3 Piping work and refrigerant charge
Copper refrigerant pipe
SMGB0099 rev.0 - 12/2016
104
3.4.5 Flared connection mounting
Line up the end of the flared pipe to face the fitting to which it is to be threaded.
1 Reducer valve
2 Pressure gauge
3 High pressure pipe.
4 Valve with no packing.
5 Rubber cap
Gently rest the female cone on the male cone and check that the measurement is correct. Keep the connection lined up
with one hand and gently thread on the flare nut with the other.
Tighten the connection to the corresponding tightening torque indicated in the table below.
Nominal diameter
Tightening torque
mm
Inches
Ø6.35
1/4
20 Nm
Ø9.52
3/8
40 Nm
Ø12.7
1/2
60 Nm
Ø15.88
5/8
80 Nm
Ø19.05
3/4
100 Nm
Ø22.20
7/8
–
Ø25.40
1
–
Ø28.60
1-1/8
–
!
C A U T I O N
•
Secure the fixed connection with a suitable wrench and use a torque wrench to tighten the flare nut on the threaded connections.
•
Do not exceed the torque value indicated in the table. The fitting can become misshapen and the connection may leak.
