Daikin FDA125A5VEB Installer And User Reference Manual

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Daikin FDA125A5VEB Installer And User Reference Manual Manual pdf 12 page image

6 InstallationInstaller and user reference guide12FDA125A5VEBSplit system air conditioners4P495031-1A – 2019.036.2.3 Guidelines when installing the ductingWARNINGIf one or more rooms are connected to the unit using aduct system, make sure:▪ there are no operating ignition sources (example: openflames, an operating gas appliance or an operatingelectric heater) in case the floor area is less than Aminspecified in the General safety precautions;▪ no auxiliary devices, which may be a potential ignitionsource, are installed in the duct work (example: hotsurfaces with a temperature exceeding 700°C andelectric switching device);▪ only auxiliary devices approved by the manufacturerare used in the duct work;▪ an air inlet or outlet is connected directly with a room byducting. Do NOT use spaces such as a false ceiling asa duct for the air inlet or outlet.WARNINGDo NOT install operating ignition sources (example: openflames, an operating gas appliance or an operating electricheater) in the duct work.The ducting is to be field supplied.▪ Air inlet side. Attach the duct and intake-side flange (fieldsupply). For connecting the flange, use 7 accessory screws.a b b aeed dca Connection screw (accessory)b Flange (field supply)c Main unitd Insulation (field supply)e Aluminium tape (field supply)▪ Filter. Be sure to attach an air filter inside the air passage on theintake side. Use an air filter with dust collecting efficiency ≥50%(gravimetric method). The included filter is not used when theintake duct is attached.▪ Air outlet side. Connect the duct according to the insidedimension of the outlet-side flange.▪ Air leaks. Wind aluminium tape around the intake side flange andduct connection. Make sure there are no air leaks at any otherconnection.▪ Insulation. Insulate the duct to prevent condensation fromforming. Use glass wool or polyethylene foam 25 mm thick.6.2.4 Guidelines when installing the drainpipingMake sure condensation water can be evacuated properly. Thisinvolves:▪ General guidelines▪ Connecting the drain piping to the indoor unit▪ Checking for water leaksGeneral guidelines▪ Drain pump. For this "high lift type", the drainage sounds will bereduced when the drain pump is installed in a higher location.Recommended height is 300 mm.▪ Pipe length. Keep drain piping as short as possible.▪ Pipe size. Keep the pipe size equal to or greater than that of theconnecting pipe (vinyl pipe of 25 mm nominal diameter and32 mm outer diameter).▪ Slope. Make sure the drain piping slopes down (at least 1/100) toprevent air from being trapped in the piping. Use hanging bars asshown.1~1.5 maa Hanging barO AllowedX Not allowed▪ Condensation. Take measures against condensation. Insulatethe complete drain piping in the building.▪ Rising piping. If necessary to make the slope possible, you caninstall rising piping.▪ Drain hose inclination: 0~75 mm to avoid stress on the pipingand to avoid air bubbles.▪ Rising piping: ≤300 mm from the unit, ≤625 mm perpendicularto the unit.≤625≤3000~751000~1500(mm)baba ddca Metal clamp (accessory)b Drain hose (accessory)c Rising drain piping (vinyl pipe of 25 mm nominal diameterand 32 mm outer diameter) (field supply)d Hanging bars (field supply)▪ Combining drain pipes. You can combine drain pipes. Makesure to use drain pipes and T-joints with the correct gauge for theoperating capacity of the units.≥100≤625(mm)aa T-jointTo connect the drain piping to the indoor unitNOTICEIncorrect connection of the drain hose might cause leaks,and damage the installation space and surroundings.1 Push the drain hose as far as possible over the drain pipeconnection.2 Tighten the metal clamp until the screw head is less than 4 mmfrom the metal clamp part.3 Check for water leaks (see "To check for water leaks" onpage 13).4 Install the insulation piece (drain pipe).