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However, the conventional
tools can be used by
adjusting projection margin
of the copper pipe.
▼ Projection margin in flaring : B (Unit : mm)
Rigid (Clutch type)
Outer diam. of
copper pipe
9.5
15.9
▼ Flaring diam. meter size : A (Unit : mm)
Outer diam. of copper
pipe
9.5
15.9
* In case of flaring for R410A with the
conventional flare tool, pull it out
approx.
0.5 mm more than that for R22 to
adjust to the specified flare size.
The copper pipe gauge is useful for
adjusting projection margin size.
R410A tool
Conventional
used
tool used
R410A
1.0 to 1.5
0 to 0.5
A + 0 ~ A – 0 . 4
13.2
19.7
A
– 12 –
Outdoor Unit Installation Manual
Tightening of Connecting
B
Part
1. Align the centers of the connecting pipes and
fully tighten the flare nut with fingers. Then fix
the nut with a spanner as shown in the figure
and tighten it with a torque wrench.
2. As shown in the figure, be sure to use two
spanners to loosen or tighten the flare nut of the
valve on the gas side. If you use a single
spanner, the flare nut cannot be tightened to
the required tightening torque.
On the other hand, use a single spanner to
loosen or tighten the flare nut of the valve on
the liquid side.
Outer dia. of copper
pipe
9.5 mm (diam.)
15.9 mm (diam.)
Half union or packed valve
Externally
threaded side
Fix with spanner.
Cap
Loosened
Valve at gas side
(Unit: N•m)
Tightening torque
33 to 42 (3.3 to 4.2 kgf•m)
68 to 82 (6.8 to 8.2 kgf•m)
Flare nut
Internally
threaded side
Tighten with torque wrench.
Cover
Piping valve
Tightened
Flare nut
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