6
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
3. FLARING WORK AND PIPE CONNECTION
3-1. FLARING WORK
Pipe diameter
PP
Nut
PP
$PP
Tightening torque
Clutch
W\SHWRRO
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Clutch
W\SHWRRO
for R22
Wing nut
W\SHWRRO
for R22
N•m
kgf•cm
¡´
WR
WR
WR
WR WR
¡´
22
34.3 to 41.2
WR
¡´
26
WR WR WR
¡´
-
WR WR
Tilted Uneven Burred
Good
No good
Burr
Copper pipe
Spare reamer
Pipe cutter
Smooth all
around
Even length
all around
Inside is shin-
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scratches.
Flare nut
Die
Copper pipe
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Flaring tool
:LQJQXWW\SH
3-2. PIPE CONNECTION
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cause refrigerant leakage.
Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in the same
manner applied for indoor unit.
• For tightening, use a torque wrench or spanner and use the same
tightening torque applied for indoor unit.
3-3. INSULATION AND TAPING
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unit.
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-
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• When piping have to be arranged through above ceiling, closet or
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-
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Service port cap
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•cm
4-1. PURGING PROCEDURES AND LEAK TEST
Stop valve
for GAS
Stop valve cap
7RUTXHWR
1P
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Gauge manifold
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Compound pressure
JDXJHIRU5$
±03D
±PP+J
Handle
Low
Handle High
Vacuum pump
IRU5$
Charge hose
IRU5$
&ORVH
2SHQ
Hexagonal wrench
WRWXUQV
Stop valve
for LIQUID
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
Pressure gauge
IRU5$
Precautions when using
the control valve
When attaching the control valve to
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-
form or loosen if excess pressure is
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Service port
Charge hose
IRU5$
%RG\
Close
Open
Control
valve
A
When attaching the control valve to
the service port, make sure that the
valve core is in closed position, and
then tighten part A. Do not tighten
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core is in open position.
Copper
pipe
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remove burrs in order to avoid to let burrs drop in the piping.
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on pipe having completed burr removal. (Not possible to put them on
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shown in the table. Select A mm from the table according to the tool
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ÀDULQJZRUNDJDLQ
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gas pipe. (The stop valve will not work in its initial state fresh out of the
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stop valve on the gas pipe side of the outdoor unit.
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&KHFNWKHYDFXXPZLWKJDXJHPDQLIROGYDOYHWKHQFORVHJDXJHPDQL
-
fold valve, and stop the vacuum pump.
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-
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VKRZV±03D>*DXJH@±PP+J
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$IWHU UHIULJHUDQW SLSHV DUH FRQQHFWHG DQG HYDFXDWHG IXOO\ RSHQ DOO
stop valves on both sides of gas pipe and liquid pipe. Operating with-
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5HIHU WR DQG FKDUJH WKH SUHVFULEHG DPRXQW RI UHIULJHUDQW LI
QHHGHG %H VXUH WR FKDUJH VORZO\ ZLWK OLTXLG UHIULJHUDQW 2WKHUZLVH
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-
fect performance of the air conditioner.
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/HDNWHVW
WARNING
When installing the unit, securely
connect the refrigerant pipes before
starting the compressor.
