Brahma Microprocessor-based controller CM191N.2 20083301

The Brahma CM191N.2 is a microprocessor-based controller (burner management unit) designed for automatic ignition control, flame monitoring, and safe operation of atmospheric gas burners with progressive (modulating) power control. It operates in intermittent mode and supports ionization flame detection, with a flame loss reaction time of less than 1 second. The unit features a manual lockout reset and is certified to EN 298:2003, with CE marking. It operates on a supply voltage of 220–240 V, has a protection class of IP00, and is housed in impact-resistant plastic. The controller is suitable for use with gas burners from various brands, including Riello, Baltur, Weishaupt, and Lamborghini.

When selecting a replacement control box of this type, ensure the supply voltage, flame detection method (ionization), and safety standards (EN 298) match the existing system. Verify the timing parameters (pre-purge, safety, and waiting times) as they vary by model and must align with the burner's requirements. The unit can be mounted in any position, typically on a DIN rail or with screws, and requires installation in a protective enclosure due to its IP00 rating. Always compare the marking on the old unit with the specifications of the new one before purchase.

Common failures in control boxes of this kind include lockout due to flame loss or ignition failure, often indicated by the unit entering a manual reset state. Symptoms may include the burner failing to start, shutting down unexpectedly, or not responding to reset attempts. Check the ionization electrode for proper positioning and cleanliness, and verify the supply voltage and wiring connections. If the unit repeatedly locks out, inspect the flame detection circuit and ensure the gas supply is consistent.