Flaring Work - LG Air Conditioner Installation Manual

Installation

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(59.1 in) longer than the pipe
length.
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.
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)
Flaring work
1. Firmly hold copper pipe in a bar with the
dimension shown in table below.
Outside diameter
mm
Ø6.35
Ø9.52
Ø12.7
Ø15.88
Ø19.05
2. Carry out flaring work with the flaring tool.
12 Air Conditioner
A
inch mm
1/4 1.1~1.3
3/8 1.5~1.7
1/2 1.6~1.8
5/8 1.6~1.8
3/4 1.9~2.1
Copper
pipe
90°
Point down
Copper tube
Bar
Copper pipe
Clamp handle
Slanted Uneven Rough
Pipe
Reamer
Flare nut
Handle
Bar
Yoke
Cone
Red arrow mark