What is the primary function of a fan assist burner?

The primary function of a fan assist burner is to overcome burner resistance. This type of burner utilizes a fan to increase airflow, which helps to ensure a proper air-fuel mixture that promotes efficient combustion. By overcoming resistance, the fan helps to enhance the performance of the burner, ensuring that it can operate effectively even under varying conditions or limitations related to air intake.

When a burner faces resistance—such as from the venting system or due to the configuration of the appliance—this can negatively impact combustion efficiency. A fan assist burner addresses this challenge by actively moving air into the combustion chamber, which facilitates the necessary conditions for optimal combustion.

While other options like improved combustion quality or the functionality for conversion boilers are important, they are not the primary focus of a fan assist burner. The design and operation of these burners are specifically aimed at counteracting any limitations in air intake and ensuring that the combustion process is efficient and effective.