Individual smoke detectors shall not be required for any fan powered unit serving only __________.

Individual smoke detectors are not required for fan-powered units serving only one space because the primary purpose of smoke detectors is to provide early warning of smoke in areas where people are present. When a fan-powered unit is exclusively serving a single space, that space is typically small and can be adequately monitored by existing smoke detection systems, such as those installed near the exits or in interconnected systems.

This consideration acknowledges that such units are not used to distribute air to multiple areas, which could complicate smoke detection by potentially spreading smoke beyond the immediate area. Additionally, if the space is confined and regularly occupied, it allows for more efficient evacuation and response measures without the need for additional smoke alarms specifically tied to fan-powered units. The distinction highlights the importance of targeted safety measures rather than applying blanket requirements that may not enhance safety in every context.