In buildings that utilize duct detectors and a fire alarm system, the fire alarm system must monitor which component?

In buildings that utilize duct detectors and a fire alarm system, the fire alarm system must monitor which component?

• A. Duct detectors
• B. The roof
• C. The stairs
• D. The exit signs

Answer: (B)

Duct detectors are initiators tied to the fire alarm system, so the system must supervise them to ensure reliable detection and a coordinated response. When smoke is detected in the ductwork, the fire alarm control panel responds by alarm signaling and can also interface with HVAC controls to help contain smoke, such as trimming or shutting down air movement. This supervision also detects detector faults or wiring issues, preventing a hidden failure from compromising safety. The roof, stairs, and exit signs aren’t the components this setup is designed to have monitored by the fire alarm system in the same way; duct detectors are the essential devices whose status the system must continuously monitor to protect the building's airflow and life safety.

Duct detectors are initiators tied to the fire alarm system, so the system must supervise them to ensure reliable detection and a coordinated response. When smoke is detected in the ductwork, the fire alarm control panel responds by alarm signaling and can also interface with HVAC controls to help contain smoke, such as trimming or shutting down air movement. This supervision also detects detector faults or wiring issues, preventing a hidden failure from compromising safety. The roof, stairs, and exit signs aren’t the components this setup is designed to have monitored by the fire alarm system in the same way; duct detectors are the essential devices whose status the system must continuously monitor to protect the building's airflow and life safety.