(2) Piping size
Install the removed flare nuts to
the pipes to be connected, then
flare the pipes.
(3) Limitations for one way piping length and vertical height difference.
Precautions for refrigerant piping
Do not twist or crush piping.
Be sure that no dust is mixed in piping.
Bend piping with as wide angle as possible.
Keep insulating both gas and liquid piping.
Check flare-connected area for gas leakage.
Connecting method (indoor unit)
Apply refrigerant oil at half union as large and flare nut.
To bend a pipe, give the roundness as possible not to crush
the pipe.
When connecting pipe, hold the pipe centre to centre then
screw nut on by hand, refer to Fig.
Be careful not to let foreign matters, such as sands enter
the pipe.
(4) Piping connection
Forced fastening without centering
may damage the threads and cause a
gas leakage.
Pipe dia Fastening torque
Liquid pipe 6.35mm
Gas pipe 15.88mm
Liquid pipe 9.52mm
Gas pipe 19.05mm
14.2-17.2N
.
m
61.8-75.4N
.
m
32.7-39.9N
.
m
97.2-118.6N
.
m
Gas pipe 12.7mm
49.5-60.3N
.
m
Refrigerant piping
8
90+0.5
Installation Procedure
Model
One way piping length
Vertical height difference
(between indoor and outdoor)
less than 30 m
HBU-42CH03
HBU-42CI03
HBU-42HI03
HBU-28CH03 HBU-28HH03
less than 50 m
less than 15 m
less than 30 m
Gas pipe
Liquid pipe
Gas pipe
9.52x0.8mm
15.88x1.0mm
9.52x0.8mm
19.05x1.0mm
Liquid pipe
HBU-42CH03
HBU-42CI03
HBU-42HI03
HBU-28CH03
HBU-28HH03
Все каталоги и инструкции здесь: http://splitoff.ru/tehn-doc.html
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