Fastening
nut
Align the
connecting
pipe,
tighten it by hand, and then
by a wrench.
4.2
Set
refrigerant pipe
dimension and
pipe
connecting steps
2) ConnectingmodeII
Fig. 4 -3
Connecting mode I
Table 4-2 Ttghtenlng
Torque
14. 2-17. 2
(144-17
6 kgf.cm)
32. 7-39. I
(333-407
kef.cm)
a72.7
I
49.
5-60. 3
(504-616
kgf'cm)
o15.9
I
61.8-75.
4G30-770 kgf.cm)
Fig. 4-2
Tightening Schenatic Diagram
To
prevent
the copper
pipe
from intemal oxidation
upon welding, the copper
pipe
shall
be
filled
with
nitrogen.
Otherwise, the oxide skin will block
the refrigoation
system!
When
fastening-the
nut,
too
strong force will damage the flared socket,
but
too
weak force will result in leakage. Please refer to the tightening
toroue
in the table above to fasten the nuts!
Table 4-3 Definition of
Nme
of
Pip€$
Comecting
Positioo of Pipe
Code
Main
pipe
Pipe
between the outdoor unit sd the fist
distribuior
at the ind@r
uoit side L1
Main
pipe
of hdoor uit
Pipe behind the fNt dishibutor at the indoor
side ud
iodirectly
comected to
the indoor uit
t'z-4
Btrch
pipe
of ind@r mit
Pipe
behird
the
distribulor ed directly connected to the iildoor
unit
A,b, c,
d,
e, f
DisAibutor comDonents of
Pipe components to cm@t the main
pipg
frai!
bruch
pipe
ud bmch
pipe
A,B,C,D,E
Connectins mode I
Fig.4 -4
Connecting mode II
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