Fig. 40: Flanging the refrigerant piping
1: Flanging tool
Fig. 41: Correct flange shape
Fig. 42: Tightening the fitting
1: Tighten with the first open-ended spanner
2: Counter with the second open-ended spanner
Pipe dimension in
inches
Tightening torque in Nm
1/4" 15-20
3/8" 33-40
1/2" 50-60
5/8" 65-75
3/4" 95-105
6.3
Additional notes on connecting
the refrigerant piping
n When combining the outdoor unit with some
indoor units, the procedure for connecting the
refrigerant piping may differ. Install the pro-
vided reducer or expansion fittings to the
indoor unit.
n If the basic length of the connecting line
exceeds 5m, add refrigerant when commis-
sioning the system for the first time (see
chapter "Adding refrigerant").
35
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