LG MULTI V IV ARUB080BTE4 User Manual

27
ENGLISH
When the power source is supplied to Each outdoor unit individually.
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)
[Master]
[Indoor Units]
[Slave1] [Slave2] [Slave3]
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
HR unit
Power supply
3Phase 3wires
Power supply
1Phase 2wires
(Main Switch)
R S T
Switch
Fuse
R S T
Switch
Fuse
R S T
Switch
Fuse
R S T
Switch
Fuse
WARNING
When the total capacity is over than as follow, the power source
do not use in series between the units.
The First terminal block could be burnt out. (Heat Pump : 62 Hp)
!
HR unit
Slave1
Outdoor Unit
Master
Outdoor unit
Slave2
Outdoor Unit
Slave3
Outdoor Unit
3 4 3 4 3 4
Master
Outdoor Unit
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12V
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12V
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12V
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12V
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12V
Between Indoor and Master Outdoor unit
The GND terminal at the main PCB is a ‘-’ terminal for dry contact.
It is not the point to make ground connection.
- Make sure that terminal number of master and slave outdoor units
are matched.(A-A,B-B)
WARNING
• Indoor Unit ground wires 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.
!
CAUTION
It should be wiring power cables or communication cables to
avoid interference with the oil level sensor. Otherwise, That oil
level sensor would be operated abnormally.
!
Example) Connection of power and communication cable (UX2)
Main power
terminal block
Ground wire
Power/
Ground cable
Over
50mm(1.97”)
gap
Communication
cable
Main power
terminal block
Ground wire
Power/
Ground cable
Over
50mm(1.97”)
gap
Communication
cable
Main power
terminal block
Ground wire
Power/
Ground cable
Over
50mm(1.97”)
gap
Communication cable
Fix firmly not
to be displaced
Main power
terminal block
Insulation sleeves
attachments
ODU-IDU
Communication cable
ODU-ODU
Communication cable
Main power
terminal block
Ground wire
Power/Ground cable
Over
50mm(1.97”) gap
Communication
cable
Left Side Right Side
Front Side 1 Front Side 2
Main Power Connection Communication Connection
Example) Connection of power and communication cable (UX3)
Main power
terminal block
Ground wire
Power/
Ground cable
Over 50mm
(1.97”)gap
Communication
cable
e
wer
Main power
terminal block
Ground wire
Power/
Ground cable
Over 50mm
(1.97”)gap
Communication
cable
Left Side Right Side
Example) Connection of transmission wire
[BUS type] [STAR type]
- Connection of communication
cable must be installed like
below figure between indoor
unit to outdoor unit.
- Abnormal operation can be
caused by communication de-
fect, when connection of com-
munication cable is installed like
below figure(STAR type).

LG MULTI V IV ARUB080BTE4 Specifications

General

Brand	LG
Model	MULTI V IV ARUB080BTE4
Category	Air Conditioner
Language	English