16
REFRIGERANT PIPE CONNECTION
C.
Putting nut on
Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal (not possible
to put them on after flaring work).
D.
Flaring work
Firmly hold copper pipe in a die in the
dimension shown in the table below.
Out. diameter
A [mm]
Max.
Min.
1/4’’ (
Ф
6.35 mm)
1,3
0,7
3/8’’ (
Ф
9.52 mm)
1,6
1,0
1/2’’ (
Ф
12.7 mm)
1,8
1,0
Tightening connection
•
Align the center of the pipes..
•
Sufficiently tighten the flare
nut with fingers, and then tighten
it with a spanner and torque wrench
as shown.
Warning
•
Excessive torque can break nut
depending on installation conditions.
Recommendations:
•
If refrigerant pipe connections on indoor and outdoor unit are different use
adjustment piece.
•
To prevent unwinding and leakage on the screw connections because of vibrations
use pipe joint sealant 'Leak Lock'.
•
After finishing connections between indoor and outdoor unit we recommend to fill
the
∅
65 mm hole with flexible sealant masses (do not use concrete, plaster, …)
Out. Diam.
Tightening
torque [Nm]
Additional
tightening
torque Nm]
1/4’’ (
Ф
6.35 mm)
15
16
3/8’’ (
Ф
9.52 mm)
25
26
1/2’’ (
Ф
12.7 mm)
35
36
Picture 20
ATTENTION!
Pay attention to the cleanliness!
Use prescribed tools!
Installation must be done by authorized installer!
