Electrical Data; Wiring - Carrier 40MB C Series Service Manual

ELECTRICAL DATA

OPER. VOLTAGE OPER. VOLTAGE
UNIT SIZE
MAX / MIN*
9
12 253 / 187
18
LEGEND
FLA − Full Load Amps

WIRING

All wires must be sized per NEC (National Electrical Code) or
CEC (Canadian Electrical Code) and local codes. Use the Electrical
Data table MCA (minimum circuit amps) and MOCP (maximum
over current protection) to correctly size the wires and the
disconnect the fuse or breakers respectively.
Per the caution note, only Stranded copper conductors with a 600
volt rating and double insulated copper wire must be used.
NOTE: The use of BX cable is not recommended.
Recommended Connection Method for Power and
Communication
Wiring − Power and Communication Wiring:
The main power is supplied to the outdoor unit. The field supplied
14/3 power/communication wiring from the outdoor unit to the
indoor unit consists of four (4) wires and provides the power for
the indoor unit.
Two wires are high voltage AC power, one is the communication
wiring and the other is a ground wire.
Recommended Connection Method for Power and
Communication Wiring (To minimize
communication wiring interference)
PowerWiring:
The main power is supplied to the outdoor unit. The field supplied
power wiring from the outdoor unit to the indoor unit consists of
three (3) wires and provides the power for the indoor unit. Two
wires are high voltage AC power and one is a ground wire.
To minimize a voltage drop, the factory recommended wire size is
14/2 stranded with a ground.
Communication Wiring:
A separate shielded stranded copper conductor only, with a
minimum 600 volt rating and double insulated copper wire, must
be used as the communication wire from the outdoor unit to the
indoor unit.
Please use a separate shielded 16GA stranded control wire.
Table 4—Cassette Indoor Unit Electrical Data
INDOOR FAN
V-PH-HZ FLA
0.146
208-230/1/60 0.146
0.146
HP W
0.061 46
Refer to outdoor unit installation instructions –
0.061 46
Indoor unit powered by the outdoor unit Indoor unit powered by the outdoor unit
0.061 46
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S Wires should be sized based on NEC and local codes.
S Use copper conductors only with a 600 volt rating and
double insulated copper wire.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S Be sure to comply with local codes while running wire
from indoor unit to outdoor unit.
S Every wire must be connected firmly. Loose wiring
may cause terminal to overheat or result in unit
malfunction. A fire hazard may also exist. Therefore, be
sure all wiring is tightly connected.
S No wire should be allowed to touch refrigerant tubing
compressor or any moving parts.
S Disconnecting means must be provided and shall be
located within sight and readily accessible from the air
conditioner.
S Connecting cable with conduit shall be routed through
hole in the conduit panel.
6
MAX FUSE CB AMP MAX FUSE CB AMP