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N.B.:
Improper extension of piping is the main cause of refrigerant leaks. Proceed as shown below:
1. Cut the pipe
•
Check the length of the pipe based on the
distance between the indoor unit and outdoor
unit.
• Cut the required pipe using a pipe cutter.
tubo
inclinato
tubo
tagliatubi
inclinato
irregolare
sbavatura
2. Remove burrs
• Remove burrs with a file,
ensuring they do not go into
the pipe.
verso il
basso
tubo
limatrice
verso il basso
3. Secure an insulating tube
4. Install a union nut
• Remove the union nut on the
indoor connecting pipe and outdoor valve.
Install the union nut on the pipe.
tubo di raccordo
tubo
V 11/15
tagliatubi
irregolare sbavatura
pipe
pipe cutter
slanted
uneven
burred
tubo
limatrice
pipe
file
downwards
5. Expand the port
Expand the port using a pipe expander.
allarga-
tubi
allargatubi
forma dura
tubo
N.B.:
• "A"
varies according to diameter:
Outdoor diameter
(mm)
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
15.88 (5/8")
6. Inspection
Check the quality of the expanded port.
defective, expand the port again following the
procedure described above.
superficie liscia
inclinato
lunghezza uguale
forma
dura
tubo
pipe expander
hard mould
pipe
A (mm)
Max.
Min.
1.3
0.7
1.6
1.0
1.8
1.0
2.4
2.2
allargamento imperfetto
superficie
fessura-
spessore
danneggiata
zione
irregolare
If
29
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