Home HME030363N - Minimum Bend Radius; Piping Extension Beyond Flare Form

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1. 
Make sure they are facing in the right direction,
since you can’t put them on or change their

Flare Nut
Copper Pipe
2. Remove the PVC tape from the ends of the

3. 
The end of the pipe must extend beyond the

dimensions shown in the table at the upper right.
PIPING EXTENSION BEYOND FLARE FORM
Outer Diameter
of Pipe
(Inch/mm)
A (Inch/mm)
Min. Max.
Ø 0.25" (Ø6.35) 0.0275" (0.7) 0.05" (1.3)
Ø 0.375" (Ø9.52) 0.04" (1.0) 0.063" (1.6)
Ø 0.5" (Ø12.7) 0.04" (1.0) 0.07" (1.8)
Ø 0.63" (Ø16) 0.078" (2.0) 0.086" (2.2)
Flare Form
Pipe
A
4. 
5. 

6. 
Inspect the end of the pipe for cracks and

Step 4: Connect the pipes.
When connecting refrigerant pipes, be careful not
to use excessive torque or deform the piping in

pipe, then the high-pressure pipe.
MINIMUM BEND RADIUS
When bending connective refrigerant piping, the
minimum bending radius is 4 inches.
4 in
Radius
Instructions for Connecting Piping to the Indoor
Unit
1. Align the center of the two pipes that you will
connect.
Indoor Unit Tubing Flare Nut Pipe
2. 
hand.
3. Use a spanner to grip the nut on the unit tubing.
4. 
tubing, use a torque wrench to tighten the

Torque Requirements table below. Loosen the

Refrigerant Piping Connection