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Performing leak test & insulation
Leak test
LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks, Pressure test the system to
4.1MPa with oxygen free nitrogen before vacuuming the system.
LEAK TEST WITH R410A (after opening valves)
Once the valves are opened and gauge manifold is disconnected, use a
leak detector to check for leaks.
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Release the nitrogen slowly and safely before connecting
gauges to the Vacuum pump.
CAUTION
Leak check
The designs and shape are subject to change
according to the model.
Insulation
1.
To avoid condensation problems, place
T13.0 or thicker Acrylonitrile
Butadien Rubber
separately around each refrigerant pipe.
NOTE
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Always make the seam of pipes face upwards.
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Any joints in the insulation must be taped or glued with
approved materials to prevent water leaks.
No gap
NBR(T13.0 or thicker)
2.
Wind insulating tape around the pipes and drain hose avoiding to
compress the insulation too much.
Insulation cover pipe
Indoor unit
Be sure to overlap
the insulation
Insulation pipe
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Must fit tightly against
body without any gap.
CAUTION
3.
Finish wrapping insulating tape around the rest of the pipes leading to
the outdoor unit.
4.
The pipes and electrical cables connecting the indoor unit with the
outdoor unit must be fixed to the wall with suitable ducts.
