Forced draft systems must be designed to prevent what?

Forced draft systems are specifically engineered to ensure the safe and efficient venting of combustion gases, which primarily includes flue gases produced during the combustion process. The prevention of flue gas leakage is critical as these gases can contain harmful substances, such as carbon monoxide, which pose serious health risks.

In a forced draft system, a fan or blower is used to push combustion air into the combustion chamber and enhance the flow of flue gases through the venting system. This setup helps maintain a slight positive pressure, which is essential for effectively expelling gases from the system and preventing them from leaking back into the living or working spaces.

While other issues such as heat build-up, noise pollution, and condensation can be concerns in heating systems, the paramount consideration in forced draft systems is the safe management of flue gases. Leakage poses direct safety hazards; therefore, ensuring that there are no leaks in the system is critical for the design and operation of forced draft systems.