Wiring Expert Group

Fire Alarm Fan Shutdown Wiring Diagram. 2007 nfpa 72, 6.4.2.1 class. The relay coil must be energized by the facp for fan shutdown.

Duct Detectors Smoke Detection Nfpa 90A Code Quality
Duct Detectors Smoke Detection Nfpa 90A Code Quality from highperformancehvac.com

The detector housing shall be ul listed per ul 268a specifically for use in air handling systems. Types of fire alarm systems with wiring diagrams. This video demonstrates the 24 volt auxilliary fire alarm relay.