LG Multi V Space ARUV Series, Руководство по установке

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Installation Manual 43
Electrical Wiring
u
Example Connection of Communication Cable
n
1 Outdoor Unit-3Ø, 380V
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
60Hz 380V
Power supply
1 Phase 60Hz
220V
(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.
[BUS type] [STAR type]
• Connection of communication cable must be in-
stalled like below figure between indoor unit to
outdoor unit.
• Abnormal operation can be caused by communi-
cation defect, when connection of communication
cable is installed like below figure(STAR type).
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