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<br />Chapter 3 - System Design <br />Page 3-1 <br />REV. 3 <br /> <br />CHAPTER III <br />SYSTEM DESIGN <br /> <br />This chapler will dEltallthe baslclnformallon necessary for <br />proper design of (he PYRO-CHEM KITCHEN KNIGHT II <br />Reslaurant Flra suppression SYBtem. However, before <br />allempllng any Installallon, Ills neceBsary 10 allend a <br />Factory Carllflcallon Training ClaBs and become Cerlllled 10 <br />design tha PYRO-CHEM KITCHEN KNIGHT II Restaurant <br />Fire Suppression System. The chapler Is divided Into Ihree <br />(3) secllons: <br />Nozzle Coverage and Placemenl <br />. Piping lImllallons <br />. Daleclor ReqUirements <br />Each Df these secllons musl be compleled befDre allempllng <br />any Inslallation. <br /> <br />NOZZLE COVERAGE AND <br />PLACEMENT <br /> <br />This secllon will provide guidelines fDr delermlnlng nDzzle <br />Iype, positioning, and quanllly for duct, plenum, and appli- <br />ance protecllon. <br /> <br />Duct Protection <br /> <br />1115 not required thatlhe fan be shut down Dr the exhaust <br />duct be dampered for the system to operata prDperly. <br /> <br />. All duel proteclion is UL listed wlthoutllmllallon of maximum <br />duct length (unllmlled length). This Includes all varlBlIes Df <br />ductworks both horlzDnlal and verllcallncfudlng duels that <br />run al angles ID the horlzon{al and ducts wilh dlrecllonal <br />.. bands. <br /> <br />Duel proleellon requlres.lhat a nozzle be posllloned to <br />. dlscherge Into (he duel. Two nozzles are available for duel <br />proleclion. <br /> <br />The ModellL Nozzle, Part No. 551026, Is a ona (1) flow <br />nozzle. A single IL nozzle is capable of prolecllng square or <br />.reclangular ducls wilh a maximum perlmeler of 50 In. <br />(127 em), with the dlagonel being a maximum of 1 B 3/4 In. <br />(47.6 em). It can also prolecl a rDund duel wllh a maximum <br />diameter of 16 In. (40.6 em). <br /> <br />. The Model 2D ducl nozzle, Pert No. 55103B, Ise lwo (2) <br />f1Dw nozzle. A single 2D nDzzle IB capable of prD(ecllng <br />square or reclBn9ular ducts wllh a maximum perimeter Df <br />. 100 in. (254 em), wllh the diagonal beIng a maximum of <br />. 37318 in. (94.9 cm). II can also protect a rDund duct wilh a <br />maximum diameler of 31 7/8 In. (B1 cm). <br /> <br />When two (2)' 20 duct nozzles are usad 10 protact a single <br />duel. Ihe cross secllonal aree of lhe ducl must be divldad <br />Inlo lwo equal symmelrlcal areas. The nDzzle must than be <br />Installad on Ihe centerline of Il1e area Il protects and aimed <br />directly Into the ducl opening. <br /> <br />The nozzle(li) must be Installed on the centerline of lhe duct, <br />wllh the tip located 0 10 6 In. (15.2 cm) Into the opening, and <br />aImed dlreclly Into the duct openIng. See FIgure 3-10. <br /> <br />.. In Installations where a UL IIsled damper assembly is <br />employed, the duct nozzle can be Installed beyond the 6 ill. <br />(15.2 cm) maximum, (0 a point just beyond (he damper <br />a8Bembly thaI will not Interfere wllh (he damper. ExceedIng <br />tha mexlmum Df 6 Ill. (15.2 cm) In this way will not vDld (he <br />.. UL IIsllng of tha SYBtem. <br /> <br />.. <br /> <br /> <br />0-6 IN. <br />INTO DUCT <br /> <br />IL OR 20 <br />NOULE <br /> <br />~--~--I3l <br />L l::j ...",pc <br />;<-- 112 L <br />L <br /> <br />Figure 3-1 a. <br /> <br />PN551274(3) <br /> <br />ULEX 3830 <br />August 1, 2005 <br />