Samsung NS***CDXEA Series Installation Manual
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Contents
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11ENGLISHPerforming leak test & insulationLeak check The designs and shape are subject tochange according to the model.LEAKTESTWITHNITROGEN(beforeopeningvalves)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).LEAKTESTWITHR410A(afteropeningvalves)Before opening valves, discharge all the nitrogen into thesystem and create vacuum. After opening valves check leaksusing a leak detector for refrigerant R410A.Onceyouhavecheckedthattherearenoleaksinthesystem,youcaninsulatethepipingandhose.1 To avoid condensation problems, place AcrylonitrileButadien Rubber separately around each refrigerantpipe.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.No gapNBRInsulation cover pipeIndoor unitBe sure to overlapthe insulationMustfittightlyagainstbodywithoutanygap.Insulation pipeDischargeallthenitrogentocreateavacuumandchargethesystem.Allrefrigerantconnectionmustbeaccessible,inordertopermiteitherunitmaintenanceorremovingitcom-pletely.Leak testInsulation |
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