Connecting Pipes; Preparation Of Piping - LG ATUQ22GPLA4 Manual De Instalación

CONNECTING PIPES

Preparation of Piping

Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following
procedure.
C C ut the pipes and the cable
- Use the piping kit accessory or the pipes pur-
chased locally.
- Measure the distance between the indoor
and the outdoor unit.
- Cut the pipes a little longer than measured
distance.
- Cut the cable 1.5 m longer than the pipe
length.
Burrs removal
- 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.
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
Ø 6.35
Ø 9.52
Ø 12.7
Ø 15.88
Ø 19.05
Firmly hold copper pipe in a bar in the
dimension shown in the table below.
Check
- Compare the flared work with figure below.
- If flare is noted to be defective, cut off the
flared section and do flaring work again.
A
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
CONNECTING PIPES
Copper
Slanted Uneven Rough
tube
90
Pipe
Point down
Flare nut
Copper tube
Bar
Bar
"A"
Copper pipe
Clamp handle
Smooth all round
Inside is shining without scratches.
= Improper flaring =
Inclined Surface
damaged
Even length
all round
13
Reamer
Handle
Yoke
Cone
Red arrow mark
Cracked Uneven
thickness