Smoke Detector Location in Duct
Smoke detectors in ductwork must be located per code for proper detection.
What You Might Be Looking At
smoke detector mounted in ductwork with sampling tubes extending into airstream
Apprentice words: smoke alarm in duct, detector in pipe, smoke sensor, duct detector
Trade terms: duct smoke detector, smoke detector in air duct, sampling tube
Check First
What Not To Do
Don't install duct smoke detectors without checking NFPA 72 requirements. Don't sample from turbulent areas.
What can go wrong: Delayed smoke detection, false alarms, code violation, inspection failure, life safety risk
Better Foreman Question
For this duct smoke detector, what are the location requirements per NFPA 72? And is there adequate access for testing?
Verify With
Reference type: NFPA 72, NFPA 90A, project specs
Source to verify: NFPA 72 National Fire Alarm Code, NFPA 90A, project fire alarm drawings
Safe wording: Detector placement and sampling tube requirements are controlled by fire alarm design, manufacturer instructions, code, and AHJ. Verify before cutting or mounting.