Daikin VRV Aurora RXLQ72TATJU Installation Manual

Also see for VRV Aurora RXLQ120TATJU: Service manual Service manual

21English• Outside the units, the transmission wiring must be finished simulta-neously with the local refrigerant piping, and wound with tape (fieldsupply) as shown in the figure below.1 2 34 5 1 Liquid pipe2 Gas pipe3 Transmission wiring4 Insulation material5 Finishing tape• For multi system:1 Transmission wiring between outdoor units in the same pipingsystem must be connected to terminals Q1 and Q2 (TO MULTIUNIT).Connecting the wires to the F1, F2 (TO OUT/D UNIT) terminalsresults in system malfunction.2 Wiring to other systems should be connected to terminals F1 andF2 (TO OUT/D UNIT) on the printed circuit board of the masterunit. The outdoor unit that connects transmission wiring to indoorunit is the master unit. The others are sub unit.9 5 Power wiring connection procedure• Be sure to connect the power supply wiring to the power supply ter-minal block and hold it in place using the included clamp as shownin the figure below.• The L1, L2 and L3 phases of the power wiring should be securedseparately to the hook using the included clamp (1).• The ground wiring should be bound to the power wiring using theincluded clamp (1) to prevent outside force from being applied to theterminal area.RXLQ72-120T type5789 142361 Power supply(MODEL TATJU : 3-208/230V 60 Hz)(MODEL TAYDU : 3-460V 60 Hz)(MODEL TAYCU : 3-575V 60 Hz)2 Branch switch, Overcurrent breaker3 Ground wire4 Control box5 Attach insulation sleeves6 Power supply terminal block7 Ground terminal8 Clamp (1) (accessory)9 Vinyl tube (accessory)CAUTION• Install the cover so that the sealing material does not get caught incontrol box. (See the figure below.)Failure to hold the power supply wiring in place using the includedclamp will make it possible for insects, rainwater, snow, and other ob-jects to enter the electrical wiring box, which may cause malfunctions.Control box coverIt causes dampair or water toenter.FrontsideTerminal blockfor power supplySealing materialSealing material• Be sure to use crimp-style terminal with insulating sleeves for con-nections. (See the figure below.)Crimp-style terminalInsulating sleevePower wire• For wiring, use the designated power wire and connect firmly, thensecure to prevent outside pressure being exerted on the terminalboard.• Use an appropriate screwdriver for tightening the terminal screws.A screwdriver with a small head will strip the head and make propertightening impossible.• Over-tightening the terminal screws may break them.See the following table for the tightening torque of the terminal screws.Screw size Tightening torqueM8 Power terminal 4.20-5.09 ft•lbf (5.7-6.9 N•m)M8 Ground terminal 7.15-8.63 ft•lbf (9.7-8.63 N•m)• When pulling the ground wire out, wire it so that it comes through thecut out section of the cup washer. (See the figure below.) An improperground connection may prevent a good ground from being achieved.Crimp-style terminalCut out sectionCup washer• When 2 wires are connected to a single terminal, connect them sothat the rear sides of the crimp contacts face each other. Also, makesure the thinner wire is on top, securing the 2 wires simultaneouslyto the resin hook using the included clamp (1).Crimp-styleterminal Wire : narrowTerminalblockWire : thickResin hook9 6 Procedure for Wiring Inside Units• Referring to the figure below, secure and wire the power and trans-mission wiring using the included clamp (1), (2) and (3).• Wire so that the ground wiring does not come into contact with thecompressor lead wiring.If they touch, this may have an adverse effect on other devices.• The transmission wiring must be at least 2 in. (51 mm) away fromthe power wiring.