LG UU12 Installation Manual page 29

Electrical Wiring
1. All wiring must comply with LOCAL REGULATIONS.
2. Select a power source that is capable of supplying the current required by the air conditioner.
3. Feed the power source to the unit via a distribution switch board designed for this purpose.
4. The terminal screws inside the control box may be loose due to vibration during transport.
Check the screws for loose connection.
(Running the air conditioner with loose connection can overload and damage electrical
components.)
5. Always ground the air conditioner with a grounding wire and connector to meet the LOCAL
REGULATION.
CAUTION:
• The circuit diagram is not subject to
change without notice.
• Be sure to connect wires according
to the wiring diagram.
• Connect the wires firmly, so that not
to be pulled out easily.
• Connect the wires according to color
codes by referring the wiring
diagram.
Capacity
UU12
UU18/24
UU30
UU37
• The Power cord connected to the unit should be selected according to the
following specifications.
Connecting the cable to Outdoor Unit
1. Remove the Cover control from the unit by
loosening a screw.
Connect the wires to the terminals on the
control board individually as 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.
4. Use a recongnized circuit breaker between
the power source and the unit. A
disconnection device to adequately
disconnect all supply lines must be fitted.
1 Phase 3 Phase
15A
20A
30A
25A
Main power source
Air
Conditioner
Outdoor unit
Terminal block
Over 5mm
Holder for
power supply
cord
Cover control Holder for
connecting
cable
Wiring Connection
Circuit Breaker
Use a 30A circuit breaker
or time delay fuse.
Power supply
cord
Connecting
cable
Installation Manual 29