Brahma 37103252 CM12F control box

Brahma CM12F is a high‑tech microprocessor controller designed for complete automation and safety of two‑stage atmospheric gas burners operating in intermittent (cyclic) mode. It is ideally suited for equipment with forced air supply (fan) as well as without, and is a key component for a wide range of heat‑generating equipment. Heating systems: heating and combination boilers (domestic and industrial). Climate control equipment: hot air guns (Master, Oklima), warm air generators, air heaters, infrared (IR) heaters, radiant tube heaters. Water heating and process equipment: water heaters, combi steamers, ovens, gas cookers, industrial furnaces. Compatibility: The controller is suitable for burners from leading brands: Riello, Weishaupt, Giersch, Baltur, Lamborghini and others. Main functions and features Two‑stage power control – Enables the burner to operate in two modes (partial and full load), significantly improving efficiency and comfort by reducing the number of on/off cycles. Reliable manual lockout reset (non‑volatile lockout) – A key feature of the CM series. In an abnormal situation (e.g., ignition failure or sudden flame loss) the device automatically locks out. To restart, the Reset button on the housing must be pressed manually after eliminating the cause of the fault. This eliminates the risk of unintentional burner start‑up and meets the highest safety class. Instant ionisation flame monitoring – System safety is based on the ionisation method of flame detection. On flame loss, the controller reacts in less than 1 second, instantly shutting off the gas supply. Built‑in high‑voltage ignition transformer – Equipped with a built‑in solid‑state transformer, providing reliable ignition without the need to purchase and install a separate ignition unit. Two independent safety contacts – Provide redundancy for the critical gas valve control circuits, maximising safety. Built‑in electronic protection: A varistor protects against voltage surges. A built‑in fuse protects the relay against short circuits on outputs (valves, fan, lockout signal). Since the internal fuse is not replaceable, the manufacturer recommends installing an external fast‑acting fuse of suitable rating (not exceeding 3.15 A for the 230 V version). Impact‑resistant housing made of flame‑retardant plastic protects the electronics from mechanical damage, dust and dirt during installation. Fully automatic combustion cycle – The device independently manages all stages of operation: false flame check, pre‑purge, ignition, continuous flame monitoring and safe shutdown. Compliance with international standards and high reliability: Fully compliant with European safety standards EN298:1993 and EN298:2003 (classification code AMCLXN). The manufacturer‑declared service life of the electronics is at least 250,000 operations under maximum load. Technical specifications The following are typical parameters for the CM12F model. Note: Different versions (article numbers) may have different timing parameters. For article 37103252, check the values on the housing label. Parameter Value Model Brahma CM12F Article numbers 37103252, 246.124.081 (identical) Rated supply voltage 220‑240 V AC, 50/60 Hz (110‑120 V version available) Power consumption 7 VA (start‑up up to 10 VA) Burner type Atmospheric, two‑stage Operating mode Intermittent (must be stopped at least once every 24 hours for self‑diagnosis) Pre‑purge time (tv/tp / t1) Check on housing label (typical values: 1.5 s or 30 s) Safety time (ts / t2) Check on housing label (typical: 10 s) Waiting time (tw / t3) Check on housing label (typical: 1.5 s or 30 s) Response time on flame loss 250,000 cycles, built‑in protection against voltage fluctuations. Economy and comfort – Two‑stage power control optimises fuel consumption and reduces the number of burner starts/stops. Easy integration – Compact dimensions and standard interfaces simplify installation and replacement. Package contents Brahma CM12F burner control unit (art. 37103252) – 1 pc. Quick installation and operation guide. Note: The connection base, ionisation electrode and ignition electrode are sold separately. Storage conditions and warranty Warranty period: Typically 6‑12 months from the date of sale (please check with the seller) provided that installation and operating rules are followed. Storage conditions: Store in a dry place, protected from direct sunlight, at a temperature between –20 °C and +70 °C. Order codes 37103252 (main Brahma article) 246.124.081 (alternative Brahma marking)