5. Tighten the connections, observing the given tightening torques. Apply
refrigerant oil to the beaded parts to facilitate tightening and improve
the seal.
Tab.25 Tightening torque applied
External diameter of
the pipe (mm/inch)
External diameter of
the cone fitting (mm)
Torque load (N.m)
6.35 - 1/4
17
14 - 18
9.52 - 3/8
22
34 - 42
12.7 - 1/2
26
49 - 61
5.9.3
Connecting the refrigerant connections to the outdoor
unit
1. Remove the protective side panels from the outdoor unit.
2. Unscrew the nuts on the stop valves.
Caution
Keep the refrigerant connection in place on the outdoor unit with a
spanner so as not to twist the internal pipe.
(1) Do not use a spanner on this part of the valve, there is a danger of
the refrigerant leaking.
(2) Recommended position of the spanners for tightening the nut.
3. Thread the nuts onto the pipes.
4. Bead the pipes.
5. Apply refrigerant oil to the beaded parts to facilitate tightening and
improve the seal.
6. Connect the pipes and tighten the nuts with a torque wrench.
Caution
Keep the refrigerant connection in place on the outdoor unit with a
spanner so as not to twist the internal pipe.
Tab.26 Torque load
External diameter of
the pipe (mm/inch)
External diameter of
the cone fitting (mm)
Torque load (N.m)
6.35 - 1/4
17
14 - 18
9.52 - 3/8
22
34 - 42
12.7 - 1/2
26
49 - 61
Fig.55
MW-5000512-2
Fig.56
MW-1001302-2
(1)
(2)
(2)
5 Installation
46
7654506 - v06 - 19112019
