Brahma Burner control unit NDM32 37565010

The Brahma NDM32 37565010 is a microprocessor-based burner control unit designed for automatic ignition, flame monitoring, and safe operation of atmospheric burners with progressive (modulating) control. It operates on a supply voltage of 220–240 V and features a pre-purge time of 20 seconds and a safety time of 5 seconds. The unit works with an ionisation electrode or photodiode FD for flame detection, and is suitable for gas or liquid fuel. It has a flame loss reaction time of less than 1 second and includes a non-volatile lockout with manual reset for safety. The device is housed in a flame-retardant plastic body with protection class IP00, weighs 0.2 kg, and measures 10.7 x 8.1 x 3.6 cm.

Parts of this type are selected by matching the supply voltage, flame detector type, and burner control sequence (pre-purge and safety times) to the existing system. The control unit must be compatible with the burner's fuel type and modulation method. Installation involves mounting the unit in an enclosure that provides adequate protection, as the device itself has IP00 rating. Before ordering, verify the dimensions and ensure the mounting arrangement fits the available space.

Common failures include loss of flame detection, which triggers a lockout condition requiring manual reset. The unit may fail to start if the pre-purge or safety timings are incorrect, or if the flame detector is faulty. Symptoms include the burner not igniting, frequent lockouts, or the system shutting down unexpectedly. Check the flame detector, wiring connections, and supply voltage for issues.