Samsung AR12HSFS Series User & Installation Manual

Contents

Samsung AR12HSFS Series User & Installation Manual Manual pdf 39 page image

Installing and connecting the assembly pipe of the indoor unit1. Cut out the appropriate knock-out piece (A, B, C) on the rear of theindoor unit unless you connect the pipe directly from the rear.2. Smooth the cut edges.3. Remove the protection caps of the pipes and connect the assemblypipe to each pipe. Tighten the nuts first with your hands, and then witha torque wrench, applying the following torque:Connect indoor and outdoor units with field-supplied copper pipes by means of flare connections. Use insulated seamlessrefrigeration grade pipe only, (Cu DHP type according to ISO1337), degreased and deoxidized, suitable for operating pressuresof at least 4200 kPa and for burst pressure of at least 20700 kPa. Under no circumstances must sanitary type copper pipe beused.There are 2 refrigerant pipes of different diameters:• The smaller one is for the liquid refrigerant• The larger one is for the gas refrigerantA short pipe is already fitted to the air conditioner. You mayneed to extend the pipe using the assembly pipe (optional).The connection procedure for the refrigerant pipe variesaccording to the exit position of the pipe when facing the wall:• Right(A)• Left(B)• Underside(C)• RearBACOuter Diameter TorqueN•m kgf•cmø6.35 mm 14~18 140~180ø9.52 mm 34~42 350~430ø12.70 mm 49~61 500~620ø15.88 mm 68~82 690~830• If you want to shorten or extend the pipes, refer to page 40~41.4. Cut off the remaining foam insulation.5. If necessary, bend the pipe to fit along the bottom of the indoor unit.Then pull it out through the appropriate hole. The pipe should not project from the rear of the indoor unit. The bending radius should be 100 mm or more.6. Pass the pipe through the hole in the wall.7. For further details on how to connect to the outdoor unit and evacuate the air, refer to page 44~46.• Tighten the flare nut with torque wrench according to specified method.If the flare nut is over-tightened, the flare may break and cause refrigerant gas leakage.• DO NOT WALL UP THE PIPE CONNECTION !All refrigerant pipe connection must be easy accessible and serviceable.• The pipe will be insulated and fixed permanently into position after finishing the installation and the gas leak test;refer to page 47 for further details.English-39INSTALLATION05A3050 CB&XL&CH_IB&IM_DB68-04138A_HP&CO_EN.indd 39 2013-12-28 14:43:46