C: Putting nut on
Remove flare nuts attached to indoor and outdoor unit, and then put them on pipe/tube having completed burr removal. (Not
possible to put them on after flaring work).
D: Flaring work
Firmly hold copper pipe in a die in the dimension shown in the table below.
Outer dia m . (m m )
Φ 6,35
Φ 9,52
Φ 12,7
Φ 16
Tightening Connection
● Align the center of the pipes.
● Sufficiently tighten the flare nut with fingers, and then tighten it with a spanner and
torque wrench as shown.
CAUTION:
● Excessive torque can break nut depending on installation conditions.
Hex nut diam. (mm)
Φ 6,35
Φ 9,52
Φ 12,7
Φ 16
A (m m )
M a x .
M in
1,3
0,7
1
1,6
1
1,8
1
2
Tightening torque (N.m)
1 5 ~ 2 0
3 1 ~ 3 5
5 0 ~ 5 5
6 0 ~ 6 5
Pipe
38