Samsung AM HNNDEH/TL Series Installation Manual

9EnglishInstallation Procedure7 Adjust the unit to the appropriate position, taking intoaccount the installation area for the front panel.• Place the pattern sheet on the indoor unit.• Adjust the space between the ceiling and theindoor unit by using a dimension gauge.• Fix the indoor unit securely after adjusting the levelof the unit by using a leveller.• Remove the pattern sheet, connect the othercables. and install the front panel.Indoor unit CeilingGauge of dimensions17 mm20 mmStep 5 Purging inert gas from theindoor unitThe indoor unit comes with nitrogen gas (inert gas)charged at the factory. Therefore, all inert gas must bepurged before connecting the assembly piping.Unscrew the pinch pipe at the end of each refrigerantpipe.Liquid sideGas sideInsulatorNOTE• To prevent dirt or foreign objects from getting into thepipes during installation, do not remove the pinch pipecompletely until you are ready to connect the piping.Step 6 Cutting and flaring the pipes1 Make sure that you have the required tools available:pipe cutter, reamer, flaring tool, and pipe holder.2 If you wish to shorten the pipes, cut them with a pipecutter, ensuring that the cut edge remains at a 90°angle to the side of the pipe. Refer to the illustrationsbelow for examples of edges cut correctly andincorrectly.Pipe cutterPipe90°9Oblique Rough Burr90°3 To prevent any gas from leaking out, remove all burrsat the cut edge of the pipe, using a reamer.4 Slide a flare nut on to the pipe and modify the flare.Pipe FlareDDAFlare90° ±2° R 0.4 to 0.8 mmL45° ±2°Outer Diameter (D) Depth (A) Flare dimension (L)Ø6.35 mm 1.3 mm 8.7 to 9.1 mmØ9.52 mm 1.8 mm 12.8 to 13.2 mmØ12.70 mm 2.0 mm 16.2 to 16.6 mmØ15.88 mm 2.2 mm 19.3 to 19.7 mmØ19.05 mm 2.2 mm 23.6 to 24.0 mm