EN
17
Flare the pipe ends using the special tool. Take care not to
break, crack or split the pipe.
Lubricate the connecting thread with oil for coolant (DO NOT
USE ANY OTHER TYPE OF LUBRICANT).
Screw the pipe nut manually on the connecting thread.
Tighten using a wrench to hold the threaded part of the con-
nector to avoid twisting the pipe and a torque wrench on the
nut calibrated with the following values depending on the
size of the pipe:
Diameter 3/8’’ 34 N.m < tightening torque < 42 N.m
Diameter 5/8’’ 68 N.m < tightening torque < 82 N.m
2 .6 .1
Connection table
Siphons on refrigerant lines are not necessary because the out-
door units compressors are equipped with oil separators.
L
H2
L
H1
Maximum permitted development length
L
m
50
Elevation difference limit between the two units if the external unit is
positioned higher
H1
m
30
Elevation difference limit between the two units if the external unit is
positioned lower
H2
m
15
Connection pipe 3/8’’ and 5/8’’ length without complementary gas charge
m
2 ÷ 30
Complementary R410A charge per metre of pipe between 30 and 50 m
g/m
40
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