Technical Standards and Safety Authority (TSSA) G3 Practice Exam

What type of burner is equipped with a constant ignition source and a flame arrestor?

1. Premix burner

2. Power burner

3. Conversion burner

4. Purge burner

The correct answer is: Purge burner

A purge burner is designed to be equipped with a constant ignition source and a flame arrestor. This type of burner is typically used in applications where it is crucial to ensure that any gas-air mixture is pre-ignited and safely managed. The constant ignition source guarantees that the burner remains lit, while the flame arrestor acts as a safety feature to prevent flames from propagating back into the burner or gas supply, thus enhancing safety during operation. In contrast, other types of burners mentioned may not have these specific safety features or mechanisms related to a constant ignition source and flame arrestor. For instance, premix burners blend fuel and air before ignition, relying on proper mixing rather than a constant ignition source. Power burners use forced air to deliver combustion but may not be designed for continuous ignition. Conversion burners are typically used to switch fuel types and may focus on different operational factors rather than safety features like those found in a purge burner.