Daikin FXAQ15AUV1B Installation Manual

Also see for FXAQ15AUV1B: Operation manual

Contents

12 English• Nitrogen should be set to 0.02 MPa with a pressure-reducing valve if brazing while inserting nitrogen intothe piping. (Refer to Fig.14)CAUTIONBe sure to insulate any field piping all the way to the piping connection inside the unit. Any exposed pipingmay cause condensation or burns if touched.• After checking for gas leaks, be sure to insulate the pipe connections using the supplementary pipinginsulation tubing and insulating tape (4). The insulating tape (4) should be wrapped from the L-shaped bendall the way to the end inside the unit. (Refer to Fig. 15)CAUTIONBe sure to insulate any field piping all the way to the piping connection inside the unit. Any exposed pipingmay cause condensation or burns if touched.6. DRAIN PIPING WORK(1) Install the drain piping. (Refer to Fig. 16)• The drain pipe should be short with a downward slope and should prevent air pockets from forming.• Watch out for the points in the Fig. 16 when performing drain work.Refrigerant pipingPart to bebrazedTapingPressure-reducing valvehands valveNitrogen Fig. 14NitrogenInsulating tubing tape Insulating tubing tapeLocal pipingIndoor unit pipingIndoor unit piping insulation tubingClamping material large(accessory) (5)Insulating tape (accessory) (4)L-shapedbendStart wrappingSee “4.INDOOR UNITINSTALLATION”Indoor unit piping insulation tubingInsulating tubing tapeInsulation tubing seamAttach the insulation tubingtape so that there are no gapsin the insulation tubing seam.Fig. 15Fig. 16Make sure the drainhose is at a downwardslope.Make sure the tip doesnot go underwater evenwhen water is added.Drain hose Drain hose(Downwardslope)