Brahma-37547005-NDM31-Steuergerät

Brahma NDM31 (art. 37547005) is a modern digital controller from the New Digital Microflat series, designed for automation and safe control of the combustion process in two‑stage gas and oil burners with intermittent operation. The device is suitable for systems with forced air supply and is intended for replacing or upgrading equipment in domestic and industrial heat generation systems. Main technical specifications Parameter Value Supply voltage 220–240 V, 50/60 Hz Power consumption 30 VA Flame control Ionisation electrode or photodiode FD Burner type Two‑stage (with or without fan) Fuel type Gas, liquid fuel Operating mode Intermittent Pre‑purge time (Tv) 15 seconds Safety time (Ts) 5 seconds Operating temperature –20 °C to +85 °C (components up to +70 °C) Protection class IP00 Dimensions (H×W×D) 10.7 × 8.1 × 3.6 cm Weight approx. 0.2–0.5 kg Key features Microprocessor control and safety. On flame loss or other abnormal situations, the automatic system instantly (less than 1 second) interrupts fuel supply and locks out the burner. High‑voltage ignition transformer. The built‑in high‑efficiency ignition transformer eliminates the need for an external unit and ensures reliable start‑up. Two flame control methods. Supports both an ionisation electrode (for gas) and a photodiode FD (for liquid fuel), expanding the range of applications. Manual restart. This version is supplied with a manual fault reset to restore system operation after lockout. Protection and stability. A built‑in varistor protects the device against voltage surges, and an EMC filter suppresses electromagnetic interference. Two independent safety contacts. Gas valve control is duplicated via two independent contacts to increase reliability. Adjustment flexibility. The device allows connection of Brahma VCM0x actuators and valves, as well as a user module for finer tuning. Electrical durability. The service life of the electronic equipment is at least 250,000 operations at the maximum specified load. Applications The Brahma NDM31 37547005 controller is widely used in various heat‑generating equipment: Boiler equipment: heating and combination boilers (gas and oil) Climate control equipment: air heaters, infrared heaters, hot air guns (compatible with popular models such as Master, Oklima, Riello, Weishaupt, Lamborghini) Domestic and industrial equipment: water heaters, furnaces with atmospheric burners, baking ovens and other thermal installations Order codes 37547005, 246.124.177