Cut Pipes; Remove Burrs; Flare Pipe Ends - INVENTOR V5MFI-66 Benutzer- & Installationshandbuch

Connection Instructions –
Refrigerant Piping
Step 1: Cut pipes
When preparing refrigerant pipes, take extra
care to cut and flare them properly. This will
ensure efficient operation and minimize the
need for future maintenance.
1. Measure the distance between the indoor
and outdoor units.
2. Using a pipe cutter, cut the pipe a little longer
than the measured distance.
3. Make sure that the pipe is cut at a perfect 90°
angle.
90°
Oblique Rough Warped
DO NOT DEFORM PIPE
WHILE CUTTING
Be extra careful not to damage, dent, or
deform the pipe while cutting. This will
drastically reduce the heating ef ciency
of the unit.
Step 2: Remove burrs
Burrs can affect the air-tight seal of refrigerant
piping connection. They must be completely
removed.
Hold the pipe at a downward angle to prevent
1.
burrs from falling into the pipe.
Using a reamer or deburring tool, remove all
2.
burrs from the cut section of the pipe.
Point down
Pipe
Reamer
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
gauge
18-20 N.m
Ø 6.35
(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
(Unit: mm/Inch)
Min. Max.
90 ° ± 4
8.4/0.33 8.7/0.34
A
13.5/0.53
16.5/0.65
19.7/0.78
23.7/0.93
26.9/1.06
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R0.4~0.8
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