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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 and other indoor units.
• 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,
in conformity with 60245 IEC 57.
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Power supply
Control wiring, Central controller wiring
• 2-core with non-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.
Power supply
220 V – 240 V ~, 50 Hz
Maximum running current
17.5 A
Recommended field fuse
25 A
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
Connecting to SHRM-e
Total wire length between indoor unit and Flow selector unit (L2+L3)
Up to 200 m
Total wire length between remote controller and Flow selector unit (L1+L2+L3)
Up to 300 m
Maximum wire length of remote controller (L1)
Up to 300 m
Output function wiring (2-core shield wire)
Wire size
(up to 2 m) 0.5 mm²
41-EN
42-EN
Summary of Contents for MMW-AP0481CHQ-E
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