Flaring Work And Connection Of Piping - LG DELUXE HIGH WALL MINI SPLIT Installation Instructions Manual

FLARING WORK AND CONNECTION OF PIPING

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.
A
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(4.9ft) longer than the pipe length.
Copper
pipe
90°
Burrs removal
B
Completely remove all burrs from the cut
cross section of pipe/tube.
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.
Pipe
Point down
Putting nut on
C
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)
Flare nut
Copper tube
Flaring work
D
Carry out flaring work using flaring tool as shown
below.
Outside diameter
mm
Ø6.35
Ø9.52
Ø12.7
Ø15.88
Firmly hold copper pipe in a die in the dimension
shown in the table above.
Slanted Uneven Rough
Reamer
A
inch mm
1/4 0~0.5
3/8 0~0.5
1/2 0~0.5
5/8 0~1.0
7
Bar
Bar
Copper pipe
Clamp handle
Check
E
Compare the flared work with figure below.
If flare is noted to be defective, cut off the flared
section and do flaring work again.
Smooth all round
Inside is shiny without scratches
Inclined
Even length
all round
Connection of piping
-Indoor
Preparing the indoor unit's piping and drain
hose for installation through the wall.
Route the indoor tubing and the drain hose
A
in the direction of rear left or right
Drain hose
Handle
Yoke
Cone
Red arrow mark
= Improper flaring =
Surface Cracked Uneven
damaged thickness