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I-98
SM831148
1. Specifications
1-12 Electrical Wiring
General Precautions on Wiring
1) Before wiring, confirm the rated voltage of the unit as
shown on its nameplate, then carry out the wiring
closely following the wiring diagram.
2) Provide a power outlet to be used exclusively for
each unit, and a power supply disconnect and circuit
breaker for overcurrent protection should be provided
in the exclusive line.
3) To prevent possible hazards from insulation failure,
the unit must be grounded.
4) Each wiring connection must be done in accordance
with the wiring system diagram.
Wrong wiring may cause the unit to misoperate or
become damaged.
5) Do not allow wiring to touch the refrigerant tubing,
compressor, or any moving parts of the fan.
6) Unauthorized changes in the internal wiring can be
very dangerous. The manufacturer will accept no
responsibility for any damage or misoperation that
occurs as a result of such unauthorized changes.
7) To prevent possible hazards from insulation failure,
the unit must be grounded.
8) To prevent malfunction of the air conditioner caused
by electrical noise, care must be taken when wiring
as follows:
The remote control wiring and the inter-unit
control wiring should be wired apart from the inter-
unit power wiring.
Use shielded wires for inter-unit control wiring
between units and ground the shield on both
sides.
9) If the power supply cord of this appliance is dam-
aged, it must be replaced by a repair shop appointed
by the manufacturer, because specialpurpose tools
are required.
10)All wiring used must be Class 1.
Recommended Wire Length and Wire Diameter for Power Supply System
You must follow LOCAL ELECTRICAL CODES for wiring.
Outdoor Unit
Model Name (A) Power Supply
Trade Size
of Conduit
3/4 in.
3/4 in.
3/4 in.
Trade Size
of Conduit
1-1/4 in.
1-1/4 in.
1-1/4 in.
Power Supply Terminal Base
* AWG = American Wire Gaug
50 A
50 A
50 A
Capacity Max. Wire Diameter
AWG #6
AWG #6
AWG #6
MOP
(Fuse or HACR
type circuit breaker)
30 A
35 A (230/208 V)
35 A (230/208 V)
AWG #12
Max. length 64 ft.
AWG #10
Max. length 92 ft.
AWG #10
Max. length 92 ft.
CH2672R
CH3072R
CH3672R
3/4 in. 1-1/4 in.50 A AWG #640 A
AWG #10
Max. length 81 ft.
CH4272R
Model Name (A) Power Supply
Trade Size
of Conduit
3/4 in.
3/4 in.
3/4 in.
Trade Size
of Conduit
1-1/4 in.
1-1/4 in.
1-1/4 in.
Power Supply Terminal Base
50 A
50 A
50 A
Capacity Max. Wire Diameter
AWG #6
AWG #6
AWG #6
MOP
(Fuse or HACR
type circuit breaker)
25 A
30 A (230/208 V)
30 A (230/208 V)
AWG #12
Max. length 76 ft.
AWG #10
Max. length 99 ft.
AWG #10
Max. length 99 ft.
C2672R
C3072R
C3672R
3/4 in. 1-1/4 in.50 A AWG #6
35 A
AWG #10
Max. length 81 ft.
C4272R
e