Samsung AC JNCDEH Series Manual

Contents

10Performing leak test & insulationLeak check❈❈ The designs and shape are subject to changeaccording to the model.LEAK TEST WITH NITROGEN (before opening valves)In order to detect basic refrigerant leaks, before recreating thevacuum and recirculating the R-410A, it’s responsable of installerto pressurize the whole system with nitrogen (using a cylinderwith 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 systemand create vacuum. After opening valves check leaks using a leakdetector for refrigerant R410A.Once you have checked that there are no leaks in the system, youcan insulate the piping and hose.1 To avoid condensation problems, place Acrylonitrile Butadien Rubberseparately around each refrigerant pipe.2 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 to permit either unit maintenance or removing it completely.CAUTIONNo gapEPDM, NBRLeak testInsulationInsulation cover pipeIndoor unitBe sure to overlap theinsulationInsulation pipeMust fit tightly against bodywithout any gap.CAUTIONAlways make the seam of pipes face upwards.NOTE