What circulates the oil throughout the system?

In an oil burner system, the component that is primarily responsible for circulating the oil throughout the entire system is the pump. The pump effectively moves the oil from the storage tank through various lines to the burner, ensuring a continuous supply for combustion.

While the suction line plays a role in drawing oil into the pump from the tank, it is not the component that circulates the oil throughout the entire system on its own. The return line is involved in returning unused oil back to the tank, and the filtering mechanism is there to filter the oil before it reaches the burner but does not engage in the circulation process itself.

Therefore, the pump's function encompasses the necessary movement of oil, making it essential for maintaining the oil delivery and ensuring the proper working condition of the burner. Understanding the role of the pump is vital for anyone operating an oil burner, as it directly impacts the system's efficiency and safety.