11
ENGLISH
Performing leak test & insulation
Leak check
The designs and shape are subject to
change according to the model.
LEAKTESTWITHNITROGEN(beforeopeningvalves)
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 pressure
regulator) at a pressure above 4.1MPa (gauge).
LEAKTESTWITHR410A(afteropeningvalves)
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.
Onceyouhavecheckedthattherearenoleaksinthe
system,youcaninsulatethepipingandhose.
1
To avoid condensation problems, place
Acrylonitrile
Butadien Rubber
separately around each refrigerant
pipe.
Note
Always make the seam of pipes face upwards.
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.
No gap
NBR
Insulation cover pipe
Indoor unit
Be sure to overlap
the insulation
Mustfittightlyagainstbody
withoutanygap.
Insulation pipe
Dischargeallthenitrogentocreateavacuumandcharge
thesystem.
Allrefrigerantconnectionmustbeaccessible,inordertopermiteitherunitmaintenanceorremovingitcom-
pletely.
Leak test
Insulation
