PIPING EXTENSION BEYOND THE FLARING
FORM (Fig. 5.5)
Outer
diameter of
pipe
Minimum
Ø 6,35 mm
0,7 mm
Ø 9,52 mm
1,0 mm
Ø 12,7 mm
1,0 mm
Ø 16 mm
2,0 mm
Flaring
Form
Fig. 5.5
6. Place flaring tool onto the form.
7. Turn the handle of the flaring tool clock-
wise until the pipe is fully flared.
8. Remove the flaring tool and flare form,
then inspect the end of the pipe for cracks
and even flaring.
116
Step 4: Connect pipes
When connecting refrigerant pipes, be care-
ful not to use excessive torque or to deform
the piping in any way. You should first con-
nect the low-pressure pipe, then the high-
pressure pipe.
Minimum bend radius
When bending connective refrigerant piping,
Fig. 5.4
the minimum bending radius should be 10
cm (See Fig 5.6)
"A"
Maximum
1,3 mm
1,6 mm
1,8 mm
2,2 mm
A
Instructions for connecting piping to
Pipe
indoor unit
1. Align the center of the two pipes that you
will connect (See Fig. 5.7).
Indoor Unit Tube
2. Tighten the flare nut as tight as possible
by hand.
3. Using a wrench, grip the nut on the unit
tubing.
Radius
10 cm
Fig. 5.6
Pipe
Flare Nut
Fig. 5.7