V 10/19
86
Procedure for extending the piping
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 pipe
tagliatubi pipe cutter
inclinato slanted
irregolare uneven
sbavatura burred
2. Remove burrs
• Remove burrs with a file,
ensuring they do not go into
the pipe.
tubo pipe
limatrice file
verso il basso downwards
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.
5. Expand the port
Expand the port using a pipe expander.
allargatubi pipe expander
forma dura hard mould
tubo pipe
N.B.:
• "A" varies according to diameter:
Outdoor diameter
(mm)
A (mm)
Max. Min.
6.35 (1/4") 1.3 0.7
9.52 (3/8") 1.6 1.0
12,7(1/2") 1,8 1,0
15,88(5/8") 2,4 2,2
6. Inspection
Check the quality of the expanded port. If
defective, expand the port again following the
procedure described above.
superficie liscia smooth surface
allargamento imperfetto defective expansion
lunghezza uguale equal length
inclinato slanted
superficie danneggiata surface damaged
fessurazione cracked
spessore irregolare uneven thickness
tubo di raccordo - union pipe
Tubo - Pipe
tubo
tagliatubi
inclinato irregolare sbavatura
verso il
basso
tubo
limatrice
allarga-
tubi
forma
dura
tubo
lunghezza uguale
allargamento imperfetto
inclinato
superficie
danneggiata
fessura-
zione
spessore
irregolare
superficie liscia
tubo di raccordo
tubo
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