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Flaring Work
Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following proce-
dure.
Cutting 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 out-
door unit.
3. Cut the pipes a little longer than measured distance.
4. Cut the cable 1.5m(5ft) longer than the pipe length.
Removing burrs
1. Completely remove all burrs from the cut cross section
of pipe/tube.
2. While removing burrs put the end of the copper
tube/pipe in a downward direction while removing burrs
location is also changed 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
1. Firmly hold copper pipe in a die in the dimension
shown in the table below.
2. Carry out flaring work wiht the flaring tool.
Pipe diameter
Inch (mm)
Wing nut type
Ø1/4 (Ø6.35)
Ø3/8 (Ø9.52)
0.04~0.07 (1.1~1.8)
Ø1/2 (Ø12.7)
Ø5/8 (Ø15.88)
A inch (mm)
Clutch type
0~0.02 (0~0.5)
Copper
Slanted Uneven Rough
pipe
90
Point down
Flare nut
Copper tube
Bar
"A"
Copper pipe
Installation Manual 11
Installation
Pipe
Reamer
<Wing nut type>
<Clutch type>
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