Typical heating boiler fuel oil systems include how many fixed capacity nozzles?

In typical heating boiler fuel oil systems, the standard configuration includes two or three fixed capacity nozzles to ensure efficient combustion. The use of multiple nozzles allows for better distribution of fuel within the combustion chamber, enhancing the overall efficiency and effectiveness of the heating process.

Having two or three nozzles provides a balanced approach to fuel atomization and mixing with air, which is crucial for achieving optimal combustion conditions. This setup can adjust to varying demands, ensuring that the boiler operates efficiently under different load conditions.

In contrast, options that suggest fewer than two nozzles may not provide sufficient fuel delivery for larger systems, and those suggesting more than three could lead to unnecessary complexity and cost without significant performance benefits. Therefore, the choice reflecting the use of two or three nozzles aligns with standard practices in the design and operation of fuel oil systems in heating boilers.