Heat Insulation; Flaring Work - LG ARNU18GV1A4 Montageanleitung

Heat insulation

Use the heat insulation material for the
refrigerant piping which has an excellent heat-
resistance (over 120 °C).
Precautions in high humidity circumstance:
This air conditioner has been tested according
to the "KS Standard Conditions with Mist" and
confirmed that there is not any default.
However, if it is operated for a long time in
high humid atmosphere (dew point
temperature: more than 23 °C), water drops
are liable to fall. In this case, add heat
insulation material according to the following
procedure:
Indoor unit
- Heat insulation material to be prepared...
Adiabatic glass wool with thickness 10 to 20
mm.
- Stick glass wool on all air conditioners that
are located in ceiling atmosphere.
Connecting cables to the indoor unit
- Remove the control box cover for electrical
connection between the indoor and out door
unit
- Use the cord clamper to fix the cord.
Control box cover

Flaring Work

Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.
1
2
3
4
Fastening band
Refrigerant piping
Thermal insulator
1. Completely remove all burrs from the cut
2. While removing burrs put the end of the
THE INDOOR UNIT INSTALLATION
Cut the pipes and the cable
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 1.5m longer than the pipe
length.
Copper
90°
pipe
CAUTION
!
(for R32)
• When mechanical connectors are
reused indoors, sealing parts shall be
renewed.
• When flared joints are reused indoors,
the flare part shall be re-fabricated.
Burrs removal
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.
21
Slanted Uneven Rough