Performing Leak Test And Insulation - Samsung AM0 SERIES Installation Manual

Performing leak test & insulation
Leak test
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 pressure regulator) at a pressure above 595 PSI (4.1MPa).
LEAK TEST WITH R-410A (after opening valves)
Before opening valves, discharge all the nitrogen in the system and create vacuum. After opening valves check
leaks using a leak detector for refrigerant R-410A.
• Discharge all the nitrogen to create a vacuum and charge the system
CAUTION
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 T13.0mm (0.51") or
thicker Acrylonitrile Butadien Rubber separately around each
refrigerant pipe.
• You can contact the gas side and liquid side pipes but the pipes
should not be pressed together tightly.
• When contacting the gas side and liquid side pipe, use 1 grade
thicker insulator.
Always make the seam of pipes face upwards.
NOTE
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/straps.
• All refrigerant connection must be accessible, in order to
permit either unit maintenance or removing it completely.
CAUTION
AM0**JNZDCH/AA IM ENG_V1.5_07082015
Leak
check
Insulation
Gas pipe
Indoor unit
CAUTION
13
No gap
NBR [T13.0mm (0.51") or thicker]
Insulation
Liquid pipe
Insulation pipe
Be sure to overlap
the insulation
• Must fit tightly against
body without any gap.