What is the minimum clearance required for appliances designed for natural draft venting from vent terminals to any openings for combustion products entry?

The minimum clearance required for appliances designed for natural draft venting from vent terminals to any openings for combustion products entry is established to ensure safety and proper ventilation. According to the North Carolina Mechanical Code, a distance of at least 9 inches is mandated for this clearance. This requirement helps prevent backdraft of harmful gases into the living space, ensuring that combustion products are vented safely outside the building.

Adhering to this clearance not only ensures compliance with safety regulations but also supports the efficient operation of the venting system, preventing any potential negative effects that could arise from insufficient separation between vent terminals and points of potential combustion product entry. Proper installation and maintenance of these clearances are critical for the safe functioning of gas appliances, promoting both efficiency and safety in residential and commercial settings.