What device is required above each protected cooking appliance?

• A. Fusible link or heat detector
• B. Automatic sprinkler head
• C. Thermistor sensor
• D. Smoke detector

Answer: (A)

The initiating device placed above each protected cooking appliance is a fusible link or heat detector. This setup ensures rapid actuation of the kitchen hood fire suppression system whenever heat from a cooking fire is detected. A fusible link is a temperature-sensitive element that melts at a specified temperature, releasing the suppression mechanism, while a heat detector serves a similar purpose by sensing elevated heat and triggering discharge. Either device is used to activate the hood’s extinguishing agent precisely where the fire starts, providing immediate protection for the appliance and the area above it.

An automatic sprinkler head is part of the general sprinkler system and is not the required initiating device above each cooking appliance. Smoke detectors and thermistor sensors are not the mandated initiators for kitchen hood protection in this location.