Installation Manual 55
Electrical Wiring
ENGLISH
Pull Box(Installer Option)
3 Phase 3 Wires
Power supply
60Hz 208/230V
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
The GND terminal is a '–' terminal for the central controller, not Ground Line
(Main Switch)
Between Indoor and Master Outdoor unit
IDU
SODU
DRY1 DRY2 GND 12V
INTERNET
B
A
B
A
Master
Outdoor unit
3(A) 4(B)
3(A) 4(B)
3(A) 4(B)
■
1 Outdoor Unit - 3Ø, 208/230V
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.
Summary of Contents for ARUB290DT2
Page 90: ...90 Outdoor Unit ...
