Caja de control Brahma 37555003 NDE31

Brahma NDE31 (art. 37555003) is a microprocessor-based control unit designed for automatic ignition, flame monitoring and safe operation of forced‑draught (fan‑assisted) burners running on gas or liquid fuel. The device operates in intermittent mode and provides a full cycle: pre‑purge, ignition, continuous flame monitoring and safety lockout. The NDE31 model is optimally suited for two‑stage and progressive burners with forced air supply where a fixed pre‑purge time is required. Main technical specifications Parameter Value Supply voltage 220–240 V, 50/60 Hz Flame control Ionisation electrode or photodiode FD Burner type Forced‑draught, two‑stage, progressive Fuel type Gas, liquid fuel (diesel, oil) Operating mode Intermittent Pre‑purge time 15 seconds (fixed) Safety time (Ts) 5 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 – periodic checking of all components. Full pre‑purge (15 seconds) – removes residual fuel from the combustion chamber before ignition, increasing safety. Universal flame control – works with an ionisation electrode (gas) or photodiode FD (liquid fuel). Multiple ignition attempts – the system makes several ignition attempts before lockout. Flame loss protection – lockout if the flame disappears within the safety time. Electric lockout reset – briefly interrupting power is sufficient to restart. LED indication – displays operating mode and fault codes for quick diagnostics. Compact IP40 housing – protection against dust and moisture, convenient for mounting in a control cabinet. Applications Forced‑draught gas and diesel burners (two‑stage, progressive) Industrial and domestic heating boilers Heat generators and air heaters Drying chambers, process furnaces, baking ovens Order codes 37555003, 246.124.266