Pridiom Cassettes PCM183HX Installation Manual - Manual (Page 17)

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installation manual
2
3
5
6
7
Bind the connecting pipe and the cables together tightly with
binding tapes.
Pass the bound connecting pipe through the wall conduct
from outside. Be careful of the pipe allocation to do on
damage to the tubing.
Connect the pipes. Refer to "How to Connect the pipes" for
details.
Expel the air with a vacuum pump. Refer to "How to expel the
air with a vacuum pump" for details.
open the stop values of the outdoor unit to make the
refrigerant pipe connecting the indoor unit with the outdoor
unit in fluent flow.
Check the leakage. Check all the joints with the leak detector
or soap water.
Cover the joints of the connecting pipe with the soundproof /
insulating sheath (fittings), and bind it well with the tapes to
prevent leakage.
4
Table 7-2
Ш6.4 8.3 8.7
Ш9.5 12.0
Ш12.7 15.4
Ш15.9
Ш19.1
18.6
22.9
R0.4~0.8
45 ° ±
2
90 ° ± 4
A
65 ~ 67N.m
(663 ~ 684 kgf.cm)
45 ~ 47 N.m
(459 ~ 480 kgf.cm)
35 ~ 36 N.m
(357 ~ 367 kgf.cm)
25 ~ 26N.m
(255 ~ 265 kgf.cm)
15 ~ 16 N.m
(153 ~ 163 kgf.cm)
(mm) min max
Pipe gauge Tightening torque
Flare dimensin A
Flare shape
12.4
15.8
19.0
23.3
4
Bend the tubing in proper way. Do not harm to them.
Connect the indoor unit at first, then the outdoor unit.
The bending angle should not exceed 90.
Bending position is preferably in the middle of the
bendable pipe. The larger the bending radius the better it
is.
Do not bend the pipe more than three times.
When connecting the flare nut, coat the flare both inside
and outside with either oil or ester oil and initially tighten
by hand 3 or 4 turns before tighting firmly.
Bend the pipe with thumb
min-radius 100mm Fig.7-4
Fig.7-5
How to Connect the pipes
Flaring 1
Cut a pipe with a pipe cutter. (Refer to Fig.7-1)
Insert a flare nut into a pipe and flare the pipe.
Refer to Table 4 for the dimension of flare nut spaces.
Fig.7-1
90
Lean crude burr
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.
CAUTION
2 Remove the Cycle Service Panel and the Cover
Board, unscrewing the screws which secure it to
the structure
3 Remove the protection cover of stop valve
Fig.7-2
Fig.7-3
Cycle Service Panel
Cover Board
Liquid Valve
Gas Valve
Too large torque will harm the bellmouthing and too small will cause
leakage. Please determine the torque according to Table 7-2.
After the connecting work is finished, be sure to check that there is
no gas leak.
Fig.7-6
How to expel the air with a vacuum pump
CAUTION
Stop valve operation introduction
1. Opening stop valve
2. Closing stop valve
1.
2.
1.
2.
3.
Remove the cap and turn the valve
counterclock-wise with the hexagon wrench.
Turn it until the shaft stops.Do not apply excessive force
to the stop valve. Doing so may breakthe valve body, as
the valve is not a backseat type. Always use the special
tool.
Make sure to tighten the cap securely.
Remove the cap and turn the valve clockwise with the
hexagon wrench.
Securely tighten the valve until the shaft contacts the
main bodyseal.
Make sure to tighten the cap securely.
For the tightening torque, refer to the table below.
Be sure to use both a spanner and torque wrench
together when connecting or disconnecting pipes to /from
the unit.