Which of the following accurately describes a forced draft fan?

A forced draft fan is designed to push air into the furnace, which is a critical aspect of its function. By forcing air into the combustion chamber, this fan enhances the efficiency of the combustion process, ensuring that a sufficient amount of oxygen is available for burning fuel. This increased airflow helps in maintaining the desired combustion temperature and stability within the furnace.

The operation of a forced draft fan is vital for maintaining the pressure within the furnace, which aids in optimal fuel combustion. It is the movement of air into the furnace that creates the necessary conditions for effective heat generation. In types of heating systems where the forced draft fan is employed, it directly influences the performance and efficiency of the entire system.

Understanding the role of the forced draft fan is essential for anyone working with combustion systems, as it highlights how vital air management is in the efficient operation of heating equipment.