Flaring Work - LG LA121CNM Installation Manual

Installation

Flaring Work

Main cause for gas leakage is due to defect in 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(59.1in) longer than the
pipe length.
Burrs removal
1. Completely remove all burrs from the cut cross
section of pipe/tube.
2. Put the end of the copper tube/pipe in a
downward direction as you remove burrs 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 flaring work)
Flaring work
• Carry out flaring work using flaring tool as
shown below.
Outside diameter
mm inch
Ø6.35 1/4
Ø9.52 3/8
Ø12.7 1/2
Ø15.88 5/8
16 Room Air Conditioner
A
mm inch
0~0.5 0~0.020
0~0.5 0~0.020
0~0.5 0~0.020
0~1.0 0~0.039
Copper
pipe
90¡
Point down
Copper tube
Firmly hold copper pipe in a die in the
dimension shown in the table above.
Bar
Bar
Copper pipe
Clamp handle
Slanted Uneven Rough
Pipe
Reamer
Flare nut
Handle
Yoke
Cone
Red arrow mark