Si39-302 Piping DiagramsAppendix 2451.2 Indoor UnitFXCQ, FXZQ, FXFQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQR1T : Thermistor for suction air temperatureR2T : Thermistor for liquid line temperatureR3T : Thermistor for gas line temperatureDU220-602DHeat exchanger Gas piping connection portLiquid piping connection port(Flare connection)Flare connection : φ15.9 or lessAttached piping : Above φ19.1FanR3TR1TElectronicexpansion valveFilter FilterR2T(mm)Capacity GAS Liquid20 / 25 / 32 / 40 / 50M φ12.7 φ6.463 / 80 / 100 / 125M φ15.9 φ9.5200M φ19.1 φ9.5250M φ22.2 φ9.5
