Daikin REYQ72TTJU Installation Manual

Daikin REYQ72TTJU Installation Manual Manual pdf 24 page image

213P362438-3H E nglish• 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.4153 4 6421 Suction gas pipe2 High/Low pressure gas pipe3 Liquid pipe4 Insulation material5 Finishing tape6 Transmission wiring• 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.REYQ72T1781011 945623REYQ96-168T791011 14652381 Power supply(MODEL TYDN: 3 – 460 V 60 Hz)(MODEL TTJU: 3 – 208/230 V 60 Hz)2 Branch switch, Overcurrent breaker3 Ground wire4 Control box5 (Only REYQ – TYDN)Control box (2)6 (Only REYQ – TYDN)Do not open the control box (2) cover.(There are no work when installation.)7 Attach insulation sleeves8 Power supply terminal block9 Ground terminal10 Clamp (1) (accessory)11 Vinyl tube (accessory)CAUTION• 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 terminalscrews.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 throughthe cut out section of the cup washer. (See the figure below.) Animproper ground connection may prevent a good ground from beingachieved.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 hook