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Digital Inverter
Outdoor Unit Installation Manual
EN
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)
▼
Flaring diam. meter size : A (Unit : mm)
* 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.
Tightening of Connecting
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.
(Unit: N•m)
Outer diam. of
copper pipe
R410A tool
used
Conventional
tool used
R410A
1.0 to 1.5
9.5
0 to 0.5
15.9
Outer diam. of copper
pipe
A + 0 ~ A – 0 . 4
9.5
13.2
15.9
19.7
B
A
Outer dia. of copper
pipe
Tightening torque
9.5 mm (diam.)
33 to 42 (3.3 to 4.2 kgf•m)
15.9 mm (diam.)
68 to 82 (6.8 to 8.2 kgf•m)
Half union or packed valve
Flare nut
Fix with spanner.
Tighten with torque wrench.
Externally
threaded side
Internally
threaded side
Cover
Piping valve
Cap
Tightened
Flare nut
Loosened
Valve at gas side
12-EN
+00EH99861901_01EN_Outdoor6HP_IM.book Page 12 Monday, June 2, 2008 6:00 PM
