Electrical Wiring; Flaring Work - LG UM30F Installation Manual

THE INDOOR UNIT INSTALLATION
48

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.
Main power source
Air
Conditioner
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.

Flaring Work

Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.
Cut the pipes and the cable
1
2
3
4
Circuit Breaker
Burrs removal
1. Completely remove all burrs from the cut
2. While removing burrs put the end of the
Use the piping kit accessory or the pipes
purchased locally.
Measure the distance between the indoor
and the outdoor unit.
Cut the pipes a little longer than measured
distance.
Cut the cable 1.5 m longer than the pipe
length.
Copper
90°
pipe
cross section of pipe/tube.
copper tube/pipe in a downward direction
while removing burrs location is also
changed in order to avoid dropping burrs
into the tubing.
CAUTION
!
Copper in contact with refrigerants shall be
oxygen-free or de-oxidized, for example
Cu-DHP as specified in EN 12735-1 and
EN 12735-2
Slanted Uneven Rough