INSTAllATION
15
9
Use copper pipes for cooling systems.
9
Use connecting pipes and tools appropriate for the system's
refrigerant.
0
It is forbidden to use second-hand cooling lines since their
flare connection seal is not guaranteed.
0
It is forbidden to use pre-charged cooling lines.
0
It is forbidden to carry out welding operations with refrig-
erant inside the cooling circuit. If necessary, the refrigerant
must be recovered and the circuit must be cleaned with ni-
trogen without oxygen.
Connections
—
position the connecting pipes
OK
OK
OK
9
Plug the pipe ends in order to prevent water or debris from
flowing in.
9
before threading the lines through the hole in the wall,
close the lines ends.
—
cut the pipe end square using a pipe cutter
—
remove burrs keeping the cut edge facing down
—
remove the flare nut on the unit connection
—
insert it into the connection pipe
—
flare the tube
A
Pipe Ø
A
mm
inches
mm
6,35
1/4
9,1
9,52
3/8
13,2
12,70
1/2
16,6
15,88
5/8
19,7
1 Key
2 Torque wrench
3 Flare nut
2
3
1
Pipe Ø
Tightening torque
mm
inches
Nm
6,35
1/4
18
9,52
3/8
42
12,70
1/2
55
15,88
5/8
60
A
Pipe Ø
A
mm
inches
mm
6,35
1/4
17
9,52
3/8
22
12,70
1/2
26
15,88
5/8
29
—
bring line ends with flare connection close to their cou-
pling on the unit
—
manually rotate the flare nuts by 3 - 4 turns
—
tighten the connections using a spanner and a counter
spanner
9
Use a torque wrench to tighten so as to prevent damage to
flare nuts and gas leaks.
9
During the connection, keep the leak finder on and close to
the unit so that it signals any refrigerant leak.
9
Avoid using the refrigerant oil on the external part of the
flaring.
After connecting the cooling pipes:
—
create a vacuum inside the pipes
—
check for refrigerant leaks
—
apply thermal insulating material on the joints
