40
Outdoor Unit
Electrical Wiring
3 Phase 4 Wires
Power supply
50Hz 380-415V
3 Phase 4 Wires Power line(R, S, T, N)
Communication line (3 line): Wired remote control
Single Phase of power supply line(L, N)
Communication line (2 shield line): Between Indoor Unit and Outdoor Unit
The GND terminal is a '–' terminal
for the central controller, not Ground Line
Power supply switch
(Switch fuse : ELCB)
3
4
3
4
3
4
(Main Switch)
IDU
SODU
DRY1 DRY2 GND 12V
INTERNET
B
A
B
A
Power supply
1 Phase 50Hz
220-240V
Power supply switch
(Switch)
Pull Box(Installer Option)
u
Example Connection of Communication Cable
1. 50Hz
WARNING
• Indoor Unit ground Lines are required for preventing electrical shock accident in 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.
