ICP HMC009KD, Service Manual

Page: 27 / 83

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(3) Piping and Drainage of Indoor Unit
1) PREPARATION OF PIPINGS
1. Cut the pipes and the cable.
• Use 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(5.0 ft) longer than the length of
the pipe.
2. Remove burrs.
• Remove burrs from cut edges of pipes.
• Turn the pipe end toward down to avoid the metal
powder entering the pipe.
Caution:
If burrs are not removed, they may cause a gas leakage.
3. Flaring the pipes.
• Insert the flare nuts, mounted on the connection
ports of both indoor and outdoor unit, onto the copper
pipes. Some gas may leak, when the flare nuts are
removed from the indoor unit, as some gas is
charged to prevent the inside of the pipe from
rusting.
• Fit the copper pipe end into the Bar of flare tool
about 0.5~1.0mm higher. (See illustration)
• Make a flare at the end of copper pipe with a flare
tool*.
* Use "RIDGID" or equivalent.
4. Tape the flaring portion to protect it from the dust
or damages.
Bar
Yoke
Cone
Handle
Ä
Bar
Copper pipe
When properly flared, the internal surface of the flare will
evenly shine and be of even thickness.
After the flare part comes into contact with the connectors,
carefully check the flare finish.
Pipe cutter
Slanted Rough
Pipe
Point down
Reamer
"A"; ø6.35mm (1/4")
→
0.5mm
ø9.52mm (3/8")
→
0.5 mm
ø12.7mm (1/2")
→
0.5 mm
ø15.88mm (5/8")
→
1.0mm
= Improper flaring =
Inclined
Surface
damaged
Cracked
Uneven
thickness