Daikin FXDQ15A2VEB Installation Manual

Also see for FXDQ15A2VEB: Operation manual Installation manual

Contents

English 77. DRAIN PIPING WORKCAUTION• Make sure all water is out before making the duct connection.(1) Install the drain piping.• Make sure the drain works properly.• The diameter of the drain piping should be greater than orequal to the diameter of the connecting pipe (vinyl tube; pipesize: 20 mm; outer dimension: 26 mm).(not including the riser)• Keep the drain piping short and sloping downwards at a gra-dient of at least 1/100 to prevent air pockets from forming.(Refer to Fig. 10)CAUTIONWater accumulating in the drain piping can cause thedrain to clog.• To keep the drain piping from sagging, space hangingbracket every 1 to 1.5 m.• Use the drain hose (2) and the metal clamp (1). Insert thedrain hose (2) fully into the drain socket and firmly tighten themetal clamp (1) with the upper part of the tape on the hoseend. Tighten the metal clamp (1) until the screw head is lessthan 4 mm from the hose. (Refer to Fig. 11, 12)• The two areas below should be insulated because conden-sation may form there causing water to leak.• Drain piping passing indoors• Drain socketReferring the figure below, insulate the metal clamp (1) anddrain hose (2) using the included large sealing pad (5).(Refer to Fig. 12) PRECAUTIONS FOR DRAIN RAISING PIPE • Make sure the drain raising pipe height is no higher than600mm.• Place the drain raising pipe vertically and make sure it is nofurther than 300mm from the unit. (Refer to Fig. 13) PRECAUTIONS Drain piping connections• Do not connect the drain piping directly to sewage pipes thatsmell of ammonia. The ammonia in the sewage might enterthe indoor unit through the drain piping and corrode the heatexchanger.• Do not twist or bend the drain hose (2), so that excessiveforce is not applied to it.(This type of treatment may cause leaking.)• If you are using central drain piping, follow the procedureoutlined in the figure 10.• Select central drain piping of proper size according to thecapacity of the connected unit.(2) After piping work is finished, check drainage flowssmoothly, with manner described below.CAUTION• The electric wiring work shall be performed by qualified elec-tricians.• If workers not having the electrician qualification have per-formed the electric wiring work, the steps 3 to 7 shall be per-formed after the TEST RUN.(with rubber cap)Service drain holeRefrigerant pipesDrain socketCentral drain piping(with a slope of at least 1/100)600mmor lessFig. 10(accessory)(accessory)Metal clamp (1)Large sealingpad (5)≤4mm(accessory)(accessory)Fig. 12Fig. 11Tape Drain hose (2)Metal clamp (1)Locate the drain hose horizontallyor with a little upward gradient.If there is an air bank, noise may be generatedas a result of a water backflow when the drainpump comes to a stop.Horizontal orupward slopeDrain hose (2) (accessory)Fig. 131 – 1.5m(Field supply)(600mm or less)Adjustable rangeHanging bracket300 mm or lessCeiling slabDrain hose (2) (accessory)Metal clamp (1) (accessory)Drain raising pipe