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LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks,before recreating the vacuum and
recirculating the R410A, it ’s responsible of installer to pressurize the whole system
with nitrogen (using a cylinder with pressure reducer)at a pressure above 30 bar
(gauge).
LEAK TEST WITH R410A (after opening valves)
Before opening valves, discharge all the nitrogen into the system and create
vacuum. After opening valves check leaks using a leak detector for refrigerant
R410A.
Performing leak test & insulation
Leak Test
Insulation
The designs and shape are subject to change
according to the model.
No gap
NBR[T13.0(1/2") or thicker]
Insulation
Be sure to overlap
the insulation
Discharge all the nitrogen to create a vacuum and charge the system.
All refrigerant connection must be accessible, in order to permit either
unit maintenance or removing it completely.
Once you have checked that there are no leaks in the system, you can
insulate the piping and hose.
1. To avoid condensation problems,place
T13.0 (1/2")or thicker Acryloni-
trile Butadiene Rubber
around each refrigerant pipe.
2. Wind insulating tape around the pipes and drain hose avoiding to
compress the insulation too much.
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.
Always make the seam of pipes face upwards.
Indoor Unit
Must fit tightly against body without any
gap.
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2011-03-28 오후 4:35:35
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