Daikin FXHQ12MVJU Installation Manual

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Contents

Daikin FXHQ12MVJU Installation Manual Manual pdf 9 page image

9• When piping is complete, cut the removed penetration lid intothe shape of the pipe using scissors and attach.As when before removing the top penetration lid, secure thelead lines for the swing motor and thermistor by passing themthrough the clamp section on the top penetration lid.(Refer to Fig. 18, 20)• When doing this, block any gaps between the pipe penetra-tion lid and the pipes using putty to prevent dust from enter-ing 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 from therear right or right. For rear right-facing and right-facing situa-tions, refer to “6. REFRIGERANT PIPING WORK” on page 7.• Make sure the pipe diameter is the same or bigger than thebranch piping. (vinyl-chloride piping, nominal diameter 1 in.,external diameter 1 1/4 in.)• Make sure the piping is short, has at least a 1/100 slope, andcan prevent air pockets from forming. (Refer to Fig. 21)• Do not allow any slack to gather in the drain pipe inside theindoor unit.(Slack in the drain pipe can cause the suction grille to break.)CAUTION• Water accumulating in the drain piping can cause the drain toclog.• Be sure to use the drain pipe (1) and metal clamp (2).Also, 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 is 5/32 in. left. (Pay attention to the direction of the attachment toprevent the metal clamp bracket from coming into contactwith the suction grille.) (Refer to Fig. 23)• Insulate the metal clamp bracket and drain pipe from the bot-tom 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 drain pipe(1), do not bend or twist when installing. (This may causeleakage.)• If converging multiple drain pipes, install according to the pro-cedure shown below.Select converging drain pipes whose gauge is suitable for theoperating capacity of the unit.Top plateTop penetration lidCut outFig. 18 (A figure from an inside bottom)This hole not using it.Fig. 19Upward-facingrefrigerant pipeL-shaped branch pipekit (Optional accessories)Top penetrationlid clamp sectionThermistor lead lineSwing motorlead lineFig. 20 (A figure from an inside bottom)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.)