Boiler flame failure protection

Flame failure protection is an important safety feature in a boiler that is designed to detect if the flame in the burner goes out and take corrective action to prevent any dangerous situations.

When the flame in the burner of a boiler goes out, the fuel supply to the burner is not automatically shut off, which can cause a buildup of gas or oil in the combustion chamber. This can lead to a dangerous situation if the flame is reignited while there is still a significant amount of fuel present.

To prevent this, most modern boilers are equipped with a flame sensor that monitors the burner flame and shuts off the fuel supply to the burner if the flame goes out. This can be achieved using various methods, such as using ultraviolet sensors to detect the flame or using ionization sensors that detect the electrical conductivity of the flame.

In addition to the flame sensor, many boilers also have other safety features, such as high-limit temperature switches and pressure relief valves, to ensure safe operation. Regular maintenance and inspection of the boiler and its safety features are also important to ensure that they are functioning properly and to identify and address any potential issues before they become a safety hazard.