19
INStALLAtION
—
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
Pipe insulation
Connection pipes must be thermally insulated to prevent di-
spersions of heat or formation of condensate.
