19 EnglishPiping DiagramPED categories of equipment - High pressure switches : category IV; Compressor : category II; Accumulator: category: I;Other art 3§3 equipment.NOTE:When the high pressure switch is activated it must be reset manually by a qualified person.7.9CuT7.9CuT7.9CuT7.9CuT12.7CuTM12.7CuT(12.7CuT)(9.5CuT)(12.7CuT)12.7CuT12.7CuT12.7CuTField pipingThermistor (gas)Refnet header12.7CuTGas stop valve12.7CuT 15.9CuTMufflerMuffler15.9CuT15.9CuTAccumulatorCompressor7.9CuTMuffler9.5CuT12.7CuT4-way valveHeat exchangerPropeller fanFan motor7.9CuT7.9CuT7.9CuTMVMVMVABCElectronic expansion valve6.4CuT6.4CuT6.4CuTFilterRoom ARoom BRoom CField pipingLiquidGas(6.4CuT)(6.4CuT)(6.4CuT)Room ARoom BRoom C9.5CuTLiquid stop valve9.5CuT9.5CuT9.5CuT7.9CuT Muffler with filterCapillary tubeDistributorRefrigerant flowRefnet headerAccumulatorDischarge pipe thermistorThermistor (liquid)HeatingCoolingRefnet headerApplicable models3MXM52M2V1B3MXM40M2V1B3AMXM52M2V1BS1PHS2PH High pressure switchManual resetAutomatic resetOutdoor UnitHeat exchanger thermistorOutdoor air temperature thermistor7.9CuT7.9CuT7.9CuT7.9CuT12.7CuTM12.7CuTABC(12.7CuT)(9.5CuT)(12.7CuT)12.7CuT12.7CuT12.7CuTField pipingThermistor (gas)Refnet header12.7CuTGas stop valve15.9CuT 15.9CuTMufflerMuffler15.9CuT15.9CuTAccumulatorCompressor9.5CuTMuffler9.5CuT12.7CuT4-way valveHeat exchangerPropeller fanFan motor7.9CuT7.9CuT7.9CuTMVMVMVABCElectronic expansion valve6.4CuT6.4CuT6.4CuTFilterRoomRoomRoomField pipingLiquidGasABC(6.4CuT)(6.4CuT)(6.4CuT)RoomRoomRoom9.5CuTLiquid stop valve9.5CuT9.5CuT9.5CuT7.9CuTMuffler with filterCapillary tubeDistributorRefrigerant flowRefnet headerAccumulatorDischarge pipe thermistorThermistor (liquid)HeatingCoolingRefnet headerApplicable models3MXM68M2V1BS1PHS2PH High pressure switchManual resetAutomatic resetSVSolenoid valve9.5CuT9.5CuT6.4CuT12.7CuTOutdoor UnitHeat exchanger thermistorOutdoor air temperature thermistor15.9CuT