master loses communication with anassociated zone controller, the linkage master shallalarm and remove that zone temperature from itsweighted averages. The zone controller shall con-tinue to operate in a stand-alone mode.

Part 5 — System5.01 The system shall include the ability to configure and

display up to 32 zones for each air source. A zoneshall be defined as a space temperature sensor wiredto a zone controller.

A. Configuration:Each zone shall have the ability to configure and dis-play the following:

1. Minimum/Maximum damper position limitsused by the terminal control when the airsource is in the Cooling mode.

2. Minimum/Maximum damper position limitsused by the terminal control when the airsource is in the Heating mode.

3. Reheat damper position limit (single duct unitsonly) used when local heat is required and theair source is in Cooling mode.

4. Ventilation damper position when air source isin cooling or free cooling mode.

5. Terminal Inlet size (diameter or square inches).6. Heating type.7. Central Heating caller.8. Heat on delay.9. Fan off delay (parallel terminal fans only).

10. Maximum duct temperature.11. Alarm set points.12. Occupancy Override value.13. Heating and cooling Occupied/Unoccupied

temperature set points.14. Ventilation set point (CO2) and maximum

damper position limit.15. Heat enable/disable.

B. Zone Display:Zones shall have the capability to display the follow-ing as a minimum:

1. Terminal operating mode and terminal type.2. Zone space temperature.3. Actual damper blade position (0 to 100%

open).4. Primary air temperature (if applicable).5. Terminal fan status (if applicable).6. Leaving temperature (heating only).7. Zone CO2 (if applicable).8. Zone Relative Humidity (if applicable).

C. Maintenance Display:Maintenance screens shall be provided to ease andexpedite the task of troubleshooting. The screensshall have the capability to display the following as aminimum:

1. The current calculated damper reference.2. Occupancy and override status.3. Current user set point offset value.4. Current heating and cooling set points.5. Heat Status (if applicable).6. Ducted heating reference temperature.7. Current Air Source operating mode and supply

temperature.8. Average zone temperature, average occupied

zone temperature, and the next occupied/unoccupied day and time for all terminalsserviced by each respective air handler (linkagemaster only).

9. Occupancy maintenance screens shall displaysuch information as timed override status andduration and current occupied and unoccupiedtime (Local schedule only).

10. Position of the open primary air damper of allterminals serviced by their respective air han-dler (coordinator only).

Part 6 — Linkage6.01 Each zone controller shall have the capability to

directly communicate to a factory supplied airsource microprocessor to provide a totally linkedand coordinated Air Distribution System.

A. The linkage shall include the following air sourcemodes for use by the Coordinator as a minimum:Off, Cooling, Heating, Night Time Free Cooling,Pressurization, and Evacuation.

B. The linkage shall also provide system data to the airsource controller for use in its algorithms.

C. The coordinator shall periodically poll its assignedzones to acquire their updated values.

D. Space temperature and space temperature setpoints acquired by the coordinator for use by the airhandler controller shall include a weighted factor,proportional to the size of the zone.

22

E. Only those zones with valid temperature readingsshall be included.

F. The system data shall include average zone tempera-ture, average occupied zone temperature, averageoccupied and unoccupied heat/cool set points,occupancy status, and the next occupied zones ter-minal time and day.

G. Maximum CO2 or space relative humidity shall besupplied to the air source through other networkingmeans.

H. The system shall provide the capability of using theabove data in the air source algorithms for adaptiveoptimal start, Night Time Free Cooling, dehumidifi-cation and Demand Controlled Ventilation adjust-ments to the mixed air damper routine.

I. The air handler controller shall, through the AirDistribution System, bias its occupancy time sched-ules to provide optimization routines and occupantoverride.

J. For those systems that do not include inherent link-age software, the Coordinator shall determine theoperational mode of the equipment through its asso-ciated bypass controller pressure sensor and a tem-perature sensor mounted in the supply ductwork. Ifthere is no bypass controller then the system willassumed to be always on.

K. The vendor shall make it clear in the bid/proposal iflinkage software is not going to be part of theiroffering.

Guide specifications — 3V™ control system (cont)

23

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.New Pg 24 Catalog No. 523-349 Printed in U.S.A. PC 111 Form 33ZC-1PD

Replaces: NewBook 1 4Tab 11a 13a

Carrier Corporation • Syracuse, New York 13221 105 9-04

Book 1Tab 1CS1

Documents

Product VVT® (Variable Volume and Data …dms.hvacpartners.com/docs/1005/public/03/33zc-1pd.pdf3 Terminal control Bypass controller (33ZCBC-01) — The VVT bypass controller is a