Carrier 40RMS, 40RMQ Ð Wiring and Service Access, Side Panel Removed, Cover Removed Typical

Power Supply and Wiring Ð Check the unit data plate to ensure that available power supply matches electri- cal characteristics of the unit. Provide a disconnect switch of size required to provide adequate fan motor starting current. See Tables 4 - 6 for unit electrical data.

Install disconnect switch and power wiring in accordance with all applicable local codes. See Fig. 12-14 and the unit label diagram. For units with motor sizes less than 5 Hp (3.7 kW), connect power wiring to unit with no. 10 ring ter- minal. For units with motor sizes of 5 Hp (3.7 kW) or more, connect power wiring with 1¤4-in. ring terminal.

The 40RM, 40RMQ and 40RMS size 007-016 units (ex- cept 40RM016 with YC or WD option) that have motors wired for 460-v, 3-ph, 60 Hz operation can be ®eld-converted to

230-v, 3-ph, 60 Hz operation. Rewire the motor according to the diagram plate on the motor. After recon®guring the mo- tor, place the sticker specifying 230-v operation (supplied in installation packet) over the 460-v sticker on the units cor- ner post.

Fan motors are factory installed on all units. Indoor-fan contactors are located in the fan contactor box behind the side access panel (see Fig. 12 and 13). Wire the thermostat to the 24-v control circuit terminal block located in the side of the fan contactor control box, according to Fig. 14 or the unit label diagram. If the air handler is part of a split system, complete the wiring from the condensing unit to the ther- mostat shown in Fig. 14.

FAN SCROLL	FAN
	CONTACTOR
	BOX
MOTOR
AND DRIVE	WIRING
	ACCESS
CONDENSATE
DRAIN	FAN DRIVE
CONNECTION
	PULLEY
(HORIZONTAL)
	COIL
FILTER	TXV BULB
ELEMENTS	ACCESS
	REFRIGERANT/
	CHILLED WATER
FILTER	PIPING ACCESS
RETAINER
CLIP	CONDENSATE

FAN CONTACTOR

24V TERMINAL BLOCK

AW RJ 600V

C ° 5 0 1

23 22 21

13 12 11

DRAIN

CONNECTION

(VERTICAL)

TXV Ð Thermostatic Expansion Valve

Fig. 12 Ð Wiring and Service Access

(Side Panel Removed)

POWER WIRING KNOCKOUT

Fig. 13 Ð Fan Contactor Box and Terminal Block

(Cover Removed) (Typical)

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