Daikin RXYQ72TTJU Installation Manual

Also see for RXYQ120TTJU: Operation manual Engineering data

Contents

Daikin RXYQ72TTJU Installation Manual Manual pdf 25 page image

223P362438-1B E nglishRXYQ72TRXYQ96-168T568743 16873 2 1251 Power/ground wires.2 Clear over 2 in. (50 mm)3 Transmission wiring4 Clamp (1) (accessory)5 Clamp (2)(accessory)6 Power wiring7 Transmission wiring8 Ground wirePrecautions when knocking out knockout holes• To punch out a knockout hole, hit it with a hammer.• Open an appropriate hole as needed.• After knocking out the holes, trim off the burr, then we recommendyou to paint the edges and areas around the edges using the repairpaint to prevent rusting.• Power line: Open a knockout hole as shown at right and connect itusing a conduit.Choose an appropriate knockout hole for conduit size suitable forthe power and ground line to be used.• Transmission line: Connect it using a conduit in the knockout holeon the left.Knockout hole (Transmission line) f7/8 in. (22.2 mm)Knockout hole (Power line)Burrf7/8 in. (22.2 mm)f1-1/8 in. (27.8 mm)f1-3/8 in. (34.5 mm)NOTE• After wiring work is completed, check to make sure there are noloose connections among the electrical parts in the control box.10 Air tight test and vacuum drying• After finished piping work, carry out air tight test and vacuum drying.NOTE• Always use nitrogen gas for the air tightness test.• Absolutely do not open the stop valve until the main power circuitinsulation measurement has been completed. (Measuring after thestop valve is opened will cause the insulation value to drop.)Gauge manifoldCharge hosevalve• To prevent entry of any impurities and insuresufficient pressure resistance, always use thespecial tools dedicated for R410A.• Use charge hose that have pushing stick for con-necting to service port of stop valves or refriger-ant charge port.Vacuum pump • The vacuum pump for vacuum drying should beable to lower the pressure to 500 microns.• Take care the pump oil never flow backward intothe refrigerant pipe during the pump stops.• Referring to the figure below, connect a nitrogen tank, refrigeranttank, and a vacuum pump to the outdoor unit.The refrigerant tank and the charge hose connection to refrigerantcharge port or the valve A in the figure below are needed in14. Charging refrigerant on page 26.12 3456BC9810 10 101113121415A71 Pressure reducing valve2 Nitrogen3 Measuring instrument4 Refrigerant R410A tank (siphon system)5 Vacuum pump6 Charge hose7 Refrigerant charge port8 Gas line stop valve9 Liquid line stop valve10 Outdoor unit11 To indoor unit12 Stop valve13 Field piping14 Gas flow15 Stop valve service portA Valve AB Valve BC Valve CNOTE• The air-tightness test and vacuum drying should be done using theservice ports of equalizer pipe, gas pipe and liquid pipe stop valve.See the [R410A] Label attached to the front panel of the outdoorunit for details on the location of the service port (See the figurebelow).