Daikin FXHQ-M Engineeiring Data

Daikin FXHQ-M Engineeiring Data Manual pdf 26 page image

EDUS39-600-F5 InstallationFXHQ-M 25• When doing this, block any gaps between the pipe penetra-tion lid and the pipes by using putty to prevent dust fromentering the indoor unit.7. DRAIN PIPING WORK(1) Carry out the drain piping.• Make sure piping provides proper drainage.• You can select whether to bring the drain piping out fromthe rear right or right. For rear right-facing and right-facingsituations, refer to Section6. REFRIGERANT PIPINGWORK on Page 188.• Make sure the pipe diameter is the same or bigger than thebranch pipingusing vinyl-chloride piping, nominal diameter1 in., external diameter 1 1/4 in.• Make sure the piping is short, has at least a 1/100 slope,and can prevent air pockets from forming. (Refer to Fig.21)• Do not allow any slack to gather in the drain pipe inside theindoor unit as slack in the drain pipe can cause the suctiongrille to break.)CAUTION• Water accumulating in the drain piping can cause the drainto clog.• Be sure to use the drain pipe (1) and metal clamp (2).Insert the drain pipe completely into the drain socket, andsecurely attach the metal clamp bracket inside the gray tapearea on the inserted tip of the drain pipe. (Refer to Fig. 22)Screw the screws on the metal clamp bracket until there is5/32 in. left. Pay attention to the direction of the attachmentto prevent the metal clamp bracket from coming into con-tact with the suction grille. (Refer to Fig. 23)• Insulate the metal clamp bracket and drain pipe from thebottom using the large sealing pad (8). (Refer to Fig. 23)• Be sure to insulate all drain piping running indoors.NOTE• To ensure no excessive pressure is applied to the drainpipe (1), do not bend or twist when installing or leakage canoccur.• If converging multiple drain pipes, install according to theprocedure shown below.Select converging drain pipes with gauges suitable for theunit’s operating capacity.Tilt downDo not lift Make sure thereis no slackMake sure it isnot in the waterGoodWrongFig. 21Taping area (Gray) Drain pipe (1)Metal clamp (2)Fig. 22Large sealing pad (8)Metal clamp (2)< Facing rear right or right >5/32 or lessFig. 23 (Length : in.)3 7/8 or moreT-joint converging drain pipesSlope downwards at a gradientof at least 1/100 (Length : in.)WrongFig. 24