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ENGLISH
Installation Manual 53
Electrical Wiring
u Example Connection of Communication Cable
n 1 Outdoor Unit - 3Ø, 460V
3 Phase 3 Wires
Power supply
60Hz 460V
Power supply
1 Phase 60Hz
208/230V
Power supply switch
(Switch fuse : ELCB)
Power supply switch
(Switch fuse)
3 Phase 3 Wires Power line(L1, L2, L3)
Communication line (3 line): Wired remote control
Single Phase of power supply line(L(1), L(2))
Communication line (2 shield line): Between Indoor Unit and Outdoor Unit
(Main Switch)
The GND terminal is a '–' terminal for the central controller, not ground line
HR unit
Between Indoor and Master Outdoor unit
IDUSODU DRY1 DRY2 GND
INTERNET
BABA
12V
Master
Outdoor unit
3(A) 4(B) 3(A) 4(B) 3(A) 4(B)
Pull box(installer option)
HR unit
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 prod-
uct is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor and other parts.
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