Siemens LOA24.171B17 control box

Siemens LOA24.171B17 burner controls are used for start-up and monitoring of 1- or 2-stage oil burners with intermittent operation. Used for burners with fuel throughput up to 30 kg/h. Yellow flame monitoring via photoresistive detector QRB..., blue flame monitoring via QRC detector. Undervoltage detection. Shunt contact for pre-heater. Special version for waste incineration plants and steam generators.