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6.3
Connecting the pipes to the
outdoor unit
1 Unscrew the valve unit cover on the side of the
outdoor unit.
2 Remove the protective caps from the valve ends.
3 Apply a little lubricating oil only to the inner surface of
the countersink (B).
4 Align the end of the countersunk pipe with each
valve, then tighten the countersunk nut by hand as far
as possible.
5 Use a wrench to hold the valve body in place. Do not
apply the key to the nut that closes the service valve
(see "Fig. 23").
m
USE A WRENCH TO HOLD THE MAIN
BODY OF THE VALVE.
The torque applied to tighten the countersunk
nut may cause other parts of the valve to detach.
28
Valve group
cover
Fig. 22
6 Holding the valve body firmly, use a torque wrench to
7 Slightly loosen the flared nut, then tighten it again.
8 Repeat steps 3 to 7 for the other pipe.
B
tighten the countersunk nut to the correct torque values.
Fig. 23
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