The minimum clearance for vent terminals of natural draft venting appliances is how many inches?

The minimum clearance for vent terminals of natural draft venting appliances is specifically set at 9 inches to ensure proper venting performance and to prevent potential hazards. This clearance requirement is crucial as it helps to avoid interference from nearby structures or weather effects that could impair venting. By establishing this minimum distance, the design ensures adequate air flow and minimizes the risk of back-drafting, which can lead to carbon monoxide exposure and other dangerous situations. Adhering to this standard is essential for the safe and efficient operation of vented appliances.