When bending the pipe,
do not bend it as is. The
pipe will be collapsed.
In this case, cut the heat
insulating pipe with a
sharp cutter as shown in
Fig. 23, and bend it after
exposing the pipe. After bending the pipe as you
want, be sure to put the heat insulating pipe back on
the pipe, and secure it with tape.
7
• For w Top piping and e Right piping connections,
use the Auxiliary pipe (large pipe) provided.
(See Fig. 26)
Fig. 28
Valve A
(small)
Valve B (large)
Flare nut
Putty
Be sure to apply the pipe against the port on
the indoor unit correctly. If the centering is
improper, the flare nut cannot be tightened
smoothly. If the flare nut is forced to turn, the
threads will be damaged.
Hold the torque wrench at its grip, keeping
it in the right angle with the pipe as shown
in Fig. 27, in order to tighten the flare nut
correctly.
When the flare nut is tightened properly by your hand,
hold the body side coupling with a separate spanner,
then tighten with a torque wrench. (Fig. 27)
Pipe Tightening torque
Small pipe
22.42 to 25.32 ft. lbs
(
310 to 350 kgf
• cm)
Large pipe
57.86 to 72.37 ft. lbs
(800 to 1,000
kgf
• cm
)
Table 4 : Flare nut tightening torque
[Outdoor unit side]
(1) Tighten the flare nut of the connection pipe at the
outdoor unit valve connector. The tightening
method is the same as that as at the indoor side.
(2) Seal with the accessory putty so that water does not
enter at the top of the pipe insulation installed to the
connection pipe (large pipe and small pipe).
(Small pipe)
Connection pipe
(Large pipe)
2. BENDING PIPES
The pipes are shaped by your hands. Be careful not to
collapse them.
3. CONNECTION PIPES
[Indoor unit side]
(1) Remove the filter guide. (Fig. 24)
Do not bend the pipes in an angle less than 90°.
When the pipes are bent and stretched repeatedly, the
material will be hardened, causing the pipes no longer
be sent or stretched. Be sure to limit number of bend-
ing and stretchings to three times.
(2) Attach the connection pipe. (Fig. 25)
Fig. 22
Extend the pipe
by unwinding it.
OK
NO
Fig. 23
Pipe
Heat insulating
pipe
Cutter
Cut line
Fig. 24
Indoor unit
Filter guide
Fig. 25
Indoor unit
Large pipe
Small pipe
Fig. 26
Large pipe
e Right piping
w Top piping
Large pipe
Indoor unit (rear)
Auxiliary pipe (large pipe)
Fig. 27
Body side
Holding wrench
90°
Torque wrench
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