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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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