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Checking gas leakage
Before completing the installation (insulation of the cables, hose and piping and fixing of the indoor unit to
the installation plate), you must check that there are no gas leaks.
LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks, before recreating the vacuum and
recirculating the R-410A, 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 R-410A (after opening valves)
Before opening valves, discharge all the nitrogen into the system and create vacuum
according to page 10.
After opening valves, check leaks using a leak detector for refrigerant.
11
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