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Electrical Wiring
2. 3Ø, 60Hz
■ ARUN40LH2A, ARUN50LH2A, ARUN60LH2A
3 Phase 4 Wires
Power supply
60Hz 380V
(Main Switch)
Power supply switch
(Switch fuse)
Power supply
1 Phase 60Hz
220V
WARNING
• Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage,
Communication disorder by noise effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power
supply.
• Install the main switch that can interrupt all the power sources in an integrated manner because this system
consists of the equipment utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase, momentary blackout or the power goes on and off
while the product is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor and other parts.
Between Indoor and Outdoor unit
SODU
IDU
INTERNET
B A
B A
B
44
Outdoor Unit
Power supply switch
(Switch fuse : ELCB)
DRY1 DRY2 GND
12V
A
3
3 Phase 4 Wires Power line(R, S, T, N)
Single Phase of power supply line(L, N)
Communication line (3 line): Wired remote control
Communication line (2 shield line): Between Indoor Unit and Outdoor Unit
4
3
4
Pull Box(Installer Option)
3
4
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