Fire alarm control units that actuate suppression must be listed for which service?

• A. Releasing service
• B. Alarm service
• C. Normal service
• D. Maintenance service

Answer: (A)

This question tests listing requirements for devices that actuate a suppression system. When a fire alarm control unit triggers release of a suppression agent, it is performing a release function, not just sounding an alarm. That actuation has direct safety implications, so the equipment involved must be listed for releasing service. Listing for releasing service ensures the release mechanism, wiring, power, and interlocks are evaluated for reliability and safe operation under fire conditions, and that the device is approved to interface correctly with the suppression system.

Other service categories cover different roles: alarm service is for devices that only signal alarms, normal service covers general operation, and maintenance service relates to upkeep and testing. None of these address the critical act of releasing a suppression system, which is why releasing service is the appropriate listing.