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Only new sprinklers shall be installed in sprinkler systems. Listed corrosion-resistant sprinklers shall be installed in locations where chemical or corrosive vapors exist. Damaged sprinklers shall be replaced.
Sprinklers shall be designed to open at temperatures from 135 to 165 degrees Fahrenheit in locations where the ceiling temperature does not exceed 100 degrees Fahrenheit. Where the ceiling temperature exceeds 100 degrees Fahrenheit, the temperature ratings of sprinklers shall be in accordance with the following table:
Maximum Ceiling Temperature | Sprinkler Temperature Rating | Sprinkler Temperature Classification |
150 F | 175 to 225 F | Intermediate |
225 | 250 to 300 | High |
300 | 325 to 375 | Extra high |
375 | 400 to 475 | Very extra high |
475 | 500 to 575 | Ultra high |
Sprinklers installed under skylights shall be of the intermediate temperature classification.
Intermediate classification sprinklers may be used throughout industrial and storage occupancies.
(Prior code § 91-20; Amend Coun. J. 10-30-96, p. 31216, § 1)