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Expander
tube pipe
Nut
Flare
%
L
C
ø pipe
Dimensions in mm
L
%
0
C
6.35 (1/4")
1.8 to 2
9.1
17
9.52 (3/8")
2.5 to 2.7
13.2
22
12.7 (1/2")
2.6 to 2.9
16.6
26
15.88 (5/8")
2.9 to 3.1
19.7
29
2.9.3 Flaring
- Cut the tube with a tube cutter to the required length
without deforming it.
- Carefully deburr while holding the tube downwards to
avoid introducing swarf into the tube.
-
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- Flare it leaving the tube protruding fro the expandable
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L
).
It must not be scratched or signs of splitting. Also
check the dimension (
%
).
2.9.4
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The refrigerating tubes must only be formed using a
bending machine or a bending spring in order to avoid
any risks of crushing or splitting.
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Warning!
Remove the insulation locally to bend the tubes.
Do not bend the copper to an angle of more than 90°.
Do not bend the tubes more than 3 times at the same
position otherwise this can cause the pipe to split
(hardening of the metal).
2.9.5
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aligned with its connector to avoid damaging
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required.
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plugs that protect the refrigerating connectors.
- Remove the plugs from the pipes and refrigerating
connections
-
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screw on the nut by hand, holding the connector with a
spanner, until contact is made.
-
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Flare nut 6.35 mm (1/4")
14 to 18 Nm.
Flare nut 9.52 mm (3/8")
33 to 42 Nm.
Flare nut 12.7 mm (1/2")
50 to 62 Nm.
Flare nut 15.88 mm (5/8")
63 to 77 Nm.
Plug (A) 3/8", 1/4"
20 to 25 Nm.
Plug (A) 1/2"
25 to 30 Nm.
Plug (A) 5/8"
30 to 35 Nm.
Plug (B) 3/8", 5/8"
10 to 12 Nm.
Plug (B) 1/2", 1/4"
12.5 to 16 Nm.
Spanner
Torque wrench
Installation and commissioning instructions "1485 - EN"
Heat pump alféa hybrid duo gas
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