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2.6.3.7
Bending Pipes
(1)
The pipes are shaped by your hands. Be careful not to collapse them.
(2)
Do not bend the pipes in an angle more than 90°.
(3)
When pipes are repeatedly bent or stretched, the material will harden, making it difficult to
bend or stretch them any more . Do not bend or stretch the pipes more than three times.
(4)
When bending the pipe, do not bend it as is. The pipe will be collapsed. In this case, cut the
heat insulating pipe with a sharp cutter as shown in Follow Figure, and bend it after exposing the
pipe. After bending the pipe as you want, be sure to put the heat insulating pipe back on the pipe,
and secure it with tape.
NOTE:
① To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature
of 150mm (5-7/8inch) or over.
② If the pipe is bent repeatedly at the same place, it will break.
2.6.3.8
Drill Holes if the Pipes Need to Pass the Wall.
2.6.3.9
According to the Field Condition to Bend the Pipes so that It Can Pass the Wall
Smoothly.
2.6.3.10
Set the Wall Conduit.
2.6.3.11
Set the Supporter for the Pipe.
2.6.3.12
Locate the Pipe and Fix It by Supporter.
➢
For horizontal refrigerant pipe, the distance between supporters should not be exceed 1m.
➢
For vertical refrigerant pipe, the distance between supporters should not be exceed 1.5m.
2.6.3.13
Connect the Pipe to Indoor Unit and Outdoor Unit by Using Two Spanners.
NOTE: Connect the copper pipes to the indoor unit first, then connect it to the outdoor unit. You
should first connect the low-pressure pipe, then the high-pressure pipe.
➢
When connecting the flare nuts, apply a thin coat of refrigeration oil to the flared ends of the pipes.
➢
Align the center of the two pipes that you will connect.
➢
Tighten the flare nut as tightly as possible by hand.
➢
Using a spanner, grip the nut on the unit tubing.
➢
Be sure to use two spanners and proper torque to fasten the nut, too large torque will damage the
bell mouthing, and too small torque may cause leakage. Refer the following table for different pipe
connection.
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