Equipment located outside a building must comply with occupancy classification if it is within how many feet of a building opening?

The requirement for equipment located outside a building to comply with occupancy classification within a specified distance relates to safety and protection from potential hazards. When equipment is placed near a building opening, such as windows, doors, or ventilation intakes, it can pose risks like fire hazards or exposure to harmful emissions.

In the context of the North Carolina Mechanical Code, the specific distance of 20 feet is significant as it strikes a balance between allowing necessary outdoor equipment operation while ensuring that it does not adversely affect the occupants inside the building. By requiring compliance within this distance, the code aims to minimize risks such as smoke, fumes, or excessive heat from affecting the indoor environment, thus promoting safety and health standards.

This provision reflects a comprehensive approach to maintaining safe distances between outdoor mechanical systems and building openings, which is crucial for preserving air quality and safety in occupied spaces.