Electrical Wiring; General Precautions On Wiring; Recommended Wire Length And Wire Diameter For Power Supply System - Sanyo SPW-C256VH Technical Data & Service Manual

Electrical Wiring

General Precautions on Wiring

(1) Before wiring, confi rm 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.

Recommended Wire Length and Wire Diameter for Power Supply System

Outdoor unit (Single-Phase)
(A) Power supply
Wire size Max. length
SPW-C256VH 4.0 mm
SPW-C366VH 4.0 mm
SPW-C486VH 6.0 mm
Indoor unit
Type
K
X, XM, T, U, US
Control wiring
(C) Inter-unit (between outdoor and
indoor units) control wiring
2
0.75 mm (AWG #18)
Use shielded wiring
Max. 1,000 m
1
* With ring-type wire terminal.
2
* When (D) and (E) are used together maximum length of 500m for group control, and if the remote controller for
the group control is wireless, the maximum length will be 400m.
Time delay
fuse or circuit
capacity
2
20 m 25 A
2
18 m 25 A
2
20 m 35 A
(B) Power supply Time delay fuse or
2 circuit capacity
2.5 mm
Max.150 m 10A
Max.130 m 10A
(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 fi eld 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.
Outdoor unit (3-Phase)
Wire size Max. length
SPW-C256VH8
SPW-C366VH8
SPW-C486VH8
SPW-C606VH8
(E) Control wiring for group control
2
(AWG #18)
*2
XM,US Types : Max. 500 m (Total)
1-353
(A) Power supply Time delay
fuse or circuit
capacity
2
2.5 mm 58 m
2
2.5 mm 48 m
2
2.5 mm 30 m
2
2.5 mm 26 m
2
0.75 mm (AWG #18)
Use shielded wiring
Max. 200 m (Total)
1
16 A
16 A
16 A
20 A