Installation Manual
41
Electrical Wiring
u
Example Connection of Communication Cable
n
1 Outdoor Unit-3Ø, 380-415V
R S T N
Switch
Fuse
L
N
Communication Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Outdoor Unit]
[Indoor Units]
3 Phase 4 Wires
Power supply
50Hz 380-415V
Power supply
1 Phase 50Hz
220-240V
(Main Switch)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Between Indoor and Outdoor unit
B
SODU
IDU
INTERNET DRY1 DRY2 GND 12V
A
B
A
B
A
Outdoor Unit
3
4
3
4
3
4
The GND terminal at the main PCB is a ‘-’ terminal for day
contact, it is not the point to make ground connection.
ENGLISH
• 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 product is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor and other parts.
WARNING
Summary of Contents for Multi V Space ARUV Series
Page 69: ......
