Power And Connecting Cables - Carrier 24AHA4 Service Manual

POWER AND CONNECTING
CABLES - - FIELD SUPPLIED
Recommended Connection Method for Power and
Communication Wiring (To minimize
communication wiring interference)
Power Wiring:
The main power is supplied to both, the indoor and the outdoor
units. The field supplied connecting cable consists of three (3)
wires. Two wires are high voltage AC power and one is a ground
wire.
Consult your local building codes and the NEC (National
Electrical Code) or CEC (Canadian Electrical Code) for special
requirements.
All wires must be sized per NEC or CEC and local codes. Use
Electrical Data table MCA (minimum circuit amps) and MOCP
(maximum over current protection) to correctly size the wires and
the disconnect fuse or breakers respectively.
Per caution note, only copper conductors with a minimum 300 volt
rating and 2/64- -inch thick insulation must be used.
Communication Wiring:
A separate shielded copper conductor only, with a minimum 300
volt rating and 2/64- -inch thick insulation, must be used as the
communication wire from the outdoor unit to the indoor unit. To
minimize voltage drop of the communication wire, use the wire
size and maximum lengths shown in table 11.
Table 11—Maximum Lengths
Wire Size
18AWG
16AWG 50 ft. (15 m) to 100 ft. (30 m)
Length ft. (m)
50 ft. (15 m)
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 minimum 300 volt
rating and 2/64 inch thick insulation.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or
death. The kit requires high voltage (230V) non- -metallic field
wire to connect the indoor unit to the kit in the outdoor unit.
Some regions may require metal conduit for this wire. Check
relevant local building codes before installing. DO NOT USE
regular low voltage (24V) thermostat wire for communication
wiring between indoor unit and kit in outdoor unit.
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.
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