Carrier 33ZCVAVTRM Specifications download pdf (Page 184)

• 128 controller maximum system (must be located on

same network bus segment)

• up to 32 zone controllers per system

• capable of zone humidity monitoring with field-installed

humidity sensor

• Carrier Linkage System capability

• global set point and occupancy scheduling

• sensor averaging

• foreign language support for ASCII based character set

• dedicated port for System Pilot connection

• can drive up to 4 linked damper actuators

• capable of local set point adjustment using field-

installed temperature sensor (with temperature offset)

• both controller housing and actuator are UL94-5V

plenum rated

• control complies with ASHRAE 62.1

Features/Benefits

Flexibility for every application

The VVT® zone controller is a single duct, variable volume

and temperature terminal control with a factory-integrated

controller and actuator. The VVT zone controller maintains

precise temperature control in the space by regulating the

flow of conditioned air into the space.

Buildings with diverse loading conditions can be sup-

ported by controlling reheat (single duct only) or supple-

mental heat. The VVT zone controller can support

two-position hot water, modulating hot water, 3-stage elec-

tric heat, or combination baseboard and ducted heat.

Carrier linkage system compatibility

When linked to a Carrier Linkage System, the VVT zone

controller provides numerous features and benefits such as

weighted average demand for system operation, reference

zone temperature and set points, set point averaging, glo-

bal set point schedule, and occupancy scheduling.

Additional control features

The VVT zone controller provides additional control fea-

tures such as Occupied/Unoccupied scheduling initialized

via the network. The zone controller offers override

invoked from a wall sensor during unoccupied hours from

1 to 1440 minutes in 1-minute increments. Optional CO

control or relative humidity monitoring are also available.

Simple actuator connection

The VVT zone controller control assembly contains an

integral VVT actuator assembly that is field mounted to the

terminal damper shaft, similar to the mounting of a stan-

dard actuator. The actuator is rated at 35 lb.-in. (3.95 N-m)

torque, a 90-degree stroke, and provides 90-second nomi-

nal timing at 60 Hz. The actuator is suitable for mounting

onto a

-in. (9.5 mm) square or round VVT box damper

shaft, or onto a

-in. (13 mm) round damper shaft.

The minimum VVT box damper shaft length is 1

-in.

(45 mm). The VVT zone controller is designed for vertical

or horizontal mounting.

Ease of installation

The VVT zone controller is provided with removable con-

nectors for power, communications, and damper. The

VVT zone controller has non-removable screw type con-

nectors for inputs. The VVT zone controller also provides

an RJ-14 modular phone jack for the Carrier network

software connection to the module via Carrier network

communications.

User interface

The VVT zone controller is designed to allow a service per-

son or building owner to configure and operate the unit

through the System Pilot user interface. A user interface is

not required for day-to-day operation. All maintenance,

configuration, setup, and diagnostic information is avail-

able through the Level II communications port to allow

data access by an attached computer running Network Ser-

vice Tool or ComfortVIEW

™ software.

Functions

• Pressure dependent space temperature control for sin-

gle duct, series fan powered and parallel fan powered

air terminals

• Auxiliary heat functions including two-position hot

water valve, 3 stages of electric heat, modulating hot

water valve and combination radiant/ducted heat stages

• T55/T56 wall mounted space temperature sensor

interface

• T56 space temperature set point reset (slide

potentiometer)

• Timed override (T55/T56 pushbutton) with one-minute

granularity

• Space temperature and set point reset sharing

• Display of relative humidity based on local or remote

sensor

• Local occupancy control

• Remote occupancy override

•Airside linkage

• Linkage function for multiple terminals with and without

an air source

• Adaptive optimal start (AOS)

• Sensor grouping function

• Commissioning functions

• System-wide air balancing

•Damper calibration

•Sensor trim

• Carrier network tables and alarms

• Demand Controlled Ventilation (DCV)

•Analog CO

monitoring and control

• Loadshed/redline response

• System Pilot interface

105

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Carrier 33ZCVAVTRM Specifications Page 184

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