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Installation
Preparation of Piping
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure.
1) Cut the pipes and the cable.
n Use the accessory piping kit or the pipes purchased lo-
cally.
n Measure the distance between the indoor and the out-
door unit.
n Cut the pipes a little longer than measured distance.
2) Burrs removal
n Completely remove all burrs from the cut cross section
of pipe/tube.
n Put the end of the copper tube/pipe to downward direc-
tion as you remove burrs in order to avoid to let burrs
drop in the tubing.
3) Flaring work
n Carry out flaring work using flaring tool as shown below.
Indoor Unit ca-
pacity
Liquid
[kW(Btu/h)]
[mm(inch)]
≤ 5.6(19,100) Ø6.35(1/4) Ø12.7(1/2) 0~0.5(0.02)
< 16.0(54,600) Ø9.52(3/8) Ø15.88(5/8)
< 22.4(76,400) Ø9.52(3/8) Ø19.05(3/4)
≤ 28.0(95,900) Ø9.52(3/8) Ø22.2(7/8)
Firmly hold copper tube in a bar(or die) as indicated dimen-
sion in the table above.
4) Check
n Compare the flared work with figure below.
n If flare is noted to be defective, cut off the flared section
and do flaring work again.
22
Outdoor Unit
Pipe
"A"
Gas
Liquid
[mm(inch)]
[mm(inch)]
0.5(0.02)
~0.8(0.03)
0.5(0.02)
~0.8(0.03)
0.5(0.02)
~0.8(0.03)
Copper
tube
Point down
Gas
Bar
[mm(inch)]
0.5(0.02)
~0.8(0.03)
0.8(0.03)
~1.0(0.04)
Copper pipe
1.0(0.04)
~1.3(0.05)
1.0(0.04)
~1.3(0.05)
Smooth all round
Even length
all round
Slanted Uneven Rough
90
Pipe
Reamer
Handle
Bar
"A"
Clamp handle
Red arrow mark
Inside is shining without scratches.
= Improper flaring =
Inclined
Surface
Cracked Uneven
damaged
Yoke
Cone
thickness
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