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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 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.
5-2. Recommended Wire Length and Wire Diameter for Power Supply System
Outdoor unit (Single-phase)
Wire size Max. length
SPW-C366VEH
2.5 mm
SPW-C486VEH
SPW-C606VEH
Indoor unit
Type
K
X, T, U
Control wiring
(C) Inter-unit (between outdoor and
indoor units) control wiring
0.75 mm
2
(AWG #18)
Use shielded wiring*
Max. 1,000 m
NOTE
1
*
With ring-type wire terminal.
2
*
When (D) and (E) are used together with maximum length of 500m for group control, and if the remote controller
for the group control is wireless, the maximum length will be 400m.
DC̲Inverter̲Eng.indd 43
DC̲Inverter̲Eng.indd 43
(A) Power supply
Time delay fuse or
circuit capacity
2
14 m
20 A
4 mm
2
16 m
25 A
6 mm
2
21 m
30 A
(B) Power supply
Time delay fuse or
2
2.5 mm
circuit capacity
Max. 150 m
Max. 130 m
(D) Remote control wiring
0.75 mm
1
Use shielded wiring
Max. 500 m*
(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
damaged, it must be replaced by a repair shop
designated by the manufacturer, because
special-purpose tools are required.
SPW-C366VEH
or
SPW-C486VEH
SPW-C606VEH
10 A
10 A
(E) Control wiring for group control
2
(AWG #18)
2
43
(A) Power supply
Time delay fuse or
circuit capacity
Wire size
Max. length
2.5 mm
2
14 m
20 A
4 mm
2
16 m
25 A
6 mm
2
21 m
35 A
0.75 mm
2
(AWG #18)
Use shielded wiring
Max. 200 m (Total)
GB
FR
DE
IT
PT
GR
ES
2007/07/25 13:21:43
2007/07/25 13:21:43
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