Siemens LME21.330C1 control box

Siemens LME21.330C1 combustion control unit for monitoring 1- or 2-stage gas burners of small and medium power with intermittent operation. Siemens LME21.330C1 burner automation is used for starting and monitoring 1- or 2-stage gas burners with intermittent operation. Flame monitoring is performed by an ionization electrode or flame detector QRA… with auxiliary unit AGQ3… or by blue flame detectors QRC... The dimensions of the LME21.330C1 housing are the same as those of LGB… and LMG… burner automations. Features: Undervoltage detection. Air pressure monitoring via functional test of the air pressure switch during startup and operation. Remote electrical reset possible. Multi-color indication of fault status and operational messages. Limited number of repetitions. Precise sequence control thanks to digital signal processing. Controlled intermittent operation after 24 hours of continuous operation.