A duct detector must be tested how often?

A duct detector must be tested how often?

• A. Biannually
• B. Annually
• C. Every 5 years
• D. Monthly

Answer: (B)

Duct detectors must be tested annually. This full functional test, done as part of the system’s inspection, testing, and maintenance, verifies the detector responds to smoke, triggers the fire alarm correctly, and communicates with the control panel while confirming power and wiring are sound. Monthly checks are typically limited to quick status verifications or cleaning and do not replace a complete annual test. More infrequent intervals would not meet standard maintenance practices for initiating devices like duct detectors.

Duct detectors must be tested annually. This full functional test, done as part of the system’s inspection, testing, and maintenance, verifies the detector responds to smoke, triggers the fire alarm correctly, and communicates with the control panel while confirming power and wiring are sound. Monthly checks are typically limited to quick status verifications or cleaning and do not replace a complete annual test. More infrequent intervals would not meet standard maintenance practices for initiating devices like duct detectors.