Carrier R-410A Installationsanweisung Seite 3

BENDING
3 - PIPE FLARING
1. Remove protective caps from copper tube ends.
2. Position tube end downward.
3. Cut the tube to the requested length [A].
4. Remove the burrs with a reamer [B].
5. Remove flare nuts from the unit connections and
place them on the tube end.
6. Flare the tube with the flaring tool [C].
Flare end must not have any burrs or imperfections [D].
The length of the flared walls must be uniform [E]
A
1/4"
3/8"
1/2"
5/8"
4 - CONNECTIONS
PIPES
Align the centers of the connecting pipes.
Tighten the flare nut as strong as possible with your fingers.
Tighten it with torque wrench.
Ø A (+0 ÷ -0,4)
6.35 mm 9.1 mm
9.52 mm 13.2 mm
12.7 mm 16.6 mm
15.9 mm 19.7 mm
Shape the pipes by hands.
Avoid pipes flattening or kinking
Avoid unnecessary turns and bends.
90º
[B]
[D]
VALVES
As shown in the figure, use two spanners to unscrew or
tighten the valve flare nut, at gas side.
If using a single spanner, the nut cannot be tightened with
necessary tightening torque.
On the contrary, use a single spanner to loosen or tighten
the flare nut of the valve at liquid side.
[A]
[C]
[E]
3