Massachusetts Oil Burner License Practice Test

What is the primary function of a fuel de-aerator?

1. Increase fuel pressure

2. Eliminate the need for a return line back to the tank

3. Reduce fuel consumption

4. Improve nozzle spray pattern

The correct answer is: Eliminate the need for a return line back to the tank

The primary function of a fuel de-aerator is indeed to eliminate the need for a return line back to the tank. In heating systems, particularly those utilizing oil burners, the presence of air bubbles in the fuel can cause inefficiencies and operational issues. A fuel de-aerator removes these air bubbles from the fuel before it reaches the burner, which not only improves system efficiency but also allows for a more straightforward and consistent flow of fuel to the burner. By eliminating the return line, the system can operate under a more controlled environment, reducing the complexity of the installation and maintenance processes. This one-way flow also helps ensure that the fuel being used is free of air, leading to better combustion characteristics and overall performance of the oil burner system.