Brahma 30082315 CM31 control box

Brahma CM31 (art. 30082315 / 246.124.051) is a burner management unit for progressive (modulating) atmospheric gas burners. It fully automates the processes of ignition, monitoring and safe shutdown of the burner, guaranteeing stable and long‑lasting operation of your heating equipment. Purpose and applications An ideal choice for automating gas equipment where high reliability and safety are required. Burner type: Progressive (modulating) atmospheric gas burners. Configuration: Suitable for natural‑draught burners or forced‑air burners (with a fan) in the combustion circuit. Equipment: Successfully used in combination and heating boilers, hot air guns and warm air generators, water heaters, combi steamers, as well as ovens and cooktops. Operating mode: Intermittent cycle, which means the system may be stopped at least once every 24 hours for planned maintenance and self‑diagnosis. Key functions The CM31 model combines a number of features that ensure the safety and reliability of your gas equipment. Manual lockout reset: The main feature. Under any abnormal condition (no flame, ignition failure, etc.) the unit goes into a safe lockout state. Restart is only possible manually by pressing the Reset button on the housing after the cause of the fault has been eliminated. This eliminates the risk of unintentional burner start‑up and meets the highest safety class. Ionisation flame monitoring: A reliable method of flame detection based on its rectifying properties. Response time on flame loss is less than 1 second, guaranteeing instantaneous gas shut‑off to prevent hazardous situations. Dual gas valve protection: Equipped with two independent safety contacts connected in series in the gas valve control circuit. This redundancy is critical for preventing gas leaks in the event of electronic faults. High reliability and service life: The robust construction ensures more than 250,000 operating cycles. Thanks to microprocessor control with self‑diagnosis and a built‑in varistor for protection against voltage surges, the device guarantees long‑lasting and trouble‑free operation even under intensive conditions. Built‑in high‑voltage ignition transformer: No external ignition units are required, simplifying the wiring and installation. Auxiliary contact: Designed for systems with intermittent control, for example low‑power ignition or controlling the main gas valve. Standards compliance: The device is certified according to European standard EN 298:2003 (classification code FMCLXN), confirming its suitability for automatic control and flame monitoring systems for gas burners. Main technical specifications Parameter Value Rated voltage 230 V AC, 50/60 Hz (110‑120 V version available on request) Power consumption 9 VA Pre‑purge time (tv/tp) 30 seconds Safety time (ts) 5 seconds Waiting time (tw) 30 seconds Minimum ionisation current 1.2 µA Lockout reset Manual (button on housing) Built‑in ignition transformer 20 kV Base included No (purchased separately) Enclosure protection class IP00 (requires installation in a protective control cabinet) Operating temperature –20 °C to +60 °C Relative humidity max. 95% at 40 °C Dimensions (W×H×D) 116 × 96 × 36 mm Weight 0.17 kg Warranty period 6 months Important: Given the low IP00 protection class, it is strongly recommended to install the unit in a dry, well‑ventilated place inside a protective control cabinet to prevent dust and moisture ingress, which could damage the device. The unit is supplied without a base – it must be purchased separately. The connection diagram is printed on the housing. Advantages of choosing Brahma CM31 Highest safety level: Manual lockout reset, instant flame monitoring and two independent safety contacts on the gas valve. Reliability and durability: Italian Brahma quality, service life >250,000 cycles and built‑in protection against voltage fluctuations. Versatility: Compatible with a wide range of progressive atmospheric burners, including equipment from leading brands and various types of heat‑generating equipment. Easy integration: Compact dimensions and standard connection simplify installation and rapid device replacement. Order codes 30082315 246.124.051