Daikin FTXN09KEVJU Operation Manual

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Daikin FTXN09KEVJU Operation Manual Manual pdf 54 page image

EDUS041111_a Installation ManualRoom Air Conditioners K-Series 53116. Drain piping1) Connect the drain hose, as described right.2) Remove the air filters and pour some water into the drain pan to check the waterflows smoothly.3) If drain hose extension or embedded drain piping is required, use appropriate parts that match the hose front end.[Figure of hose front end]4) When extending the drain hose, use a commercially availableextension hose with an inner diameter of 5/8 inch (16mm).Be sure to thermally insulate the indoor section of the extensionhose.5) When connecting a rigid polyvinyl chloride pipe(nominal diameter 1/2 inch (13mm)) directly tothe drain hose attached to the indoor unit aswith embedded piping work, use anycommercially available drain socket (nominaldiameter 1/2 inch (13mm)) as a joint.Refrigerant Piping Work1. Flaring the pipe end1) Cut the pipe end with a pipe cutter.2) Remove burrs with the cut surface facing downwardso 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.The drain hose shouldbe inclined downward.No trap is permitted.Do not put the endof the hose in water.φ11/16” (φ18mm)φ5/8” (φ16mm)φ5/8”(φ16mm)The drain hose providedto indoor unit.Indoor unitdrain hoseφ5/8”(φ16mm)Extension drain hoseHeat insulation tube(field supply)Commercially available drain socket(nominal diameter 1/2 inch (13mm))Commercially available rigidpolyvinyl chloride pipe(nominal diameter 1/2 inch(13mm))The drain hose providedto indoor unit.φ18Set exactly at the position shown below.AFlaringDie 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 tool(Cut exactly atright angles.) Remove burrs.CheckFlare’s inner surfacemust be flaw-free.The pipe end mustbe evenly flared in aperfect circle.Make sure that theflare nut is fitted.