Carrier 33ZCVAVTRM, 33ZCSECTRM → Zone Controller Physical Details 33ZCFANTRM Shown, HF23BJ042

DAMPER	ACTUATOR	LOW PRESSURE
SHAFT	CLAMP	TUBING ROUTING
	ASSEMBLY

MECHANICAL STOP

0

LOW	US		15	RH/IAQ	+24V	16
C					SPT
				GND
	1	FAN AC			GND
	J6		SECFLOW
		FAN			SAT
	1 2	24VAC	J4	+10V	T56
	J7		DMPPOS
1		N/A			GND
		HEAT3		GND
	3				PAT
				TEST
					REMOTE
	®			GND

GROMMET

ACTUATOR RELEASE BUTTON

HF23BJ042

Made in Switzerland by Belimo Automation

LR 92800

NEMA 2

LISTED 94D5 TENP IND & REG. EQUIP.

Class 2 Supply

5K

WIP

yel blu ora

35 in-lb (4 Nm)

80...110s

24VAC/DC 50/60 Hz 3VA 2W

COM
1	2	3
blk	red	wht

®

ZONE Controller
					1			1	2
		1		SEC DMP	1
					CW	J2A CCN		LEN	+
			J8		COM		+
3art Number: 33ZCFANTRM					COW			J2B
S/N:
		3					G-		G -
Bus#:								3
Element#:					3
Unit#:							J3	SRVC
		J6
HIGH		CCW COM CW HEAT1	24VAC	HEAT2	1			24VAC	+
	1				6		J1		-
									G
					3

ANTI-

ROTATION TAB

	NOTE: Actuator clamp accepts dampers
HIGH	shafts with the following characteristics:
	Round — 1/4-in. to 5/8-in.
PRESSURE	(6 to 16 mm)
TUBING
ROUTING	Square — 1/4-in. to 7/16-in.
	(6 to 11 mm)
	Damper shaft must be a minimum of 1.5-in.
	(38 mm) long.

→Fig. 2 — Zone Controller Physical Details (33ZCFANTRM Shown)

R E L A T I V E H U M I D I T Y S E N S O R — The 33AMSENRHS000 relative humidity sensor is required for zone humidity control (dehumidification).

NOTE: The relative humidity sensor and CO2 sensor cannot be used on the same zone controller.

INDOOR AIR QUALITY (CO2) SENSOR — An indoor air quality sensor is required for optional demand control ventila- tion. The CGCDXSEN002A00 CO2 Sensor is an indoor, wall mounted sensor with an LED display. The CGCDXSEN003A00 CO2 Sensor is an indoor, wall mounted sensor without display.

NOTE: The relative humidity sensor and CO2 sensor cannot be used on the same zone controller.

Mount Zone Controller

LOCATION — The zone controller must be mounted on the air terminal’s damper actuator shaft. For service access, there should be at least 12 in. of clearance between the front of the zone controller and adjacent surfaces. Refer to Fig. 6.

MOUNTING — Perform the following steps to mount the zone controller:

1.Visually inspect the damper and determine the direc- tion in which the damper shaft moves to open the damper — clockwise (CW) or counterclockwise (CCW). Refer to Fig. 7.

If the damper rotates CCW to open, it does not require any configuration changes.

If the damper rotates CW to open, then the damper actuator logic must be reversed. This is done in the software when performing system start-up and damper calibration test. Do not attempt to change damper rota- tion by changing wiring. This will upset the damper position feedback potentiometer readings.

2.Rotate the damper shaft to the fully closed position. Note direction of rotation.

3.Press the release button on the actuator and rotate the clamp in the same direction that was required to close the damper in Step 2.

4.Press the release button on the actuator and rotate the actuator back one position graduation. Release the but- ton and lock the actuator in this position.

5.Mount the zone controller to the terminal by sliding the damper shaft through the actuator clamp assembly. Secure the zone controller to the duct by installing the screw provided through the grommet in the anti- rotation tab. Be sure the floating grommet is in the center of the slot. Failure to center the grommet may cause the actuator to stick or bind.

6.Tighten the actuator clamp assembly to the damper shaft. Secure by tightening the two 10-mm nuts.

7.If the damper has less than 90 degrees of travel between the fully open and fully closed positions, then a mechanical stop must be set on the actuator. The mechanical stop prevents the damper from opening past the maximum damper position. To set the mechanical stop, perform the following procedure:

a.Press the actuator release button and rotate the damper to the fully open position.

b.Using a Phillips screwdriver, loosen the appropri- ate stop clamp screw.

c.Move the stop clamp screw so that it contacts the edge of the cam on the actuator. Secure the stop clamp screw in this position by tightening the screw.

8.Verify that the damper opens and closes. Press the actuator release button and rotate the damper. Verify that the damper does not rotate past the fully open position. Release the button and lock the damper in the fully open position.

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