13
ENGLISH
Performing leak test & insulation
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 T0.511inch(13mm) or thicker Acrylonitrile Butadien Rubber separately 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.
5 Select the insulation of the refrigerant pipe.
◆
Insulate the gas side and liquid side pipe referring to the thickness
according to the pipe size.
◆
*OEPPSUFNQFSBUVSFPG¡' ¡$BOEIVNJEJUZPGJTUIFTUBOEBSEDPOEJ
-
tion.
If installing in a high humidity condition, use one grade thicker insulator by referring to the table below.
*GJOTUBMMJOHJOBOVOGBWPSBCMFDPOEJUJPOTVTFUIJDLFSPOF
◆
*OTVMBUPSTIFBUSFTJTUBODFUFNQFSBUVSFTIPVMECFNPSFUIBO¡' ¡$
Leak test
Insulation
No gap
NBR(T0.511inch(13mm)or thicker)
*OTVMBUJPODPWFSQJQF
Indoor unit
#FTVSFUPPWFSMBQ
the insulation
Insulation pipe
t .VTUöUUJHIUMZBHBJOTU
body without any gap.
t "MXBZTNBLFUIFTFBNPGQJQFTGBDFVQXBSET
t "MMSFGSJHFSBOUDPOOFDUJPONVTUCFBDDFTTJCMFJOPSEFSUPQFSNJU
FJUIFSVOJUNBJOUFOBODFPSSFNPWJOHJUDPNQMFUFMZ
◆
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 responsable of installer to pressurize the whole
system with nitrogen (using a cylinder with pressure reducer)
at a pressure above 40 bar (gauge).
◆
LEAK TEST WITH R-410A (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 R-410A.
Slim Duct Type
t %JTDIBSHFBMMUIFOJUSPHFOUPDSFBUFBWBDVVNBOEDIBSHFUIFTZTUFN