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TFP820 Page 4 of8 . Where the area of Glazing is less than 14.2 linear meters, all window sprin- When acceptable to the Authority Having Jurisdiction the Model WS specific Application klers on one side shalt be calculated. Window Sprinklers may be used in either a sprinklered or unsprinklered building to protectId If an area reduction for quick response nonoperable window openings that are in an interior fire separation,the window sprinklers of are installed on both sides of the window in the fire separation. the linear sprinklers is utilized, length the calculated window sprinklers may t i be reduced,but in no case shall be less 1 than 36 linear feet(1.2 x d900). If a single fire can be expected to INSIDE r// operate Model WS Windowe Sprinklers of j/ JJ ` l/� and sprinklers allwithin calculated designt area the /// a tedremandy system, INSIDE water demand of the window sprinklers T shall be added to the water demand of the hydraulic calculations and shall 4 4 be balanced to the calculated area demand. FIGURE 3A-1—INTERIOR FIRE SEPARATION If the window sprinklers are located in an area other than the hydraulic design When acceptable to the Authority Having Jurisdiction the Model WS Specific Application area,the demand of the window sprin- Window Sprinklers may be used in either a sprinklered or unsprinklered building to protect klers is not required to be added to the nonoperable window openings that are part of a tire separation provided in iwisdictlons demand of the remote hydraulic design where exterior spatial separation is defined as protecting an adjacent building from a fire area.However,it is necessary to prove in your building,window sprinklers are installed on the Interior side of the glass. hydraulically the simultaneous opera- tion of the Model WS Window Sprin- klers and the ceiling sprinklers adjacent to the window sprinklers. OUTSIDE NInon-SprnkreProtection j/ r ` j Can Mate alespri Building Calculate all sprinklers on the most INSIDE demanding side of the glazing assem- bly within the enclosure. EXPOSURE J Exterior Exposure Protection SIDE Calculatethe all valve using theco design FIGURE 3A-2-EXTERIOR FIRE SEPARATION-SPRINKLERS INSIDE requirementsby the delugevalve the design of NFPA. Duration of Water Supply When acceptable to the Authority Having Jurisdiction the Model WS Specific Application Duration of water supply must comply Window Sprinklers may be used in either a sprinklered or unsprinklered building to protect with requirements of NFPA. If window nonoperable window openings that are pad of a fire separation provided in jurisdictions sprinklers are used to provide the where exterior spatial separation is defined as protecting your building from a fire in an equivalency of a fire rating, the water adjacent building,open window sprinklers are installed on the exterior side of the glass. supply must be capable of supplying water for the required rating period. Minimum Flow per Sprinkler INSIDE 20 GPM (75,7 LPM) for8 sprinkler j/ jj spacing of 6 ,7 ft (1 m to 2,44 ` m)or 15 GPM(56,8 LPM)for sprinkler spacing less than 6 ft(1,83 m). OUTSIDE Maximum Pressure per Sprinkler EXPOSURE • Horizontal Sidewall:70 psi(4,B3 bar)' SIDE 4 * The 70 psi is only for cold solder FIGURE 3A-3-EXTERIOR FIRE SEPARATION-SPRINKLERS OUTSIDE purposes. If there is a baffle or a mullion of sufficient depth to act as FIGURE 3A(A-I TO A-3) ta he m maximum pressureres the sprinklers,75p TYPICAL NON-OPERABLE WINDOW OPENINGS the is 175 psi (12,07 bar). • Vertical Sidewall: 175 psi(12,07 bar)