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tqcci I Fire & Building Products Technical Services: Tel: (800) 381 -9312 / Fax: (800) 791 -5500 Model ESFR -25 Early Suppression Fast Response Pendent Sprinklers 25.2 K- factor General ing or eliminating the need for a sys- tem fire pump. Also, the Model ESFR - 25 permits use of a maximum deflec- Description for -to ceiling distance of 18 inches (460 mm) versus 14 inches (360 mm); The Model ESFR -25 Pendent Sprin- and a storage arrangement of 40 ft. klers (Ref. Figure 1) are "Early Sup- (12,2 m) with a ceiling height of 45 ft. v 9 pression Fast Response Sprinklers" (13,7 m) does not require in -rack sprin- having a nominal K- factor of 25.2. klers as do ESFR sprinklers having a They are suppression mode sprinklers nominal K- factor of 14.0.' that are especially advantageous as a means of eliminating the use of in -rack Applications for the Model ESFR -25 sprinklers, when protecting high -piled Sprinklers are expanding beyond the storage. current recognized installation stand- ards. For information regarding re- The Model ESFR -25 is primarily de- search fire tests which may be accept- signed for use with storage heights of able to an Authority Having most encapsulated or non- encapsu- Jurisdiction (e.g., flammable liquids, lated common materials including car- exposed plastics, and aerosols), toned unexpanded plastics to 40 ft. please contact the Technical Services," (12,2 m) high and with ceiling heights Department. ." to 45 ft. (13,7 m). In addition, the pro- tection of some storage arrangements WARNINGS of rubber tires, roll paper, flammable The Model ESFR -25 Sprinklers de- liquids, aerosols, and automotive com- scribed herein must be installed and ponents can be considered as well. maintained in compliance with this The ESFR -25 provides the system de- document, as well as with the applica- signer with hydraulic and sprinkler ble standards of the National Fire Pro - placement options not presently avail- tection Association, in addition to the able to the traditional ESFR sprinklers standards of any other authorities hav- having a nominal K- factor of 14.0. In ing jurisdiction (e.g., FM Global). Fail- particular, the Model ESFR -25 has ure to do so may impair the perform - been designed to operate at substan ance of these devices. tially lower end head pressures, as The owner is responsible for maintain- compared to ESFR sprinklers having a ing their fire protection system and de- nominal K- factor of 14.0. This feature vices in proper operating condition. offers flexibility when sizing the sys- The installing contractor or sprinkler tem piping, as well as possibly reduc- manufacturer should be contacted with any questions. IMPORTANT Sprinkler Always refer to Technical Data Identification Sheet TFP700 for the "INSTALLER WARNING" that provides cautions with respect to handling and instal- Numbers lation of sprinkler systems and com- ponents. Improper handling and in- IN TY9226 - (Pendent K =25.2) stallation can permanently damage TY9226 is a redesignation for C9226, a sprinkler system or its compo- G8441, and S8010. nents and cause the sprinkler to fail to operate in a fire situation or cause it to operate prematurely. Page 1 of 8 JUNE, 2007 TFP312