Wiring; Connection Diagram - Carrier 619FB Service Manual

WIRING

All wires must be sized per NEC (National Electrical Code) or
CEC (Canadian Electrical Code) 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.
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 indoor
unit consists of four (4) wires and provides the power for the
indoor unit. Two wires are high voltage AC power, one is
communication wiring and the other is a ground wire.
Recommended Connection Method for Power and
Communication Wiring (To minimize communication wiring
interference)
Power Wiring:
The main power is supplied to the outdoor unit. The field supplied
power wiring from the outdoor unit to 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 voltage drop, the factory recommended wire size is
14/2 stranded with a ground.
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.
Please use a separate shielded 16GA stranded control wire.
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
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
S Every wire must be connected firmly. Loose wiring
S No wire should be allowed to touch refrigerant tubing,
S Disconnecting means must be provided and shall be
S Connecting cable with conduit shall be routed through

CONNECTION DIAGRAM

Fig. 9 – Connection Diagram
8
CAUTION
!
rating and 2/64 inch thick insulation.
CAUTION
!
from indoor unit to outdoor unit.
may cause terminal to overheat or result in unit
malfunction. A fire hazard may also exist. Therefore, be
sure all wiring is tightly connected.
compressor or any moving parts.
located within sight and readily accessible from the air
conditioner.
hole in the conduit panel.