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Indoor unit connection
Connect both liquid pipe and gas pipe to indoor unit.
Apply a thin coat of refrigeration oil to the seat surface of pipe.
For connection, align the center of both pipe and union, then tighten the first 3 to 4 turns in flare nut by hand.
For tightening the union part of the indoor unit side, use the table below as a standard and tighten the flare section.
Outdoor unit connection
Connect pipes to the pipe joint part of the stop valve in the same method as the indoor unit.
For tightening,use the same tightening torque applied for indoor unit and tig then the flare nut with torque wrench or
spanner.
Insulation and taping
Cover piping joints with pipe cover.
For outdoor unit side, surely insulate every piping including valves.
Using piping tape, apply taping starting from the entry of outdoor unit.
Fix the end of piping tape with adhesive tape.
When piping has to be arranged through above ceiling, closet or area where the temperature and humidity are high,wind
additional commercially sold insulaton for prevention of condensation.
Pipe connection
Pipe diameter
mm
6.35 mm
9.52 mm
N.m
13.7 to 17.7
34.3 to 41.2
kgf.cm
140 to 180
350 to 420
Tightening torque