34Cutting or extending the pipeOuter 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 990~1210Indoor outlet pipe Connecting pipeFlare nutWallIndoor unitDrain hoseThe drain hose must NOTslant upwards.The end of the drain hose must NOTbe placed under water.The drain hose must notbe bent.Keep a clearance of at least5cm between the end of thedrain hose and the ground.5cmlessDo not place the end of thedrain hose in a hollow.Ditch5. Check if you flared the pipe correctly (see examples of incorrectly flared pipes below).6. Align the pipes to connect them easily. Tighten the flare nuts first with your hands, and then with a torque wrench,applying the following torque.7. For further details on how to connect to the outdoor unit and purge the air, refer to page 36~38.Correct UnevenThicknessCrackedDamagedSurfaceInclined• Excessive torque can be cause of gas leakage. In case brazing the pipe, the nitrogen gas must be blown into thepipe (50 Pa). The joint must be accessible and serviceable.• 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.Installing and connecting the drain hose of the indoor unitWhen installing the drain hose for the indoor unit, check if condensation draining is adequate.When passing the drain hose through the 65-mm hole drilled in the wall, check the followings:AQV09K&Y@@_Jungfrau_IBIM_E_32448A.indd 34 2011-3-19 15:45:48