installation manual
18
Locate The Pipe
●
Drill a hole in the wall (suitable just for the size of the wall conduit,
90mm in general), then set on the fittings such as the wall conduit
and its cover.
●
Bind the connecting pipe and the cables together tightly with
binding tapes. Do not let air in, which will cause water leakage
by condensation.
9.3
Insulation
Be sure to with insulating materials cover all the exposed parts
of the flare pipe joints and refrigerant pipe on the liquid-side and
the gas-side. Ensure that there is no gap between them.
Incomplete insulation may cause water condensation.
●
Pass the bound connecting pipe through the wall conduit from
outside. Be careful of the pipe all location to do no damage to the
tubing.
●
Pass the bound connecting pipe through the wall conduit from
outside. Be careful of the pipe all location to do no damage to the
tubing.
Connect the pipes.
Then, open the stem of stop valves of the outdoor unit to make
the refrigerant pipe connecting the indoor unit with the outdoor
unit fluently flow.
Be sure of no leakage by checking it with leak detector or soap
water.
Cover the joint of the connecting pipe to the indoor unit with the
sound proof/insulating sheath (fittings), and bind it well with the
tapes to prevent leakage.
Table.9-1
Fig.9-3
9.
REFRIGERANT PIPE CONNECTION
9.1
Expel The Air
Flaring
Table.9-2
Fig.9-4
●
Cut a pipe with a pipe cutter.
●
Insert a flare nut into a pipe and flare the pipe.
lean crude burr
9.2
Check The Leakage
Fig.9-1
Fasten the nut
●
Put the connecting tubing at the proper position, wrench the
nuts with hands then fasten it with a wrench. (Refer to
Fig.9-4
Check all the joints with the leak detector or soap water. (See
Fig.9-6
as a reference illustration)
A. Lo-stop valve
B. Hi-stop valve
C,D. Joints of the connecting pipe to the indoor unit.
Fig.9-2
●
Too large torque will harm the bell mouthing and too small
will cause leakage. Please determine the torque according
to Table.9-2.
The necessary filling amount of refrigerant
●
Refrigerant volume to be added is calculated according to
outdoor unit installation manual. Be sure to add refrigerant
measuring by a scale. L: The length of the pipe
●
Please record the quantity added and store it carefully for
future maintenance.
Expel the air with a vacuum pump (Refer to
Fig.9-4
) (Please
refer to its manual for the way of using manifold valve)
●
Loosen and remove the maintenance nuts of stop valves A
and B, and connect the charge hose of the manifold valve
with the maintenance terminator of stop valve A. (Be sure
that stop valves A and B are both closed)
Check-point of indoor unit
D
C
B
A
Check-point of outdoor unit
90
90
+_4
A
4 5 _ +
2
Outside diameter
A(mm)
Max
Min
Φ6.4mm
8.7
8.3
Φ9.5mm
12.4
12.0
Φ12.7mm
15.8
15.4
Φ15.9mm
19.0
18.6
Φ19.1mm
23.3
22.9
Tubing size
Torque
Φ6.4mm
14.2~17.2N.m(144~176kgf.cm)
Φ9.5mm
32.7~39.9N.m(333~407kgf.cm)
Φ12.7mm
49.5~60.3N.m(504~616kgf.cm)
Φ15.9mm
61.8~75.4N.m(630~770kgf.cm)
Φ19.1mm
97.2~118.6N.m(990~1210kgf.cm)
Содержание KPDHF-71 DN3.0
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