48
Outdoor Unit
Electrical Wiring
◆
Example Connection of Communication Cable
1 Outdoor Unit
3
4
3
4
3
4
3 phase 4 wires
power supply
(Main Switch)
Single phase
power supply
3 phase 4 wires power line
Communication line (3 line): wired remote control
Single phase of power supply line
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)
❈
Separate wiring drawing
HR unit
HR unit
Between Indoor and Master Outdoor unit
IDU
SODU
DRY1 DRY2 GND
INTERNET
B
A
B
A
12V
Master
Outdoor unit
Power supply switch
(switch fuse)
Pull box(installer option)
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.
• 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.
CAUTION
You can install below!
The communication cable of HR unit can be installed between indoor unit and indoor unit.
Содержание ARUB100LT2
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