Electric Work - Toshiba MMK-AP0074MH-E Service Manual

SMMS High-Wall Type
10.

Electric Work

WARNING
• Use the specified wires for wiring connect the terminals. Securely fix them to prevent external
forces applied to the terminals from affecting the terminals.
Incomplete connection or fixation may cause a fire or other trouble.
• Connect earth wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect earth wires to gas pipes, water pipes, lightning conductor or telephone earth wires.
• Appliance shall be installed in accordance with national wiring regulations.
Capacity shortage of power circuit or incomplete installation may cause an electric shock or a fire.
CAUTION
• If incorrect / incomplete wiring is carried out, it will cause an electrical fire or smoke.
• Install an earth leakage breaker that is not tripped by shock waves.
If an earth leakage breaker is not installed, an electric shock may be caused.
• Use the cord clamps attached to the product.
• Do not damage or scratch the conductive core and inner insulator of power and inter-connecting wires
during peeling them.
• Use the power cord and Inter-connecting wire of specified thickness, type, and protective devices
required.
• Do not connect 220 V – 240 V power to the terminal blocks
(Otherwise, the system will fail.)
• 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.
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 indoor unit until vacuuming of the refrigerant pipes completes.
21-EN
Installation Manual
( , , A , B ) for control wiring.
– 21 –
SMMS High-Wall Type
Power supply wire and communication wires specifications
Power supply wire and communication wires are procured locally.
For the power supply specifications, follow to the following table. 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.
Indoor unit power supply
• For the power supply of the indoor unit, prepare the exclusive power supply separated from that of the
outdoor unit.
• Arrange the power supply, circuit breaker, and main switch of the indoor unit 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.
M Power supply
Power supply
Power supply switch / circuit 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 50 m
Control wiring, Central controller wiring
• 2-core with polarity wires are used for the Control wiring between indoor unit 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
and outdoor units added with the central control system wire length.
M Communication line
Control wiring between indoor units, and
Wire size
outdoor unit (2-core shield wire)
Central control line wiring (2-core shield wire) Wire size
Wired remote controller wiring
• 2-core with non-polarity wire is used for wiring of the remote controller wiring and group remote
controllers wiring.
Remote controller wiring, remote controller inter-unit wiring
Total wire length of remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + ... Ln
Total wire length of remote controller inter-unit wiring = L1 + L2 + ... Ln
– 22 –
Installation Manual
220 V – 240 V ~, 50 Hz
220 V ~, 60 Hz
2.5 mm
(Up to 1000 m) 1.25 mm²
(Up to 2000 m) 2.0 mm²
(Up to 1000 m) 1.25 mm²
(Up to 2000 m) 2.0 mm²
Wire size: 0.5 mm² to 2.0 mm²
In case of wired type only Up to 500 m
In case of wireless type included Up to 400 m
Up to 200 m
22-EN