Daikin FXZQ05TAVJU Installation Manual

Also see for FXZQ05TAVJU: Operation manual

Contents

4English3 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 fl oat switch. (If the unit is tilted against thedirection of the condensate fl ow (the drain piping side is raised),the fl oat switch may malfunction and cause water to drip.)- Check if the unit is levelled at all four corners with a water level ora water-fi lled vinyl tube as shown in fi gure 11.1 Water level2 Vinyl tube5 Remove the paper pattern for installation. (For new ceilings only.)Refrigerant piping workFor refrigerant piping of outdoor unit, refer to the installation manualsupplied with the outdoor unit.Execute thermal insulation work completely on both sides of the gaspiping and liquid piping. Otherwise, this can sometimes result in waterleakage.Before rigging pipes, check which type of refrigerant is used.Installation shall be done by a licensed refrigerationtechnician, the choice of materials and installation shallcomply with the applicable national and international codes. Use a pipe cutter and fl are suitable for R410A refrigerant. To prevent dust, moisture or other foreign matter from infi ltrating thetube, either pinch the end, or cover it with tape. The outdoor unit is charged with refrigerant. To prevent water leakage, execute thermal insulation workcompletely on both sides of the gas and liquid piping. When using aheat pump, the temperature of the gas piping can reach up toapproximately 250°F (120°C), use insulation which is suffi cientlyheat resistant. Be sure to use both a spanner and torque wrench together whenconnecting or disconnecting pipes to/from the unit.1 2431 Torque wrench2 Spanner3 Piping union4 Flare nut Do not mix anything other than the specifi ed refrigerant, such as air,etc. inside the refrigerant circuit. Only use annealed material for fl are connections. Refer to Table 1 for the dimensions of fl are nut spaces and theappropriate tightening torque. (Overtightening may damage thefl are and cause leaks.)Table 1Pipe size Tightening torque Flare dimensionsA (in.) Flareφ1/4” 10.4-12.7 ft·lbf 0.342-0.358 R0.016 -0.031φ1/2” 36.5-44.5 ft·lbf 0.638-0.654• Refer to Table 1 to determine the proper tightening torque. When connecting the fl are nut, coat the fl are inner surface withether oil or ester oil and initially tighten 3 or 4 turns by hand beforetightening fi rmly. If the refrigerant gas leaks during the work, ventilate the area. Atoxic gas is emitted by the refrigerant gas being exposed to a fi re. Make sure there is no refrigerant gas leak. A toxic gas may bereleased by the refrigerant gas leaking indoor and being exposed tofl ames from an area heater, cooking stove, etc. Finally, insulate as shown in the fi gure below (use the suppliedaccessory parts).4 551 2 3 1 Liquid pipe2 Gas pipe3 Insulation for fi tting for liquidpipe4 Insulation for fi tting for gaspipe5 Clamps(use 2 clamps per insulation)Piping insulation procedureGas piping Liquid pipingA BDC71 23 4 56 6A BC1 23 4 56 6D71 Piping insulation material (fi eld supply)2 Flare nut connection3 Insulation for fi tting (delivered with the unit)4 Piping insulation material (main unit)5 Main unit6 Clamp (fi eld supply)7 Medium 1 sealing pad for gas piping (delivered with the unit)Medium 2 sealing pad for liquid piping (delivered with the unit)A Turn seams upB Attach to baseC Tighten the part other than the piping insulation materialD Wrap over from the base of the unit to the top of the fl are nutconnection For local insulation, be sure to insulate local piping all theway into the pipe connections inside the unit.Exposed piping may cause condensation or may causeburns when touched. Make sure that no oil remains on plastic parts of thedecoration panel (optional equipment).Oil may cause degradation and damage to plastic parts.