Duct smoke detector
Duct smoke detector. The sampling tube diameter should be about 1 inch. Drill 10 to 12 evenly spaced holes about 5 mm in diameter, each facing into the airflow, and make sure the duct is sealed
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2 documents to download AW-CSD311, AW-CSD313Description
Duct-type smoke detector. The sampling tube diameter should be about 1 inch. Drill 10 to 12 evenly spaced holes about 5 mm in diameter. Each hole must face into the airflow. Make sure the duct is sealed where the tube passes through. Compliant with NFPA 72.90a and 101.
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