Carrier 40RM Air Cleaner User Manual


 
Power Supply and Wiring 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 Tables4-6forunit 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 field-converted to
230-v, 3-ph, 60 Hz operation. Rewire the motor according to
the diagram plate on the motor. After reconfiguring 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
CONTACTOR
BOX
CONDENSATE
DRAIN
CONNECTION
(HORIZONTAL)
WIRING
ACCESS
COIL
REFRIGERANT/
CHILLED WATER
PIPING ACCESS
CONDENSATE
DRAIN
CONNECTION
(VERTICAL)
MOTOR
AND DRIVE
FAN SCROLL
FILTER
ELEMENTS
FILTER
RETAINER
CLIP
TXV BULB
ACCESS
FAN DRIVE
PULLEY
TXV Thermostatic Expansion Valve
Fig. 12 Wiring and Service Access
(Side Panel Removed)
23
22
21
13
12
11
105°C 600V RJ AW
FAN
CONTACTOR
24V
TERMINAL
BLOCK
POWER
WIRING
KNOCKOUT
Fig. 13 Fan Contactor Box and Terminal Block
(Cover Removed) (Typical)
19