Which of the following is NOT an example of actuation of fire alarm control equipment?

• A. Shutting down RTU
• B. Closing fire doors
• C. Releasing magnetic locks to open exterior doors
• D. Activating a sprinkler system

Answer: (D)

Actuation by fire alarm control equipment means actions the alarm system directly triggers to support life safety, such as halting ventilation to limit smoke spread, closing fire doors to compartmentalize, and releasing magnetic door locks to facilitate safe egress. Shutting down an RTU (ventilation), closing fire doors, and releasing magnetic locks are all examples of those alarm-controlled actions that help manage the environment during a fire. Activating a sprinkler system, on the other hand, belongs to the fire protection/suppression system. While the alarm can notify or interface with suppression, the actual actuation of sprinklers is not performed by the fire alarm control equipment, so it’s the action that’s not an actuation of the alarm system.