Brahma Microprocessor-based burner control unit TGRD92 18047150

The Brahma TGRD92 is a microprocessor-based burner control unit for automatic ignition control, flame monitoring, and safe operation of gas and liquid fuel burners in intermittent (cyclic) mode. It operates on a supply voltage of 200–240 V, with a safety time of 5 seconds and a pre-purge time of 1.5 seconds. Flame detection is via a photodiode (fd). The unit has a net weight of 0.2 kg, protection class IP00, dimensions of 107 x 81 x 36 mm, and operates in ambient temperatures from -20 to 70 °C. Its service life under maximum load is 250,000 cycles.

Parts of this type are selected by matching the exact series and type designation, supply voltage, safety time, pre-purge time, and flame detection method. The base or plug pattern must also match the existing wiring harness. Burner controls are typically mounted on a standard base with screw terminals or a multipin plug, so inspect the base for compatibility before ordering. Verify that the type designation and electrical ratings correspond to the existing control's markings and the burner data plate.

Items of this kind may fail due to component wear, voltage surges, or contamination. Symptoms include the burner failing to start, locking out without flame detection, or intermittent operation. Check for proper supply voltage, correct wiring, and clean flame detector optics. If the control locks out, a manual reset is required, but repeated lockouts indicate a fault in the burner system.