Omni 24K, Owner'S Manual & Installation Manual

Page: 29 / 41

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Page 29
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Refrigerant piping
Connection
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.
Oblique Rough Warped
90°
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 efficiency
of the unit.
Step 2: Remove burrs
Burrs can affect the air-tight seal of refrigerant
piping connection. They must be completely
removed.
Make sure that the pipe is cut at a perfect 90°
angle.
3. Place flare nuts on both ends of pipe.
Make sure they are facing in the right
direction, because you can’t put them on
or change their direction after flaring.
Flare nut
Copper pipe
1. Hold the pipe at a downward angle to
prevent burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove
all burrs from the cut section of the pipe.
Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight
seal.
1. After removing burrs from cut pipe, seal
the ends with PVC tape to prevent foreign
materials from entering the pipe.
2. Sheath the pipe with insulating material.
Pipe
Reamer
Point down
Pipe
6.
Place flaring tool onto the form.
7. Turn the handle of the flaring tool
clockwise until the pipe is fully flared. Flare
the pipe in accordance with the dimensions.
PIPING EXTENSION BEYOND FLARE FORM
Pipe
gauge Tightening
torque
Flare dimension (A)
(Unit: mm/Inch)
Flare shape
Min. Max.
Ø 6.35
R0.4~0.8
45
°±
2
90
°
±
4
A
Ø 9.52
Ø 12.7
Ø 16
Ø 19
Ø 22
65-67 N.m
(663-683 kgf.cm)
23.2/0.91 23.7/0.93
75-85N.m
(765-867 kgf.cm)
26.4/1.04 26.9/1.06
18-20 N.m
(183-204 kgf.cm)
8.4/0.33 8.7/0.34
25-26 N.m
(255-265 kgf.cm)
13.2/0.52 13.5/0.53
35-36 N.m
(357-367 kgf.cm)
16.2/0.64 16.5/0.65
45-47 N.m
(459-480 kgf.cm)
19.2/0.76 19.7/0.78
4. Remove PVC tape from the ends of pipe
when ready to perform flaring work.
5. Clamp
are form on the end of the pipe.
The end of the pipe must extend beyond
the
are form.
Flare form
8. Remove the flaring tool and are form,
then inspect the end of the pipe for cracks
and that it is evenly flared.