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TFP370 Page 7 of 12 QUELL SYSTEM CLASS IV AND CARTONED,UNEXPANDED,GROUP A PLASTIC COMMODITIES GENERAL GUIDELINES: Ultra K17(TY7103)Sprinklers with a 286°F(141°C)temperature rating must be installed in double interlock preaction systems or dry systems for the protection of high piled storage occupancies Including single,double,and multiple-row rack storage, as well as palletized and solid piled storage,of Class IV and cartoned,unexpended,Group A Plastic commodities as defined by NFPA 13(no open top containers).For ceiling only protection(no in-rack sprinklers),the installation criteria is as follows: • a minimum deflector to top of storage clearance of 36 inches(0,9 m) • a maximum coverage area of 100 ft2(9,3 m2)per sprinkler • a minimum coverage area of 80 ft2(7,3 m2)per sprinkler • sprinkler spacing criteria: 12 feet(3,6 m)maximum for unobstructed and non-combustible obstructed construction 10 feet(3,0 m)maximum for combustible obstructed construction 8 feet(2,4 m)minimum for all construction • water supply duration—120 minutes minimum Minimum Sequential S Maximum Minimum Storage Ht./ Design Recommended Water Water Opening Times, Ceiling Ht., Pressure, No.of Design Delivery Time Delivery Time Sec.Mei FL/Ft. psi Sptlnkle (Operating Time), (Operating Time), (m/m) (bar) Ref.(Appendix, smog Sec.'s) 1st 2nd 3rd 4th Test No.) 20/30(6.1/9,1) 22 ft,5) 25(App.0) 25 8 0 3 6 8 25/30(7,6/9,1) 35(2,4) 25(App.E) 25 8 0 3 6 20/35(6,1/10,7) 35(2,4) 25(App.E) 25 8 0 3 6 8 25/35(7,6/10,7) 35(2,4) 25(App. E) 25 8 0 3 6 8 30/35(9,1/10,7) 35(2,4) 25(App.E) 25 8 0 3 6 8 Notes: a. The minimum recommended number of design sprinklers is to be confirmed with the authority having jurisdiction.Refer to the appropnate appendix material.When sprinkler coverage areas of 100 ft2(9,3 m2)are used for all 25 design sprinklers,the resulting design area 6 25001t2(2321r2).II sprinkler coverage areas less than 100 ft2(9,3 m2)are utilized,the design area is not to be less than 22501(2(209m2);therefore,the number of design sprinklers may need to be increased accordingly. b.The mar'nnum water delivery time Wperating time per SprinkF0T-0}shall be calculated so as to assure the minimum sprinkler design pressure is available at each of the most hydraulically demanding lour sprinklers within the noted time(when applying the water delivery calculation enter the sequential sprinkler opening limes for each of the four sprinklers). e. Tnot he wailMl at any f the least hydraulically time(raerat'ng time demanding foer urrspt nkkllerslall be witM1 n the noted time ulated so (when applying s to r Aethe water dum eliverysprinkler calculation pressuren enter the sequential sprinklr opening tim for each f the lour sprinklers). ry ca TABLE C HYDRAULIC DESIGN AND WATER DELIVERY(OPERATING TIME)CRITERIA TO PROVIDE CEILING ONLY PROTECTION OF CLASS IV AND CARTONED, UNEXPANDED GROUP A PLASTIC COMMODITIES C