Carrier 33ZCVAVTRM Specifications download pdf (Page 3)

Specifications

Wiring connections

Field wiring is 18 to 22 AWG (American Wire Gage). The

zone controller is a NEC (National Electronic Code) Class 2

rated device.

Inputs

• space temperature sensor

• primary air damper position

• airflow sensor (factory installed)

• field-installed remote wall sensor set point adjustment

• optional supply temperature sensor (required for heat

and supply air monitoring)

• optional primary air temperature sensor (required for sys-

tems which do not utilize a linkage compatible air source)

• optional IAQ sensor

• optional relative humidity sensor

Outputs

• internally factory-wired VAV actuator

• heating

- modulating (floating) heat

- up to 2 stages of heat

- single position heat

Power supply

The power supply is 24 VAC ± 10% at 40 VA

(50/60 Hz).

Power consumption

The power requirement sizing allows for accessory water

valves and for the fan contactor. Water valves are limited to

15 VA on both single-position and modulating hot water.

The fan contactor is limited to 10 VA (holding) each.

Accuracy

Terminal airflow (nominal cfm) is rated at 1-in. wg

(249 kPa) measured velocity pressure. The zone controller

is capable of controlling to as low as 10% or as high as

125% of nominal airflow with an accuracy of ± 3% (nomi-

nal) at any point within the range.

Hardware (memory)

FLASH EPROM

Differential pressure range

0 to 2.0 in. wg (0 to 498 kPa) maximum for the onboard

flow sensor.

Specified sensing temperature range

The zone controller space temperature range is –40 to

245 F (–40 to 118 C). The zone controller has an allow-

able control set point range from 40 to 90 F (4 to 32 C) for

heating and 45 to 99 F (7 to 37 C) for cooling.

Communications

The number of controllers is limited to 128 zones maxi-

mum, with a limit of 8 systems (Linkage Coordinator con-

figured for at least 2 zones). Bus length may not exceed

4000 ft (1219 m), with no more than 60 devices on any

1000 ft (305 m) section. Optically isolated RS-485 repeat-

ers are required every 1000 ft (305 m).

At 19,200 and 38,400 baud, the number of controllers

is limited to 128 maximum, with no limit on the number of

Linkage Coordinators. Bus length may not exceed 1000 ft

(305 m).

Environmental ratings

Operating Temperature: 32 to 140 F (0° to 60 C) at 0 to

90% RH (non–condensing)

Shipping Temperature: –40 to 185 F (-40 to 85 C) at 0 to

90% RH (non–condensing)

Vibration

Performance vibration:

• 0.014-in. (0.356 mm) Peak-to-Peak displacement

measured at 5 to 31 Hz

• 0.75 G measured at 31 to 300 Hz

Corrosion

Office environment. Indoor use only.

Approvals

• listed under UL 916-PAZX and UL 873

• conforms to requirements per European Consortium

standards EN50081-1 (CISPR 22, Class B) and

EN50082-1 (IEC 801-2, IEC 801-3, and IEC 801-4) for

CE mark labeling

• UL94-5V plenum rated (housing and actuator)

Accessories

Conduit box — The 33ZCCONBOX conduit box pro-

vides two conduit connections to the zone controller for

installations requiring the use of conduit due to local electri-

cal codes.

Supply air temperature sensor — The 33ZCSENSAT

supply air temperature sensor is required for heating appli-

cations or stand-alone operation. The sensor is optional on

cooling only applications and is used for supply air moni-

toring. The sensor has an operating range of –40 to 245 F

(–40 to 118 C).

Primary air temperature sensor — The 33ZCSENPAT

primary air temperature sensor is required on a linkage

coordinator zone controller if the zone controller is not

using a CCN linkage compatible air source. The sensor is

used to monitor the equipment’s supply-air temperature.

The temperature is broadcast to the zone controllers which

receive information from the linkage coordinator. The

sensor has an operating range of –40 to 245 F (–40 to

118 C).

Space temperature sensor with override button —

The 33ZCT55SPT space temperature sensor with over-

ride button is required for all applications. The space tem-

perature sensor monitors room temperature which is used

by the zone controller to determine the amount of condi-

tioned air that is allowed into the space.

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Carrier 33ZCVAVTRM Specifications Page 3

Comments to this Manuals

Carrier 33ZCVAVTRM Specifications Page 3

Comments to this Manuals

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