Connect The Cable To The Outdoor Unit - Heat Controller B-MMC09FA-1 Service Manual

Connecting the Cable between Indoor Unit and Outdoor Unit

Connect the cable to the Outdoor unit.

1. Remove the cover control from the unit by loosening the
screw.
Connect the wires to the terminals on the control board
individually as the following.
2. Secure the cable onto the control board with the holder
(clamper).
3. Refix the cover control to the original position with the
screw.
18 kBtu
Teminal on the Indoor Unit
A-UNIT
1 2 3
L1 L2 1 2 3 4
Teminal on the Outdoor Unit
A Indoor
Power Source
208/230V AC
(High voltage)
24 kBtu
Teminal on the Indoor Unit
A-UNIT
1 2
L1 L2 1 2 3
Teminal on the Outdoor Unit Teminal on the Outdoor Unit
A Indoor
Power Source
208/230V AC
(High voltage)
36 kBtu
Teminal on the Indoor Unit
A-UNIT
1 2
L1 L2 1 2 3
Teminal on the Outdoor Unit Teminal on the Outdoor Unit
A Indoor
Power Source
208/230V AC
(High voltage)
NOTICE
:
1. Separately wire the high and low voltage line.
2. Use heat-proof electrical wiring capable of withstanding temperature up to 75°C(167°F).
3. Use outdoor and waterproof connection cable rated more than 300V for the connection between indoor and outdoor unit.
(For example, Type SJOW)
WARNING:
• Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit(size of
wire and wiring method, etc).
• Every wire must be connected firmly.
• No wire should be allowed to touch refrigerant tubing, the compressor or any moving parts.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Teminal on the Indoor Unit
B-UNIT
4 1 2 3
Connecting cable(Low voltage)
1 2 3 4
Teminal on the Outdoor Unit
B Indoor
Teminal on the Indoor Unit
B-UNIT
3 4 1 2 3 4
Connecting cable(Low voltage)
4 1 2 3 4
Teminal on the Outdoor Unit
B Indoor
Teminal on the Indoor Unit
B-UNIT
3 4 1 2 3 4
4 1 2 3 4
Teminal on the Outdoor Unit
B Indoor
Outdoor unit
Over 5mm
Holder for
power supply
cord
4
Cover control
Teminal on the Indoor Unit
C-UNIT
1 2 3 4
Connecting cable(Low voltage)
1 2 3 4
Teminal on the Outdoor Unit
C Indoor
- 32 -
Terminal block
Power supply
Connecting
cable
LGE Internal Use Only
cable