Flaring Work - LG CL09R.N20 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 1.5m 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 exam-
ple Cu-DHP as specified in EN 12735-1
and EN 12735-2
Slanted Uneven Rough
THE INDOOR UNIT INSTALLATION
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 Clutch type
Ø1/4 (Ø6.35)
Ø3/8 (Ø9.52)
0.04~0.07
(1.1~1.8)
Ø1/2 (Ø12.7)
Ø5/8 (Ø15.88)
Bar
"A"
Copper pipe
CAUTION
!
• The installation of pipe-work shall be
kept to a minimum
• Flared joint shall be restricted to use
with annealed pipe only, and to pipe
sizes not exceeding a diameter of 20
mm outside diameter.
17
A inch (mm)
0~0.02
(0~0.5)
<Wing nut type>
<Clutch type>