Detectors installed in the duct system are designed to monitor smoke in which area?

Detectors installed in the duct system are designed to monitor smoke in which area?

• A. The duct system
• B. Occupant spaces
• C. Exterior walls
• D. Roofs

Answer: (A)

Detectors placed in the duct system are meant to sense smoke carried by the building’s HVAC air inside the ductwork itself. By monitoring the air in the ducts, they provide early warning and can trigger actions like shutting down fans or activating smoke-control measures before smoke reaches occupied spaces. They’re not intended to sense smoke in individual rooms, on exterior walls, or on roofs, which is why the duct air is the area being monitored.

Detectors placed in the duct system are meant to sense smoke carried by the building’s HVAC air inside the ductwork itself. By monitoring the air in the ducts, they provide early warning and can trigger actions like shutting down fans or activating smoke-control measures before smoke reaches occupied spaces. They’re not intended to sense smoke in individual rooms, on exterior walls, or on roofs, which is why the duct air is the area being monitored.