LG LB-B2156QC Owners & Installation Manual page 22

Connecting Cables between Indoor and Outdoor Unit
30K BTU/h
Applied Model:- JB-B2258QC / LB-B2258QC.
1) Connecting cables to the indoor Unit
Connect the wires to the terminals on the control board individually according to the
outdoor unit connection.
Ensure that the color of the wires of outdoor unit and the terminal No. are the same as

those of indoor unit respectively.
1) Input 3-phase power supply into outdoor, cable specification 4 core 2.5 sq mm2 & Separable
Earthing Wire.
Outdoor terminal block A
3
1 2
R Y B
Note : GND = Ground Earthing
2) For connection between of Indoor and Outdoor unit & wire specification 4 core , 1.25 sq mm2 .
Outdoor terminal block
Indoor terminal block
The power cord connected to the outdoor unit should be
with the following specifications
If the supply cord is damaged, it must be replaced by a special cord or assembly availible from the manufacturer of its service agent.
WARNING
Make sure that the screws of the terminal are free from looseness.
2) Clamping of cables
1) Arrange 2 power cables on the control panel.
2) First, fasten the steel clamp with a screw to the inner boss of control panel.
3) For the cooling model, fix the other side of the clamp with a screw strongly.
JB-B2258QC
Outdoor terminal block B
5 6
GND N
JB-B2258QC
2 3 4
RD BK BR
1 2 3
Note : GND = Ground Earthing
NORMAL CROSS-SECTIONAL AREA
Capacity 3 Phase
2
30K BTU/h 2.5mm
Outdoor terminal block A
1 2
R Y
5
Terminal B
GND
GND
CAUTION
The connecting cable connected to the indoor and outdoor
unit should be with the following specifications
22
LB-B2258QC
Outdoor terminal block B
3 7 8
B
N GND
LB-B2258QC
8 9 10
GND RD BK
1 2
GND
NORMAL
CROSS-SECTIONAL
AREA
1.25mm 2 (30K)
11
Terminal B
BR
3