NFPA 90A requires supply-side smoke detection on HVAC systems with capacity of at least which value?

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Study for the Fire Alarm Lesson 5and6 Test. Prepare with flashcards and multiple choice questions; each question comes with hints and explanations. Gear up for success on your exam!

Multiple Choice

NFPA 90A requires supply-side smoke detection on HVAC systems with capacity of at least which value?

Explanation:
NFPA 90A addresses limiting how smoke can spread through HVAC systems. When an air-handling system can move a lot of air, detecting smoke on the supply side is required so the system can be shut down or isolated quickly if smoke is detected. The threshold for this requirement is 2000 CFM or more, meaning systems delivering 2000 CFM or higher must have supply-side smoke detection. This helps prevent rapid smoke distribution into occupied spaces and aids safe evacuation and firefighting. Systems below that capacity aren’t mandated to have supply-side detectors, since the risk of widespread smoke spread is lower.

NFPA 90A addresses limiting how smoke can spread through HVAC systems. When an air-handling system can move a lot of air, detecting smoke on the supply side is required so the system can be shut down or isolated quickly if smoke is detected. The threshold for this requirement is 2000 CFM or more, meaning systems delivering 2000 CFM or higher must have supply-side smoke detection. This helps prevent rapid smoke distribution into occupied spaces and aids safe evacuation and firefighting. Systems below that capacity aren’t mandated to have supply-side detectors, since the risk of widespread smoke spread is lower.

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