Which component controls the timing of the burner ignition?

The control relay is essential for managing various functions within the oil burner system, including the timing of the burner ignition. It acts as an electrical switch that opens and closes circuits, allowing the appropriate components to receive power at the right moments during the burner cycle. When the control relay receives the appropriate signals, it energizes the ignition system, allowing the burner to ignite at the correct time after the system is prepared for operation.

In contrast, components like the flame sensor are responsible for detecting the presence of a flame to ensure safety and reliable operation, but they do not control the ignition timing directly. The transformer is primarily responsible for converting voltage to the level required to spark the ignition but does not manage the overall ignition sequence. The thermostat controls the overall temperature in the environment but does not play a role in the timing of the ignition process itself. Each of these components has a specific function, but it is the control relay that integrates these functions to manage when the burner should ignite.