57
S4179544
0
0
0
0
0
C
-
-
-
-
-
RC
=
=
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WT
5. ELECTRICAL WIRING
5-1. 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 accor-
dance 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) Regulations on wire diameters differ from locality to
locality. For field wiring rules, please refer to your
LOCAL ELECTRICAL CODES before beginning.
You must ensure that installation complies with all
relevant rules and regulations.
(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 ap-
pointed by the manufacture, because special
purpose tools are required.
Time Delay
Fuse or
Circuit
Capacity
5-2. Recommended Wire Length and Wire Diameter for Power Supply System
Outdoor Unit
* AWG = American Wire Gauge
Indoor Unit
Type
(C) Inter-Unit Control Wiring
(D) Remote Control Wiring
(E) Control Wiring For Group Control
0.75 mm
2
(AWG #18)
0.75 mm
2
(AWG #18)
0.75 mm
2
(AWG #18)
Use Shielded Wiring*
Max. 1,000 m
Max. 1,000 m
Max. 1,000 m
NOTE
*
With ring type wire terminal.
(A) Power Supply
Power Supply Terminal Base
4 mm
2
Capacity
Max. Wire
Diameter
48
Max. 63 m
25 A
25 A
5.5 mm
2
(AWG #10)*
70
Max. 31 m
30 A
50 A
14 mm
2
(AWG #6)*
90
Max. 27 m
35 A
50 A
14 mm
2
(AWG #6)*
Time Delay
Fuse or
Circuit
Capacity
Type
(B) Power Supply
Power Supply Terminal Base
2.5 mm
2
Capacity
Max. Wire
Diameter
X, S, AS, K, T, U, F, FM
Max. 100 m
10 A
25 A
5.5 mm
2
(AWG #10)*
D
Max. 60 m
10 A
50 A
14 mm
2
(AWG #6)*
Control Wiring