Selecting the Right HVAC Smoke Detector for Air Handling Units
An HVAC smoke detector is a duct-mounted device that samples air moving through an air handling unit and signals the fire alarm system, which can then shut down fans and stop smoke from spreading through a building. Choosing the right one depends on the code that applies to the unit, the type of fire alarm panel it will connect to, the duct conditions and whether you are specifying new equipment or replacing an older device. This guide walks through each decision in order so facility managers, contractors and engineers can select with confidence. Getting this selection wrong has practical consequences. A detector that does not match the panel will not report correctly, a poorly placed unit can miss smoke or nuisance-alarm repeatedly, and a failed inspection can delay occupancy. Understanding how an HVAC smoke detector works, and what the rules expect from it, makes those problems easier to avoid. What an HVAC Smoke Detector Does and Does Not Do Smoke moves with air, and ...
