Fujitsu AOYA18LALL Installation And Operating Manual page 20

Heat pump, Split, single service
- Depending on the case, connect an adapter
(reducer) ¼''- 3/8'' or 1/2''- 5/8''. (see figure 19).
- Remove the plugs from the pipes and the
refrigeration connections.
- Present the pipe to the flared connector and screw
the nut by hand while holding the connector with a
wrench until contact.
- Comply with the recommended tightening torques.
(see figure 21).
Holding wrench
Torque wrench
20
Designation
Flare nut 6,35 mm (1/4")
Flare nut 9,52 mm (3/8")
Flare nut 12,7 mm (1/2")
Flare nut 15,88 mm (5/8")
Plug (A) 3/8", 1/4"
Plug (A) 1/2"
Plug (A) 5/8"
Plug (B) 3/8", 5/8"
Plug (B) 1/2", 1/4"
Figure 21 - Tightening torque
Coat the flared surface
with POE refrigeration oil
Do not use mineral oil.
Figure 20 - Prevention of gas leaks
Tightening torque
14 to 18 Nm
33 to 42 Nm
50 to 62 Nm
63 to 77 Nm
20 to 25 Nm
25 to 30 Nm
30 to 35 Nm
10 to 12 Nm
12,5 to 16 Nm
Installation and operating manual "1350-EN"