In addition to removing combustion byproducts, what is another function of the flue?

The function of the flue in a gas appliance extends beyond simply removing combustion byproducts; it also plays a crucial role in facilitating the proper combustion process. One of the essential functions of the flue is to create a draft that pulls in secondary air. This draft is vital because it helps maintain the efficiency of the combustion process by ensuring that there is an adequate supply of oxygen for the fuel being burned.

Creating a draft not only aids in the complete combustion of the fuel but also helps manage the temperature within the appliance, preventing overheating and ensuring a safer operation. The interplay of draft and air supply can significantly influence the performance of the appliance, especially in terms of combustion efficiency and emissions control.

Other functions related to airflow and pressure management are essential, but they do not specifically highlight the role of the flue in actively drawing air into the combustion chamber to support the combustion process as part of its primary function.