Carrier VVT Zone, OPN-VVTZC Installation And Startup Manual

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Table of Contents

Introduction .................................................................................................................................................................. 1

What is a VVT Zone Controller? .......................................................................................................................... 1

Specifications ........................................................................................................................................................ 3

Safety Considerations .......................................................................................................................................... 5

Installation ................................................................................................................................................................... 6

Field-supplied hardware ...................................................................................................................................... 6

Mounting the VVT Zone Controller ..................................................................................................................... 7

To mount the controller ........................................................................................................................ 7

Wiring the VVT Zone Controller for power ......................................................................................................... 8

To wire the controller for power ............................................................................................................ 9

To address the VVT Zone Controller ................................................................................................................... 9

Wiring the VVT Zone Controller to the MS/TP network ............................................................................... 10

Wiring specifications ........................................................................................................................... 10

To wire the controller to the network ................................................................................................. 10

Wiring sensors to inputs ................................................................................................................................... 11

Wiring an SPT sensor .......................................................................................................................... 12

Rnet wiring specifications ........................................................................................................ 12

To wire the SPT sensor to the controller ................................................................................. 13

Wiring a T55 space temperature sensor ........................................................................................... 14

Wiring specifications ................................................................................................................ 14

To wire the T55 sensor to the controller ................................................................................. 14

Wiring a Supply Air Temperature sensor ............................................................................................ 15

Wiring specifications ................................................................................................................ 15

To wire the SAT sensor to the controller ................................................................................. 15

Wiring a Duct Air Temperature sensor ............................................................................................... 16

Wiring specifications ................................................................................................................ 16

To wire the DAT sensor to the controller ................................................................................. 16

Wiring a CO2 sensor ............................................................................................................................ 17

Wiring specifications ................................................................................................................ 17

To wire the CO2 sensor to the controller ................................................................................ 17

Wiring a Relative Humidity sensor ..................................................................................................... 19

Wiring specifications ................................................................................................................ 19

To wire the RH sensor to the controller................................................................................... 20

Wiring a remote occupancy sensor .................................................................................................... 20

Wiring specifications ................................................................................................................ 21

Wiring equipment to outputs ........................................................................................................................... 21

Wiring specifications ........................................................................................................................... 21

Wiring diagram legend ........................................................................................................................ 22

Single duct only ................................................................................................................................... 22

Single duct 2-position hot water ......................................................................................................... 23

Single duct modulating hot water ...................................................................................................... 23

Single duct combination base board and ducted heat ..................................................................... 24

Single duct 2-stage electric heat ........................................................................................................ 24

Fan box 2-position hot water .............................................................................................................. 25

Fan box modulating hot water - ducted or baseboard ...................................................................... 25

Fan box combination baseboard and ducted heat ........................................................................... 26

Fan box 2-stage electric heat ............................................................................................................. 26

Wiring field-supplied actuators to the analog output ........................................................................ 27

High-torque actuators .............................................................................................................. 27

Linked actuators ....................................................................................................................... 28

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Table of Contents

Start-up ....................................................................................................................................................................... 29

Configuring the VVT Zone Controller's properties ......................................................................................... 29

Unit Configuration properties ............................................................................................................. 30

Setpoint properties.............................................................................................................................. 30

Service Configuration properties ........................................................................................................ 33

Linkage properties .............................................................................................................................. 34

Performing system checkout ........................................................................................................................... 35

Commissioning the VVT Zone Controller ........................................................................................................ 36

Balancing the system ........................................................................................................................................ 36

Step 1: Prepare for balancing ............................................................................................................ 37

Step 2: Balance each zone ................................................................................................................ 37

Step 3: Set the system static pressure ............................................................................................. 38

Sequence of operation .............................................................................................................................................. 40

Temperature sensors ........................................................................................................................................ 40

Zone airflow control ........................................................................................................................................... 41

Zone reheat control ........................................................................................................................................... 42

Demand control ventilation (DCV) and dehumidification using optional sensors ................................... 43

Occupancy ........................................................................................................................................................... 44

Alarms ................................................................................................................................................................. 45

Demand limiting ................................................................................................................................................ 46

Linkage ................................................................................................................................................................ 46

Air source mode determination....................................................................................................................... 47

Troubleshooting ......................................................................................................................................................... 48

LED's .................................................................................................................................................................... 48

Serial number ..................................................................................................................................................... 49

Replacing the VVT Zone Controller's battery ................................................................................................. 49

Compliance ................................................................................................................................................................ 50

FCC Compliance ................................................................................................................................................. 50

CE Compliance ................................................................................................................................................... 50

BACnet Compliance........................................................................................................................................... 50

Appendix A: VVT Zone Controller Points/Properties .............................................................................................. 51

Status................................................................................................................................................................... 51

Unit Configuration .............................................................................................................................................. 52

Setpoints ............................................................................................................................................................. 53

Alarm Configuration .......................................................................................................................................... 58

Service Configuration ........................................................................................................................................ 60

Maintenance ....................................................................................................................................................... 63

Alarms ................................................................................................................................................................. 65

Linkage ................................................................................................................................................................ 65

I/O Points ............................................................................................................................................................ 67

Appendix B: VVT terminal modes ............................................................................................................................ 69

Index ........................................................................................................................................................................... 71

ii VVT Zone Controller

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VVT Zone

(OPN-VVTZC)

VVT Zone

(OPN-VVTZC)

VVT Zone

(OPN-VVTZC)

VVT Zone

(OPN-VVTZC)

VVT Bypass

(OPN-VVTBP)

MANUAL ON WARMER

Occupied

INFO COOLER

MANUAL ON WARMER

Occupied

INFO COOLER

MANUAL ON WARMER

Occupied

INFO COOLER

MANUAL ON WARMER

Occupied

INFO COOLER

Introduction

What is a VVT Zone Controller?

The VVT Zone Controller (#OPN-VVTZC), a component of the i-Vu Open Control System, controls zone

temperature in single duct, fan powered, Variable Volume and Temperature (VVT

) applications. The VVT Zone Controller with built-in actuator maintains zone temperature by operating the terminal fan and regulating the flow of conditioned air into the space. Buildings with diverse loading conditions can be supported by controlling the air source heating and cooling sources or supplemental heat. The VVT Zone Controller provides dedicated control functions for single duct and fan box terminals with modulating heat, up to 2 stages of ducted heat, or combination baseboard and ducted heat.

The i-Vu Open Control System uses linkage to exchange data between the zone terminals and their air source to form a coordinated HVAC system. The system's air source controller, zone controllers, and bypass controller are linked so that their data exchange can be managed by one zone controller configured as the VVT Master.

The following illustration shows the VVT Zone Controller in a typical i-Vu Open Control System.

VVT Zone Controller 1

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Introduction

134

9 6

134

9 6

HWV

Gnd

Analog Output

Gnd

T55 (Opt)

RH/CO2

Gnd

SAT

Gnd

REMOTE

LED

Gnd

Rnet +

Rnet -

+12V

R n e t

BACnet Power

On 4 3

2 1

Batt

CR2032

10's

1's

Thermistor

T55 (Opt)

RH/CO2

Factory Defaults

Rnet

MSTP

Output 24V Max, 1A Max

Conductors Only

Class 2

Use Copper

26Vdc, 0.1A, 3W

14VA, 0.58A

24Vac , 50- 60 H z

This produ c t w as des ign ed

CAUTION:

to be moun t ed inside the building envelope.Warranty voided if mounted outside.

Interconnect the Outputs of Diff er en t Cl ass 2 Circuits.

To ReduceThe Risk of Fire or Electric Shock, Do Not

CAUTION:

BACnet

VVT Zone

AO: 0-10 Vdc

5mA Max

Local

Access

Short pins

Enable SAT

Enable SAT and REM O TE

CW CCW

Motor

Error

Run

Power

0-5Vdc

Made in USA

Inputs

TxRx

MSTP Baud

76.8k38.4k19.2k9600

Damper release bu t t on inside

TYPE: 002101

E143900

88FO

Enclosed Ener gy

Managemen t Equipment

Net +

Net -

Shield

Ground

24V ac

Rnet+

Sense

+12V Rnet-

Gnd

FAN

Power for B. O.s

BUS

HEAT1

HEAT2

(OPN-VVTZC)

BT485

NOTE This document gives instructions for field-installation of a VVT Zone Controller in an i-Vu Open Control System. However, VVT Zone Controllers are available factory-mounted to Carrier’s round and rectangular dampers. Damper assemblies have an integrated duct temperature sensor.

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Specifications

Driver drv_vvtopen

Maximum number of control

programs

Power 24 Vac ±10%, 50–60 Hz

14 VA power consumption (20 VA with BACview 26 Vdc (25 V min, 30 V max) Single Class 2 source only, 100 VA or less

BACnet port

Rnet port

For communication with the controller network using MS/TP (9600 bps, 19.2 kbps, 38.4 kbps, or 76.8 kbps)

For SPT sensors and a BACview a daisy-chain configuration:

• 1 SPT Plus or SPT Pro

• 1–4 SPT Standards

• 1–4 SPT Standards, and 1 SPT Plus or SPT Pro

• Any of the above combinations, plus a BACview

devices total

Local Access port

For system start-up and troubleshooting using Field Assistant or BACview (115.2 kbps)

Inputs

4 inputs for connecting the following types of sensors:

• An alternate space temperature sensor (#33ZCT55SPT)

• Supply air temperature sensor (#33ZCSENSAT)

• Duct air temperature sensor (#33ZCSENDAT)

• CO2 sensor (#33ZCSENCO2)

• Relative humidity sensor (#33ZCSENSRH-01 [indoor space] or

33ZCSENDRH-01 [duct])

• Remote occupancy sensor

Input resolution 10 bit A/D

attached)

in any of the following combinations, wired in

but no more than 6

Digital outputs 3 digital outputs, relay contact rated at 1 A max. @ 24 Vac/Vdc. Configured

normally open.

Analog output 1 analog output, 0–10 Vdc (5 mA max). The controlled device must have a

minimum of 2000 Ohms resistance measured from its input to ground and must share the same ground as the controller.

Output resolution 8 bit D/A

Integral actuator Brushless DC motor, torque 35 inch-pounds (4 Nm), runtime 205 seconds for

90 degree travel during control, or 25 seconds in high-speed test and balance mode

Battery 10-year Lithium CR2032 battery provides a minimum of 10,000 hours of data

retention during power outages

Protection Incoming power and network connections are protected by non-replaceable

internal solid-state polyswitches that reset themselves when the condition that causes a fault returns to normal. The power, network, input, and output connections are also protected against voltage transient and surge events.

BT485 connector You attach a BT485 (not included) to a controller at the beginning and end of

a network segment to add bias and to terminate a network segment.

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Introduction

Status indicators LED's indicate status of communications, running, errors, power, and digital

outputs

Environmental operating

0 to 130° F (-18 to 54°C), 0 to 90% relative humidity, non-condensing

range

Storage temperature range -24 to 140°F (-30 to 60°C), 0 to 90% relative humidity, non-condensing

Physical UL94-5VA plenum rated enclosure for installation in plenum (or other space

for environmental air) in accordance with NEC Section 300.22 (c) and (d)

Overall dimensions A:

B: C:

Mounting dimensions D:

E: F: G: H:

7 in. (17.8 cm) 6-1/32 (15.4 cm) 6 in. (15.24 cm)

5-5/8 in. (14.3 cm) 4-9/16 in. (24.3 cm) 1-5/16 in. (3.3 cm.) 7/8 in. (2.2 cm) 1-5/16 in. (3.3 cm)

Panel depth 2-1/2 in. (6.4 cm) minimum

Shaft dimension Minimum shaft diameter: 3/8 in. (.95 cm.)

Maximum shaft diameter: 1/2 in. (1.27 cm) Minimum shaft length: 1 3/4 in. (4.45 cm)

Weight 1.7 lbs (0.77 kg)

BACnet support Conforms to the Advanced Application Controller (B-AAC) Standard Device

Profile as defined in ANSI/ASHRAE Standard 135-2004 (BACnet) Annex L

Listed by UL-916 (PAZX), cUL-916 (PAZX7), FCC Part 15-Subpart B-Class A, CE

EN50082-1997

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Safety Considerations

SAFETY NOTE

Air conditioning equipment will provide safe and reliable service when operated within design specifications. The equipment should be operated and serviced only by authorized personnel who have a thorough knowledge of system operation, safety devices, and emergency procedures.

Good judgment should be used in applying any manufacturer's instructions to avoid injury to personnel or damage to equipment and property.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury, death, and/or equipment damage.

Disconnect all power to the unit before performing maintenance or service. Unit may automatically start if power is not disconnected.

Follow all local, state, and federal laws regarding disposal of equipment containing hazardous materials such as mercury contactors.

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Installation

To install the VVT Zone Controller:

1 Mount the controller to the VVT box. (page 7) 2 Wire the controller for power. (page 8) 3 Set the controller's address. (page 9) 4 Wire the controller to the MS/TP network. (page 10) 5 Wire sensor(s) to the controller. (page 11) 6 Wire equipment to the controller's outputs. (page 21)

Field-supplied hardware

Each zone controller installation requires the following field-supplied components:

• zone terminal unit

• round or rectangular mounting bracket

• space temperature sensor

• supply air temperature sensor

• 4x2-in. electrical box

• transformer— 24 Vac, 40 VA

• two no. 10 x 1/2-in. sheet metal screws (to secure SAT sensor to duct)

• two no. 6-32 x 5/8-in. screws (to mount space temperature sensor base to electrical box)

• wiring

• bushings (required when mounting SAT sensor in a duct 6-in. or less in diameter)

Optional:

• contactors (if required for fan or electric heat)

• indoor air quality sensor

• relative humidity sensor

• 2 screws and 2 hollow wall anchors (to mount relative humidity sensor directly to wall)

• valve and actuator for hot water heat (if required)

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End view inle t

Controller

Allow 1 ft. (.3 m) clea rance for service access

2.5 in. (6.35

cm)

Damper ShaftVVT Box

Controller

Anti-rotation slot

O-ring Bushing

Anti-rotation slot

Mounting the VVT Zone Controller

Mount the VVT Zone Controller on the zone terminal’s damper actuator shaft. For service access, allow at least 1 foot (.3 m) of clearance between the front of the controller and adjacent surfaces.

To mount the controller

1 Turn the damper shaft to fully close the damper. 2 Remove the controller’s cover. 3 Mount the controller to the VVT box by sliding the clamp assembly onto the damper shaft.

4 Secure the controller by installing the screw provided through the anti-rotation slot's bushing and o-ring.

NOTE Center the bushing in the slot. Failure to do so may cause the actuator to stick or bind.

5 Hold down the controller’s damper release button and rotate the actuator clamp in the same direction

that closed the damper. Rotate the clamp until it stops, then rotate it back one notch.

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Installation

Damper release button

5/8-in. nuts

Move stop clamp if necessary

6 Release the button. 7 Tighten the actuator clamp to the damper shaft by tightening the two 5/16 inch nuts. 8 Hold down the damper release button and rotate the damper from fully closed to fully open. If the

damper traveled less than 90 degrees, do the following to set the actuator's fully open position:

a) Loosen the appropriate stop clamp screw. See figure below. b) Move the stop clamp until it contacts the

edge of the actuator cam.

c) Tighten the screw.

9 Hold down the damper release button, rotate the damper to verify that it fully opens and closes, then

release the button.

Wiring the VVT Zone Controller for power

The VVT Zone Controller is powered by a Class 2 power source. Take appropriate isolation measures when mounting it in a control panel where non-Class 2 circuits are present.

8 VVT Zone Controller

Carrier controllers can share a power supply as long as you:

• Maintain the same polarity

• Use the power supply only for Carrier Open controllers

Page 13

10's

1's

To wire the controller for power

1 Remove power from the power supply. 2 Pull the screw terminal connector from the controller's power terminals labeled Gnd and 24 Vac or Hot. 3 Connect the transformer wires to the screw terminal connector. 4 Apply power to the power supply. 5 Measure the voltage at the VVT Zone Controller’s power input terminals to verify that the voltage is within

the operating range of 21.6–26.4 Vac.

6 Connect a 4-inch (10.2 cm) wire from Gnd to the control panel. 7 Insert the screw terminal connector into the VVT Zone Controller's power terminals. 8 Verify that the Power LED is on and the Run LED is blinking.

To address the VVT Zone Controller

You must give the VVT Zone Controller an address that is unique on the network. You can address the VVT Zone Controller before or after you wire it for power.

1 If the VVT Zone Controller has been wired for power, pull the screw terminal connector from the

controller's power terminals labeled apply power to it.

2 Using the rotary switches, set the controller's address. Set the Tens (10's) switch to the tens digit of the

address, and set the

Ones (1's) switch to the ones digit.

EXAMPLE If the controller’s address is 25, point the arrow on the Tens (10's) switch to 2 and the arrow

on the

Ones (1's) switch to 5.

CAUTION The factory default setting is "00" and must be changed to successfully install your VVT Zone

Controller.

VVT Zone Controller 9

Gnd and 24 Vac. The controller reads the address each time you

Page 14

Installation

Wiring the VVT Zone Controller to the MS/TP network

The VVT Zone Controller communicates using BACnet on an MS/TP network segment communications at 9600 bps, 19.2 kbps, 38.4 kbps, or 76.8 kbps.

Wire the controllers on an MS/TP network segment in a daisy-chain configuration.

Install a BT485 on the first and last controller on a network segment to add bias and prevent signal distortions due to echoing.

See the MS/TP Networking and Wiring Installation Guide for more details.

Wiring specifications

Cable: 22 AWG or 24 AWG, low-capacitance, twisted, stranded, shielded copper wire

Maximum length: 2000 feet (610 meters)

To wire the controller to the network

1 Pull the screw terminal connector from the controller's power terminals labeled Gnd and 24 Vac or Hot. 2 Check the communications wiring for shorts and grounds. 3 Connect the communications wiring to the BACnet port’s screw terminals labeled Net +, Net -, and

Shield.

NOTE Use the same polarity throughout the network segment.

4 Verify that the MSTP jumper is set to MSTP.

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5 Set DIP switches 1 and 2 to the appropriate baud rate. See the MSTP baud diagram on the VVT Zone

Controller. The default baud rate is 76.8 kbps.

NOTE Use the same baud rate for all controllers on the network segment.

6 Insert the power screw terminal connector into the VVT Zone Controller's power terminals. 7 Verify communication with the network by viewing a module status report.

Wiring sensors to inputs

You can wire the following sensors to the VVT Zone Controller's inputs:

• Space temperature sensor (page 12)

• Alternate space temperature sensor (page 14)

• Supply Air Temperature sensor (page 15)

• Duct Air Temperature sensor (page 16)

• CO

sensor

• Relative Humidity sensor (page 19)

• Remote occupancy contact sensor (page 20)

NOTE This document gives instructions for wiring the sensors to the VVT Zone Controller. For mounting and wiring the sensors, see the Carrier Sensors Installation Guide.

Disconnect electrical power to the VVT Zone Controller before wiring it. Failure to follow this warning could cause electrical shock, personal injury, or damage to the controller.

• Do not run sensor or relay wires in the same conduit or raceway with Class 1 AC or DC service wiring.

• Do not abrade, cut, or nick the outer jacket of the cable.

• Do not pull or draw cable with a force that may harm the physical or electrical properties.

• Avoid splices in any control wiring.

VVT Zone Controller 11

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Installation

Sensor

Part #

Features

SPT Standard

SPT Plus

•

SPT Pro

•

Wiring an SPT sensor

The VVT Zone Controller is connected to a wall-mounted space temperature sensor to monitor room temperature.

An i-Vu Open Control System offers the following SPT sensors:

SPS

• Local access port

• No operator control

SPPL

Slide potentiometer to adjust setpoint

• MANUAL ON button to override schedule

• LED to show occupied status

• Local access port

SPP

LCD display

• MANUAL ON button to override schedule

• WARMER and COOLER buttons to adjust setpoint

• INFO button to cycle through zone and outside air temperatures,

setpoints, and local override time

• Local access port

You wire SPT sensors to the VVT Zone Controller's Rnet port. An Rnet can consist of any of the following combinations of devices wired in a daisy-chain configuration:

• 1 SPT Plus or SPT Pro

• 1–4 SPT Standards

• 1–4 SPT Standards, and 1 SPT Plus or SPT Pro

• Any of the above combinations, plus up to 2 BACview

's but no more than 6 devices total

NOTES

• If you have 2 BACview

's, the second BACview6 must have a separate power supply with the same

ground as the controller.

• If the Rnet has multiple SPT Standard sensors, you must give each a unique address on the Rnet. See

the Carrier Sensors Installation Guide.

• If the Rnet has multiple BACviews, you must give each a unique address on the Rnet. See the BACview

Installation and User Guide.

Rnet wiring specifications

NOTE Use the specified type of wire and cable for maximum signal integrity.

Description 4 conductor, unshielded, CMP, plenum rated cable

Conductor 18 AWG

Maximum length 500 feet (152 meters)

Recommended coloring Jacket: White

Wiring: Black, white, green, red

UL temperature rating 32–167°F (0–75°C)

12 VVT Zone Controller

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Outer Jacket

Inner insulation

.25 in. (.6 cm)

Connect this wire...

To this terminal...

Voltage 300 Vac, power limited

Listing UL: NEC CL2P, or better

To wire the SPT sensor to the controller

1 Partially cut, then bend and pull off the outer jacket of the Rnet cable(s). Do not nick the inner insulation.

Strip about .25 inch (.6 cm) of the inner insulation from each wire.

2 Wire each terminal on the sensor to the same terminal on the controller. See diagram below.

NOTE Carrier recommends that you use the following Rnet wiring scheme:

Red

Black

White

Green

3 Verify that the Rnet jumper is set to Rnet.

+12V

Rnet-

Rnet+

Gnd

VVT Zone Controller 13

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Installation

Wiring a T55 space temperature sensor

Part #33ZCT55SPT

This wall-mounted sensor monitors space temperature and can be used instead of an SPT sensor.

Wiring specifications

Cable from sensor to controller: If <100 ft (30.5 meters) 22 AWG, unshielded

If >100 ft (30.5 meters) 22 AWG, shielded

Maximum length: 500 feet (152 meters)

To wire the T55 sensor to the controller

1 Strip the outer jacket from the cable for at least 3 inches (7.62 cm). Strip .25 inch (.6 cm) of insulation

from each wire. Cut the shield and drain wire from the cable.

2 Wire the sensor to the controller, attaching the red wire to the T55 (Opt) terminal and the black wire to

the

Gnd terminal. See diagram below.

3 Verify that the T55 (Opt) jumper is in the Thermistor position.

14 VVT Zone Controller

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Wiring a Supply Air Temperature sensor

Part #33ZCSENSAT

The VVT Zone Controller requires a temperature sensor installed in the supply air stream. The Supply Air Temperature (SAT) sensor is used when the zone controller is equipped with ducted heating.

Wiring specifications

Cable from sensor to controller: If <100 ft (30.5 meters) 22 AWG, unshielded

Maximum length: 500 feet (152 meters)

To wire the SAT sensor to the controller

If >100 ft (30.5 meters) 22 AWG, shielded

1 Wire the sensor to the controller. See diagram below. 2 Verify that the Enable SAT jumper is on. 3 Verify that the Enable SAT and REMOTE jumper is in the left position.

VVT Zone Controller 15

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Installation

Wiring a Duct Air Temperature sensor

Part #33ZCSENDAT

The Duct Air Temperature Sensor (DAT) monitors the supply air temperature and is required for cooling and heating air source applications on non-Carrier dampers and for stand-alone operation without ducted reheat.

Wiring specifications

Cable from sensor to controller: If <100 ft (30.5 meters) 22 AWG, unshielded

If >100 ft (30.5 meters) 22 AWG, shielded

Maximum length: 500 feet (152 meters)

To wire the DAT sensor to the controller

1 Wire the sensor to the controller. See diagram below.

NOTE Sensor wiring does not have polarity. The wires can be connected to either terminal.

2 Using electrical tape, insulate any exposed wire to prevent shorting. 3 Connect shield to earth ground (if using shielded wire to extend cable length). 4 Verify that the Enable SAT jumper is on. 5 Verify that the Enable SAT and REMOTE jumper is in the left position.

16 VVT Zone Controller

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Wiring a CO2 sensor

Part #33ZCSPTCO2LCD-01 (Display model) Part #33ZCSPTCO2-01 (No display) Part #33ZCT55CO2 (No display)

A CO

sensor monitors carbon dioxide levels. As CO2 levels increase, the VVT Zone Controller adjusts the

outside air dampers to increase ventilation and improve indoor air quality. These sensors also monitor temperature using a 10K thermister.

A CO

sensor can be wall-mounted or mounted in a return air duct. (Duct installation requires an Aspirator

Box Accessory - Part #33ZCASPCO2.)

The sensor has a range of 0–2000 ppm and a linear 4-20 mA output. This is converted to 1-5 Vdc by a 250 Ohm, 1/4 watt, 2% tolerance resistor connected across the zone controller's CO2 input terminals.

NOTE Do not use a relative humidity sensor and CO2 sensor on the same zone controller.

Wiring specifications

Cable from sensor to controller: If <100 ft (30.5 meters) 22 AWG, unshielded

Maximum length: 500 feet (152 meters)

To wire the CO2 sensor to the controller

#33ZCSPTCO2

1 Wire the sensor to the controller. See appropriate diagram below. 2 Verify that the RH/CO2 jumper is set to 0-5Vdc on the VVT Zone Controller. 3 Verify the J7 jumper on the sensor is set to 0-5Vdc.

If >100 ft (30.5 meters) 22 AWG, shielded

VVT Zone Controller 17

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Installation

Wiring diagram for #33ZCSPTCO2:

#33ZCT55CO2

1 Wire the sensor to the controller. See appropriate diagram below. 2 Install a field supplied 250 Ohm 1/4 watt 2% tolerance resistor across the controller's RH/CO2 and Gnd

terminals.

3 Verify that the RH/CO2 jumper is set to 0-5Vdc on the VVT Zone Controller.

18 VVT Zone Controller

Page 23

Wiring diagram for #33ZCT55CO2:

Wiring a Relative Humidity sensor

Part #OPNSENSRH-01

The Relative Humidity (RH) sensor is used for zone humidity control (dehumidification) if the rooftop unit has a dehumidification device. If not, the sensor only monitors humidity.

NOTE Do not use a relative humidity sensor and CO2 sensor on the same zone controller.

Wiring specifications

Cable from sensor to controller: If <100 ft (30.5 meters) 22 AWG, unshielded

Maximum length: 500 feet (152 meters)

If >100 ft (30.5 meters) 22 AWG, shielded

VVT Zone Controller 19

Page 24

Installation

To wire the RH sensor to the controller

1 Strip the outer jacket from the cable for at least 4 inches (10.2 cm). Strip .25 inch (.6 cm) of insulation

from each wire.

2 Wire the sensor to the controller. See diagram below. 3 Using electrical tape, insulate any exposed resistor lead to prevent shorting. 4 Verify that the RH/CO2 jumper is set to 0-5Vdc. 5 Set SW3 on the sensor as shown below.

Wiring a remote occupancy sensor

You can wire a normally open or normally closed dry-contact occupancy sensor to the VVT Zone Controller's REMOTE input as shown below. The controller supplies the 24 Vac needed for the input.

20 VVT Zone Controller

Page 25

Wiring specifications

Cable from sensor to controller: If <100 ft (30.5 meters) 22 AWG, unshielded

Maximum length: 500 feet (152 meters)

Wiring equipment to outputs

Use the following wiring diagrams to wire zone terminal equipment to the VVT Zone Controller's outputs.

Single duct (page 22)

Single duct 2-position hot water (page 23)

Single duct modulating hot water (page 23)

Single duct combination baseboard and ducted heat (page 24)

Single duct 2-stage electric heat (page 24)

Fan box 2-position hot water (page 25)

Fan box modulating hot water (page 25)

Fan box combination base board and ducted heat (page 26)

Fan box 2-stage electric heat (page 26)

If >100 ft (30.5 meters) 22 AWG, shielded

Disconnect electrical power to the VVT Zone Controller before wiring it. Failure to follow this warning could cause electrical shock, personal injury, or damage to the controller.

Wiring specifications

To size output wiring, consider the following:

• Total loop distance from the power supply to the controller, and then to the controlled device

NOTE Include the total distance of actual wire. For 2-conductor wires, this is twice the cable length.

• Acceptable voltage drop in the wire from the controller to the controlled device

• Resistance (Ohms) of the chosen wire gauge

• Maximum current (Amps) the controlled device requires to operate

VVT Zone Controller 21

Page 26

Installation

Gnd

HWV

CO2

LED

REMOTE

SAT

SPT

T55 (OPT)

– – –

Wiring diagram legend

Ground

Hot water valve

sensor

Not used

Remote occupancy sensor

Relative humidity sensor

Supply air temperature sensor

Space temperature sensor

Alternate space temperature sensor

Field-supplied wiring

Single duct only

22 VVT Zone Controller

Page 27

Single duct 2-position hot water

Single duct modulating hot water

VVT Zone Controller 23

Page 28

Installation

Single duct combination base board and ducted heat

Single duct 2-stage electric heat

24 VVT Zone Controller

Page 29

Fan box 2-position hot water

Fan box modulating hot water - ducted or baseboard

VVT Zone Controller 25

Page 30

Installation

Fan box combination baseboard and ducted heat

Fan box 2-stage electric heat

26 VVT Zone Controller

Page 31

Wiring field-supplied actuators to the analog output

You can wire a high-torque actuator or parallel actuators to the controller's 0–10 Vdc analog output.

High-torque actuators

You can wire one of the following Belimo actuators to the VVT Zone Controller's analog output instead of using the controller's built-in, 35 in.-lb actuator.

NMX24-MFT P-10028 90 in.-lb actuator with 0–10 Vdc control and 0–10 Vdc feedback

AMX24-MFT P-10028 180 in.-lb actuator with 0–10 Vdc control and 0–10 Vdc feedback

1 Install the actuator according to the manufacturer's instructions. 2 Wire the actuator to the controller using the diagram below.

NOTE For proper operation and to prevent damage to the devices, use the same polarity for the actuator's power and the VVT Zone Controller's power.

VVT Zone Controller 27

Page 32

Installation

Linked actuators

You can wire up to 4 of the following Belimo actuators to the VVT Zone Controller's analog output. Use like actuators so that travel times and other parameters coincide.

LMX24-MFT P-10028 45 in.-lb actuator with 0–10 Vdc control

NMX24-MFT P-10028 90 in.-lb actuator with 0–10 Vdc control

AMX24-MFT P-10028 180 in.-lb actuator with 0–10 Vdc control

1 Install the actuators according to the manufacturer's instructions. 2 Wire the actuators to the controller using the diagram below. 3 Set the direction rotation switch on each actuator to CW.

IMPORTANT! If slaving 45° actuators, you must go to Properties > I/O Points > Hot Water Valve Max and change scaling to

200 for the slave actuator to correctly track the primary actuator.

NOTE Maintain polarity if using the same power supply for more than one actuator.

28 VVT Zone Controller

Page 33

This interface...

Provides a...

i-Vu Open

Field Assistant

Virtual BACview

BACview6 Handheld

BACview6

Start-up

To start up the VVT Zone Controller, you need one of the following user interfaces. These items let you access the controller information, read sensor values, and test the controller.

Permanent interface software

software -

runs on a laptop connected to controller's Local Access port

software -

1, 2

runs on a laptop connected to controller's Local Access port

keypad/display unit -

connects to controller's Local Access port

1, 2

keypad/display unit

connected to controller's Rnet port

Requires a USB Link (USB-L).

See the BACview Installation and User Guide for instructions on connecting and using the above items.

Configuring the VVT Zone Controller's properties

To start up the VVT Zone Controller, you need to configure the properties described in the following sections. These properties affect the unit operation and/or control. Review and understand the meaning and purpose of each property before changing it.

• Unit Configuration properties 30 (page )

• Setpoint Configuration properties 30 (page )

• Service Configuration properties 33 (page )

• Linkage properties 34 (page )

See Appendix A (page 51) for a complete list of the controller's points/properties.

NOTE Engineering units shown in this document in the defaults and ranges are strictly for reference. You must enter an integer only.

Temporary interface

Permanent interface

VVT Zone Controller 29

Page 34

Start-up

Navigation:

Properties > Equipment > Configuration > Unit Configuration HOME

CONFIG

UNIT

Point Name/Description

Default/Range

Heat Enable

Parallel Fan Heat On Delay

Term Type

Parallel

Term Type

Single Duct

DCV Max Vent Damper Pos

Heating Lockout Temperature

Navigation:

Properties > Equipment > Configuration > Setpoint Configuration HOME

CONFIG

SETPOINT

Point Name/Description

Default/Range

Heating Capacity

Heating Design Temp

Cooling Capacity

Cooling Design Temp

m must run constantly to maintain comfort. This information is available in

Unit Configuration properties

i-Vu / Field Assistant: BACview:

– The delay in reheat coming on after the zone has a heating demand. If the to heat the space prior to bringing mechanical reheat. If the

, this allows the fan time to use plenum air

we recommend that you set this value to 1 minute.

override the damper to. When active, the damper modulates to the temperature control position or the IAQ override position, whichever is greater.

temperature exceeds this value. Supplemental reheat is enabled when the outside air temperature falls below a fixed hysteresis of 2°F. This function is active only if there is a valid network outside air temperature.

Setpoint properties

D: – Enables the reheat function.

Enable

Disable/Enable

15 minutes

0 to 30 minutes

70%

D: – The maximum damper position that the IAQ function can

0 to 100%

70°F

D: – Supplemental reheat is disabled if outside air

-60 to 150°F

i-Vu / Field Assistant: BACview:

temperature changes when the heating system runs at full capacity to maintain designed occupied heating setpoint.

heating system must run constantly to maintain comfort. This information is available in ASHRAE publications and most design references.

temperature changes when cooling system runs at full capacity to maintain designed occupied cooling setpoint.

cooling syste ASHRAE publications and most design references.

5°F/hr

D: – Used for Optimal Start, this is the rate at which the zone

0 to 120°F/hr

0°F

D: – The geographically-based outdoor air temperature at which the

-100 to 150°F

5°F/hr

D: – Used for Optimal Start, this is the rate at which the zone

0 to 140°F/hr

D: – The geographically-based outdoor air temperature at which the

100°F

-100 to 150°F

30 VVT Zone Controller

Page 35

Point Name/Description

Default/Range

Hysteresis

Time

Temp

Occupied heating setpoint: 70°

75.5°

70.5°

Occupied cooling setpoint: 76°

.5° hysteresis

Learning Adaptive Optimal Start

learned

heating capacity

learned cooling capacity

Learning Adaptive

Optimal Start

Learning Adaptive Optimal Start

Effective Set Points

Setpoints

Effective Setpoints

Heating – Heating

Cooling – Cooling

– The desired difference between the temperature at which the zone color changes as the zone temperature departs from the acceptable range between the heating and cooling setpoints (green) into the Cooling 1 (yellow) or Heating 1 (light blue) and the temperature at which the zone color changes back to the acceptable range between the heating and cooling setpoints.

For example, the following graph shows the zone color that results as the zone temperature departs from and returns to the acceptable range in a zone with the following settings:

• Color Change Hysteresis = .5° (applies as the temperature returns to the

acceptable range)

• Occupied cooling setpoint = 76°

• Occupied heating setpoint = 70°

0.5°F

0.2 to 1.0°F

achieve the occupied setpoint by the time scheduled occupancy begins. This learning adaptive algorithm uses the

algorithm calculates a learned cooling and heating capacity during the previous unoccupied time. Set the

adjustments are based on the color that is achieved when occupancy begins. Adjustment amounts are defined in the thermographic color fields located directly above the

The Effective Setpoints graph shows the current occupied or unoccupied setpoints. If occupied, these values are the current programmed setpoints plus the offset of any setpoint adjustment that may be in affect. If unoccupied, the values are the programmed unoccupied setpoints.

– This function gradually adjusts the unoccupied setpoints over a specified period of time to

and

recovery period from 1 to 4 hours in

values to calculate the effective setpoints prior to the occupied start time. The

. When the

graph under

(Occupied or Unoccupied, depending on mode) The current programmed

setpoint adjusted by any offset that may be in effect.

(Occupied or Unoccupied, depending on mode) The current programmed

setpoint adjusted by any offset that may be in effect.

routine runs,

0 to 120°F

VVT Zone Controller 31

Page 36

Start-up

Learned cooling capacity

Learned heating capacity Min Setpoint Separation

Optimal Start

NOTE

Properties

Equipment

Maintenance

Occupancy

BAS On/Off

Unoccupied

Occupied

Optimal Start Type

None*

Temp Compensated*

Learning Adaptive Start – Unit gradually changes to occupied setpoints by adjusting the

None

Temp Compensated

Heat Start K factor (min/deg)

Optimal Start Type

Temp Compensated

Cool Start K factor (min/deg)

Optimal Start Type

Temp Compensated

Standby Offset

Occupied RH Control Setpoint

Optional Sensor Type

RH Sensor

Control

Enable

Cool

Vent

Cooling

Vent

DCV Start Ctrl Setpoint

Optional Sensor Type

IAQ Sensor

DCV Control

Enable

DCV Max Ctrl Setpoint

DCV Max Vent Damper Pos

– The cooling capacity learned by Learning Adaptive Optimal Start that is required to bring the space temperature down to the occupied cooling setpoint prior to the occupied time.

– The heating capacity learned by Learning Adaptive Optimal Start that is required to bring the space temperature up to the occupied heating setpoint prior to the occupied time.

heating and cooling setpoints.

– The earliest time, prior to occupancy, at which the Optimal Start function may begin to adjust the effective setpoints to achieve the occupied setpoints by the time scheduled occupancy begins. Enter 0 to disable Optimal Start.

Optimal Start is automatically disabled when

is set to either

– The method used to change from unoccupied to occupied

setpoint.

Options:

– Unit will not change to occupied setpoint until the scheduled time or the unit goes into an occupied mode. Setpoints do not ramp, but change immediately from unoccupied to occupied values.

– Unit changes to occupied setpoints at a variable time prior to the occupied time, which is calculated by the current error between space temperature and the appropriate heating or cooling setpoint. At that time, the setpoints do not ramp, but change immediately from unoccupied to occupied values.

D: – Minimum separation that must be maintained between the

4°F

2 to 10°F

1 hr

0 to 4 hr

Temperature Compensated

None

Temperature Compensated Learning Adaptive

unoccupied setpoints over a specified period of time to achieve the occupied setpoint by the time scheduled occupancy begins.

Optimal Start transition factors to 0.

the time in minutes per degree that the equipment starts before the occupied period when the space temperature is below the occupied heating setpoint (including any setpoint offset).

time in minutes per degree that the equipment starts before the occupied period when the space temperature is above the occupied cooling setpoint (including any setpoint offset).

space occupancy sensor indicates that the space is unoccupied. If 0, the unoccupied setpoints are used.

source mode must be before the dehumidification function can be active.

is set to control function. This value should be set to approximately 75 ppm above the outdoor air CO2 level.

to control the damper to its

When selecting

is set to

– If

, you MUST set all Learning Adaptive

is set to

and

, this is the relative humidity setpoint during occupancy. The air

– If

and the terminal mode must be

is set to

and

, this is the value that the CO2 sensor must exceed to begin the DCV

– The value that the CO2 level must exceed for the IAQ function

15.00

D: , this is

0 to 99

15.00

D: , this is the

0 to 99

0°F

D: – The value by which the occupied setpoints are expanded when the

0 to 15°F

65%rh

0 to 100%rh

500ppm

0 to 5000ppm

1050ppm

0 to 5000ppm

32 VVT Zone Controller

Page 37

Parallel Fan ON Value

Terminal Type

Parallel Fan

Occupied Min Airflow

Navigation:

Properties > Equipment > Configuration > Service Configuration HOME

CONFIG

SERVICE

Point Name/Description

Default/Range

Terminal Type

Damper Size (in.)

Damper Area (sq.in.)

External Actuator Enable

Heat Type

None Modulating Two Position Staged EH Combination

Ducted Heat Heat Type

Combination

Yes

Number of Heat Stages

Heat Type

Staged EH

Valve Type

– If

and the zone does not require heating, when the zone’s airflow control setpoint decreases below this value, the parallel fan turns on to increase airflow, ventilation, and prevent cold air dumping into the zone. If the airflow control setpoint rises above this value by more than 1 cfm, the parallel fan turns off. We recommend this value be set to approximately 10% above the

setpoint. Set to 0 to disable this function.

Service Configuration properties

i-Vu / Field Assistant: BACview:

demand. If the zone damper is round, enter its diameter. If rectangular, enter 0.

demand. If the damper is rectangular, enter its area (width x height). If the damper is round, enter 0.

external high-torque or slave actuator. Enabling this setting disables the output for Modulating Hot Water or Combination reheat functions.

– The type of supplemental reheat that the zone controller will control. The

heat may be used with system heat, depending on the space temperature demand.

Options:

– no heat

– ducted or baseboard modulating hot water

– two position hot water

– ducted or baseboard electric heat

– combination baseboard modulating hot water and ducted staged

electric heat

– Determines whether the zone is using ducted heat or baseboard. If

, set this field to

for ducted heat.

0 cfm

0 to 99999 cfm

D: – The type of zone terminal that the controller is installed on.

Single Duct

Single Duct Parallel Series Fan

D: – Used by the VVT Master to calculate the weighted average

6.00 in.

0 to 100.00 in

0 sq.in.

D: – Used by the VVT Master to calculate the weighted average

0 to 9999 sq.in.

D: – Enable if the controller's analog output is used for an

Disable

Enable/Disable

None

None Modulating Two Position Staged EH Combination

Yes

Yes/No

– The number heat stages when the

Fan powered terminals are limited to no more than 2 stages.

power applied to the valve.

VVT Zone Controller 33

D: .

Two stages

One stage Two stages Three stages

D: – Two Position hot water only - The hot water valve's position with no

NC/NO (normally closed/normally open)

Page 38

Start-up

Point Name/Description

Default/Range

Optional Ctrl Type

RH/CO2

RH Control – IAQ Control

PD (Pressure Dependent) Control:

Direction Clockwise

Damper Actuator

Built-in actuator

Cooling Min Damper Position Cooling Max Damper Position

Reheat Min Damper Position

Cooling Min Damper Position

Heating Min Damper Position

Heating Max Damper Position

Vent Position

– The type of sensor used on the controller's

setting determines the control function that is used to override the damper operation.

Options:

zone dehumidification

– Indoor Air Quality control

the damper's position when it rotates clockwise.

controls to when the air source mode is Cooling, Vent, or Free Cooling and the

– If

is set to

space requirements for cooling are at a minimum. We recommend that you set this no lower than 10%.

controls to when the air source mode is Cooling, Vent, or Free Cooling and the space requirements for cooling are at a maximum.

desired damper position at which the reheat will provide optimum performance. This value is compared to the

– For Single Duct units with ducted reheat. Set to the

value, and the greater

of the two values determines the damper position.

controls to when the air source mode is Heat and the space requirements are at a minimum.

controls to when the air source mode is Heat and the space requirements are at a maximum.

air source mode is Vent and the terminal mode is not in the Heat or Cool mode. If Linkage is not active, the zone determines vent mode by verifying that its SAT sensor is between 65°F and 80°F.

input. This

D: , set this field to

D: – The minimum damper position the terminal

D: – The maximum damper position the terminal

D: – The minimum damper position the terminal

D: – The maximum damper position the terminal

D: – The ventilation damper position the terminal controls to when the

None

None RH Control IAQ Control

Closed

Open/Closed

20%

0 to 100%

100%

0 to 100%

45%

0 to 100%

20%

0 to 100%

20%

0 to 100%

50%

0 to 100%

Linkage properties

The linked controllers must be sequentially addressed. The VVT Master must have the highest address, the bypass controller the next lower address, and then the slave zone controllers.

To set up linkage, you must define the properties below only for the VVT Master controller. If you are configuring a slave controller, do not change any

After you define the properties, the VVT Master immediately begins to send zone data to the air source and receive information from the air source.

34 VVT Zone Controller

Linkage settings as the defaults are for a slave.

Page 39

i-Vu / Field Assistant:

Navigation:

Properties > Equipment > Linkage HOME

CONFIG

LINKAGE

Point Name/Description

Default/Range

Linkage Collector

Number of Providers

Linkage Provider

Network Number

Address

Network Number

Address

Linkage Zone Type

VAV Master

VVT Master

Linkage Callers

The minimum number of zones required to make the air source go

BACview:

– Set the

in the linked system, including the bypass and VVT Master.

– Enter the MS/TP

and MAC

of the

linked air source controller.

– Select whether the controller is a Master or a slave.

Select

if the controller is the Master or a sub-master in a VAV

application.

Select

only if the controller is the Master in a VVT application. VVT

applications do not support sub-masters.

into heating or cooling mode. 1 is typical for systems with 8 zones or less. For larger systems, increase the number by 1 for each 6 zones. For example, 3 linkage callers for a 20 zone system.

D: to the total number of controllers

R: 1 1 to 32

0 to 65535

0 to 127

Slave

Slave VVT Master VAV Master

D: –

R: 1 1 to 64

Performing system checkout

1 Verify that all power and communication connections are correct and tight. 2 Verify that all zone terminals, ductwork, and zone controllers are properly installed and set according to

3 Verify that all air duct connections are tight. 4 Verify that zone terminal fans and system controls operate properly. Verify that actuator screws are

5 At the zone terminals, check electrical system and connections of any optional electric reheat coil. If hot

6 Verify that all zone terminal dampers are fully open. 7 If using an air source with field-installed controls, make sure controls and sensors have been installed

8 Verify that the air source motor starter and, if applicable, the Hand/Off/Auto (HOA) switch are installed

9 Verify that the area around the air source is clear of construction dirt and debris. 10 Verify that final filters are installed in the air handler(s). Dust and debris can adversely affect system

11 Verify that the space sensor and all optional sensors are reading correctly.

VVT Zone Controller 35

installation instructions and job requirements.

properly tightened.

water reheat is used, check piping and valves against job drawings.

and wired per manufacturer installation instructions.

and wired.

operation.

Page 40

Start-up

Before starting the air source fan, make sure the zone terminal dampers are not closed. Starting the fan with dampers closed will damage the system ductwork.

Commissioning the VVT Zone Controller

Using Field Assistant or i-Vu: 1 Calibrate the damper travel.

a) Go to

b) Click c) Click

2 For Parallel or Series Fan terminals – in the Locks section, select the Fan's Lock value to checkbox, then

select

3 For modulating hot water reheat – Go to Properties > I/O Points tab, then lock Hot Water Valve to 100%.

If the controller is configured for Single Duct, make sure the air source fan is on. If ducted heat, verify the heat works by verifying that the SAT rises. For baseboard heat, physically check the heating element for proper temperature rise. Release the

4 Release the fan. 5 If the controller is part of a linked system, verify Linkage > Airside Linkage Status shows Active.

CAUTION Pressing the actuator release button and moving the damper or disconnecting the actuator ribbon connector while the bypass controller is powered will cause the damper position to be out of calibration. To recalibrate the damper position, you must perform steps 1a–1c above or power cycle the controller.

Properties > Configuration > Service Configuration > Pressure Dependent Control > Details

tab > Test and Balance. Click Calibrated Damper Close

Calibrated Damper Open

Automatic Control

and verify it travels to the full open.

to return the damper to normal operation.

and verify it goes to the closed position.

On in the droplist. Click Apply. Verify the fan's operation.

Hot Water Valve.

Balancing the system

Most VVT system airflow designs are based on cooling requirements which require a greater CFM flow than heating requirements. Using this balancing procedure, you will adjust the cooling airflow first. If the heating and cooling maximum airflow requirements are the same, you will not need to balance the heating airflow.

There are two methods of balancing the system. Using the Test & Balance program or using i-Vu/Field Assistant. Test & Balance can perform all of the steps outlined here, including shutting down the Linked air source and performing global commands to all zones in the system. Items 1 through 5 in Step 1 should be done prior to using Test & Balance. Please refer to Test & Balance's Help files for details on the required steps to complete the balancing procedure.

Complete the following steps when using i-Vu or Field Assistant to perform the system balancing.

NOTE We recommend that the heating minimum airflow settings for all the zones in the system be set to maintain the air source’s design minimum heat CFM airflow across its heat exchanger to prevent damage to the equipment.

36 VVT Zone Controller

Page 41

Step 1: Prepare for balancing

1 Log in to i-Vu with an Administrator or Installer security level, or use Field Assistant. 2 Make sure the air source and its controller have been properly started and can run as a stand-alone unit. 3 Make sure the zone and bypass controllers have been addressed, commissioned, and started. 4 Verify that a manual damper is installed upstream of the zone damper. This damper will be used to

adjust the maximum design airflow to the space when the zone damper is at 100% open. We strongly recommend that you do not use the damper Cool or Heat Max damper configuration setting for this purpose. Exception: If the design maximum airflow for one mode is less the other, the maximum damper position configuration may be used to adjust the designed airflow of that mode.

5 Verify that zone controllers supplying multiple registers have manual dampers on each register branch

duct for balancing the design airflow through each register.

6 Disable the air source heating and cooling outputs using one of the following methods:

○ Physically disconnect the air source controller’s output wiring to the unit, then enable the fan. ○ In the i-Vu or Field Assistant tree, select the RTU Open or WSHP Open controller. Go to Properties >

Configuration > Service Configuration > Service Test and enable Service Test and Fan Test. Make sure all other outputs are disabled.

Step 2: Balance each zone

1 In the i-Vu or Field Assistant tree, select the zone controller that is physically closest to the air source. Go

Properties > Equipment > Configuration > Service Configuration > Pressure Dependent Control >

to Details tab.

2 Do one of the following:

○ Single Duct or Parallel Fan zone terminals – Click Cool Max to override the zone damper to its

maximum open position. Check the zone for design cooling maximum airflow using certified measuring devices. Make adjustments using the manual volume damper located upstream of the zone damper.

○ Series Fan zone terminals – Click Damper Full Close to override the zone damper to its fully closed

position. Wait 30 seconds after the damper is closed, select the select

On in the droplist. Click Apply. You must follow this procedure to prevent the fan from turning

backwards. When the fan starts, click

Cool Max to open the zone damper to its maximum position.

Fan's Lock value to checkbox, then

Check the zone for design cooling maximum airflow using certified measuring devices. See the zone terminal manufacturer's instructions to adjust the fan speed to meet design airflow requirements. After you set the fan speed, verify that the zone terminal plenum air intakes do not have a positive airflow. If so, adjust the manual volume damper located upstream of the zone damper so that the airflow is not positive or negative.

Note the zone’s name in the tree. You will need it when setting the system static pressure setpoint.

3 Check all branch duct terminal registers for design flow. If necessary, adjust the manual volume dampers

in the branch ducts.

4 On the zone’s Pressure Dependent Control > Details tab, click Cool Min to set the zone damper to its

cooling minimum position. Type the desired damper position next to

Cool Min to adjust the airflow to the

design value. If you do not have a design value, set the value to no less the 10% for minimum ventilation.

5 Parallel Fan Zone Terminals only - To adjust Parallel Fan airflow, make sure Cool Min is active, select the

Fan's Lock value to checkbox, then select On in the droplist. Click Apply. See the zone terminal

manufacturer's instructions on adjusting the fan speed to meet design airflow requirements. When finished, clear the

Fan's Lock value to checkbox.

6 Click Vent to set the zone damper to its ventilation position. Type the desired damper position next to

Vent to adjust the airflow to the design value. If you do not have a design value, leave the value at 50%

for minimum ventilation.

VVT Zone Controller 37

Page 42

Start-up

7 Series Fan Zone Terminals only - If the zone maximum heating airflow design requirements are the same

as cooling, the

Heating Max Damper Position should be 100%, same as the Cooling Max Damper Position. If the heating requirement is less than the cooling requirement, type the appropriate value in Heating Max Damper Position per the design requirements.

8 If the terminal has ducted reheat, click Reheat Min to force the zone to its reheat damper position. Type

the desired damper position next to

Reheat Min to adjust the airflow to its design reheat position.

9 If the zone maximum heating airflow design requirements are the same as cooling, skip this step. If they

are less than cooling, click

Heat Max to force the zone to its maximum heating position. Check the zone for design heating maximum airflow using certified measuring devices. Type the damper position next to Heat Max.

10 To set the heating minimum airflow, click Heat Min, then type the damper position. We recommend that

the sum of this setting for all zones in the system be equal to the minimum heat CFM requirements of the air source.

11 Repeat steps 1 through 10 for each zone until all zones have been balanced.

Step 3: Set the system static pressure

For the air source to deliver the required airflow, you must set the bypass controller's static pressure setpoint high enough to provide the demand but low enough to maintain reasonable noise levels. The bypass controller maintains static pressure by controlling a damper or a supply fan VFD. You need the following data to set the static pressure:

• The air source’s design maximum airflow in CFM (manufacturer’s data)

• The system’s design external static pressure (inches or water). This is the amount of static pressure that

the air source is designed to deliver at its maximum design airflow in CFM (supplied by the mechanical design engineer).

• The maximum cooling or heating (whichever is greater) CFM requirements for all zones connected to the

air source

NOTE The air source fan must have been tested and certified that it can deliver the above requirements.

The sum of the maximum CFM requirements of all zones will generally exceed the air source's maximum CFM rating by 10 to 20%. This is by design and based on a factor known as diversity. It works on the basis that under normal design heating and cooling conditions, not every zone will be 100% open. Knowing this, you will need to force open only zones whose sum CFM is equal to the unit design CFM. With the bypass damper fully closed (0%) or supply fan VFD at 100%, the bypass controller's static pressure should be the controlling setpoint.

To set the static pressure: 1 Starting with zone furthest from the air source and working towards it, add up the maximum design CFM

airflow of the zones until the sum equals the air source’s design CFM (+/-5%). Note each zone that you included.

2 For each zone noted in step 1, go to Properties > Equipment > Configuration > Service Configuration >

Pressure Dependent Control > Details tab. Click Cool Max or Heat Max (whichever has the highest

design max airflow) to force the damper to its maximum open position.

3 In the tree, select the Bypass controller, then go to Properties > Equipment > Status. Note the Static

Pressure value, then go to Unit Configuration > Bypass Control > Details tab.

○ If Damper Position is 0% or VFD Output is 100%, enter the static pressure in the Duct Static

Pressure Setpoint field.

○ If the Damper Position is not 0% or VFD Output is not 100%, enter the static pressure +.1” in the

Duct Static Pressure Setpoint field. Wait 1–2 minutes, then verify that the Damper Position is 0% or VFD Output is 100%. If not, repeat the process, adding .05” to the previous Duct Static Pressure Setpoint until the Damper Position is 0% or VFD Output is 100%.

38 VVT Zone Controller

Page 43

4 For each zone in the system that was balanced, go to its Pressure Dependent Control > Details tab, then

click

Automatic Control to return the zone to normal control.

5 In the tree, select the air source controller, then do one of the following.

a) For an RTU Open or WSHP Open controller, go to

Configuration > Service Test and disable Service Test and Fan Test

Properties > Equipment > Configuration > Service

b) For any equipment whose wiring was disconnected to insure that only the fan only was running,

reconnect it the wires for normal operation.

CAUTION You must complete steps 4 and 5 to prevent loss of temperature control to the space and to maintain normal operation of the system.

VVT Zone Controller 39

Page 44

Sequence of operation

Sensors

Notes

Space temperature sensors:

System

Space Temperature

Duct temperature sensors:

If the zone does not have ducted reheat, install a DAT sensor on the

Sequence of operation

The VVT Zone Controller supports 3 types of pressure-dependent terminal configurations:

• Single duct

• Series fan-powered

• Parallel fan-powered

The controller can operate as part of a linked VVT system or as a stand-alone controller.

Temperature sensors

The VVT Zone Controller supports the following temperature sensors:

• SPT Standard, Plus, or Pro

• T55

You can average up to 5 SPT communicating sensors.

Push the sensor's override button from 2 to 10 seconds to initiate a timed override.

If a network space temperature value is used, that value must be written to the BACnet space temperature point (system_spt) at 1 to 5 minute intervals or on a COV of 0.1°F.

To reference another zone as your space temperature input, read the BACnet point zone_temp by using the network point

• Duct Air Temperature (DAT)

10K Type II.

inlet of the damper.

• Supply Air Temperature (SAT)

If the zone has ducted reheat, install an SAT sensor downstream of the reheat source. The SAT is used in controlling the reheat.

The DAT/SAT determines the air source mode if Linkage communication fails or if the controller is stand-alone. See Air Source Mode Determination 47 (page ) for details.

See the Carrier Sensors Installation Guide for details on these sensors.

40 VVT Zone Controller

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Zone airflow control

The VVT Zone Controller provides pressure-dependent zone temperature control by modulating its built-in damper actuator to control the flow of primary air into the zone. The controller uses PID control to calculate the damper position based on the difference between the zone’s temperature and setpoints.

The air source mode determines if the primary air can meet the zone’s need. If the zone controller is in a linked system, the air source mode is determined by the air source. If the zone controller is stand-alone or if linkage communication fails, the mode is determined by the controller's SAT. See Air source mode determination (page 47). If the air source mode is the same as the zone’s local mode, the damper is positioned between the mode’s configurable minimum and maximum damper position. If not, the damper is positioned at the mode's minimum damper position to insure sufficient minimum airflow at the air source.

When the air source mode is Vent and the zone’s temperature demand is satisfied, the damper moves to its

Vent Position to increase airflow and ventilation to the space.

Single duct with reheat – The Reheat Min Damper Position allows an increase of primary airflow across the

terminal’s ducted heating coil when the terminal is operating its local heat while the air source mode is Cool. This provides the ability to lower the cooling minimum airflow limits while providing the necessary airflow when the terminal is heating to ensure design load conditions and electric heater minimum airflow.

Parallel fan terminals – The controller's Parallel Fan On Value determines when the fan turns on to increase airflow at the zone’s diffusers and prevent cold air from dumping into the zone when the system mode is Cool. This is achieved by increasing the volume and temperature of the air exiting the diffusers. Should the zone’s damper close below the primary air to increase total airflow and ventilation to the zone. The fan turns off when the damper position opens to 1% above the setpoint.

The fan also starts in Heat mode if the zone is configured for ducted heat as described in Zone reheat control (page 42).

Series fan terminals – The fan energizes when the air source fan is on if the zone controller is part of a linked system or in the unoccupied heat mode and the equipment fan is off. If the zone controller is stand-alone, the fan runs continuously. There is a fan start delay on transition to occupied, based on the Delay. Before the fan starts, the damper closes. The damper position must be less than 5% for 10 seconds before the fan starts to prevent the fan from starting backwards.

See Appendix B: VVT terminal modes (page 69).

Damper Actuator(s) – The VVT Zone Controller's built-in 35 in/lb actuator has a 205 second full travel time for 90° operation. For field retrofit applications, the actuator can be adjusted for a damper stroke between 30° and 90°, and it can be configured to move clockwise (default) or counterclockwise.

If the built-in actuator's torque is insufficient for large damper applications, the VVT Zone Controller's analog output can drive an external, 0-10 volt, high-torque actuator. Or, the controller can drive one or more additional slave actuators. A slave actuator must be mounted and configured to fully close the damper when the output signal is 0 volts. See Wiring field-supplied actuators to the analog output. (page 27)

Parallel Fan On Value, the parallel fan is energized to mix ceiling plenum air with the

Power Fail Start

VVT Zone Controller 41

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Sequence of operation

Zone reheat control

The VVT Zone Controller can be configured for one of the following Heat Types to meet the zone's heating requirements:

• Modulating Hot Water/Steam

• Two Position Hot Water/Steam

• Staged Electric Heat (2 stages for Series/Parallel Fan, 3 stages for Single Duct.)

• Combination Modulating Baseboard/Staged Electric Heat (2 stages for Series/Parallel Fan, 3 stages for

Single Duct.)

All of the above except Combination Modulating Baseboard/Staged Electric Heat can be ducted or nonducted (baseboard). For ducted heat and Combination Modulating Baseboard/Staged Electric Heat, an SAT sensor (33ZCSENSAT) must be installed in the duct downstream of the heat source. The controller has a configurable when the terminal’s ducted heat is operating.

If the network provides the OAT, heating can be disabled if the OAT rises above the configured Heating

Lockout Temperature.

Modulating Hot Water / Steam Heating Heat – The controller modulates a normally closed or normally open

hot water or steam valve connected to the discharge air heating coil. The valve opens and closes as needed to meet heating requirements. For ducted heat, the terminal’s heat supplements heat from the primary air source if it is in heating mode and is controlled so that the SAT does not exceed the (105°F default). For baseboard heating (non-ducted heat), the valve modulates to keep the zone’s temperature at the heating setpoint.

Two-Position Hot Water / Steam Heating Heat – The controller operates a normally closed or normally open hot water or steam valve connected to the discharge air heating coil. The valve opens and closes as needed to meet heating requirements. For ducted heat, the terminal’s heat supplements heat from the primary air source if it is in the heating mode and is controlled so that the SAT does not exceed the SAT (105°F default). For non-ducted (baseboard) heating, the valve is controlled to keep the zone’s temperature at the heating setpoint.

Electric Auxiliary Heat – The controller operates 1 or 2 stages of electric heat. For ducted heat, the terminal’s heat supplements heat from the primary air source if it is in the heating mode and is controlled so that the SAT does not exceed the the stages are controlled as needed to keep the zone’s temperature at the heating setpoint.

Combination Modulating Baseboard / Electric Heat – The controller can modulate a normally closed or normally open hot water or steam valve connected to a perimeter baseboard radiation system and control up to 2 stages of ducted electric heat. The valve modulates as needed to meet heating requirements. If the valve cannot meet the load, electric heat is used. The terminal’s electric heater supplements heat from the primary air source if it is in heating mode and is controlled so that the SAT does not exceed the

SAT (105°F default).

Parallel Fan Heat On Delay – For Parallel Fan terminals only, the controller has a configurable Parallel Fan Heat On Delay to save energy. During the delay (15 minute default), only the fan operates to recycle heat

from the ceiling plenum. If the heating requirement is not met by the end of the delay, reheat is enabled.

Fan Heat Off Delay – For fan-powered terminals, the controller has a configurable Fan Off Delay. After the heating coil de-energizes, the fan continues to run for the length of the delay to deliver to the zone any heat stored in the coil. The default delay of 2 minutes is optimal for ducted hot water coils. For ducted electric heat coils, the nominal delay is approximately 1 minute. For baseboard and non-ducted heat, the delay should be set at 0.

This feature applies to parallel fan terminals in both occupied and unoccupied mode and series fan terminals in the unoccupied mode if the air source fan is off.

Maximum Heating SAT for supply air temperature control. The zone controller monitors the (SAT)

Maximum Heating SAT

Maximum Heating

Maximum Heating SAT (105°F default). For non-ducted (baseboard) electric heat,

Maximum Heating

42 VVT Zone Controller

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Demand control ventilation (DCV) and dehumidification using optional sensors

The VVT Zone Controller’s RH/CO2 input supports an optional CO2 sensor or Relative Humidity (RH) sensor. The sensor can have a 5-volt maximum output. The range is configurable as either 0–5 or 1–5 volts (1–5 volt supports 4–20 mA sensors with a 250 ohm resistor). The controller's low and high sensor input configuration allows for a wide range of sensors.

The controller can also support both DCV and dehumidification functions, by using a system RH or CO2 sensor input connected to another controller.

NOTE If the connected sensor and/or system sensor value are used by the air source through Linkage, set the appropriate control type to or

Maximum RH Override Airflow to 0.

Demand Control Ventilation (DCV) – Requires CO2 sensor

The zone controller monitors the CO2 sensor and can override the temperature control to respond to increasing CO2 levels when the zone is occupied. If the sensor’s value exceeds the and the air source is in cooling or ventilation mode, the controller increases airflow to the zone at a base rate defined by ASHRAE, and then proportionally increases ventilation if the CO2 level continues to increase. If the sensor's value exceeds the Damper Position.

When the zone is unoccupied, the Cooling Min Damper Position and Heating Min Damper Position provide base ventilation.

If the controller is configured for reheat, the heating setpoint is temporarily increased to a value halfway between the heating and cooling setpoints. If the zone temperature drops below the heating setpoint, the DCV override is temporarily suspended and the damper returns to normal control until the zone temperature is satisfied.

Dehumidification – Requires RH sensor

The zone controller monitors the RH sensor and can provide dehumidification if the sensor's value exceeds the

Occupied RH Control Setpoint. If the zone is occupied and does not require heating, and the air source is operating in a cooling mode and providing primary air with a sufficiently low dew point, the controller overrides the damper control to increase airflow to the zone. During the dehumidification mode, the heating setpoint is temporarily increased to a value halfway between the heating and cooling setpoints to prevent overcooling the zone. The controller uses a PID control loop to provide dehumidification. The controller has a

Maximum RH Override Airflow setting to prevent excessive airflow during dehumidification.

NOTE If both control functions are enabled, the zone will control to the greatest calculated damper position of

the three values (temperature, RH, or IAQ

Enable. If you do not need local control at the zone, set DCV Max Vent Airflow

DCV Start Ctrl Setpoint

DCV Max Ctrl Setpoint, the controller modulates the damper to its DCV Max Vent

VVT Zone Controller 43

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Sequence of operation

Occupancy

The VVT Zone Controller's operation depends on the zone's occupancy state as determined by occupancy schedules or a remote occupancy override.

Occupancy Schedules – An occupancy schedule can be one of the following:

• A local schedule set up directly in the controller using a BACview or Field Assistant.

• A network schedule from an i-Vu internal router. The VVT Zone Controller must be networked to an i-Vu

Open Router or an i-Vu internal router.

• A System Occupancy network point. This point links the controller occupancy to another controller in the

network so that multiple zones can follow the occupancy of another VVT Zone or other controller on the network.

To set up occupancy schedules, you first define a schedule for each day of the week and then define schedules for the exceptions, such as holidays. The exceptions can be based on a date, a date range, or a week and day.

NOTES

• The Occupancy Schedules

• A network schedule downloaded from i-Vu will overwrite a local schedule that was set up in a BACview or

Field Assistant.

Remote Occupancy Override – The controller monitors its Remote input that is typically connected

to the isolated, dry contact of an occupancy sensor located in the zone. The controller can override the occupancy state based on whether or not the space is actually occupied. If the occupancy sensor contact is in

the same state as schedule. If the contact is in the opposite state, it overrides the zone into the unoccupied mode. The input can be configured for normally closed or normally opened contact types and is set to Open by default so that it does not affect the controller occupancy operation if left unused.

Occ Override Normal Logic State setting, the zone follows its normal occupancy

property must be enabled (default).

Learning Adaptive Optimal Start – This function gradually adjusts the unoccupied setpoints over a

specified period of time to achieve the occupied setpoint by the time scheduled occupancy begins. This

learning adaptive algorithm uses the learned heating capacity and learned cooling capacity

values to calculate the effective setpoints prior to the occupied start time. The algorithm calculates a learned

cooling and heating capacity during the previous unoccupied time. Set the Learning Adaptive

Optimal Start Optimal Start

Adjustment amounts are defined in the thermographic color fields located directly above the

Points

graph under Setpoints.

BAS On/Off Schedules

recovery period from 1 to 4 hours in Optimal Start. When the Learning Adaptive

routine runs, adjustments are based on the color that is achieved when occupancy begins.

Effective Set

– This function allows third party control of the controller occupancy. Occupancy

must be set to Disable to use this function. When set to Occupied or Unoccupied,

Optimal Start is automatically disabled.

44 VVT Zone Controller

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Alarms

Space Temp Sensor Alarm – The VVT Zone Controller monitors each space temperature sensor and the

network input for space temperature. If no valid space temperature value is available, the controller generates an alarm and disables all local heating or cooling. The controller modulates the damper to the minimum heat, minimum cool, or ventilation position based on the air source mode. Normal operation resumes when the controller detects a valid sensor value.

Space Temperature Alarm – The controller generates an alarm if the space temperature exceeds the alarm setpoint. The occupied alarm setpoint is the configurable

Occupied Alarm Hysteresis (5°F default) subtracted from and added to the configured occupied heat and cool setpoints. The configurable unoccupied high and low alarm setpoints have a fixed 10 minute alarm delay. When a transition from unoccupied to occupied occurs or the occupied temperature setpoints are changed, causing an alarm condition, the controller automatically calculates an alarm delay of 10 minutes for each degree of change. The delay prevents unnecessary alarms and gives the zone time to correct the alarm condition. The alarm returns to normal when the space temperature goes between the current mode’s setpoints.

Supply Air Temperature Alarm – The controller generates an alarm if the SAT exceeds the configured High SAT Alarm Limit (120°F default) or falls below the Low SAT Alarm Limit (45°F default) for more than 5

minutes. The hysteresis for return to normal is 1°F.

Space Relative Humidity Alarm – If a Space Relative Humidity (RH) sensor is installed, the controller generates an alarm if the sensor's value exceeds the

Occ High RH Alarm Limit (100% rh default) or the Unocc

High RH Alarm Limit (100% rh default). The controller provides a 30-minute alarm delay during unoccupied

periods. During occupied periods, the controller uses the

Occ High RH Alarm Limit. When a transition from unoccupied to occupied occurs or the occupied high alarm limit is lowered causing an alarm condition to occur, the controller automatically calculates an alarm delay of 5 minutes per %RH multiplied by the amount of the change. The delay prevents unnecessary alarms and gives the zone time to correct the alarm condition. The hysteresis for return to normal is 3% RH.

Indoor Air Quality Alarm – If a CO2 sensor is installed, the controller generates an alarm during occupied periods if the sensor's value exceeds the Occupied High CO2 Alarm Limit. When a transition from unoccupied to occupied occurs, or if the occupied alarm limit is changed to a value that causes an alarm condition to occur, the controller automatically calculates an alarm delay based on the error from setpoint (15 minutes minimum, 4 hours maximum). The delay prevents unnecessary alarms and gives the zone time to correct the alarm condition. To disable the IAQ alarm, set

Occupied High CO2 Alarm Limit to 0. The default value is

1100ppm. The hysteresis for return to normal is 100ppm.

Filter Alarm – For series or parallel fan-powered terminals, the controller monitors the accumulated hours of fan operation and generates an alarm when the

Filter Runtime hours exceed the configured Filter Service Alarm Timer limit. The default value is 0 hours which disables the alarm. The alarm can be reset by setting Reset Filter Alarm to On or resetting the configured alarm limit to 0 hours.

Airside Linkage Alarm – The slave zone controller generates an alarm if it does not receive linkage

information for 5 minutes. If the controller is the VVT Master, it generates an alarm if it does not communicate with its air source for 5 minutes. A return-to-normal is generated after successful Linkage communication resumes.

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Sequence of operation

Demand limiting

Demand limiting is a cost-saving strategy to reduce energy consumption. The strategy expands the setpoints when the system reaches one of 3 levels of consumption. With the expanded setpoints, the equipment works less, thereby saving energy.

If the VVT Zone Controller receives a demand limit signal through the network, it expands its setpoints based on the demand level. The default amount is 1°F for demand level 1, 2°F for demand level 2, or 4°F for demand level 3.

Linkage

The VVT Master gathers the following information from the slave zone controllers: occupancy status, setpoints, zone temperature, relative humidity, CO Master performs mathematical calculations and algorithms on the data and then sends the composite information to the air source. The VVT Master receives information from the air source such as mode, supply air temperature, and outside air temperature, if present, and passes that information to all linked controllers.

The VVT Master determines system operation by prioritizing heating and cooling requirements from all the zones based on their occupancy and demand. The VVT Master scans the system continuously to determine if any zones are occupied. Occupied zones are a higher priority than unoccupied zones. The VVT Master evaluates all the occupied zones' heating or cooling demands and sends a request to the air source for:

• Cooling, if the number of occupied zones with cooling demands exceeds the number of occupied zones

with heating demands, and the demand is greater than or equal to the number of configured

Callers

• Heating, if the number of occupied zones with a heating demand exceeds or is equal to the number of

Linkage Callers

If no zones are occupied or no occupied zones require heating or cooling, the VVT Master performs the evaluation described above for the unoccupied zones.

The VVT Master then gathers the following information and sends it to the air source:

• The setpoints and zone temperature from the zone with the greatest demand for the requested air

source mode (heating or cooling). (This zone is called the reference zone.)

• The system occupancy status

• Most open damper position from any zone

• RH and CO

values (if applicable)

The air source responds by sending the air source mode, supply air temperature, and outside air temperature. The air source verifies the mode by comparing its supply air temperature to the space temperature received through Linkage. See the air source documentation for operation and parameters used to verify its mode. This verification allows the VVT system to determine if the desired air source mode is actually being provided. For example, if the VVT Master sends a request for heating and the air source does not have heat or it’s heat has failed, the air source's actual mode indicates that and its current mode is sent to the zones so that they can control accordingly.

The system remains in that mode until all zones of that demand are satisfied or until a fixed 30 minute mode reselect timer causes a forced re-evaluation of the system. If there is no demand for the opposite mode, the reselect timer starts again and the current mode continues until all zones are satisfied or until the reselect timer expires, repeating the process. If there is a demand for the opposite mode, the VVT Master sends the reference zone's space temperature and setpoints to the air source and restarts the reselect timer. The air source re-evaluates its demand based on the new information and goes to the Vent mode until the new mode can be verified as described above. The amount of time this takes is determined by the air source’s operating parameters.

level, damper position, and optimal start data. The VVT

Linkage

46 VVT Zone Controller

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The VVT Master continuously evaluates the system and updates the air source with the most current system demand. Based on the evaluation, the reference zone can change from one zone to another. The evaluation process continues until there is no demand from any zone or the 30 minute timer causes a re-evaluation of the system conditions.

If no heating or cooling is required or the current air source mode is satisfied, the VVT Master calculates the weighted average of the occupied and unoccupied heating and cooling setpoints. It also calculates a zone temperature that is midway between the setpoints (occupied or unoccupied based on the system’s current occupancy status). This information, plus the occupancy status, is sent to the air source so that its current mode is disabled and the unit ceases heating or cooling operation. If the system is occupied, the air source fan and OA damper, if applicable, operate to maintain proper ventilation.

Air source mode determination

Linked air source modes – In a linked system, the air source determines its operating mode and qualifies

that mode based on its own SAT. The following modes can be sent by the air source depending on its configuration:

• OFF – Air source fan is off.

• WARMUP – Air source fan is on and providing first cycle of heat when changing from unoccupied to

occupied.

• HEAT – Air source fan is on and providing heat.

• FREECOOL – Air source fan is on and providing cooling using economizer only.

• COOL – Air source fan is on, and cooling is provided by economizer and mechanical cooling.

• PRESSURIZATION – Fire-Life safety override input is active. Air source fan is on providing 100 percent

outside air. Mechanical heating and cooling may be disabled.

• EVACUATION/SHUTDOWN – Fire-Life safety override input is active. Air source fan is off.

• VENT – Air source fan is on, economizer providing ventilation without heating or cooling, providing neutral

supply air temperature.

See the air source’s installation manual for specific operation.

Local air source modes – If the zone controller is stand-alone, or if linkage communication fails, the zone controller assumes that the fan is always on and monitors its SAT sensor to determine if the primary air source is providing heating, cooling, or recirculating air in a fan-only or ventilation mode.

• HEAT – For Series or Parallel Fan controllers when the zone terminal fan is off or for single duct

controllers: The zone’s local heat has not operated for at least 5 minutes, and the SAT is more than 5°F warmer than the space temperature. If the terminal fan is on, the SAT must be at least 8°F more than the space temperature. In all cases, Heat mode is maintained until the SAT drops 2°F below the space temperature.

• VENT – The zone’s local heat has not operated for at least 5 minutes and the SAT is between 65 and

80°F.

• COOL – The zone’s local heat has not operated for at least 5 minutes, the current mode is not Heat or

Vent, and the SAT is less than 65°F.

See Appendix B: VVT terminal modes (page 69).

VVT Zone Controller 47

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Troubleshooting

If this LED is on...

Status is...

Power

DO#

CCW

If Run LED shows...

And Error LED shows...

Status is...

Run

Error

Run

Troubleshooting

If you have problems mounting, wiring, or addressing the VVT Zone Controller, contact Carrier Control Systems Support.

LED's

The LED's on the VVT Zone Controller show the status of certain functions.

The VVT Zone Controller has power

The VVT Zone Controller is receiving data from the network segment

The VVT Zone Controller is transmitting data over the network segment

The digital output is active

The Run and Error LED's indicate controller and network status.

1 flash per second

2 flashes per second

2 flashes per second 2 flashes,

2 flashes per second 3 flashes,

2 flashes per second On Two or more devices on this

2 flashes per second 1 flash per second The controller is alone on the

The actuator motor is turning clockwise

The actuator motor is turning counterclockwise

1 flash per second, alternating with the

Off Normal

alternating with

then off

The controller files are archiving. Archive is complete when LED LED stops flashing.

Five minute auto-restart delay after system error LED

The controller has just been formatted

network have the same MS/TP network address

network

48 VVT Zone Controller

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If Run LED shows...

And Error LED shows...

Status is...

stopped

Run

2 flashes per second

On Exec halted after frequent system

errors, due to:

• Controller halted

• Program memory corrupted

• Address conflicts - duplicate

MS/TP MAC addresses

• One or more programs

5 flashes per second On Exec start-up aborted, Boot is

running

5 flashes per second Off Firmware transfer in progress,

Boot is running

7 flashes per second 7 flashes per second,

alternating with

14 flashes per second 14 flashes per second,

alternating with

LED

Ten second recovery period after brownout LED

Brownout

On On Failure. Try the following solutions:

• Turn the VVT Zone Controller

off, then on.

• Download memory to the VVT

Zone Controller.

• Replace the VVT Zone

Controller.

Serial number

If you need the VVT Zone Controller's serial number when troubleshooting, the number is on:

• a sticker on the back of the main controller board

• a Module Status report (modstat) from your user interface

Replacing the VVT Zone Controller's battery

The VVT Zone Controller's 10-year Lithium CR2032 battery provides a minimum of 10,000 hours of data retention during power outages.

If the VVT Zone Controller experiences a power outage and the control program stops functioning, replace the battery.

1 Remove the VVT Zone Controller's cover. 2 Remove the battery from the controller, making note of the battery's polarity. 3 Insert the new battery, matching the battery's polarity with the polarity indicated on the controller's cover. 4 Replace the VVT Zone Controller's cover. 5 Download the VVT Zone Controller.

VVT Zone Controller 49

Page 54

Compliance

FCC Compliance

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

CAUTION Changes or modifications not expressly approved by the responsible party for compliance could void the user’s authority to operate the equipment.

CE Compliance

WARNING This is a Class A product. In a domestic environment, this product may cause radio interference in

which case the user may be required to take adequate measures.

BACnet Compliance

BACnet® is a registered trademark of ASHRAE. ASHRAE does not endorse, approve or test products for compliance with ASHRAE standards. Compliance of listed products to requirements of ASHRAE Standard 135 is the responsibility of the BACnet manufacturers Association (BMA). BTL® is a registered trademark of the BMA.

50 VVT Zone Controller

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i-Vu / Field Assistant:

Navigation:

Properties > Equipment > Status HOME

STATUS

Point Name/Description

Range

Terminal Mode

Term Type Space Temperature - Prime Variable

Damper Position

Supply Air Temperature

Heating Capacity

Baseboard Heating Capacity

Outdoor Air Temperature Fan

Term Type

Parallel Fan

Series Fan

CO2 (ppm)

Optional Sensor Type

IAQ Control

Space Relative Humidity

Optional Sensor Type

RH Control

Shutdown

Active

Appendix A: VVT Zone Controller Points/Properties

Status

NOTE Engineering units shown in this document in the defaults and ranges are strictly for reference. You

must enter an integer only.

BACview:

– The controller's current operating status. OFF

– The type of zone terminal that the controller is installed on. Single Duct

– The space temperature value currently used for

control.

the zone is configured for Combination Baseboard and Ducted Heat.

source, if available, or from another network source.

– The status of the terminal fan if

HEATING WARM-UP VENT COOLING DEHUMIDFY REHEAT PRESSURIZE EVACUATE SHUTDOWN IAQ OVERRIDE AIR BALANCING

Parallel Fan Series Fan

-56 to 245°F

R: – The current damper position. 0 to 100%

R: – The current supply air temperature. -56 to 245°F

R: – The current reheat capacity when the zone is configured for reheat. 0 to 100%

R: – The current modulating baseboard heat capacity when

0 to 100%

R: – The current outdoor air temperature from a linked air

-56 to 245°F

. On/Off

– The current IAQ value if

is set to

– The current space relative humidity if

is set to

– When

delays and close the damper.

VVT Zone Controller 51

R: . 0 to 5000ppm

R: . 0 to 100%rh

D: , disables all control functions, at normal equipment time

Inactive

Inactive/Active

Page 56

Appendix A: VVT Zone Controller Points/Properties

Navigation:

Properties > Equipment > Configuration > Unit Configuration HOME

CONFIG

UNIT

Point Name/Description

Default/Range

Heat Enable

Parallel Fan Heat On Delay

Term Type

Parallel

Term Type

Single Duct

Fan Off Delay

e terminals only. The amount of time the terminal fan continues

Maximum Heating SAT

DCV Max Vent Damper Pos Filter Service Alarm Timer

Filter Alarm

Pushbutton Override

Setpoint Adjust

Setpoint Adjustment Range

Heating Lockout Temperature

Power Fail Restart Delay Occupancy Schedules

Enabled

Disabled

BAS On/Off

System Occupancy

T55 Override Duration

Pushbutton Override

Enable

Unit Configuration

i-Vu / Field Assistant: BACview:

– The delay in reheat coming on after the zone has a heating demand. If the to heat the space prior to bringing mechanical reheat. If the we recommend that you set this value to 1 minute.

to operate after a heating demand is satisfied.

heat is operating. Ducted type supplemental heat is controlled so that it will not exceed this limit.

override the damper to. When active, the damper modulates to the temperature control position or the IAQ override position, whichever is greater.

generating a

. Set to 0 to disable the alarm.

local space temperature sensor.

, this allows the fan time to use plenum air

– The amount of time a Parallel or Series fan will run before

D: – Enables the reheat function.

Enable

Disable/Enable

15 minutes

0 to 30 minutes

120 seconds

D: – Fan-typ

0 to 180 sec

105°F

D: – The maximum supply air temperature allowed while ducted

80 to 140°F

70%

D: – The maximum damper position that the IAQ function can

0 to 100%

0 hr

0 to 9999 hr

D: – Enables or disables the use of a pushbutton override from a

Enable

Disable/Enable

setpoint on the local SPT sensor.

power is restored. This is typically used to prevent excessive demand when recovering from a power failure. Applies to Series Fan start delay when system mode transitions from unoccupied to occupied. A delay of no greater than 120 seconds is recommended for Series Fan applications.

– If

, the controller stores and follows a schedule sent

over the network or programmed locally through a BACview or Field Assistant. If

, the controller occupancy is controlled from the

network point.

– The amount of time that the controller runs in the occupied

mode when a user presses the T55 sensor's override button for 1 to 10 seconds.

must be set to

D: – Enables the setpoint adjustment slider on the SPPL space sensor.

Enable

Disable/Enable

D: - The maximum amount that a user can adjust the

2°F

0 to 5°F

70°F

D: – Supplemental reheat is disabled if outside air

-60 to 150°F

60 seconds

D: – How long the controller delays normal operation after the

60 to 600 seconds

Enable

Disable/Enable

1 hr

1 to 4 hr

52 VVT Zone Controller

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Point Name/Description

Default/Range Local Sensor Calibration

Space Temperature

Space Temp Calibration

Supply Air Temperature

Supply Air Temp Calibration Space Relative Humidity –

Relative Humidity Calibration

Status > Space Relative Humidity

Navigation:

Properties > Equipment > Configuration > Setpoints HOME

CONFIG

SETPOINT

Heating

Cooling

– The current space temperature. -56 to 245°F

– A calibration offset value to allow the local space temperature sensor to be adjusted to match a calibrated standard measuring the temperature in the same location.

temperature sensor to be adjusted to match a calibrated standard measuring the temperature in the same location.

present.

– You can enter a calibration offset for the relative humidity. The offset is added to or subtracted from the controller's RH input value, and the calculated value is shown in the

Setpoints

0°F

-9.9 to 10°F

R: – The current supply air temperature. -56 to 245°F

0°F

D: – A calibration offset value to allow the supply air

-9.9 to 10°F

R: Displays the current value of relative humidity sensor, if

0 to 100%

-15 to 15%rh

i-Vu / Field Assistant: BACview:

Select a color band on the setpoint graph to see the current setpoints in the descriptions below.

and

fields. See setpoint

VVT Zone Controller 53

Page 58

Appendix A: VVT Zone Controller Points/Properties

Occupied Setpoints

Default

Demand Level

Point Name/Description

Occupied

1 2 3

Occupied Heating

Occupied Cooling

Occupied Heating 1

Occupied Heating

Occupied Heating 2

Occupied Cooling 1

Occupied Cooling

Occupied Cooling 2

Unoccupied Setpoints

Point Name/Description

Range

Unoccupied Heating

Unoccupied Cooling

The occupied setpoints described below are the setpoints under normal operating conditions. The Demand Level 1–3 setpoints apply if demand limiting is used.

Demand limiting is a cost-saving strategy to reduce energy consumption. The strategy expands the occupied heating and cooling setpoints when the system reaches one of 3 levels of consumption. With the expanded setpoints, the equipment works less, thereby saving energy. By default, Demand Level 1 expands the occupied heating and cooling setpoints by 1°F, Demand Level 2 by 2°F, and Demand Level 3 by 4°F. If the occupied heating or cooling setpoints change, the (effective) demand level setpoints automatically change by the same amount. See Sequence of Operation 40 (page ) for more information.

Range: 40 to 99°F

The heating setpoint the controller maintains while in occupied mode.

The cooling setpoint the controller maintains while in occupied mode.

– Light Blue The space temperature must be less than this value for the VVT Master to consider the zone a heating caller. The zone remains a heating caller until the space temperature rises above the that this value be set no lower than .5°F below the

The space temperature must be less than this value to generate a low space temperature alarm.

– Yellow The space temperature must be greater than this value for the VVT Master to consider the zone a cooling caller. The zone remains a cooling caller until the space temperature drops below the that this value be set no lower than .5°F above the

The space temperature must be greater than this value before a high space temperature alarm is generated.

setpoint. We recommend

setpoint.

setpoint. We recommend

setpoint.

70°F – Green

74°F – Green

69°F

67°F – Dark Blue

75°F

77°F – Orange

69°F 68°F 66°F

75°F 76°F 78°F

68°F 67°F 65°F

66°F 65°F 63°F

76°F 77°F 79°F

78°F 79°F 81°F

The heating setpoint the controller maintains while in unoccupied mode.

The cooling setpoint the controller maintains while in unoccupied mode.

54 VVT Zone Controller

D: – Gray

55°F

D: – Gray

40 to 90°F

90°F

55 to 99°F

Page 59

Unoccupied Heating 1

Unoccupied Heating

Unoccupied Heating 2

Unoccupied Cooling 1

the zone a cooling caller. The zone remains a cooling caller until the space temperature

Unoccupied Cooling

Unoccupied Cooling 2

Point Name/Description

Range

Heating Capacity

Heating Design Temp

Cooling Capacity

Cooling Design Temp

tem must run constantly to maintain comfort. This information is available in

The space temperature must be less than this value before a low space temperature alarm is generated.

– Yellow

The space temperature must be greater than this value for the VVT Master to consider

drops below the lower than .5°F above the

The space temperature must be greater than this value before a high space temperature alarm is generated.

setpoint. We recommend that this value be set no

setpoint.

setpoint. We recommend that this value be set no

setpoint.

– Used for Optimal Start, this is the rate at which the zone temperature changes when the heating system runs at full capacity to maintain designed occupied heating setpoint.

– The geographically-based outdoor air temperature at which the heating system must run constantly to maintain comfort. This information is available in ASHRAE publications and most design references.

– Used for Optimal Start, this is the rate at which the zone temperature changes when cooling system runs at full capacity to maintain designed occupied cooling setpoint.

– The geographically-based outdoor air temperature at which the cooling sys ASHRAE publications and most design references.

D: – Dark Blue

D: – Orange

54°F

40 to 99°F

52°F

40 to 99°F

91°F

40 to 99°F

93°F

40 to 99°F

5°F/hr

0 to 120°F/hr

0°F

-100 to 150°F

5°F/hr

0 to 140°F/hr

100°F

-100 to 150°F

VVT Zone Controller 55

Page 60

Appendix A: VVT Zone Controller Points/Properties

Point Name/Description

Range

Hysteresis

Time

Temp

Occupied heating setpoint: 70°

75.5°

70.5°

Occupied cooling setpoint: 76°

.5° hysteresis

Learning Adaptive Optimal Start

learned

heating capacity

learned cooling capacity

Learning

Adaptive Optimal Start

Optimal Start

Learning Adaptive Optimal Start

Effective Set Points

Setpoints

Effective Setpoints

Point Name/Description

Heating –

Heating

Default/Range

For example, the following graph shows the zone color that results as the zone temperature departs from and returns to the acceptable range in a zone with the following settings:

• Color Change Hysteresis = .5° (applies as the temperature returns to the

acceptable range)

• Occupied cooling setpoint = 76°

• Occupied heating setpoint = 70°

0.5°F

0.2 to 1.0°F

to achieve the occupied setpoint by the time scheduled occupancy begins. This learning adaptive algorithm uses the

The algorithm calculates a learned cooling and heating capacity during the previous unoccupied time. Set the

routine runs, adjustments are based on the color that is achieved when occupancy begins. Adjustment amounts are defined in the thermographic color fields located directly above the

setpoint adjusted by any offset that may be in effect.

– This function gradually adjusts the unoccupied setpoints over a specified period of time

and

recovery period from 1 to 4 hours in

values to calculate the effective setpoints prior to the occupied start time.

. When the

graph under

(Occupied or Unoccupied, depending on mode) The current programmed

R: 0 to 120°F

56 VVT Zone Controller

Page 61

Point Name/Description

Default/Range

Cooling –

Cooling

Learned cooling capacity

Learned heating capacity

Min Setpoint Separation

Optimal Start

NOTE

Properties

Equipment

Maintenance

Occupancy

BAS On/Off

Unoccupied

Occupied

Optimal Start Type

None*

Temp Compensated*

Learning Adaptive Start

None

Temp Compensated

Heat Start K factor (min/deg)

Optimal Start Type

Temp Compensated

Cool Start K factor (min/deg)

Optimal Start Type

Temp Compensated

Standby Offset

Occupied RH Control Setpoint

Optional Sensor Type

RH Sensor

RH Control

Enable

Cool

Vent

Cooling

Vent

DCV Start Ctrl Setpoint

Optional Sensor Type

IAQ Sensor

DCV Control

Enable

setpoint adjusted by any offset that may be in effect.

that is required to bring the space temperature down to the occupied cooling setpoint prior to the occupied time.

that is required to bring the space temperature up to the occupied heating setpoint prior to the occupied time.

and cooling setpoints.

begin to adjust the effective setpoints to achieve the occupied setpoints by the time scheduled occupancy begins. Enter 0 to disable Optimal Start.

Options:

an occupied mode. Setpoints do not ramp, but change immediately from unoccupied to occupied values.

occupied time, which is calculated by the current error between space temperature and the appropriate heating or cooling setpoint. At that time, the setpoints do not ramp, but change immediately from unoccupied to occupied values.

unoccupied setpoints over a specified period of time to achieve the occupied setpoint by the time scheduled occupancy begins.

Start transition factors to 0.

minutes per degree that the equipment starts before the occupied period when the space temperature is below the occupied heating setpoint (including any setpoint offset).

minutes per degree that the equipment starts before the occupied period when the space temperature is above the occupied cooling setpoint (including any setpoint offset).

occupancy sensor indicates that the space is unoccupied. If 0, the unoccupied setpoints are used.

set to be function can be active.

This value should be set to approximately 75 ppm above the outdoor air CO2 level.

(Occupied or Unoccupied, depending on mode) The current programmed

– The cooling capacity learned by Learning Adaptive Optimal Start

– The heating capacity learned by Learning Adaptive Optimal Start

– The earliest time, prior to occupancy, at which the Optimal Start function may

Optimal Start is automatically disabled when

is set to either

– The method used to change from unoccupied to occupied setpoint.

– Unit will not change to occupied setpoint until the scheduled time or the unit goes into

– Unit changes to occupied setpoints at a variable time prior to the

– Unit gradually changes to occupied setpoints by adjusting the

When selecting

– If

, you MUST set all Learning Adaptive Optimal

– If

, this is the relative humidity setpoint during occupancy. The air source mode must

and the terminal mode must be

– If

is set to

, this is the value that the CO2 sensor must exceed to begin the DCV control function.

is set to

before the dehumidification

and

is set to

0 to 120°F

D: – Minimum separation that must be maintained between the heating

4°F

2 to 10°F

1 hr

0 to 4 hr

Temperature Compensated

None Temperature Compensated Learning Adaptive

15.00

D: , this is the time in

0 to 99

D: , this is the time in

15.00

0 to 99

0°F

D: – The value by which the occupied setpoints are expanded when the space

0 to 15°F

65%rh

0 to 100%rh

500ppm

0 to 9999 ppm

VVT Zone Controller 57

Page 62

Appendix A: VVT Zone Controller Points/Properties

Point Name/Description

Default/Range

DCV Max Ctrl Setpoint

Optional Sensor Type

IAQ Sensor

DCV Control

Enable

DCV MAX Vent Airflow

Parallel Fan ON Value

Terminal Type

Parallel Fan

e’s airflow control setpoint decreases below this value, the parallel fan turns on to

Occupied Min Airflow

Navigation:

Properties > Equipment > Configuration

Alarm Configuration

HOME

CONFIG

ALARMS

Point Name/Description

Default/Range Space Temperature Alarm

Occupied Alarm Hysteresis

Setpoint Alarm Delay (min/deg) Unoccupied Low SPT Alarm Limit

Space Temperature Alarm

Unoccupied High SPT Alarm Limit

Space Temperature Alarm

Supply Air Temperature Alarm

Low SAT Alarm Limit

Supply Air Temp Alarm

High SAT Alarm Limit

Supply Air Temp Alarm

– If

, this is the value that the CO2 level must exceed to begin the IAQ function to control the

damper to

– If when the zon increase airflow, ventilation, and prevent cold air dumping into the zone. If the airflow control setpoint rises above this value by more than 1 cfm, the parallel fan turns off. We recommend this value be set to approximately 10% above the disable this function.

is set to

and

and the zone does not require heating,

setpoint. Set to 0 to

is set to

Alarm Configuration

i-Vu / Field Assistant: BACview:

– This value is added to the effective cooling setpoints and subtracted from the effective heating setpoints as output from the microblock. These values establish the occupied high and low limits that the space temperature must exceed before an occupied SPT alarm is generated. The alarm returns to normal when the space temperature drops below the high effective setpoint or rises above the low effective setpoint.

temperature alarm is generated when the controller transitions to the occupied mode. The delay time equals this value multiplied by the difference between the sensor temperature and occupied alarm setpoint plus 15 minutes.

–The value that the space temperature must drop below to generate a fixed hysteresis of 1° F for return to normal.

– The value that the space temperature must exceed to generate a fixed hysteresis of 1° F for return to normal.

in the unoccupied mode. There is a

5°F

0 to 20°F

D: – Determines the amount of delay before an occupied space

10 minutes

0 to 30 minutes

45°F

35 to 90°F

95°F

45 to 100°F

1050ppm

0 to 9999 ppm

0 cfm

0 to 99999 cfm

generate a normal.

58 VVT Zone Controller

– The value that the supply air temperature must drop below to

. There is a fixed hysteresis of 1° F for return to

– The value that the supply air temperature must exceed to

. There is a fixed hysteresis of 1° F for return to

45°F

15 to 90°F

120°F

90 to 175°F

Page 63

Point Name/Description

Default/Range Space Humidity Alarm

Occ High RH Alarm Limit

Space Humidity Alarm

RH Control

Enable

Alarm Delay (min/%RH) Unocc High RH Alarm Limit

Space Humidity Alarm

RH Control

Enable

IAQ/Ventilation Alarm

Occupied High CO2 Alarm Limit

Indoor Air Quality Alarm

DCV Control

Enable

Alarm Delay (min/ppm)

Alarms Displayed on SPT Sensor

Space Temperature Alarm

Supply Air Temp Alarm Supply Air Temp Alarm

Dirty Filter Alarm

Space High Humidity Alarm

Space Humidity Alarm

Space High CO2 Alarm

Indoor

Air Quality Alarm

– The value that the relative humidity sensor must exceed to

generate a

in the occupied mode if

is set to

There is a fixed hysteresis of 5%rh for return to normal.

alarm is generated when the controller transitions to the occupied mode. The delay time equals this value multiplied by the difference between the sensor RH value and the occupied RH setpoint plus 15 minutes.

– The value that the relative humidity sensor must exceed

to generate a

in the unoccupied mode if

is set to

. There is a fixed hysteresis of 5%rh for return to normal.

– The value that the CO

generate an

in the occupied mode if

. There is a fixed hysteresis of 100ppm for return to normal.

– The fractional portion of an hour determining the amount of delay before an indoor air quality alarm is generated when the controller transitions to the occupied mode. The delay time equals this value multiplied by the difference between the sensor CO

value and the setpoint plus 15 minutes.

– If set to display, shows the alarm indicator on the SPT Pro

sensor if the space temperature alarm is active.

– Shows the alarm indicator on the SPT Pro sensor if the is active.

sensor must exceed to

is set to

100%rh

45 to 100%rh

5 minutes

D: – Determines the amount of delay before an occupied RH

0 to 30 minutes

100%rh

45 to 100%rh

1100ppm

0 to 9999 ppm

.25 hr (15 minutes)

0 to 1.0 hr (60 minutes)

Ignore

Ignore/Display

Ignore

Ignore/Display

Pro Plus' sensor if a dirty filter alarm is active.

Pro and SPT Pro Plus' sensor if the

VVT Zone Controller 59

– If set to display, shows the alarm indicator on the SPT Pro and SPT

– If set to display, shows the alarm indicator on the SPT

is active.

– Shows the alarm indicator on the SPT Pro sensor if the

is in alarm.

Display

Ignore/Display

Ignore

Ignore/Display

Ignore

Ignore/Display

Page 64

Appendix A: VVT Zone Controller Points/Properties

Navigation:

Properties > Equipment > Configuration > Service Configuration HOME

CONFIG > SERVICE

Point Name/Description

Default/Range

Terminal Type

Damper Size (in.)

Damper Area (sq.in.)

External Actuator Enable

Heat Type

None Modulating Two Position Staged EH Combination

Ducted Heat

Heat

Type

Combination

Yes

Number of Heat Stages

Heat Type

Staged EH

Valve Type

Optional Sensor Type

RH/CO2

RH Sensor – IAQ Sensor

RH Control

DCV Control

Service Configuration

i-Vu / Field Assistant: BACview:

– The type of zone terminal that the controller is installed on. D:

– Used by the VVT Master to calculate the weighted average demand. If

the zone damper is round, enter its diameter. If rectangular, enter 0.

– Used by the VVT Master to calculate the weighted average demand. If the damper is rectangular, enter its area (width x height). If the damper is round, enter 0.

– Enable if the controller's analog output is used for an external high-torque or slave actuator. Enabling this setting disables the output for Modulating Hot Water or Combination reheat functions.

– The type of supplemental reheat that the zone controller will control. The heat

may be used with system heat, depending on the space temperature demand.

Options:

– no heat

– ducted or baseboard modulating hot water

– two position hot water

– ducted or baseboard electric heat

– combination baseboard modulating hot water and ducted staged electric

heat

– Determines whether the zone is using ducted heat or baseboard. If

, set this field to

for ducted heat.

Single Duct

Single Duct Parallel Series Fan

6.00 in.

0 to 100.00 in

0 sq.in.

0 to 9999 sq.in.

Disable

Disable/Enable

None

None Modulating Two Position Staged EH Combination

Yes

No/Yes

– The number heat stages when the

powered terminals are limited to no more than 2 stages.

– Two Position hot water only - The hot water valve's position with no power

applied to the valve.

– The type of sensor used on the controller's

setting determines the optional control functionality.

Options:

Relative humidity for zone dehumidification

– Indoor air quality to DCV control

– Demand control ventilation control. D:

60 VVT Zone Controller

input. This

. Fan

Two stages

One stage Two stages Three stages

NC/NO (normally closed/normally open)

None

None RH Sensor IAQ Sensor

D: – Zone dehumidification control.

Disable

Disable/Enable

Disable

Disable/Enable

Page 65

Point Name/Description

Default/Range

Min Setpoint Separation

Occ Override Normal Logic State

Remote

Occupancy RH Sensor Min Input Volts

RH Sensor Max Input Volts

RH Sensor Value @ Min Volts

RH Sensor Value @ Max Volts

CO2 Sensor Min Input Volts

CO2 Sensor Max Input Volts

CO2 Sensor Value @ Min Volts

CO2 Sensor Value @ Max Volts

PD (Pressure Dependent) Control :

Damper Motor Travel Time

Direction Clockwise

Damper Actuator

Built-in actuator

Target Damper Position

Lock value to

Auxheat

Reheat Min Damper Position

Lock value to

Fan

Lock value to

Off

Lock value to

Cooling Min Damper Position

– Minimum separation that must be maintained between the

heating and cooling setpoints.

– The normal state of the controller's

input. If the input's contact is the same state as the configured state, the controller follows its controlling schedule. If the contact is in the opposite state of the configured state, the controller is forced into the unoccupied mode.

– The lowest voltage that should be read from the relative

humidity (RH) sensor.

– The highest voltage that should be read from the RH sensor. D:

– The % relative humidity that correlates to the RH sensor's

low voltage reading.

– The % relative humidity that correlates to the RH sensor's

high voltage reading.

sensor.

voltage reading.

– The lowest voltage that should be read from the CO

– The highest voltage that should be read from the CO

– The ppm value that correlates to the CO

sensor's low

sensor's high

4°F

2 to 10°F

Open

Open/Closed

0.00 V

0 to 5.00 V

5.00 V

0 to 5.00 V

0 to 99%

100%

0 to 100%

1.00 V

0 to 5.00 V

5.00 V

0 to 5.00 V

0ppm

0 to 9999 ppm

2000 ppm

0 to 9999 ppm

This field is fixed at 205 seconds.

the damper's position when it rotates clockwise.

troubleshooting purposes, select moves to that position until

control for reheat troubleshooting purposes, select

- The current configured

value. The damper moves to that position until

– The current value of the fan output relay. To override normal control for troubleshooting purposes, select stays in that state until the

to when the air source mode is Cooling, Vent, or Free Cooling and the space requirements for cooling are at a minimum. We recommend that you set this no lower than 10%.

VVT Zone Controller 61

– The actuator's travel time from full closed to full open.

– If

- The current damper position. To override normal control for

– The minimum damper position the terminal controls

is set to

, set this field to

and then enter a value. The damper

checkbox is cleared.

. To override normal

and then enter a

checkbox is cleared.

and then enter

checkbox is cleared.

. The relay

D: 205 seconds

Closed

Open/Closed

R: 0 to 100%

R: On/Off

20%

0 to 100%

Page 66

Appendix A: VVT Zone Controller Points/Properties

Point Name/Description

Default/Range

Cooling Max Damper Position

Reheat Min Damper Position

Cooling Min Damper Position

Heating Min Damper Position

Heating Max Damper Position

Vent Position

Test and Balance

Automatic Control

Calibrated Damper Close

Calibrated Damper Open

Cool Max

Cool Min

Automatic Control

This must be activated when you finish using

any of the other Test and Balance commands.

Damper Full Close

Heat Max

Heat Min

Reheat Min

Vent

System Space Temperature

System Space RH

System Space AQ

System Cool Demand Level

System Heat Demand Level

System Outdoor Air Temperature

to when the air source mode is Cooling, Vent, or Free Cooling and the space requirements for cooling are at a maximum.

desired damper position at which the reheat will provide optimum performance. This value is compared to the two values determines the damper position.

to when the air source mode is Heat and the space requirements are at a minimum.

to when the air source mode is Heat and the space requirements are at a maximum.

source mode is Vent and the terminal mode is not in the Heat or Cool mode. If

– The ventilation damper position the terminal controls to when the air

Linkage is not active, the zone determines vent mode by verifying that its SAT sensor is between 65°F and 80°F.

replacing the zone controller, or troubleshooting. If

– Use the following command buttons when commissioning a zone, balancing the system 36 (page ),

resume normal control.

set.

– Forces the damper to its cool maximum position regardless of its current local mode.

– Forces the damper to its cool minimum position regardless of its current local mode.

– Returns the damper to its normal control routines.

– Overrides the damper to its full closed position.

– Forces the damper to its heat maximum position regardless of its current local mode.

– Forces the damper to its heat minimum position regardless of its current local mode.

– Forces the damper to its reheat position regardless of its current local position.

– Forces the damper to its ventilation position regardless of its current local mode.

– The maximum damper position the terminal controls

– For Single Duct units with ducted reheat. Set to the

value, and the greater of the

– The minimum damper position the terminal controls

– The maximum damper position the terminal controls

is not selected within 4 hours, the controller will

– Forces the damper closed so the 0% damper position can be set.

– Forces the damper to its maximum open position so that the 100% damper position can be

100%

0 to 100%

45%

0 to 100%

20%

0 to 100%

20%

0 to 100%

50%

0 to 100%

received over the network from another source. -999 indicates no value has been received and it will not be used.

– The relative humidity received over the network. -999 indicates no

value has been received and it will not be used.

demand limiting function to expand the cooling setpoint.

demand limiting function to expand the heating setpoint.

– The indoor air quality received over the network. -999 indicates no

62 VVT Zone Controller

– The current value of the controlling space temperature

R: -50 to 150°F

R: 2 to 100%

R: 300 to 9999 ppm

– This value received over the network and used by the

– The OAT received over the network. R: -50 to 150°F

R: 0 to 3

Page 67

Point Name/Description

Default/Range

System Occupancy

Navigation:

i-Vu / Field Assistant:

Properties > Equipment > Maintenance HOME

MAINT

Point Name/Description

Default/Range

Unit

Occupancy Status

Temp Compensated Start Learning Adaptive Start

Space Temp Source –

Sensor Failure SPT Sensor T55/56 Network

Airside Linkage Locked Value

Setpoint Adjustment

Effective Heat Setpoint Effective Cool Setpoint

Relative Humidity Source –

IAQ Source –

– The status of the

Maintenance

BACview:

– The controller's occupancy status as determined by a network

schedule, a local schedule, or a timed override.

Indicates the current status of the system:

The source of the controlling space temperature value.

Options:

– No valid space temperature or sensor status = failed.

– An SPT sensor is connected to the controller’s Rnet port. – A T55, T56, or T59 sensor is connected to the controller’s J20 terminals. – A network temperature sensor is bound to the controller’s space

temperature AV.

– The space temperature from a linked terminal.

–The controller’s space temperature input has been manually locked at

a value.

D: network point.

Unoccupied

Unoccupied/Occupied

R: Unoccupied/Occupied

R: Inactive/Active

R: Sensor Failure

SPT Sensor T55/T56 Network Airside Linkage Locked Value

space sensor.

The source of the indoor air quality. R:

VVT Zone Controller 63

– The amount that a user has adjusted the setpoints at an SPT

R: -20 to 20°F

– The current heating setpoint. R: -56 to 245°F

– The current cooling setpoint.

The source of the relative humidity. R:

R: -56 to 245°F

N/A Local Network Linkage Locked Value

Page 68

Appendix A: VVT Zone Controller Points/Properties

Point Name/Description

Default/Range

Outdoor Air Temperature Source

Heat Delay –

Remaining Heat Delay –

Heat Delay

Active

Cooling Demand Level

Heating Demand Level

Calculated DCV Damper Position –

Calculated Dehumidify Dmpr Position –

Reset Filter Alarm

Filter Alarm

Filter Service Alarm Timer Off

Occupancy Contact State

Remote

Occupancy

BAS On/Off

Inactive

Occupied

Unoccupied

NOTE

BAS On/Off

Unoccupied

Occupied

Optimal Start

Schedules

Pushbutton Override

Active

Override Time Remaining

Occupancy Contact Status

Remote

Global Occupancy –

System Occupancy

– The source of the outside air temperature.

The status of the terminal heat delay. R: Inactive/Active

– The system cool demand level being received over the

network.

– The system heat demand level being received over the

network.

calculated minimum damper position that will be maintained to satisfy the mode.

the calculated minimum damper position that will be maintained to satisfy the mode.

– Set this to On to reset an active

. After the alarm returns to normal, this automatically changes to

- The physical state of the

, this is the remaining delay time. R: 0 to 60 minutes

If the controller is in IAQ Override mode, this is the

If the controller is in Dehumidify mode, this is

and restart the

input. R: Open/Closed

R: N/A

R: 0 to 100%

Local Network Linkage Locked Value

0 to 3

Off

On/Off

– Determines the occupancy state of the controller and can be set over

the network by another device or third party BAS.

Options:

•

– Occupancy is determined by a configured schedule.

– The controller is always in the occupied mode.

– The controller is always in the unoccupied mode.

is set to either

is automatically disabled.

– The controller's occupancy status based on the schedule. R: Occupied/Unoccupied

–

indicates if a user pushed the sensor's override button to

override the occupancy state.

– The amount of time remaining in an override period. R: 0 to 480 minutes

– The physical state of the controller's

The current state of the

, the

routine

input. R: Inactive

network input. D:

Inactive

Inactive Occupied Unoccupied

R: Off/Active

Active Unoccupied/Stdby

Unoccupied

Unoccupied/Occupied

64 VVT Zone Controller

Page 69

Navigation:

Properties > Equipment > Alarms HOME

ALARM

Point Name/Description

Range

Space Temperature

Alarming Temperature

Space Temperature

Alarm

Alarm Limit Exceeded

Space

Temperature

Alarm

Space Temp Sensor –

Indoor Air Quality

Occupied High CO2

Alarm Limit

Supply Air Temperature Filter

Space Relative Humidity

Network OAT -

Airside Linkage Status

Alarm

Navigation:

Properties > Equipment > Linkage HOME

CONFIG > LINKAGE

Point Name/Description

Default/Range

Airside Linkage

Linkage Collector/Linkage Provider

Summary

Details

Linkage Collector

Number of Providers

Alarms

i-Vu / Field Assistant: BACview:

– Indicates if the space temperature exceeds the high or low alarm limit. R: Normal/Alarm

– Indicates the space temperature value that caused the space temperature alarm. This value is only displayed when the is in

alarm (above)

– Indicates the value of the space temperature alarm limit that

caused the space temperature alarm condition. Value is only displayed when the

alarm (above) is in

Indicates if the space temperature sensor fails. R: Normal/Alarm

– Indicates if the occupied CO

level exceeds the

– Indicates if the supply air temperature exceeds the high

temperature alarm limit or drops below the low temperature alarm limit.

– Indicates if the filter's runtime hours exceeds the runtime alarm limit. R: Clean/Dirty

– Indicates if the relative humidity exceeds the high RH alarm limit. R: Normal/Alarm

Indicates if the controller is not receiving a valid OAT value over the network. R: Normal/Alarm

R: -56 to 245°F

R: Normal/Alarm

Normal/Alarm

– If the controller is the VVT Master,

indicates that it lost Linkage communications with the air source. If the controller is a slave, it lost Linkage communications with the VVT master.

Linkage

i-Vu / Field Assistant: BACview:

Click and

tabs. See the microblock popup's Help files for more detailed

explanations.

– Set the

the linked system, including the bypass and VVT Master.

to access the microblock popup's

to the total number of controllers in

indicates that

R: 1 1 to 32

R: Normal/Alarm

VVT Zone Controller 65

Page 70

Appendix A: VVT Zone Controller Points/Properties

Point Name/Description

Default/Range

Linkage Provider

Network Number

Address

Network Number

Address

Airside Linkage Status

Active

Not

Active

Linkage Zone Type

VAV Master

VVT Master

Active Heating Caller

Active Cooling Caller

Linkage Callers System Mode Reselect Timer (minutes)

Inhibit Heating Call from this zone Inhibit Cooling Call from this zone

Yes

Linkage RH Type

Linkage IAQ Type

Air Source Mode

Airside Linkage Status

Active

Airside Linkage Status

Not Active

Air Source Supply Air Temp

Airside Linkage

Status

Active

Airside Linkage Status

Not Active

– Enter the MS/TP

air source controller.

– If

, the controller is part of a linked system. If

, the controller is a stand-alone device.

– Select whether the controller is a Master or a slave.

Select

if the controller is the Master or a sub-master in a VAV application.

only if the controller is the Master in a VVT application. VVT

applications do not support sub-masters.

– Determines if the zone will be counted as a heat caller for

system heating when the zone has a local demand for heat.

– Determines if the zone will be counted as a cool caller for

system cooling when the zone has a local demand for cooling.

– The minimum number of zones required to make the air source go into heating or cooling mode. 1 is typical for systems with 8 zones or less. For larger systems, increase the number by 1 for each 6 zones. For example, 3 linkage callers for a 20 zone system.

and MAC

of the linked

1 to 65535

1 to 99

R: Not Active/Active

Slave

Slave VVT Master VAV Master

Yes

No/Yes

Yes

No/Yes

R: 1 1 to 32

long the system continues to operate in the current mode before it reassesses all zones while the current demand is still active.

heating caller.

cooling caller.

– Determines if the VVT or VAV Master sends to the air source the average or maximum values of all linked zone controllers that have a relative humidity (RH) sensor.

– Determines if the Master controller sends to the air source the average or maximum values of all linked zone controllers that have a CO DCV and IAQ control.

– If linked air source. If source as determined by the zone controller’s SAT sensor.

. If

66 VVT Zone Controller

– Applies only to a VVT master. Defines how

- If Yes, the VVT Master ignores this controller as a

- If

, the VVT Master ignores this controller as a

– Shows the air source’s SAT when

, this is the current mode of the

, this is the mode of the air

, a “?” is displayed.

sensor for

10 to 120

No/Yes

Avg

Avg/Max

Max

Avg/Max

OFF WARMUP

HEAT COOL FREECOOL PRESSURE EVAC VENT

R: ? or -56 to 245°F

Page 71

Point Name/Description

Default/Range

Air Source Outdoor Air Temp

Airside Linkage

Status

Active

Airside Linkage Status

Not Active

Navigation:

i-Vu / Field Assistant:

Properties > I/O Points N/A

Point Name/Description

Default/Range

SPT Temp Sensor/Zone Temp

SPT Temp Sensor

Properties

Details

Zone Temp

Sensor Type:

Min Present Value

Max Present Value

Setpoint Adjustment:

Max Adjust

Reset setpoint adjust to zero when unoccupied -

Each Pulse

Max Accum

Cancel override

– Shows the air source’s OAT when

. If

, a “?” is displayed.

I/O Points

BACview:

WARNING! Do not change the Value, Offset/Polarity, Exp:Num, I/O Type, Sensor/Actuator Type, Min/Max, or Resolution I/O configuration parameter for the points listed below. Changing these

parameters could cause improper control and/or equipment damage. Use extreme caution if locking a point as this may also cause improper control and/or equipment damage.

•

- (For the SPT Standard, SPT Plus, and SPT Pro sensors only). Sensor configurations on the microblock's For more information, consult the Carrier Sensors Installation Guide.

•

- do not adjust these settings.

R: ? or -56 to 245°F

R: -56 to 245°F

tab are listed below.

- Minimum present value the sensor transmits before indicating

an alarm.

- Maximum present value the sensor transmits before indicating

– The amount that a user may adjust the setpoint at the sensors.

when the controller transitions to unoccupied.

a user pushes the sensor's override button.

when a user pushes the sensor's override button.

an override.

– The amount of time that is added to the total override time each time

– The maximum amount of override time that can be accumulated

– How long a user must push the sensor's override button to cancel

Resets the setpoint bias to zero

D: 96

5°F

0 to 15°F

D: Off

30:00 mm:ss

0:00 to 1440:00 mm:ss

240:00 mm:ss

0:00 to 2000:00 mm:ss

3 seconds

0 to 60 seconds

VVT Zone Controller 67

Page 72

Appendix A: VVT Zone Controller Points/Properties

Point Name/Description

Default/Range

Sensor Array:

Sensor calculation method -

BACnet configuration:

Network Visible -

Object Name -

CO2 Sensor

RH/CO2

RH Sensor

RH/CO2

Zone Temp

T55

SAT Sensor

Occupancy Contact State

Remote Occupancy

Override

Sensor Invalid

Off

Hot Water Valve

HWV/ACT

Heating Stage 1

HEAT1

Heating Stage 2

HEAT2

Fan S/S or EH 3

FAN/HEAT3

variable to be passed to the controller.

point, and for this point to generate alarms.

and the SPT sensor.

When using multiple SPT sensors, select the process

Must be enabled for other BACnet objects to read or write to this

Do not D: change. zone_temp

– The current voltage of the controller's

– The value of the controller's

– The current value of the controller's SAT input. R: -56 to 140°F

- The hardware state of the contact used for

– This internal input monitors the communication between the controller

indicates communication is normal.

- The current value of the controller's

Avg

Avg, Min, Max

Enabled

input. R: 0 to 5 Vdc

input. 0 to 5 Vdc

space temperature sensor input. R: -56 to 245°F

output. R: 0 to 100%

R: – The current voltage of the controller's

R: Open/Closed

R: Off/On

- The current hardware state of the controller's

- The current hardware state of the controller’s

function of this output depends on the terminal type.

output. R: Off/On

output. The

R: Off/On

68 VVT Zone Controller

Page 73

Air Source Mode

Temperature Control Requirements

Terminal Type

Aux Heat

Terminal Mode

Damper Control (Damper Setpoint used)

Heat Control

Fan Control

Modulate Damper Position

Heating

Single Duct,

Cooling

Minimum Damper Position

Disable

Minimum Damper Position

Cooling

Single Duct

N/A

Cooling

Modulate Damper Position

Disable

N/A Modulate Damper Position

Parallel Fan

N/A

Cooling

Modulate Damper Position

Disable

Appendix B: VVT terminal modes

Off None All N/A Off Hold Damper @65% (None) Disable Disable

Vent None Single Duct N/A Vent Vent Damper Position (Vent) Disable N/A

Cool or Freecool None Single Duct N/A Vent

Cooling All N/A Off Hold Damper @65% (None) Disable Disable

Heating Single Duct N/A Off Hold Damper @65% (None) Disable N/A

Series or Parallel Fan

Series Fan Yes Heating Hold Damper @65% (None) Enable Enable

Parallel Fan Yes Heating Close Damper (None) Enable Enable

Series Fan N/A Vent Vent Damper Position (Vent) Disable Enable

Parallel Fan N/A Vent Vent Damper Position (Vent) Disable Disable

Cooling Single Duct N/A Cooling

Series Fan N/A Cooling

Parallel Fan N/A Cooling

Parallel Fan Series Fan No Heating

Single Duct Yes Reheat Minimum Damper Position Enable N/A

Series or Parallel Fan

Series Fan N/A Vent

Parallel Fan N/A Vent

No Off Hold Damper @65% (None) Disable Disable

Yes Heating

Modulate Damper Position (Cool)

(Cool)

(Cool) Minimum Damper Position

(Cool)

Minimum Damper Position (Cool)

(Cool)

Disable N/A

Disable Enable

Disable Disable

Disable Enable

Enable Enable

Disable N/A

Disable Enable

Disable Disable

Heating

VVT Zone Controller 69

Series Fan N/A Cooling

Single Duct, Parallel Fan

Series Fan No Heating

Single Duct Yes Reheat Minimum Damper Position Enable N/A

Series or Parallel Fan

No Heating

Yes Heating

(Cool)

(Cool) Minimum Damper Position

(Cool)

Minimum Damper Position (Cool)

Enable Enable

Disable Disable

Disable Enable

Enable Enable

Page 74

Appendix B: VVT terminal modes

Air Source Mode

Temperature Control Requirements

Terminal Type

Aux Heat

Terminal Mode

Damper Control (Damper Setpoint used)

Heat Control

Fan Control

Single Duct,

Minimum Damper Position

Series Fan

N/A

Heating

Minimum Damper Position

Disable

Enable

Maximum Damper Position

Cooling

Single Duct,

N/A

Pressurize

Maximum Damper Position

Disable

Series Fan

N/A

Pressurize

Maximum Damper Position

Disable

Enable

Heat, Warmup None

Pressurization (Linked air source only)

Evacuation/ Shutdown (Linked)

Parallel Fan

Cooling

Heating Single Duct No Heating

None

Heating

All All N/A Evacuate Close Damper Disable Disable

Single Duct, Parallel Fan

Series Fan N/A Heating

Single Duct Yes Heating

Series or Parallel Fan

Single Duct, Parallel Fan

Series Fan N/A Pressurize

Parallel Fan

Single Duct, Parallel Fan

Series Fan No Pressurize

Single Duct, Parallel Fan

Series Fan Yes Pressurize

N/A Heating

No Heating

Yes Heating

N/A Pressurize

No Pressurize

Yes Pressurize

(Heat)

(Heat) Minimum Damper Position

(Heat) Modulate Damper Position

(Heat) Maximum Damper Position

(Cool)

(Cool) Maximum Damper Position

(Cool)

Disable Disable

Disable Enable

Disable N/A

Enable N/A

Disable Enable

Enable Enable

Disable Disable

Disable Enable

Disable Disable

Disable Enable

Disable Disable

Disable Enable

70 VVT Zone Controller

Page 75

Index

Actuator • 1, 3, 27, 41 Addressing the controller • 9 Air source • 41, 46 Air source modes • 41, 46, 47 Airside linkage • 65 Alarm configuration • 58 Alarms • 45, 65 Automatic Control • 60

BACnet compliance • 3, 50 BACnet objects • 3 BACnet port • 3, 10 BACview • 3, 29 Balancing the system • 36 Battery • 3, 49 BT485 • 3, 10 bypass controller • 1

Calibrated Damper Open • 60 Calilbrated Damper Close • 60 CO2 sensor • 3, 43, 45 Commissioning • 36 Compliance • 50 Control programs • 3 Cool Max • 60 Cool Min • 60

Damper • 1, 7 Damper Full Close • 60 Dehumidification • 43 Demand control ventilation (DCV) • 43 Demand level • 46 Demand limiting • 46 Dimensions • 3 Duct Air Temperature sensor • 1, 3, 16, 40

Duct sensors

Duct Air Temperature sensor • 1, 3, 16, 40 Supply Air Temperature sensor • 3, 40

Environmental operating range • 3

Fan heat off delay • 42 FCC compliance • 50 Field Assistant • 51 Field-supplied hardware • 6, 12

I/O Points • 67

Input resolution • 3 Inputs • 3, 11 i-Vu • 29, 51

LED's • 3, 48 Linkage • 1, 45, 46 Linkage properties • 29, 34, 65 Listings • 3 Local Access port • 3 Local schedules • 44

Maintenance • 63 Memory • 3 Microprocessor • 3 Module driver • 3 Module Status report • 49 Mounting the controller • 3, 7 MS/TP network, wiring • 10

Network schedule • 44

Occupancy • 44 Output resolution • 3 Outputs • 3

Parallel fan heat on delay • 42 Parallel fan terminals • 41 PID control • 41 Points/Properties • 51

Active Cooling Caller • 65 Active Heating Caller • 65 Adjusted cooling capacity • 53 Adjusted heating capacity • 53 Air Source Mode • 65 Air Source Outdoor Air Temp • 65 Air Source Supply Air Temp • 65 Airside Linkage • 63, 65 Airside Linkage Alarm • 45, 65 Airside Linkage Status • 65 Airside Linkage Status Alarm • 65 Alarm Delay (min/%RH) • 58 Alarm Delay (min/deg) • 58 Alarm Delay (min/ppm) • 58 Alarm Limit Exceeded • 65 Alarming Temperature • 65 Alarms Displayed on SPT Sensor • 58 Allow Continuous • 67 Automatic Control • 60 Auxheat • 60 BACnet Configuration • 67 BAS On/Off • 63

VVT Zone Controller 71

Page 76

Index

Baseboard Heating Capacity • 51 Calculated DCV Damper Position • 63 Calculated Dehumidify Dmpr Position • 63 Calibrated Damper Close • 60 Calibrated Damper Open • 60 Cancel override • 67 CO2 (ppm) • 51 CO2 Sensor • 67 CO2 Sensor Max Input Volts • 60 CO2 Sensor Min Input Volts • 60 CO2 Sensor Value @ Max Volts • 60 CO2 Sensor Value @ Min Volts • 60 Cool Max • 60 Cool Min • 60 Cool Start K factor • 53 Cooling Capacity • 30, 53 Cooling Design Temp • 30, 53 Cooling Max Damper Position • 33, 60 Cooling Min Damper Position • 33, 43, 60 Damper Area (sq.In.) • 33, 60 Damper Full Close • 60 Damper Motor Travel Time • 60 Damper Position • 51 Damper Size (in.) • 34, 60 DCV Control • 60 DCV Max Ctrl Setpoint • 30, 43, 52, 53 DCV Max Damper Pos • 52 DCV Max Vent Damper Pos • 30, 43, 52 DCV Start Ctrl Setpoint • 30, 43, 52, 53 Direction Clockwise • 33, 60 Dirty Filter Alarm • 58 Ducted Heat • 33, 60 Ducted Heat Capacity • 51 Each Pulse • 67 Effective Heat Setpoint • 63 Effective setpoints • 53 Electric auxiliary heat • 42 External Actuator Enable • 33, 60 Fan • 51, 60 Fan Off Delay • 42, 52 Fan S/S • 67 Fan S/S or EH 3 • 67 Filter • 65 Filter Alarm • 45, 65 Filter Runtime • 45 Filter Service Alarm Timer • 45, 52 Global Occupancy • 63 Heat Delay • 63 Heat Enable • 30, 52 Heat Max • 60 Heat Min • 60 Heat Start K factor • 53 Heat Type • 34, 42, 60 Heating Capacity • 30, 51, 53 Heating Design Temp • 30, 53 Heating Lockout Temperature • 30, 42, 52 Heating Max Damper Position • 33, 60 Heating Min Damper Position • 33, 43, 60 Heating Stage 1 • 67 Heating Stage 2 • 67 High SAT Alarm Limit • 45, 58 Hot Water Valve • 67 Hysteresis • 30, 53

IAQ / Ventilation alarm • 58 IAQ Sensor • 60 IAQ Source • 63 Indoor Air Quality • 65 Indoor Air Quality Alarm • 45, 65 Inhibit Cooling Call from this zone • 65 Inhibit Heating Call from this zone • 65 LAT Airflow Increase • 51 Learned cooling capacity • 53 Learned heating capacity • 53 Learning Adaptive Optimal Start • 53 Learning Adaptive Start • 53, 63 Linkage Callers • 36, 46, 65 Linkage Collector • 34, 65 Linkage IAQ Type • 65 Linkage Provider • 34, 65 Linkage RH Type • 65 Linkage Zone Type • 34, 65 Local Sensor Calibration • 52 Locked Value • 63 Low SAT Alarm Limit • 45, 58 Max Accum • 67 Max Adjust • 67 Max Present Value • 67 Maximum Heating SAT • 52 Min Present Value • 67 Min Setpoint Separation • 53, 60 Modulating hot water/steam heating heat • 42 Network • 63 Network OAT Sensor Alarm • 65 Network Visible • 67 Number of Heat Stages • 33, 60 Object Name • 67 Occ Contact Status • 63 Occ High RH Alarm Limit • 45, 58 Occ Override Normal Logic State • 44, 60 Occupancy • 63 Occupancy Contact State • 63, 67 Occupancy Contact Status • 63 Occupancy Schedules • 44, 52 Occupancy Status • 63 Occupied Alarm Hysteresis • 45, 58 Occupied Cooling • 53 Occupied Cooling 1 • 53 Occupied Cooling 2 • 53 Occupied Heating • 53 Occupied Heating 1 • 53 Occupied Heating 2 • 53 Occupied High CO2 Alarm Limit • 45, 58 Occupied RH Control Setpoint • 30, 43, 53 Occupied Setpoints • 53 Optimal Start • 30, 44, 46, 53 Optimal Start Type • 53 Optional Ctrl Type • 33, 60 Optional Sensor Type • 60 Outdoor Air Temperature • 51 Outdoor Air Temperature Source • 63 Outdoor Air Temperature Status • 63 Override Time Remaining • 63 Parallel Fan Heat On Delay • 30, 42, 52 Parallel Fan On Value • 30, 41, 53 PD (Perssure Dependent) Control • 33, 60 Power Fail Restart Delay • 52

72 VVT Zone Controller

Page 77

Index

VVT Zone Controller 73

Pushbutton Override • 52, 63 Reheat Min • 60 Reheat Min Damper Position • 33, 41, 60 Relative Humidity • 52 Relative Humidity Calibration • 52 Remaining Heat Delay • 63 Reset Filter Alarm • 45, 63 Reset Setpoint • 67 RH Control • 60 RH Sensor • 60, 67 RH Sensor Max Input Volts • 60 RH Sensor Min Input Volts • 60 RH Sensor Value @ Max Volts • 60 RH Sensor Value @ Min Volts • 60 Schedules • 63 Sensor Array • 67 Sensor Calculation Method • 67 Sensor Failure • 63 Sensor Invalid • 67 Sensor Type • 67 Setpoint Adjust • 52 Setpoint Adjustment • 63, 67 Setpoint Adjustment Range • 52 Shutdown • 51 Space High CO2 Alarm • 58 Space High Humidity Alarm • 58 Space Humidity Alarm • 58 Space Relative Humidity • 51, 53 Space Relative Humidity Alarm • 45, 65 Space Temp Calibration • 52 Space Temp Sensor • 65 Space Temp Sensor Alarm • 45, 65 Space Temp Source • 63 Space Temperature • 65 Space Temperature - Prime Variable • 51 Space Temperature Alarm • 45, 58, 65 SPT Sensor • 63 Standby Offset • 53 Supply Air Temp Alarm • 45, 65 Supply Air Temp Calibration • 52 Supply Air Temperature • 51, 52, 65 Supply Air Temperature Alarm • 58 System Cool Demand • 60 System Cool Demand Level • 60 System Heat Demand • 60 System Heat Demand Level • 60 System Mode Reselect Timer (minutes) • 65 System Occupancy • 60 System Outdoor Air Temperature • 60 System Outside Air Temperature • 60 System Space IAQ • 60 System Space RH • 60 System Space Temperature • 60 T55 Override Duration • 52 T55/56 • 63 Target damper position • 60 Temp Compensated Start • 63 Tempurature Compensated • 53 Term Type • 33, 51, 60 Terminal Mode • 51 Terminal Type • 51, 60 Test and Balance • 60 Timed Local Override • 67

Two-position hot water/steam heating heat • 42 Unocc High RH Alarm Limit • 45, 58 Unoccupied Cooling • 53 Unoccupied Cooling 1 • 53 Unoccupied Cooling 2 • 53 Unoccupied Heating • 53 Unoccupied Heating 1 • 53 Unoccupied Heating 2 • 53 Unoccupied High SPT Alarm Limit • 58 Unoccupied Low SPT Alarm Limit • 58 Unoccupied Setpoints • 53 Valve Type • 33, 60 Vent • 60 Vent Position • 33, 41, 60 Zone Temp • 67

Zone Temp Sensor • 67 Power specifications • 3 Power wiring • 8 Protection • 3

Reheat Min • 60 Relative humidity sensor • 3, 19, 43, 45 Remote occupancy sensor • 3, 20 Rnet • 12 Rnet port • 3 Rnet wiring specifications • 12

Schedules • 44 Sequence of operation • 40 Serial number • 49 Series fan terminals • 41 Service Configuration • 29, 33, 60 Setpoint Configuration • 29, 30, 53 Single duct with reheat • 41 space temperature sensors • 45 SPT sensors • 3, 12, 40 Start-up • 29 Status • 51 Supply Air Temperature Alarm • 58 Supply Air Temperature sensor • 3, 40 System checkout • 35

T55 / T56 • 14, 40 temperature sensors • 40

Duct Air Temperature sensor • 1, 3, 16, 40

SPT sensors • 3, 12, 40

Supply Air Temperature sensor • 3, 40 Terminal modes • 69 Test and Balance • 36, 60 Troubleshooting • 48

Unit Configuration • 29, 30, 52

Vent • 60 Virtual BACview • 29 VVT Master • 1, 46

Page 78

Index

VVT system • 1 VVT terminal modes • 69

wall-mounted sensors

CO2 sensor • 3, 43, 45

Weight • 3

Wiring

Actuator • 27 Fan box 2-position hot water wiring diagram •

Fan box 2-stage electric heat wiring diagram •

Fan box combination baseboard and ducted

heater wiring diagram • 26

Fan box modulating hot water (ducted or

baseboard) wiring diagram • 25 Inputs • 3, 11 Output • 21

Single duct 2-position hot water wiring diagram

• 23

Single duct 2-stage electric heat wiring diagram

• 24

Single duct combination baseboard and ducted

heater wiring diagram • 24 Single duct modulating hot water wiring diagram

• 23 Single duct only wiring diagram • 22 Wiring for power • 8

Wiring specifications

Equipment wiring • 21 Network • 10 Rnet • 12

Zone airflow control • 41 Zone reheat control • 42

74 VVT Zone Controller

Page 79

Page 80

A member of the United Technologies Corporation family · Stock sym bol UTX · Catalog No. 11-808-435-01 · 6/20/2011

Carrier VVT Zone, OPN-VVTZC Installation And Startup Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

What is a VVT Zone Controller?

Specifications

Safety Considerations

Installation

Field-supplied hardware

Mounting the VVT Zone Controller

To mount the controller

Wiring the VVT Zone Controller for power

To wire the controller for power

To address the VVT Zone Controller

Wiring the VVT Zone Controller to the MS/TP network

Wiring specifications

To wire the controller to the network

Wiring sensors to inputs

Wiring an SPT sensor

Rnet wiring specifications

To wire the SPT sensor to the controller

Wiring a T55 space temperature sensor

Wiring specifications

To wire the T55 sensor to the controller

Wiring a Supply Air Temperature sensor

Wiring specifications

To wire the SAT sensor to the controller

Wiring a Duct Air Temperature sensor

Wiring specifications

To wire the DAT sensor to the controller

Wiring a CO2 sensor

Wiring specifications

To wire the CO2 sensor to the controller

Wiring a Relative Humidity sensor

Wiring specifications

To wire the RH sensor to the controller

Wiring a remote occupancy sensor

Wiring specifications

Wiring equipment to outputs

Wiring specifications

Wiring diagram legend

Single duct only

Single duct 2-position hot water

Single duct modulating hot water

Single duct combination base board and ducted heat

Single duct 2-stage electric heat

Fan box 2-position hot water

Fan box modulating hot water - ducted or baseboard

Fan box combination baseboard and ducted heat

Fan box 2-stage electric heat

Wiring field-supplied actuators to the analog output

High-torque actuators

Linked actuators

Start-up

Configuring the VVT Zone Controller's properties

Unit Configuration properties

Setpoint properties

Service Configuration properties

Linkage properties

Performing system checkout

Commissioning the VVT Zone Controller

Balancing the system

Step 1: Prepare for balancing

Step 2: Balance each zone

Step 3: Set the system static pressure

Sequence of operation

Temperature sensors

Zone airflow control

Zone reheat control

Demand control ventilation (DCV) and dehumidification using optional sensors

Occupancy

Alarms

Demand limiting

Linkage

Air source mode determination

Troubleshooting

LED's

Serial number

Replacing the VVT Zone Controller's battery