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PIPE CONNECTION
22
Preparation of Pipe
Main cause of gas leakage is defect in flaring
work. Carry out correct flaring work in the fol-
lowing procedure.
Cut the pipes and the cable.
- Use the accessory pipe kit 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 1.5m longer than the pipe
length.
Copper
tube
90
Liquid side piping
(Smaller Dia.)
Gas side piping
Burrs removal
(Bigger Dia.)
- Completely remove all burrs from the cut
cross section of pipe.
- Put the end of the copper pipe to downward
direction as you remove burrs in order to
avoid to let burrs drop in the pipe.
Point down
Slanted Uneven Rough
Pipe
Reamer
Welding
- Pipe connections can be done on the front
side or on the side according to the installa-
tion environments.
- Be sure to let 0.2kgf/cm
the pipe when welding.
- If Nitrogen was not flown during welding,
many oxidized membranes may form inside
the pipe and disturb the normal operations of
valves and condensers.
Left sideways
Refrigerant Pipe
Nitrogen
Direction
Taping
2
Nitrogen flow in
Right sideways
Forward
Regulator
Valve
Nitrogen
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