What is the role of detection in WCFS?

• A. To automatically initiate discharge when heat is detected in the protected area.
• B. To monitor electrical faults
• C. To trigger audible alarms only
• D. To shut down the HVAC system in all areas

Answer: (A)

The main idea is that detection in a wet chemical fire suppression system is the automatic trigger that senses heat in the cooking area and starts the discharge of the extinguishing agent. In a kitchen, heat detectors or fusible links placed in the hood or surrounding area respond to elevated temperatures, and when activated, they send a signal to release the wet chemical agent through the head, spraying it over the appliance and hood to rapidly suppress the fire. This function is not about monitoring electrical faults, nor is it about sounding alarms by itself, and it doesn’t require shutting down the entire building’s HVAC—any ventilation changes are limited to the protected area as part of the system’s response.