26
27
Figure 14
Torque wrench or
double-ended wrench
Outdoor side
Indoor side
Figure 15
Table 1
6.35 mm (1/4”)
180
18
12.7 mm (1/2”)
560
55
15.88 mm (5/8”)
660
65
19.05 mm (3/4”)
1020
100
Flare nut
Tightening(kgf-cm)
Tourque(Nm)
Figure 16
Interconnecting
pipework
(Gas pipe)
Three way valve
(Liquid pipe)
Two way valve
CONNECTING THE PIPING
Pay careful attention to the following points when installing the refrigerant pipes.
●
Hold the pipe with one wrench while tightening the connections with a torque
wrench or double-ended wrench.
Be careful not to damage the flare nut threads.
●
If the tightening torque is insufficient, gas will leak from the connection.
●
If it is too strong, the flare will be damaged. Then gas will leak from connection.
Tighten the nut with the torque shown in Table 1.
a. Remove the indoor pipe flare nut. (Check that there is no debris inside.)
b. Align the center of the flare surface, and tighten the indoor pipe union and
connection pipe flare nut with a torque wrench or double-ended wrench.
(Figure. 15)
While aligning the center of the flare surface, tighten the nut by hand, hold
the union side with a wrench and tighten the nut according to the specified
tightening torque with a torque wrench.
●
Do not bend the pipe more than three times at one place.
●
When extending the rolled pipe, straighten the pipe by unwinding as shown
in Figure 14.
●
Repeat the procedure for flaring the tube to connect to the outdoor unit.
●
Tighten the flare nut of the connection pipe at the outdoor unit valve.
( Figure. 16 )
1) CONNECTING PIPE TO THE INDOOR UNIT
2) CONNECTING THE INTERCONNECTING PIPE TO THE OUTDOOR UNIT VALVE
Summary of Contents for RAS-300ASG
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