Brahma 24085281 SM191N.2 control box

Brahma SM191N.2 (art. 24085281) is a microprocessor controller ("burner management system") designed for automatic ignition control, flame monitoring, and safe operation of atmospheric gas burners with an intermittent cycle. The device is suitable for burners with both natural draft (without fan) and forced air supply (with fan in the combustion circuit). This modification (art. 24085281) features an increased pre-purge time of 5 seconds (as well as a wait time of 5 seconds), which is an intermediate option between fast blocks (1.5 s) and long ones (20 s). This makes it an ideal choice for equipment requiring moderate purging of the combustion chamber before ignition. Application area includes: gas heating and combination boilers (domestic and industrial); Master heat guns (BV, B series), OKLIMA and other heat generators; industrial air heaters, drying chambers; Riello, Baltur, Weishaupt, Lamborghini burners with atmospheric combustion. Model 24085281 is often used as a replacement for control units on equipment requiring parameters tv=5 s / ts=10 s / tw=5 s. Main functions and features: Full automation of the combustion cycle: the controller independently manages the sequence: checking for false flame → pre-purge (5 s) → ignition (built-in transformer) → combustion monitoring → safe shutdown upon flame loss. Ionization flame detection: flame detection via ionization electrode (rectification effect). Reaction time upon flame loss is less than 1 second, meeting EN 298 requirements. High safety class: Manual reset lockout – in any abnormal situation (flame loss, ionization circuit break, ignition failure), the unit