Samsung NS071LDXEA Manual

Also see for NS035LDXEA: Service manual

Contents

Samsung NS071LDXEA Manual Manual pdf 16 page image

AA16Performing leak test & 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 T13.0 or thicker Acrylonitrile Butadien Rubber separately around each refrigerantpipe.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 the outdoorunit.4 The pipes and electrical cables connecting the indoor unit with the outdoorunit must be fixed to the wall with suitable ducts.5 Select the insulation of the refrigerant pipe. Insulate the gas side and liquid side pipe referring to the thicknessaccording to the pipe size. Indoor temperature of 30°C and humidity of 85% is the stan dard condition.If installing in a high humidity condition, use one grade thicker insulator by referring to the table below.If installing in an unfavorable conditions, use thicker one. Insulator’s heat-resistance temperature should be more than 120°C.Leak testInsulationNo gapNBR(T13.0 or thicker)Insulation cover pipeIndoor unitBe sure to overlapthe insulationInsulation pipe• Must fit tightly againstbody without any gap.• Always make the seam of pipes face upwards.• All refrigerant connection must be accessible, in order to permiteither unit maintenance or removing it completely.• The insulation has to be produced in full compliance of Europeanregulation reg. EEC / EU 2037/ 2000 thatrequires the use of sheaths insulation form without using CFC andHCFC gases for health and the environment. 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 create vacuum. After opening valves checkleaks using a leak detector for refrigerant R-410A.NS035/052/071LDXEANS052/071/090/100/125/140SDXEANS090/100SSXE• Discharge all the nitrogen to create a vacuum and charge the system.