Daikin RZR36PVJU Installation Manual

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Contents

Daikin RZR36PVJU Installation Manual Manual pdf 11 page image

English 10• If the outdoor unit is not in operation and the total amount cannot becharged, follow the procedures for additional refrigerant chargeshown below.• Make sure to use installation tools you exclusively use on R410Ainstallations to withstand the pressure and to prevent foreign materi-als from mixing into the system.• Procedures for charging additional refrigerant.See the “Cautions on service” label on the back of the front panel for thesettings for operation after replenishing refrigerant.1. Open the gas line stop valve (leaving the liquid line stop valve, valveA in the diagram above, close) and perform the operation to add therefrigerant.2. Once the appropriate amount of refrigerant is in, press the confirma-tion button (BS3) on the outdoor unit PC board (A1P), and stop oper-ation.3. Open the stop valves quickly (both liquid and gas line valves).(This must be done quickly to avoid the possibility that the pipe mightburst.)• The figure below shows the name of each part required in handling thestop valve. At the time of shipment, the stop valve is closed.• If only a torque wrench is used to loosen or tighten the flare nut, theside plate may be distorted. Make sure to fix the stop valve with aspanner, then loosen or tighten the flare nut with a torque wrench.• When it is expected that the operating pressure will be low (for exam-ple, when cooling will be performed while the outside air temperatureis low), seal sufficiently the flare nut in the stop valve on the gas linewith silicon sealant to prevent freezing.[Stop valve operation method]Prepare hexagon wrenches (whose size is 4 mm and 6 mm).How to open the stop valve1. Insert a hexagon wrench into the valve stem, and turn the valvestem counterclockwise.2. When the valve stem cannot be turned any more, stop turning.Now, the valve is open.How to close the stop valve1. Insert a hexagon wrench into the valve stem, and turn the valvestem clockwise.2. When the valve stem cannot be turned any more, stop turning.Now, the valve is closed.• The valve is sealed in the arrow area. Take care not to damage thearrow area.• After handling the valve, make sure to tighten the valve cap securely.• Use charge hose equipped with push in the work.• After the work, make sure to tighten the valve cap securely.Tightening torque.....8.5~10.3 ft·lbf7. ELECTRIC WIRING WORKDANGER• Do not ground units to water pipes, telephone wires or lightning rodsbecause incomplete grounding could cause a severe shock hazardresulting in severe injury or death, and to gas pipes because a gas leakcould result in an explosion which could lead to severe injury or death.WARNING• Disconnect all power to unit to avoid possible electric shockduring installation.• Use only specified wire and connect wires to terminals tightly. Becareful that wires do not place external stress on terminals. Keepwires in neat order so as to not to obstruct other equipment. Incom-plete connections could result in overheating, and in worse cases,electric shock or fire.For the details, refer to “7-3 Power supply wiring connection pro-cedure”.Stop valve operation methodCautions on handling the stop valveNitrogenDotted linesrepresentfield pipingCylinderStop valve service portVacuum pumpWeighingscale Charge hoseR410APressurereducingvalve Outdoor unitIndoor unitLiquid line Gas line(Siphon system) Valve AValve capService portField pipingconnection partValve stem Silicon sealant(Take care not to generate cavity.)Stop valve of twohangs structure Stop valve of onehang structureTorquewrenchTorquewrenchSpannerSpanner prohibitionto valve cap andbody partCautions on handling the valve capLiquid line Gas line10.0~12.2 ft·lbf 16.6~20.3 ft·lbfCautions on handling the service port Opening direction Opening directionValve capStop valve(valve cap attachment area)