What is the temperature rating for sprinklers located at an intermediate level, unless ambient conditions require higher?

What is the temperature rating for sprinklers located at an intermediate level, unless ambient conditions require higher?

• A. 135F to 170F
• B. 250F to 300F
• C. 90F to 110F
• D. 180F to 230F

Answer: (A)

Sprinkler temperature ratings are chosen to match the expected ambient conditions so the device doesn’t activate too early in a normal environment, but will respond promptly in a fire. For sprinklers placed at an intermediate level in typical indoor settings, the standard rating is 135°F to 170°F. This range is high enough to avoid nuisance activations from ordinary temperatures, yet low enough to ensure timely operation as a fire heats the space. If the area has unusually high ambient temperatures or radiant heat sources, a higher rating would be selected (for example, 180–230°F or 250–300°F). So the appropriate rating in this common scenario is 135°F to 170°F.

Sprinkler temperature ratings are chosen to match the expected ambient conditions so the device doesn’t activate too early in a normal environment, but will respond promptly in a fire. For sprinklers placed at an intermediate level in typical indoor settings, the standard rating is 135°F to 170°F. This range is high enough to avoid nuisance activations from ordinary temperatures, yet low enough to ensure timely operation as a fire heats the space. If the area has unusually high ambient temperatures or radiant heat sources, a higher rating would be selected (for example, 180–230°F or 250–300°F). So the appropriate rating in this common scenario is 135°F to 170°F.