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50 Outdoor Unit
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(R, S, T)>
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.
Electrical Wiring
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