Samsung AC BXU CH Series - Step 6 Brazing the Refrigerant Pipe

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Installation Procedure
English
Installation Procedure
CAUTION
• While on site and prior to installation, protect or enclose
refrigerant tubing to avoid mechanical damage.
• Be sure to use hard drawn ACR tubing for all piping
Ø3/4"(19.05mm) or greater. If you use annealed copper
for 3/4" (19.05mm), the pipe may break which can
result in an injury.
After
connecting
the pipes, block
the part .
Make at least one round:
It will reduce noise and vibration
The designs and shape are subject to change according to the model.
(A) Heat radiation holes
Do not block the holes.
Pipe outlet
• The refrigerant pipe can be pulled out from front, side,
rear and bottom side, so install it depending on the
installation site condition.
CAUTION
• Cut the pipe outlet to the exact pipe size. In addition,
remove foreign substances and burr around the outlet.
• Make sure not to damage the exterior of the outdoor
unit.
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never tap with a hammer near the pipe outlet.
Otherwise, it may cause product damage such as
warping of the cabinet.
• After connecting the pipes with Pipe outlet, plug the
space around the pipes.
• After connecting the pipes, proceed exactly as directed
in the guide to prevent interference with the internal
parts.
• After installing pipes, block the unused knock outs to
prevent small animals from entering. However, the
radiant heat hole(A) should be able to intake air.
Step 6 Brazing the refrigerant pipe
Important information for refrigerant pipe work
• Make sure that there is no moisture inside the pipe.
• Make sure that there are no foreign materials and
impurities in the pipe.
• Make sure that there is no leak.
• Make sure to follow the instruction when brazing and
keeping the pipe.
Nitrogen flushing while brazing
• Use dry nitrogen gas when brazing the pipes as shown
in the picture.
• If you do not perform nitrogen flushing when brazing
the pipes, oxide may form inside the pipe. It can
cause the damage of the important parts such as
compressor, valves.
• Adjust the flow rate of the Nitrogen flushing with a
pressure regulator to maintain 0.03 CFH(0.05怺/hr) or
less.
Brazing part
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Shut-off
valve
Taping
Flow meter
High pressure hose
Pressure regulator
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