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. R-102Reataunan Fire Suppression Manual SECTION 4-SYSTEM DESIGN ULEX347U ULCEX347O 2014-GEP'01 REV. 11 PAQE4-57 OVERLAPPING NOZZLE COVERAGE (Continued) Overlapping Coverage-Option 2 General Design Limitations For each group of protected appliances under o common ^ If overlapping appliance pm1ooUon is mixed with dedi' hood(a). the overlapping nozzles must be located from right mtod appliance protection on the same pipe system, THE to left oo that each end nozzle io located u maximum nf11.5 OVERLAPPING APPLIANCE PROTECTION PIPING in. (292 mm) inside the outside edge of the cooking hazard of REQUIREMENTS MUST BE FOLLOWED. each end appliance,and the inside overlapping nozzles must be ^ Overlapping protection requires the use o! 3.Ogal (11.4 U located between the two end nozzles o1u maximum spacing of tank(o) and a maximum of six flows per tank. 25.5 in. (647 mm). ^ In installations using tanks only intended for overlapping Hazard Zone pmtoction, a single Double Tank nitrogen expellant goo The hazard zone iu defined oeo theoretical,flat and level, mct- cartridge can be utilized with up\o three 8.0 gal(11.4L)tanks. angular surface, that includes all of the cooking hazards of the ^ In installations using both overlapping protection and oonven' pm1ectedapp|ianooaundoraoommonhood(a).ThePuqPoaoof Uona| non-overlapping protection (ax. hood/duct urdedicated the hazard zone in0o provide a means cd locating the appliances appliance pntecUon).a single Double Tank nitrogen expellant and the overlapping nocz|oo, am well eo aiming the overlapping gas cartridge can be utilized with upho three 3.Ogal (11.4 U nozzles. The hazard zone measures 28in. (711 mm) deep by tanks, aa long aa none of the 3.0 gal (11.4U tanks exceed a the length of the cooking hozurd(a).The centerline of the hazard total flow output of more than six flows. zone must bisect the 28 in. (T11 mm) depth (from front toback) K ` more than a�Mvw�owiUbeuoodinuonnvun¢iuna|non-over- and mnfmmhgh��'\e�forthoh/Ux�dUnufthehezandzone. lapping tank, it cannot ohona the emmo cartridge as tanks Overlapping Nozzle Appliance Protection intended for overlapping protection. |n this case,unadditional Regulated Actuator Assembly with another expellant gas Overlapping Nozzle Appliance Protection is defined as pmt»n' cartridge will bm required. 8on of cooking appliances by nozzles spaced uniformly at uniform elevations under a common hood(n). Overlapping ^ ' protection of appliances is continuous for the full length of the . The 200 nozzle must be used for zone protection. hood or divided when group(s) of protected appliances are . Maximum depth od zone iu28 in. (711 mm). separated by counters nr appliances not requiring protection. ^ Refer to overlapping nye1om piping requirements listed in Full hood continuous protection is defined as overlapping Table 4'2 nozzle appliance protection �hed covers appliance line-up |omgad under the total hood length. All appliances requiring ^ Nozzle must be located 0 in. to 12 in. (0 mm to 304 mm) protection are the appliances under the hood that can beon forward of zone centerline, aimed back at the zone centerline. ignition source of grease|n the hood, grease removal device or . Nozzles must be spaced a maximum of 11.5 in. (292 mm) the duct. from each end of hazard and then a maximum ni25.b in.(G47 Group protection is defined as overlapping nozzle appliance mm) on center for the remaining overlapping nozzles until the protection that protects individual hazard zones located under o complete hazard iacovered. common hood.These^gmupo"of appliances may boseparated . For appliance hazard surfaces with listed protection exceed- by opp|ionceunutrnquiringpntection.ouohaastoam*quipmon1 ing the standard hazard zone ud28 in. (711 mm) in depth,the or work tab|oa, or by dedicated appliance pnt»obun, such as hazard surface(s) must be aligned with the back edge cdthe salamander broilers. hazard zonn, with the front edge overhanging the front edge See Figure 4-11S (full hood continuous protection) and Figure of the zone.See Appliance Chart,Table 4-1. 4'117(multiple group pnotooiion). , For appliance hazard surfaces that exceed the listed protec- tion aizno. mu|tip|eznneomustbeuti|bed.Alignon1inehazund Dedicated Nozzle Appliance Protection surface area within the multiple zones. Appliance protection using dedicated nozzle coverage iadefined . All hood,duct,and individual appliance protection are aaspec- as protection of cooking appliances with enclosed cooking i8mdinthe R'1O2Design, Installation, Recharge and yNointnn' haza»da, such as upright bm||aro, which cannot be protected onoo Manual(Part No.418O87). with overlapping nozzles and therefore must be protected with nozzles dedicated to the appliance. ^ All appliance protection nuneu||y listed in the R'102 Design Manual (Part No. 418O87) io also approved protection. Zone protection can be considered optional protection.