Samsung AM NJD Series Installation Manual

Also see for AM NJD Series: User manual

Contents

Samsung AM NJD Series Installation Manual Manual pdf 12 page image

12APerforming leak test & insulationInsulationOnce 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 thickerAcrylonitrile Butadien Rubber separately around eachrefrigerant pipe.Note Always make the seam of pipes face upwards.2 Wind insulating tape around the pipes and drain hoseavoiding to compress the insulation too much.3 Finish wrapping insulating tape around the rest of thepipes leading to the outdoor unit.4 The pipes and electrical cables connecting the indoorunit with the outdoor unit must be fixed to the wall withsuitable ducts.Leak testLEAK TEST WITH NITROGEN (before opening valves)In order to detect basic refrigerant leaks, before recreating thevacuum and recirculating the R410A, it’s responsible of installerto pressurize the whole system with nitrogen (using a pressureregulator) at a pressure above 4.1MPa (gauge).LEAK TEST WITH R410A (after opening valves)Before opening valves, discharge all the nitrogen into the systemand create vacuum. After opening valves check leaks using aleak detector for refrigerant R410A.Discharge all the nitrogen to create a vacuum andcharge the system.All refrigerant connection must be accessible, in orderto permit either unit maintenance or removing itcompletely.No gapNBR(T13.0 or thicker)Indoor unitBe sure to overlapthe insulationInsulation cover pipeInsulation pipeMust fit tightly against bodywithout any gap. The designs and shape are subject to changeaccording to the model.