Are duct smoke detectors required in your building?


Based on "CAN/ULC-S524"

SNQuestionYES or NO
Q1 Are air velocities less than 1.5m/s? Yes No
Q2 Are air velocities more than 1.5m/s? Yes No



Based on "NFPA 90A"

SNQuestionYES or NO
Q1 Is the air supply systems with a capacity greater than 2,000 CFM’s? Yes No
Q2 Is the air supply systems with a capacity greater than 15,000 CFM’s ? Yes No
Q3 Is each storey with a commonly shared return in multi-storey buildings? Yes No



Developed by
Ziyutec Inc.
Tel: +1 604 370 3361
Unit 100, 10551 Shellbridge Way, Richmond, BC V6X 2W8
info@ziyutec.com
www.ziyutec.com