Installation manual3 FFQ25~60C2VEBSplit System air conditioners4P341094-1B – 2013.04Preparations before installation1 Relation of ceiling opening to unit and suspension bolt position.In case of decoration panelBYFQ60C: See figure 3.1BYFQ60B: See figure 3.2 Install the inspection opening on the control box side wheremaintenance and inspection of the control box and drain pumpare easy.In case of decoration panel BYFQ60B2 Make the ceiling opening needed for installation whereapplicable. (For existing ceilings.)- Refer to the paper pattern for installation for the ceilingopening dimensions.- Create the ceiling opening required for installation. From theside of the opening to the casing outlet or inspection opening,implement the refrigerant and drain piping and wiring forremote controller (unnecessary for wireless type). Refer toeach piping or wiring section.- After making an opening in the ceiling, it may be necessary toreinforce ceiling beams to keep the ceiling level and toprevent it from vibrating. Consult the builder for details.3 Install the suspension bolts. (Use either a M8~M10 size bolt.)Use anchors for existing ceilings, and a sunken insert, sunkenanchors or other field supplied parts for new ceilings to reinforcethe ceiling in order to bear the weight of the unit. Adjustclearance from the ceiling before proceeding further.Installation example (See figure 4)Indoor unit installationWhen installing optional accessories (except for the decorationpanel), read also the installation manual of the optional accessories.Depending on the field conditions, it may be easier to install optionalaccessories before the indoor unit is installed. However, for existingceilings, always install fresh air intake kit before installing the unit.1 Install the unit in the ceiling opening.- Attach the hanger bracket to the suspension bolt. Be sure tofix it securely by using a nut and washer from the upper andlower sides of the hanger bracket.- Securing the hanger bracket (See figure 5)2 Fix the paper pattern for installation. (For new ceilings only.)- The paper pattern for installation corresponds with themeasurements of the ceiling opening. Consult the builder fordetails.- The centre of the ceiling opening is indicated on the paperpattern for installation. The centre of the unit is indicated onthe unit casing.- After removing the packaging material from the paper patternfor installation, attach the paper pattern for installation to theunit with the attached screws as shown in figure 7.3 Adjust the unit to the right position for installation.(See "Preparations before installation" on page 3.)4 Check if the unit is horizontally levelled.- Do not install the unit tilted. The indoor unit is equipped with abuilt-in drain pump and float switch. (If the unit is tiltedagainst the direction of the condensate flow (the drain pipingside is raised), the float switch may malfunction and causewater to drip.)- Check if the unit is levelled at all four corners with a waterlevel or a water-filled vinyl tube as shown in figure 11.5 Remove the paper pattern for installation. (For new ceilingsonly.)1 Decoration panel dimensions2 Ceiling opening dimensions3 Indoor unit dimensions4 Suspension bolt pitch dimensions5 Refrigerant piping6 Suspension bolt (x4)7 False ceiling8 Hanger bracket1 Inspection openingNOTE Installation is possible with a ceiling dimension of660 mm (marked with*). However, to achieve a ceiling-panel overlapping dimension of 20 mm, the spacingbetween the ceiling and the unit should be 45 mm orless. If the spacing between ceiling and the unit is over45 mm, attach ceiling material to the part or recoverthe ceiling.1 Ceiling slab2 Anchor3 Long nut or turn-buckle4 Suspension bolt5 False ceilingNOTE All the above parts are field supplied. For other installation than standard installation,contact your dealer for details.1(300)450×4501 Nut (field supply)2 Washer (supplied with the unit)3 Hanger bracket4 Double nut (field supply, tighten)1 Paper pattern for installation2 Centre of the ceiling opening3 Centre of the unit4 Screws (supplied with the unit)1 Water level2 Vinyl tube