Daikin RXYQ72TTJU Installation Manual

Also see for RXYQ120TTJU: Operation manual Engineering data

Contents

Daikin RXYQ72TTJU Installation Manual Manual pdf 23 page image

203P362438-1B E nglishRXYQ72T123RXYQ96-168T 1231 Control box cover2 Inspection door3 [Service precautions] Label locationNOTE• Open the knock holes with a hammer or similar tool.• After knocking out the holes, we recommend you remove any burrsand paint the holes with repair paint to prevent rusting.(Refer to the above figures)• When passing wiring through the knock holes, remove burrs aroundthe knock holes and protect the wiring with protective tape.(Refer to the above figures)• If small animals might enter the unit, block off any gaps (hatchingparts in the above figures) with material (field supply).9 4 Transmission wiring connection procedure• Referring to the figure below, connect the transmission wiring be-tween outdoor unit and indoor unit, outdoor unit and outdoor unit ofother system, outdoor unit and outdoor unit of same system.651 129TO IN/D UNITF1 F2TO OUT/ D UNITF1 F2TO MULTI UNITQ1 Q2A1P TO MULTI UNITQ1 Q22143A1P651 2 : 1011F1 F2 F1 F2 F1 F27 781 Master unit (*)2 Sub unit (*)3 Outdoor unit A4 Outdoor unit B5 Control box6 (Only RXYQ – TYDN) Control box (2)7 (Only RXYQ – TYDN)Do not open the control box (2) cover.(There is no work when installation.)8 Never connect the power wire.9 To outdoor unit of other system10 Use duplex wires (No polarity)11 Indoor unit(*) : The Outdoor unit that connects the transmission wiring toan indoor unit is Master unit of the multi system.The other units are Sub units. (In this figure, Outdoor unit Ais the Master unit.)Check installation work to ensure proper operation. Onsitesettings can be accomplished by operating the printedcircuit board (A1P) of Master unit.NOTE• Do not connect the power wiring to terminals for the transmissionwiring. Doing so would destroy the entire system.• When connecting wires to the terminal block on the printed circuitboard, too much heat or tightening could damage the printed circuitboard. Attach with care.See the table below for the tightening torque of the transmissionwiring terminals.Screw size Tightening torqueM3.5 (A1P) 0.59-0.71 ft•lbf (0.8-0.97 N•m)• Transmission wiring (About the symbol [1]-[2], see the foregoingfigure) should be done within the following limitations.If they are exceeded, transmission problems may occur.[1] Between outdoor unit and indoor unitBetween outdoor unit and outdoor unit of other systemsMax. wiring length : 3280 ft. (1000 m)Max. total wiring length : 6560 ft. (2000 m)Max. no. of branches : 16[Note]No branch is allowed after a branch. See the follow-ing figure.Max. no. of outdoor units of other system that can be con-nected : 101 2F1 F2 F1 F2F1 F2 F1 F2F1 F21 Branch2 Branch after branch[2] Between outdoor unit and outdoor unit of same systemMax. wiring length : 100 ft. (30 m)• The transmission wiring inside the control box should be securedusing the clamp (1) as shown in the figure below.RXYQ72T1 (A1P)X1M221 (A1P)X1MRXYQ96-168T1 In the control box2 Clamp (1) (accessory)