Daikin J-Series Engineeiring Data

Also see for FTKS09JEVJU: Service manual Installation manual Operation manual

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Daikin J-Series Engineeiring Data Manual pdf 42 page image

EDUS041011 Installation ManualRoom Air Conditioners J-Series 416Outdoor Unit Installation3. Flaring the pipe end1) Cut the pipe end with a pipe cutter.2) Remove burrs with the cut surface facingdownward so that the chips do not enter the pipe.3) Put the flare nut on the pipe.4) Flare the pipe.5) Check that the flaring is properly made.WARNING• Do not use mineral oil on flared part.• Prevent mineral oil from getting into the system as this would reduce the lifetime of the units.• Never use piping which has been used for previous installations. Only use parts which are delivered with the unit.• Never install a drier to this R410A unit in order to guarantee its lifetime.• The drying material may dissolve and damage the system.• Incomplete flaring may cause refrigerant gas leakage.4. Refrigerant pipingCAUTION• Use the flare nut fixed to the main unit. (To prevent cracking of the flare nut by aged deterioration.)• To prevent gas leakage, apply refrigeration oil only to the inner surface of the flare. (Use refrigeration oil for R410A.)• Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage.Align the centers of both flares and tighten the flare nuts 3 or 4 turns by hand. Then tighten them fully with the torque wrenches.ACheckFlare’s innersurface mustbe flaw-free.The pipe end mustbe evenly flared ina perfect circle.Make sure that theflare nut is fitted.(Cut exactly atright angles.) Remove burrs.FlaringSet exactly at the position shown below.A 0-0.020 inch(0-0.5mm)Clutch-typeFlare tool for R410A0.039-0.059 inch(1.0-1.5mm)Clutch-type (Rigid-type)0.059-0.079 inch(1.5-2.0mm)Wing-nut type (Imperial-type)Conventional flare toolDieFlare nut tightening torqueGas side Liquid side3/8 inch (9.5mm) 1/4 inch (6.4mm)24.1-29.4ft lbf 10.4-12.7ft lbf(32.7-39.9N m) (14.2-17.2N m)Valve cap tightening torqueGas side Liquid side3/8 inch (9.5mm) 1/4 inch (6.4mm)15.9-20.2ft lbf 15.9-20.2ft lbf(21.6-27.4N m) (21.6-27.4N m)Service port cap 7.9-10.8ft lbftightening torque (10.8-14.7N m)Torque wrenchPiping unionFlare nutSpanner[Tighten]Do not apply refrigerationoil to the outer surface.Flare nutApply refrigeration oil tothe inner surface of theflare.Do not apply refrigerationoil to the flare nut avoidtightening with over torque.[Apply oil]•• •• •• ••••