What is the temperature rating range for sprinklers located at the roof of the ceiling?

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Study for the NFPA 16 Foam-Water Sprinkler Test. With flashcards and multiple choice questions, each question includes hints and explanations. Get ready for your exam!

Multiple Choice

What is the temperature rating range for sprinklers located at the roof of the ceiling?

Explanation:
Sprinkler temperature rating is the heat at which a sprinkler is designed to release water. When sprinklers are located at the roof or in exposed ceiling spaces, ambient heat from sunlight and roof materials can raise the surrounding temperature. To prevent nuisance discharge in these hotter conditions while still guaranteeing activation in a real fire, roof-mounted sprinklers use a higher rating. The 250–300 °F range is the standard high rating used for roof/ceiling installations, which is why it’s the best choice. Lower ratings are intended for typical interior temperatures and would be more prone to false activation in a hot roof space.

Sprinkler temperature rating is the heat at which a sprinkler is designed to release water. When sprinklers are located at the roof or in exposed ceiling spaces, ambient heat from sunlight and roof materials can raise the surrounding temperature. To prevent nuisance discharge in these hotter conditions while still guaranteeing activation in a real fire, roof-mounted sprinklers use a higher rating. The 250–300 °F range is the standard high rating used for roof/ceiling installations, which is why it’s the best choice. Lower ratings are intended for typical interior temperatures and would be more prone to false activation in a hot roof space.

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