36
COSMOGAS
Ecotower
TIGHTENING TORQUE
Pipe outer diameter
(mm / inch)
Outside diameter of the
conical fitting (mm)
Tightening torque
(Nm)
6,35 - 1/4”
17
14 - 18
9,52 - 3/8”
22
34 - 42
12,7 - 1/2”
26
49 - 61
15,88 - 5/8”
29
69 - 82
Refer to Figure 6-15:
1.- Unscrew both nuts from the taps of the
outdoor unit
,
removing the copper caps and keeping the nuts. Both taps
are supplied with the internal valve
closed
;
2.- Insert the pipes inside the connection nuts;
3.- Expanding the pipes;
4.- Connect the pipes and tighten the nuts with a torque
wrench, referring to the tightening torques indicated in
Figure 6-16.
WARNING!!! Apply refrigerant oil on the expanded
parts to facilitate tightening and improve sealing.
5.- The indoor and outdoor units are now connected as in
Figure 6-17.
6.- Proceed to check the tightness of the refrigerant circuit as
per section 6.15.2.
62403796.01.006
Figure 6-15 - Refrigerant circuit connections
Figure 6-16 - Tightening torque of refrigerant connections
6 - INSTALLATION
6.15.1 - Connections for the refrigerant
gas circuit
Refer to Figure 6-15:
1.- Unscrew both nuts of the
indoor unit
taps, removing the
copper caps and keeping the nuts. Both taps are supplied
with the internal valve
open
;
2.- Insert the pipes inside the connection nuts;
3.- Expanding the pipes;
4.- Connect the pipes and tighten the nuts with a torque
wrench, referring to the tightening torques indicated in
Figure 6-16.
WARNING!!! Apply refrigerant oil on the expanded
parts to facilitate tightening and improve sealing.
WARNING!!! The outdoor unit is supplied pre-
charged with refrigerant gas. Do not open the taps before
having made the connection refrigeration lines and tested
the tightness.
