Daikin FHQ35CAVEB Installation Manual

Also see for FHQ100CAVEB: Service manual Service manual Operation manual Installation manual

Contents

Daikin FHQ35CAVEB Installation Manual Manual pdf 11 page image

English 106. REFRIGERANT PIPING WORK• For the outdoor unit refrigerant piping, refer to the installation manual attached to the outdoor unit.• Carry out insulation of both gas and liquid refrigerant piping securely. If not insulated, it may cause waterleakage. For gas piping, use insulation material of which heat resistant temperature is not less than 120°C.For use under high humidity, strengthen the insulation material for refrigerant piping. If not strengthened,the surface of insulation material may sweat.• Before installation work, make sure that the refrigerant is R410A. (Unless the refrigerant is R410A, the nor-mal operation cannot be expected.)CAUTIONThis air conditioner is a dedicated model for new refrigerant R410A. Make sure to meet the requirementsshown right and carry out installation work.• Use dedicated piping cutters and flaring tools for R410A.• When making a flare connection, coat the flared inner surface only with ether oil or ester oil.• Use only the flare nuts attached to the air conditioner. If other flare nuts are used, it may cause refrigerantleakage.• To prevent contamination or moisture from getting into the piping, take measures such as pinching or tap-ing the pipings.Do not mix substance other than the specified refrigerant such as air into the refrigeration circuit.If the refrigerant leaks during the work, ventilate the room.• Remove the stay for packing and delivering (reinforcing plate) before refrigerant piping work.(Refer to Fig. 18)• The refrigerant is pre-charged in the outdoor unit.• When connecting the pipings to the air conditioner, make sure to use a spanner and a torque wrench asshown in Fig.13.For the dimension of flared part, refer to the Table 1.• When making a flare connection, coat the flared inner surface only with ether oil or ester oil. (Refer to Fig. 14)Then, turn the flare nut 3 to 4 times with your hand and screw in the nut.Torque wrenchSpannerFlare nutUnion joint Fig. 13Coat the flared inner surfaceonly with ether oil or ester oil.Fig. 14