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REQUIREMENT
• For power supply wiring, strictly conform to the Local
Regulation in each country.
• For wiring of power supply of the outdoor units,
follow the Installation Manual of each outdoor unit.
• Perform the electric wiring so that it does not come
to contact with the high-temperature part of the
pipe.The coating may melt resulting in an accident.
• After connecting wires to the terminal blocks, provide
a trap and fix wires with the cord clamp.
• Run the refrigerant piping line and control wiring line
in the same line.
• Do not turn on the power of the hot water module
until vacuuming of the refrigerant pipes completes.
Power supply wire and
communication wires
specifications
Power supply wire and communication wires are
procured locally.
For the power supply specifications, follow to the table
below. If capacity is little, it is dangerous because
overheat or burnout may be caused.
For specifications of the power capacity of the outdoor
unit and the power supply wires, refer to the Installation
Manual attached to the outdoor unit.
Hot water module power supply
• For the power supply of the hot water module,
prepare the exclusive power supply separated from
that of the outdoor unit.
• Arrange the power supply, circuit breaker, and main
switch of the hot water module connected to the
same outdoor unit so that they are commonly used.
• Power supply wire specification: Cable 3-core 2.5
mm²,
in conformity with Design 60245 IEC 57
.
▼
Power supply
Control wiring, Central controller wiring
• 2-core with polarity wires are used for the Control wiring between indoor unit (including hot water module) and
outdoor unit and Central controller wiring.
• To prevent noise trouble, use 2-core shield wire.
• The length of the communication line means the total length of the inter-unit wire length between indoor
(including hot water module) and outdoor units added with the central control system wire length.
▼
Communication line
Remote controller wiring
• 2-core with non-polarity wire is used for wiring of the remote controller wiring and group remote controllers wiring.
Output signal function wiring
• To prevent noise trouble, use 2-core shield wire.
CAUTION
The remote controller wire (Communication line) and AC 220 –
240 V 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 or other factor.
Power supply
220 V – 240 V ~, 50 Hz
Power supply switch / circuit breaker or power supply wiring / fuse rating for hot water module should be selected by the
accumulated total current values of the hot water module.
Power supply wiring
Below 50 m
2.5 mm
2
Control wiring between indoor units
(including hot water module), and
outdoor unit (2-core shield wire)
Wire size
(Up to 1000 m) 1.25 mm²
(Up to 2000 m) 2.0 mm²
Central control line wiring (2-core shield
wire)
Remote controller wiring, remote controller inter-unit
wiring
Wire size: 0.5 mm² to 2.0 mm²
Total wire length of remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + … Ln
In case of wired type only
Up to 500 m
In case of wireless type
included
Up to 400 m
Total wire length of remote controller inter-unit wiring = L1 + L2 + … Ln
Up to 200 m
Output function wiring (2-core shield wire)
Wire size
(up to 2 m) 0.5 mm²
39-EN
40-EN
Summary of Contents for MMW-AP0271LQ-E
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