Blueridge BM12M22CNS Руководство по установке - Страница 15
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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. Refer to Fig. 6.1 for bad cut examples.
90°
Oblique
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.
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.
Point down
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.
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. See Fig. 6.3.
Revised 5/14/2020
Rough
Warped
Fig 6.1
Pipe
Reamer
Fig 6.2
Flare nut
Copper pipe
4. Remove PVC tape from ends of pipe when
ready to perform flaring work.
5. Clamp flare form on the end of the pipe. The end
of the pipe must extend beyond the edge of the
flare form in accordance with the dimensions
shown in the table below.
Fig 6.4
Table 7.1: Torque chart and flaring guide
Pipe
Flaring
Flare dimension
gauge
torque
1/4"
14 ft/ lbs
0.33
3/8"
18 ft/ lbs
0.52
1/2"
26 ft/ lbs
0.64
5/8"
34 ft/ lbs
0.76
Flare form
Fig 6.5
Fig 6.3
Flare shape
(A) (Unit: Inch)
Min.
Max.
90 ° ± 4
0.34
0.53
0.65
0.78
A
Pipe
Page 15
A
R0.4~0.8