Brahma Microprocessor controller DMN11 37508000

Microprocessor-based flame safeguard controller for two-stage gas and oil burners operating in intermittent (cyclic) mode. It uses ionisation flame detection, with a flame-loss reaction time of less than 1 second, and provides two independent safety contacts. The controller verifies the air pressure switch, then drives the fan, ignition transformer, and fuel valve; it may interact with modulating actuators. In the event of flame failure, it locks out.

Parts of this type are selected by exact series and type designation, supply voltage, safety times, pre-purge times, and the flame detection method. The base or plug pattern varies; a replacement must match the original pattern, and controls from different series of the same brand are not interchangeable. Before ordering, verify the existing unit's type designation, voltage, connector arrangement, and safety time. A mismatched safety time or flame detection method will cause incorrect operation or lockout.