Brahma 37501007 NDM11 control box

Brahma NDM11 (art. 37501007) is a compact microprocessor control unit designed for automatic ignition and flame monitoring in atmospheric gas and oil burners without pre‑purge. The device operates in intermittent mode and provides a full cycle: ignition, continuous flame monitoring and safety lockout in abnormal situations. The NDM11 model is ideally suited for simple heating systems where purging of the combustion chamber before start‑up is not required, for example in domestic boilers, water heaters, convectors and infrared heaters. Main technical specifications Parameter Value Supply voltage 220–240 V, 50/60 Hz Flame control Ionisation electrode or photodiode FD Burner type Atmospheric (without pre‑purge) Fuel type Gas, liquid fuel Operating mode Intermittent Pre‑purge None (Tv = 0) Safety time (Ts) 3 seconds Operating temperature –20 °C to +70 °C Protection class IP40 Dimensions (H×W×D) 10.7 × 8.1 × 3.6 cm Key features Built‑in high‑voltage ignition transformer – no external unit required, simplifies installation. Microprocessor control with self‑diagnosis and LED indication of operating modes and fault codes. Instant start‑up – no pre‑purge reduces burner start time. Universal flame control – works with an ionisation electrode (gas) or photodiode FD (liquid fuel). Short safety time (3 seconds) – fast shutdown if no flame is present. Electric lockout reset – briefly interrupting power is sufficient to restart. Compact IP40 housing – protection against dust and splashes, convenient for mounting in a control cabinet or directly on the boiler. Applications Domestic gas boilers (atmospheric) Water heaters and gas convectors Infrared heaters Small heat generators without forced ventilation Simple‑type oil burners Order codes 37501007