Flare Pipe Ends; Connect Pipes - Airwell SDMX R32 Manual De Instrucciones

Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight
seal.
After removing burrs from cut pipe, seal
1.
the ends with PVC tape to prevent foreign
materials from entering the pipe.
Sheath the pipe with insulating material.
2.
Place are nuts on both ends of pipe. Make
3.
sure they are facing in the right direction,
because you can't put them on or change
their direction after aring.
Flare nut
Copper pipe
4. Remove PVC tape from ends of pipe when
ready to perform aring work.
5. Clamp are form on the end of the pipe.
The end of the pipe must extend beyond
the are form.
Flare form
6. Place aring tool onto the form.
7. Turn the handle of the aring tool
clockwise until the pipe is fully ared. Flare
the pipe in accordance with the dimensions
shown in table .
8. Remove the aring tool and are form,
then inspect the end of the pipe for cracks
and even aring.
PIPING EXTENSION BEYOND FLARE FORM
Pipe Tightening Flare dimension (A)
torque (Unit: mm/Inch)
gauge
Min.
18-20 N.m
Ø 6.35 8.4/0.33
(183-204 kgf.cm)
25-26 N.m
13.2/0.52
Ø 9.52
(255-265 kgf.cm)
35-36 N.m
16.2/0.64
Ø 12.7
(357-367 kgf.cm)
45-47 N.m
19.2/0.76
Ø 16
(459-480 kgf.cm)
65-67 N.m
Ø 19
23.2/0.91
(663-683 kgf.cm)
75-85N.m
Ø 22 26.4/1.04
(765-867 kgf.cm)
Pipe
Flare shape
Max.
90 ° ± 4
8.7/0.34
A
13.5/0.53
R0.4~0.8
16.5/0.65
19.7/0.78
23.7/0.93
26.9/1.06
Step 4: Connect pipes
Connect the copper pipes to the indoor unit rst,
then connect it to the outdoor unit. You should
rst connect the low-pressure pipe, then the
high-pressure pipe.
1. When connecting the are nuts, apply a
thin coat of refrigeration oil to the ared
ends of the pipes.
2. Align the center of the two pipes that you
will connect.
Indoor unit tubing
3. Tighten the are nut as tightly as possible
by hand.
4. Using a spanner, grip the nut on the unit
tubing.
5. While rmly gripping the nut, use a torque
wrench to tighten the are nut according
to the torque values in table .
NOTE: Use both a spanner and a torque
wrench when connecting or disconnecting
pipes to/from the unit.
CAUTION
Ensure to wrap insulation around the piping.
•
Direct contact with the bare piping may
result in burns or frostbite.
Make sure the pipe is properly connected.
•
Over tightening may damage the bell mouth
and under tightening may lead to leakage.
Flare nut Pipe
 Page 29 