Which component ignites the oil-air mixture in an oil burner?

The ignition electrode plays a crucial role in the operation of an oil burner by providing the spark needed to ignite the oil-air mixture. When the oil and air are properly mixed and delivered to the combustion chamber, the ignition electrode generates a high-voltage spark that ignites this mixture. This initial ignition is critical for starting the combustion process, allowing the burner to produce heat effectively.

The burner fan, while important for drawing in air and ensuring proper airflow, does not ignite the mixture. The oil pump is responsible for delivering fuel from the storage tank to the burner but not for ignition. The fuel nozzle atomizes the oil to create a fine mist, which aids in combustion, but it is the ignition electrode that is directly responsible for starting the fire by creating the necessary spark. Thus, the ignition electrode is essential in the combustion system for successfully igniting the oil-air mixture.