Brahma TGRD, TGRN, TGRP, TGRX Control Boxes for Industrial Burners

Brahma TGRD Digital Controllers – Versatile Automation for Intermittent Burners

The Brahma TGRD series represents a new generation of digital control units designed for gas and oil burners operating in intermittent mode. These compact, microprocessor-based devices combine ignition, flame monitoring, safety shutdown, diagnostics, and timing control in a single integrated module. The result is a reliable, safe, and fully customizable solution for modern combustion systems.

As part of the Brahma burner control lineup, TGRD controllers offer programmable timing options, integrated high-voltage ignition transformers, multiple valve outputs, and built-in self-check diagnostics. Their adaptability and compact design make them ideal for both OEM systems and field replacements where space, safety, and flexibility are critical.

Applications and Use Cases

Brahma TGRD controllers are used in a wide range of heating and industrial applications, including water heaters, infrared burners, air heaters, steam generators, and drying ovens. Their compatibility with single-stage and multi-stage systems makes them suitable for both simple and advanced burner designs. Whether it’s a domestic boiler or a high-performance industrial heater, TGRD ensures repeatable and safe burner operation.

The controllers support both gas and oil burners, allowing for flexible use in mixed-fuel installations. Their robust construction and resistance to voltage fluctuations make them dependable even under demanding conditions such as high humidity, variable air supply, and fluctuating combustion demand.

Design and Wiring

The controller is housed in a compact casing and is available in versions for panel mounting or burner integration. Connections are made via Microflat or multipin bases, depending on the model. Dedicated terminals are provided for power supply, ignition transformer, flame sensor, safety valves (EV1, EV2), thermostat, and air pressure switch.

The flame signal is read from a photoresistor or UV sensor, and if no flame is detected by the end of the safety time (TS), the controller cuts power to the gas valve and locks the unit. Depending on the configuration, reset can be manual or automatic. Wiring diagrams clearly define the input and output logic for safe integration into any burner system.

Control Logic and Safety Functions

Once powered, the controller initiates the purge cycle (TW), energizes the ignition transformer, and opens the main valve (EV1). In dual-stage applications, the second valve (EV2) may also be activated. The device monitors for flame presence and initiates lockout if no flame is detected within the configured safety time.

Self-diagnostics and fault indication are built into the front panel. An LED indicator shows operating status and blink codes for fault detection: steady green for normal flame detection, blinking red for lockout, amber for ignition phase, and sequences for specific errors like ignition failure, pressure faults, or wiring issues.

Status Indication and Reset

A built-in LED is integrated into the reset button. The LED provides constant feedback about the controller’s operational status and diagnostic codes. Some models also support remote reset inputs, allowing installers to integrate the controller into external monitoring systems or service panels for convenience.

Variants and Extended Functions

The TGRD line includes models with multiple timing configurations, power supplies (230V or 120V), and compatibility with external sensors, fans, and safety loops. Built-in ignition transformers generate 8–17 kV at 8.5–12 kHz with high efficiency and stable arc performance.

Available options include fan control (GT/GR series), air pressure switch verification, delayed start functions, dual-stage outputs, pre-ignition and post-ignition timing, and manual or auto-reset logic. All units are designed to meet the latest combustion safety and EMC standards.

Key Advantages

• Digital microprocessor control with programmable safety and ignition timings
• Built-in high-voltage ignition transformer (8–17 kV)
• Compact and integrated design, ideal for OEM and retrofit
• EMC compliance with integrated protection and noise filtering
• Compatible with a wide range of burner and sensor types

Conclusion

Brahma TGRD is a reliable and configurable burner controller designed for modern heating systems. Its combination of safety features, flexible timing, and integrated ignition make it suitable for a broad range of applications in residential, commercial, and industrial environments. Explore all available burner control modules and find the ideal solution for your combustion system.