Which section of the fuel gas code specifically addresses the vents of appliances?

The section of the fuel gas code that specifically addresses the vents of appliances is indeed Section 503. This section outlines the requirements necessary for venting gas appliances safely and effectively. Proper venting is critical to ensure that combustion gases are expelled from the building and that appliances function correctly and safely without the risk of gas buildup in living spaces. Section 503 includes specifications on vent materials, installation practices, and clearances needed to maintain safety standards in the venting process. Understanding the requirements in this section is essential for ensuring compliance with safety regulations when installing or servicing gas appliances.