Samsung AM JNEPEH Series User & Installation Manual

Contents

Samsung AM JNEPEH Series User & Installation Manual Manual pdf 19 page image

Performing Leak Test & InsulationLeak testLEAK TEST WITH NITROGEN(before opening valves)In order to detect basic refrigerant leaks, before recreating the vacuumand recirculating the R-410A, it’s responsible of installer to pressurize thewhole system with nitrogen(using a pressure regulator) at a pressure above4.1MPa(gauge).LEAK TEST WITH R-410A(after opening valves)Before opening valves, discharge all the nitrogen into the system andcreate vacuum. After opening valves check leaks using a leak detector forrefrigerant R-410A.• Discharge all the nitrogen to create a vacuum and chargethe system.CAUTIONLeak testInsulationOnce 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 or thicker AcrylonitrileButadien Rubber separately around each refrigerant pipe.• Always make the seam of pipes face upwards.NOTE2. Wind insulating tape around the pipes and drain hose avoiding tocompress the insulation too much.3. Finish wrapping insulating tape around the rest of the pipes leading tothe outdoor unit.4. The pipes and electrical cables connecting the indoor unit with theoutdoor unit must be fixed to the wall with suitable ducts.• All refrigerant connection must be accessible, in order topermit either unit maintenance or removing it completely.CAUTIONNo gapNBR(T13.0 or thicker)Be sure to overlap the insulationIndoor unitInsulation cover pipeInsulation pipe• Must fit tightly against bodywithout any gap.CAUTION04 INSTALLATIONEnglish-19