Samsung AQV K Series Manual

36Installing and connecting the drain hose of the outdoor unitWhile heating, ice may accumulate. During the process of defrosting, check if condensation draining is adequate. For adequatedraining, do the following.The outdoor unit is loaded with sufficient R410A refrigerant. Do not vent R410A into atmosphere: it is a fluorinatedgreenhouse gas, covered by Kyoto Protocol, with a Global Warming Potential (GWP) = 1975.You should purge the air in the indoor unit and in the pipe. If air remains in the refrigerant pipes, it affects the compressor.It may cause reduction of cooling capacity and malfunction. Refrigerant for air purging is not charged in the outdoor unit.Use Vacuum Pump as seen in the picture.1. Insert the drain plug into the drain hole on the underside of the outdoor unit.1. Connect each assembly pipe to the appropriate valve on the outdoor unit andtighten the flare nut.2. Tighten the flare nut first with your hands, and then with a torque wrench,applying the following torque.2. Connect a drain hose to the drain plug.3. Ensure that condensation draining is adequate.FrameGroundEstimatedsnow fallSnow-proof hoodBottom surface of outdoor unitDrain hoseDrain holeDrain plugDrain hole Drain plug• To avoid drain plug from contacting the ground, secure gap between theground and the bottom surface of the outdoor unit.• In areas with heavy snow fall, piled snow could block the air intake.To avoid this incident, install a frame that is higher than estimated snowfall. In addition, install a snow-proof hood to avoid snow from piling on theoutdoor unit.• When installing, make sure there is no leakage. When recovering the refrigerant, ground the compressor firstbefore removing the connection pipe. If the refrigerant pipe is not properly connected and the compressor workswith the service valve open, the pipe inhales the air and it makes the pressure inside of the refrigerant cycleabnormally high. It may cause explosion and injury.Purging the connected pipesOutdoor unit Indoor unitGas pipe sideLiquid pipe sideOuter Diameter Torque (kgf•cm)ø6.35 mm 140~170ø9.52 mm 250~280ø12.70 mm 380~420ø15.88 mm 440~480ø19.05 mm 990~1210ø22.23 mm 990~1210• Excessive torque can be cause of gas leakage.• Make the electrical connection and leave the system into “stand bymode”. Do not turn on the system!This is necessary for better vacuum operation (full OPEN position ofElectronic Expansion Valve - EEV -).If using a multi system, refer to the manual supplied with the outdoor unit.AQV09K&Y@@_Jungfrau_IBIM_E_32448A.indd 36 2011-3-19 15:45:54