VCCX2 Controller Technical GuideREFRIGERANT SYSTEM MODULE WIRING55RSMSD Outputs WiringFigure 39: RSMSD Outputs WiringCAUTION: The Shraeder port used for installation of thesuction pressure transducer should be located in a verticalposition of the suction line to prevent refrigerant oil fromaccumulating in the sensor.Head Pressure ControlThe Head Pressure Transducer is used to measure Head Pressure atthe discharge line. This Head Pressure is used to drive the CondenserFan with a 0-10 VDC output signal or valve with a 2-10 VDC outputsignal to maintain a given Head Pressure Setpoint.Compressor Discharge SensorThe Digital Compressor Discharge Temperature Sensor monitorsthe discharge temperature from the Digital Compressor to protectagainst overheating.Leaving Water Temperature SensorThe Leaving Water Temperature Sensor is used to measure theLeaving Water Temperature when used on a WSHP unit.
