Carrier 33ZCSECTRM Specifikace stáhnout pdf (Strana 9)

VAV Fan Terminal Zone Controller

(33ZCFANTRM) —

The input and output channel as-

signments are shown in Table 4.

The zone controller provides eight analog inputs.

ANALOG INPUTS — The analog inputs consist of four ther-

mistor type inputs and four 0 to 10 VDC inputs. The thermistor

inputs conform to the nominal 10K thermistor values in

Table 1.

TRIAC OUTPUTS — The zone controller has four 24-VAC

triac outputs on the baseboard and two on the output board.

These outputs are capable of switching 24 VAC at 1 Amp with

a power factor of 0.8. Two triacs control the primary damper.

One triac is used to rotate the damper clockwise and the other

is used to rotate the damper counterclockwise. The two other

triacs are dedicated to the control of either proportional or two

position heat and are used to control the secondary damper

actuator.

The specific output requirements for the air terminal appli-

cations are given in Table 5.

RELAY OUTPUTS — These relays are designed to switch

24 VAC as a maximum voltage at up to 1 amp with a power

factor of 0.8. The relays provide fan off/on control and control

a third stage of electric heat if used.

Table 4 — Zone Controller Inputs (33ZCFANTRM)

LEGEND

W —

Wiper of Potentiometer

*Required whenever ducted heat is to be controlled. If monitoring of supply air is required the zone controller must be configured for heat even if

the box does not contain heat. It is also required for stand-alone operation.

†Primary air sensor is required whenever unit is configured as a master zone controller and non-CCN air source is used..

**24v connection (J4-16) is required for RH sensor only.

††Option required on Constant Volume Dual Units for zone pressure control. 33ZCSECTRM is required.

Table 5 — 33ZCFANTRM Zone Controller Outputs

*These terminals provide 24 VAC-output power to the load.

†The zone controller comes wired and configured for clockwise closure of the primary air damper. Do not change wiring to change rotation. The

installer should configure the rotation decision with Carrier software to ensure transducer calibration integrity.

CHANNEL

NAME

TERMINATION

DESCRIPTION DEVICE

SPT

14,12 (ground) Space Temperature Sensor (33ZCT55SPT), field installed and wired 10K Thermistor

SAT

10,12 (ground) Supply Air Temperature Sensor, required for heat,

field installed and wired*

10K Thermistor

SP_OFFST

12 (ground), 8 Set Point Offset Adjust, requires the use of field-installed

33ZCT56SPT space temperature sensor

100K Potentiometer

PAT EM P

4, 6 (ground) Primary Air Temperature Factory option field installed and wired† 10K Thermistor

RH/IAQ**

16 (24v), 15 (+), 13 (-) RH/IAQ Sensor Factory option, field installed and wired 0-10 VDC

DMPPOS

9 (10v), 7 (W+), 5 (-) Primary Damper Position Factory Supplied and wired with zone controller 0-10 VDC

TEST

3, 1 (GND)

Used to test the output of the airflow transducer.

Airflow Sensor

(1-5 VDC)

SECFLO

9 (10v), 11 (+), 13 (-) Secondary Airflow Sensor†† 1-5 VDC

REMOTE

2 (24 vac), J1 Pin 1

(24 vac†)

Remote Occupancy Contact

Dry contact switch

with 24 vac supplied

by power connection

CHANNEL (NUMBER) J5 TERMINATION’S DESCRIPTION

DMPR_ CCW

1*, 2 Primary Damper CCW (factory wired)

DMPR_CW

2, 3* Primary Damper CW (factory wired)†

HEAT_ST1

4, 5 (24 VAC externally supplied) Heat Open or Heat First Stage (field wired)

HEAT_ST2

6, 5 (24 VAC externally supplied) Heat Close or Heat Second Stage (field wired)

FAN

J6-1(24 VAC externally supplied), J6-2 (Common, N/O) FAN Fan Start/Stop

HEAT_ST3

J7-1 (24 VAC externally supplied), J7-3 (Common, N/O) Heat Third Stage

2_DMP_CCW

J8-1, J8-2 Secondary Damper CCW

2_DMP_CW

J8-2, J8-3 Secondary Damper CW

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