Daikin Enfinity CCW Installation And Maintenance Manual

Daikin Enfinity CCW Installation And Maintenance Manual Manual pdf 42 page image

IM 1049-9 42 www.DaikinApplied.comtyPiCal refrigeration CyClesFigure 58: Cooling Mode – (Single Circuit Only Shown)Return AirReversing ValveConditioned Air – (Cooling)ThermalExpansion Valve Co-Axial HeatExchangerBlowerCoil – Air to RefrigerantHeat ExchangerWater InWater OutSensing Bulb andCapillary TubeCompressorCooling Refrigeration CycleWhen the wall thermostat is calling for COOLING, the reversing valve directs the flow of the refrigerant, a hot gas,leaving the compressor to the water-to-refrigerant heat exchanger. Here the heat is removed by the water and thehot gas condenses to become a liquid. The liquid then flows through a thermal expansion metering system to theair-to-refrigerant heat exchanger coil. The liquid then evaporates becoming a gas, at the same time absorbing heatand cooling the air passing over the surfaces of the coil. The refrigerant then flows as a low pressure gas through thereversing valve and back to the suction side of the compressor to complete the cycle.Figure 59: Heating Mode – (Single Circuit Only Shown)Return AirThermalExpansion Valve Co-Axial HeatExchangerReversing ValveConditioned Air – (Heating)BlowerWater InWater OutSensing Bulband Capillary TubeCompressorCoil – Air to RefrigerantHeat ExchangerHeating Refrigeration CycleWhen the wall thermostat is calling for HEATING, the reversing valve directs the flow of the refrigerant, a hot gas,leaving the compressor to the air-to-refrigerant heat exchanger coil. Here the heat is removed by the air passingover the surfaces of the coil and the hot gas condenses to become a liquid. The liquid then flows through a capillarythermal expansion metering system to the water-to-refrigerant heat exchanger. The liquid then evaporates becoming agas, at the same time absorbing heat and cooling the water. The refrigerant then flows as a low pressure gas throughthe reversing valve and back to the suction side of the compressor to complete the cycle.