Samsung DH140CAV Installation Manual

Also see for DH105CAV: User guide Service manual User manual

E-12Performing leak test & insulationA BNo gapNBR(0.511inch(13mm)orthicker)Insulation cover pipeIndoor unitBe sure to overlapthe insulationCAUTIONMust fit tightly against bodywithout any gap.InsulationOnce you have checked that there are no leaks in the system,you can insulate the piping and hose.1 To avoid condensation problems, place T0.511inch(13mm) or thickerAcrylonitrile Butadien Rubber separately around each refrigerant pipe.Note Always make the seam of pipes face upwards.2 Wind insulating tape around the pipes and drain hose avoiding to compressthe insulation too much.3 Finish wrapping insulating tape around the rest of the pipes leading to theoutdoor unit.4 The pipes and electrical cables connecting the indoor unit with the outdoorunit must be fixed to the wall with suitable ducts.All refrigerant connection must be accessible, in order to permiteither unit maintenance or removing it completely.CAUTIONLEAK TEST WITH NITROGEN (before opening valves)In order to detect basic refrigerant leaks, before recreating the vacuum andrecirculating the R-410A, it’s responsable of installer to pressurize the wholesystem with nitrogen (using a cylinder with pressure reducer)at a pressure above 30 bar (gauge).LEAK TEST WITH R-410A (after opening valves)Before opening valves, discharge all the nitrogen into the system and createvacuum. After opening valves check leaks using a leak detector for refrigerantR-410A.Leak testDischarge all the nitrogen to create a vacuum and chargethe system.CAUTIONAir Marketing Group LLC141 Kinderkamack Rd, Park Ridge, NJ 07656 Tel: 201-782-1782 Fax: 201-782-1783 Web: www.amgair.com Email: info@amgair.com