Flaring Work - LG AMNQ24GTPB0 Installation Manual

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
Use the piping kit accessory or the pipes
purchased locally.
2
Measure the distance between the indoor
and the outdoor unit.
3
Cut the pipes a little longer than measured
distance.
4
Cut the cable 1.5 m longer than the pipe
length.
Copper
90°
pipe
Burrs removal
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. While removing burrs put the end of the
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
Putting nut on
- Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal. (not possible
to put them on after finishing flare work)
Flare nut
Copper tube
Flaring work
1
Firmly hold copper pipe in a bar with the di-
mension shown in below table table below.
2
Carry out flaring work with the flaring tool.
Pipe diameter
Inch (mm)
Wing nut type
Ø 1/4 (Ø 6.35) 0.04~0.05 (1.1~1.3)
Ø 3/8 (Ø 9.52) 0.06~0.07 (1.5~1.7)
Ø 1/2 (Ø 12.7) 0.06~0.07 (1.6~1.8)
Ø 5/8 (Ø 15.88) 0.06~0.07 (1.6~1.8)
Ø 3/4 (Ø 19.05) 0.07~0.08 (1.9~2.1)
Bar
"A"
Copper pipe
INSTALLATION
23
A inch (mm)
Clutch type
0~0.02
(0~0.5)
<Wing nut type>
<Clutch type>