By Robert Trotter, CBO, CFM, MCP - Manager, Sr. Life Safety Specialist
Smoke detectors are an integral component of a fire alarm and detection system. Placement of detectors and other devices are essential to proper operation of the system. Smoke detectors installed too close to HVAC diffusers may cause nuisance alarms, and more importantly fail to function or cause a delay in alarm transmission and occupant notification. Most people believe detectors are required to be installed at least 3 ft from an HVAC diffuser. Smoke detectors are to be installed out of the air stream. To correct the deficiency detectors can be relocated or the diffuser can be changed to distribute a different air stream.
