Caja de control Brahma 37106030 CM31F

Brahma CM31F is a fully solid‑state microprocessor controller designed for comprehensive automation, reliable monitoring and maximum safety of atmospheric gas burners of progressive (modulating) type with a fan, operating in intermittent (cyclic) mode. Purpose and applications Brahma CM31F is a key component for a wide range of heat‑generating equipment, including: Heating and combination boilers (domestic and industrial) Combi steamers, warm air generators and hot air guns Radiant tube heaters, infrared (IR) heaters and water heaters Industrial furnaces, drying chambers and other OEM assemblies The controller is suitable for burners from leading brands such as Riello, Baltur, Immergas, Weishaupt, Lamborghini and others, and is especially often used in Immergas boilers of the Luna 24, Luna 30, Luna 35, Nobel 24, Nobel 30 series manufactured between 2016 and 2024. Main functions and features Non‑volatile lockout with manual reset (Manual Reset) – In any 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 the cause has been eliminated. This eliminates the risk of unintentional burner start‑up and meets the highest safety class. Instant ionisation flame monitoring – Flame detection is based on the rectifying properties of the flame. Response time on flame loss is less than 1 second, guaranteeing instantaneous gas shut‑off to prevent hazardous situations. Two independent safety contacts – The gas valve output is equipped with two independent contacts connected in series, providing redundancy and eliminating the possibility of gas leakage if one of them fails. Built‑in powerful high‑voltage ignition transformer (fully solid‑state type with EMC filter) – Provides stable and reliable ignition of the fuel‑air mixture without an additional external ignition unit. High reliability and service life – The service life of electronic components is at least 250,000 operations under maximum load. Built‑in electronic protection – A varistor protects against voltage surges, and a built‑in fuse protects against short circuits on outputs (valves, fan, lockout signal). Auxiliary contact – For low‑power ignition or for controlling the main gas valve in systems with intermittent power supply. Important: This contact is not isolated from the main supply voltage by reinforced insulation, therefore it is not suitable for controlling extra‑low voltage (SELV) circuits. Compliance with international standards – Fully complies with European safety standards EN298:1993 and EN298:2003 (classification code FMCLXN), CE certified (PIN code 0694BR1154) in accordance with Gas Appliance Directives 90/396 and 93/68. Technical specifications Parameter Value Model Brahma CM31F Article numbers 37106030, 246.124.209 Rated voltage 230 V AC, 50/60 Hz (110‑120 V version available on request) Power consumption 2.5 VA / 15 VA (max. start‑up) Burner type Atmospheric, progressive (modulating), gas, with fan Operating mode Intermittent (must be stopped at least once every 24 hours for self‑diagnosis) Pre‑purge time (tv/tp) 1.5 seconds Safety time (ts) 10 seconds Waiting time (tw) 1.5 seconds Response time on flame loss 5 µA for reliable operation). Lockout reset – When a safety lockout occurs (controller stops starting the burner, red LED lit), find and eliminate the cause (e.g., check gas supply, electrode condition, etc.), then manually press the Reset button on the housing. Maintenance – Periodically check the condition of contacts, wiring integrity, and the cleanliness and position of the ionisation electrode. Contamination or wear of the flame sensor can lead to false trips. Operating mode – The unit is designed for intermittent operation. To maximise service life and safety, the system must be forced to stop at least once every 24 hours. Advantages over alternatives Highest safety level – Manual lockout reset, two independent safety contacts, instant flame monitoring ( 250,000 cycles and built‑in protection against voltage fluctuations. Economy and comfort – Progressive (modulating) power control optimises fuel consumption and reduces the number of burner starts/stops. Easy integration – Compact dimensions (107×81×36 mm) and standard interfaces simplify installation and replacement. Package contents Brahma CM31F burner control unit (art. 37106030) – 1 pc. Quick installation and operation guide. Note: The connection base, ionisation electrode and ignition electrode are sold separately. Order codes 37106030 (main Brahma article) 246.124.209 (alternative Brahma marking)