Daikin LREQ5B7Y1 Installation Manual

Also see for LREQ10B7Y1: Installation manual Operation manual

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Daikin LREQ5B7Y1 Installation Manual Manual pdf 18 page image

Installation manual15 LREQ5~20B7Y1Air cooled refrigeration condensing unit4PW74302-1 – 2012.06• Liquid pipe arrival minimum temperature 0°CGas pipe arrival minimum temperature –45°C• Reinforce the insulation material for the refrigerant pipingaccording to the environment of thermal installation. Otherwise, thesurface of the insulation material may result in dew condensation.• If the dew condensation water on the shutoff valves is likely to flowto the indoor unit side through the clearance between the insulationmaterial and piping because the outdoor unit is installed above theindoor unit or for some other reasons, perform appropriatetreatment such as the caulking of the joints (see the illustrationsbelow).• Attach the cover of the piping outlet with a knock hole opened. Ifthere is a feature of small animals intruding through the pipingoutlet, cover the piping outlet with a blocking material (field supply)on completion of the steps of "10. REFRIGERANTREPLENISHMENT" on page 15 (see the illustrations below).Use the piping outlet for jobs required during the steps of"10. REFRIGERANT REPLENISHMENT" on page 15 (e.g., a jobof taking in the charge hose).Note• After knocking out the holes, we recommend you remove burrs inthe knock holes and paint the edges and areas around the edgesusing the repair paint.8-3 Checking of device and installation conditionsBe sure to check the followings.For those doing electrical workSee "7-2 Procedure for incoming wiring" on page 11.1. Make sure there is no faulty power wiring or loosing of a nut.See "7-3 Procedure for power supply wiring" on page 12.2. Has the insulation of the main power circuit deteriorated?Measure the insulation and check the insulation is above regularvalue in accordance with relevant local and national regulations.For those doing pipe work1. Make sure piping size is correct.See "6-1 Selection of piping material" on page 6.2. Make sure insulation work is done.See "8-2 Thermal insulation work" on page 14.3. Make sure there is no faulty refrigerant piping.See "6. REFRIGERANT PIPING" on page 5.9. CHECKS AFTER WORK COMPLETION• Make sure the following works are complete in accordance with theinstallation manual. Piping work Wiring work Air tight test/vacuum drying Installation work for indoor unit10. REFRIGERANT REPLENISHMENTFor refrigerant filling contractorUse R410A for refrigerant replenishment.The R410A refrigerant cylinder is painted with a pink belt.Warning Electric Shock Warning• Securely close the control box lid before turning power on.• Before turning power on, check through the inspection hole (on theleft-hand side) of the control box lid that the operation switch is setto OFF.If the operation switch is set to ON, the fan may rotate.• Check the LED indicators on the PCB (A1P) of the outdoor unitthrough the inspection hole (on the right-hand side) of the controlbox lid after the outdoor unit is turned on (see the illustration).(The compressor will not operate for approximately 2 minutes afterthe outdoor unit is turned on.H2P blinks for the first five seconds when the power supply isturned on. If the equipment is normal, H2P will be turned off in fiveseconds. H2P lights for abnormality.)Liquid sideshutoff valveGas sideshutoff valveIndoor/Outdoorinterunit pipingInsulation materialCoking, etc.Piping lead-outhole lidGas side pipingLiquid side pipingOpen a knockhole atBlockInspection hole(left-hand side) Inspection hole(right-hand side)Control boxInspection hole (left-hand side)(upper left-hand side of control box)Inspection hole (right-hand side)(upper right-hand side of control box)Control box lidLED(H1P~8P)Lift up this tab andopen the cover.Inspectionhole coverREMOTE OFF ONOperation switch(factory set: OFF)( )Setting of spare partsFor details please refer to theINSTRUCTION FOR REPAIRWITH SPARE PARTSOFFONONOFFThe evaporationtemperature settingSetting by dip switchesIt is not used1 3DS123 412 4DS2