LG ARUN50GS2A Quick Manual page 21

How to connect wiring (U3 Chassis, 2 Fan Model)
- Connect power supply wire to terminal block of control case using
clamps on the supporter and control case as shown figure right.
- Connect communication wire to main PCB terminal block using
clamps on the supporter and main PCB case as shown figure right.
Example Connection of Communication Cable
1Ø, 50Hz
ARUN(V)40GS2A, ARUN(V)50GS2A, ARUN(V)60GS2A
Power supply switch
(Switch fuse : ELCB)
1 Phase 2 Wires
Power supply
50Hz 220~240V
(Main Switch)
Power supply switch
(Switch fuse)
Power supply
1 Phase 50Hz
220~240V
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, mo-
mentary 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.
Between Indoor and Outdoor unit (U3 Chassis, 2 Fan Model)
SODU IDU INTERNET DRY1 DRY2 GND 12V
B A B A B A
3
Between Indoor and Outdoor unit
(U4 Chassis, 1 Fan Model)
Outdoor unit
Indoor unit Dry Contact
IDO IDU DRY1 DRY2 GND
3
The GND terminal is a '–' terminal for the central controller, not Ground Line
: Single phase of power supply line(L, N)
: Communication line (3 line): Wired remote control
: Communication line (2 shield line):
Between Indoor Unit and Outdoor Unit
Pull Box(Installer Option)
4 3 4 3
4 3 4 3
3Ø, 50Hz
ARUN(V)40LS2*, ARUN(V)50LS2*, ARUN(V)60LS2*
Power supply switch
(Switch fuse : ELCB)
3 Phase 4 Wires
Power supply
50Hz 380~415V
(Main Switch)
Power supply switch
(Switch fuse)
Power supply
1 Phase 50Hz
220~240V
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, mo-
mentary 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.
Between Indoor and Outdoor unit (U3 Chassis, 2 Fan Model)
SODU IDU INTERNET DRY1 DRY2 GND
B A B A B A
1Ø, 60Hz
ARUN(V)40GS2A, ARUN(V)50GS2A, ARUN(V)60GS2A
Power supply switch
(Switch fuse : ELCB)
1 Phase 2 Wires
Power supply
60Hz 220~240V
(Main Switch)
Power supply switch
(Switch fuse)
Power supply
1 Phase 60Hz
220V
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
4
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, mo-
mentary blackout or the power goes on and off while the product is
operating, attach a reversed phase protection circuit locally.
4
Running the product in reversed phase may break the compressor
and other parts.
3 Phase 4 Wires Power line(R, S, T, N)
Single Phase of power supply line(L, N)
Communication line (3 line): Wired remote control
Communication line (2 shield line):
Between Indoor Unit and Outdoor Unit
Pull Box(Installer Option)
12V
3 4 3 4
: Single phase of power supply line(L, N)
: Communication line (3 line): Wired remote control
: Communication line (2 shield line):
Between Indoor Unit and Outdoor Unit
Pull Box(Installer Option)
21
3 4