AERMEC CWXR407C Technical And Installation Manual page 20

- remove the covers from the ends of the refrigerator lines and
tighten the fittings on the outdoor unit using two wrenches
to avoid warping the unit structure;
- Connect the vacuum pump to connectors (A) on the gas line
fittings;
- do not open the valves (the vacuum must be generated in
the refrigerator lines and indoor unit);
- generate vacuum conditions of up to 100 to 120 mmHg;
- On completion of the above operations and having finally
disconnected the vacuum pump, fully open the valves by
turning nuts (B) using a 4 mm male hex wrench;
- refit covers (C) and tighten;
- make the condensate drain connection;
- Carry out a final check, making sure that the lines are cor-
rectly positioned. Fix the refrigerator lines and electrical
cables together and anchor with fixing straps.
Mod. CWX
LG Ø [mm]
CS [N.m]
LL Ø [mm]
CS [N.m]
L max. [m]
H max. [m]
LG = gas line
LL = liquid line
CS = joint torque
20
1217
12,7 x 0,81 ( 1 / 2 ")
49 ÷ 59
6,35 x 0,71 ( 1 / 4 ")
15 ÷ 20
15
7
L max. = maximum refrigerant line lenght
H max. = Max. difference of level between indoor and
outdoor units
1 2
3
FIT A LOOP
Max. 15 m.
3 m.
1817
12,7 x 0,81 ( 1 / 2 ")
49 ÷ 59
6,35 x 0,71 ( 1 / 4 ")
15 ÷ 20
15
7
C
A
B
CWX
Max.
+7 m.
Max.
-7 m.
2417
15,88 x 0,81 ( 5 / 8 ")
62 ÷ 76
6,35 x 0,71 ( 1 / 4 ")
15 ÷ 20
15
7
C
B
C