Blueridge BM12M22CNS Manual de instalação - Página 16
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6. Place flaring tool onto the form.
7. Turn the handle of the flaring tool clockwise 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.
Step 4: Connect pipes
When connecting refrigerant pipes, be careful not
to use excessive torque or to deform the piping in
any way. You should first connect the low-pressure
pipe, then the high-pressure pipe.
MINIMUM BEND RADIUS
When bending connective refrigerant piping,
the minimum bending radius is 4in. See
Fig.6.6.
Radius
Torque Requirements
Outer Diameter of Pipe (inch)
1/4"
3/8"
1/2"
5/8"
DO NOT USE EXCESSIVE TORQUE
Excessive force can break the nut or damage the refrigerant piping. You must not exceed torque
requirements shown in the table above.
Page 16
≥4in
Fig 6.6
Tightening Torque (ft/lb)
Note: Use of an approved refrigerant sealant is
recommended for all flare joint connections.
Instructions for Connecting Piping to
Indoor Unit
1. Align the center of the two pipes that you will
connect. See Fig. 6.7.
Indoor unit tubing
2. Tighten the flare nut as tightly as possible by
hand.
3. Using a spanner, grip the nut on the unit
tubing.
4. While firmly gripping the nut on the unit
tubing, use a torque wrench to tighten the
flare nut according to the torque values in the
Torque Requirements table below. Loosen
the flaring nut slightly, then tighten again.
Add. Tightening Torque (ft/lb)
11 ft/ lb
18 ft/ lb
25 ft/ lb
33 ft/ lb
Flare nut
Pipe
Fig 6.7
Fig 6.8
12 ft/ lb
20 ft/ lb
26 ft/ lb
35 ft/ lb
Revised 5/14/2020