Daikin FAA71AUVEB Installation Manual

Also see for FAA100AUVEB: Operation manual Technical data

Contents

English 11CAUTIONThis product is a dedicated model for refrigerant R410A or R32. At installation, make sure toobserve the following precaution.• For flare connection, use dedicated pipe cutter and flaring tools according to the refrigerantused.• Apply ester oil or ether oil to the inside of the flare section before connecting.• Use the flare nuts provided with the unit. Do not use a class 1 flare nut.Otherwise the refrigerant may leak.• To prevent dust, moisture or other foreign matters from getting into the tube, either pinch thetube end or cover the end with tape.• Do not allow anything other than the designated refrigerant to get mixed into the refrigerantcircuit, such as air, etc. If any refrigerant gas leaks while working on the unit, ventilate the roomthoroughly right away.• The outdoor unit is charged with refrigerant.• Be sure to use both a spanner and a torque wrench together as shownin the drawing, when connecting or disconnecting pipes to/from theunit. (Refer to Fig. 14)• Refer to “Table 2” for the dimensions for flaring.• When connecting the flare nut, apply ester oil or ether oil to the insideof flared section, and turn the nut spin 3-4 times by hand before screw-ing in. (Refer to Fig. 15)CAUTION• Be careful not to damage the flare section.• Over tightening may damage the flare and cause a refrigerantleakage.Table 2• Refer to “Table 2” to determine the proper tightening torque.CAUTIONBe sure to insulate any field piping all the way to the piping connection inside the unit.Any exposed piping may cause condensation or burns if touched.Pipe size (mm) Tightening torque (N·m) Flare dimensions A (mm) Flareφ 9.5 (3/8”) 32.7-39.9 12.8 – 13.2φ15.9 (5/8”) 61.8-75.4 19.3 – 19.7Torque wrenchSpannerPiping unionFlare nutFig. 14Fig. 15Apply ester or ether oilto this face.R0.4-0.8A90 0 ±2 0450±20