SMMS High-Wall Type
Installation Manual
– 16 –
EN
Power supply wire and communication wires specifications
Power supply wire and communication wires are procured locally.
For the power supply specifications, follow the table below. Power supply wiring and communication wiring
are to be procured locally.
For specifications of the power capacity of the outdoor unit and the power supply wires, refer to the
Installation Manual supplied with the outdoor unit.
Indoor unit power supply
• Prepare an exclusive power supply for the indoor unit independently of the outdoor unit.
• Arrange the power supplies to the indoor and outdoor units, so that a common earth leakage breaker and
main switch can be used.
• Power supply wire specification: Cable 3-core 2.5mm²,
in conformity with Design H07 RN-F or 60245
IEC 57
.
▼
Power supply
Control wiring, Central controller wiring
• Use a 2 core non polarity wire.
• To prevent any possible noise issues, use a shielded 2 core wire.
• The total stated length of communication wiring is determined by the interconnecting length of indoor to
outdoor wire plus the length of the central control communication wire.
▼
Communication line
Wired remote controller wiring
This wiring is not required when using the supplied wireless remote controller.
• For wiring remote controllers a 2 core non polarity wire must be used.
CAUTION
The remote controller wire (Communication line) and AC220–240V wires cannot be parallel to contact
each other and cannot be stored in the same conduits. If doing so, a trouble may be caused on the control
system due to noise, etc.
Power supply
220–240V ~ 50Hz
220V ~ 60Hz
Power supply switch/Earth leakage breaker or power supply wiring/fuse rating for indoor units should be selected by
the accumulated total current values of the indoor units.
Power supply wiring
Below 50m
2.5 mm²
Control wiring between indoor units, and outdoor
unit (2-core shield wire)
Wire size
(Up to 1000m) 1.25 mm²
(Up to 2000m) 2.0 mm²
Central control line wiring (2-core shield wire)
Wire size
(Up to 1000m) 1.25 mm²
(Up to 2000m) 2.0 mm²
Wired remote controller wiring, remote controller inter-unit wiring
Wire size: 0.5mm² to 2.0mm²
Total wire length of wired remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + … Ln
In case of wired type only
Up to 500m
In case of wireless type included
Up to 400m
Total wire length of wired remote controller inter-unit wiring = L1 + L2 + … Ln
Up to 200m
16-EN
