What is the primary control's function in an oil burner?

The primary control's function in an oil burner revolves around overseeing the operation cycles of the burner itself. This control is crucial for starting, stopping, and regulating the burner during its operational phases, ensuring that it runs efficiently and safely. It helps to manage the ignition process and monitors the burner’s operation to maintain combustion safety.

By controlling the burner operation cycles, it ensures that the oil burner only operates when needed and in response to demand, optimizing energy usage and preventing potential hazards associated with continuous operation without a load or during malfunction conditions. This capability is essential for maintaining flame stability and overall burner performance, emphasizing its central role in oil burner systems.

While other options may seem relevant, they do not define the primary control's main function as effectively as the regulation of operation cycles does. For instance, managing fuel supply and monitoring temperature could be functions related to additional controls within the system, but they are not the fundamental duty of the primary control.