The temperature for a fire damper actuating device shall not be less than how many degrees Fahrenheit?

The temperature for a fire damper actuating device shall not be less than how many degrees Fahrenheit?

• A. 120 Degrees Fahrenheit
• B. 140 Degrees Fahrenheit
• C. 160 Degrees Fahrenheit
• D. 180 Degrees Fahrenheit

Answer: (C)

Fire dampers rely on a heat-triggered actuating device, so the key idea is understanding the temperature at which the damper is designed to activate. The device must not react at normal operating temperatures, but it must engage reliably when heat from a fire is present. The minimum temperature rating of 160°F ensures the damper will close as heat rises to fire conditions while avoiding nuisance closures during typical building operation. If the rating were lower, closures could occur too easily in normal heat buildup; if it were higher, the damper might not close promptly enough in a developing fire. Some standards reference a similar value around 165°F, but for this item the specified minimum is 160°F, making it the best fit.

Fire dampers rely on a heat-triggered actuating device, so the key idea is understanding the temperature at which the damper is designed to activate. The device must not react at normal operating temperatures, but it must engage reliably when heat from a fire is present. The minimum temperature rating of 160°F ensures the damper will close as heat rises to fire conditions while avoiding nuisance closures during typical building operation. If the rating were lower, closures could occur too easily in normal heat buildup; if it were higher, the damper might not close promptly enough in a developing fire. Some standards reference a similar value around 165°F, but for this item the specified minimum is 160°F, making it the best fit.