What device automatically shuts down the entire HVAC system during a fire alarm activation?

Prepare for the FDNY F-80 Fire Safety and Alarm Systems Exam. Study with multiple-choice questions and detailed explanations to enhance your understanding. Get exam-ready with thorough preparation!

The device responsible for automatically shutting down the entire HVAC system during a fire alarm activation is a duct smoke detector. This component is designed to monitor the air flowing through the ductwork for signs of smoke or fire. When smoke is detected, the duct smoke detector sends a signal to the HVAC control system to shut down the air handling equipment, which helps to prevent the spread of smoke and harmful gases throughout the building via the ventilation system.

This function is critical in fire safety protocols, as it limits the movement of smoke, protects occupants, and facilitates safer evacuation. The duct smoke detector plays a crucial role in enhancing the overall fire safety of a building by ensuring that the HVAC system does not compromise air quality or contribute to fire spread.

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