Carrier 33ZCFANTRM, 33ZCVAVTRM, 33ZCSECTRM specifications Humidity Sensor Wiring

3.Connect the other end of the communication bus cable to the terminal block labeled CCN in the zone control- ler of the first air terminal. Following the color code in Table 3, connect the Red (+) wire to Terminal 1. Connect the White (ground) wire to Terminal 2. Con- nect the Black (–) wire to Terminal 3.

4.Connect additional zone controllers in a daisy chain fashion, following the color coded wiring scheme in Table 3. Refer to Fig. 25.

NOTE: The communication bus drain wires (shield) must be tied together at each zone controller. If the communica- tion bus is entirely within one building, the resulting contin- uous shield must be connected to ground at only one single point. If the communication bus cable exits from one build- ing and enters another building, connect the shields to ground at a lightning suppressor in each building where the cable enters or exits (one point only).

0

H F 2 3 B J 0 4 2

M a d e i n S w i t z e r l a n d b y B e l i m o A u t o m a t i o n

L R 9 2 8 0 0

NEMA2

LISTED

94D5 U TEMP. IND. & L REG. EQUIP.

Class 2 Supply

5K

WIP

yel blu ora

		3 CONDUCTOR
		20 AWG CABLE
		RED
		WHITE	+
			-
		BLACK	499
			RESISTOR
			(SUPPLIED
			W/SENSOR)
		SHIELD
		(IF USED)	HUMIDITY SENSOR
		RH/IAQ
		GND
			+24V
		1
35 in-lb (4 Nm)
80...110s
24VAC/DC
50/60Hz
3VA	2W
COM
1	2	3
blk	red	wht

Fig. 22 — Humidity Sensor Wiring

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