Where are the two places that oil is filtered before it is burned?

Oil is filtered at crucial points in the fuel delivery system to ensure that contaminants do not reach the burner, which could impair performance or cause damage. The correct answer highlights two specific areas where this filtration occurs: within the fuel pump and at the nozzle.

The fuel pump plays a vital role by moving the oil from the tank to the burner. During this process, any particles or impurities present in the oil can be caught and filtered out, ensuring that only clean oil is pushed through to the nozzle. The nozzle itself is another critical filtration point because it atomizes the oil into a fine spray for combustion. If debris or contaminants were to reach the nozzle, it could lead to improper fuel atomization, resulting in inefficient or erratic burning, and potentially causing safety hazards.

This combination of filtration at these two locations enhances the overall efficiency of the oil-burning system and helps maintain safe and effective operation.