INSTALLATION
23
ENGLISH
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following
procedure.
Cut the pipes and the cable
- Use the accessory piping kit 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 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 to
downward direction as you remove burrs in
order to avoid to let burrs drop in the tubing.
Flaring work
- Carry out flaring work using flaring tool as
shown below.
Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.
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.
Copper
tube
90°
Slanted Uneven Rough
Pipe
Reamer
Point down
Inclined
Inside is shining without scratches.
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Preparation of Piping
Pipe diameter
Inch (mm)
A inch (mm)
Wing nut type Clutch type
Ø 1/4 (Ø 6.35)
0.04~0.07
(1.1~1.8)
0~0.02
(0~0.5)
Ø 3/8 (Ø 9.52)
Ø 1/2 (Ø 12.7)
Ø 5/8 (Ø 15.88)
<Wing nut type>
<Clutch type>
Flare nut
Copper tube
Bar
Copper pipe
"A"
1,MFL67798020, 2018. 4. 26. 7:06 Page 23
www.lgcomfortcooling.co.uk
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