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R-102 Restaurant Fire Suppression Manual SECTION 4—SYSTEM DESIGN <br /> UL EX3470 ULC EX3470 <br /> 2014-SEP-01 REV. 11 PAGE 4-13 <br /> Range Protection - ' <br /> The R-102 system uses five different nozzles for the protection <br /> of ranges.Two of the design options require a one-flow nozzle io IN. <br /> and three of the design options require two-flow nozzles. (254 mm) <br /> MAXIMUM <br /> NOTICE 32 w. <br /> (812 mm) <br /> i <br /> A 13 in. (330 mm) diameter wok pan is the iN MAXIMUM <br /> largest wok size that can be protected on NOZZLE--' <br /> ranges. AIMING POINT <br /> When protecting hot top ranges, the entire <br /> cooking surface must be protected. <br /> 10 IN. <br /> (254 mm) <br /> MAXIMUM <br /> Range Protection 1N(1-Flow) Nozzle—High Proximity MIMI 006540 <br /> Application FIGURE 4-28 <br /> No Obstructions • <br /> Single and multiple burner ranges can be protected using a 1N <br /> nozzle. The nozzle is stamped with 1N, indicating that this is a <br /> one-flow nozzle and must be counted as one flow number. <br /> When using this nozzle for range protection, the maximum <br /> length of the burner grates being protected with a single nozzle <br /> . must not exceed 32 in. (812 mm)and the maximum area of the <br /> burner grates must not exceed 384 in.2(24774 mm2)per nozzle. <br /> When protecting a range, the 1N nozzle must be located a • <br /> maximum of 10 in. (254 mm) from each burner grate centerline <br /> and must be aimed at the center of the cooking surface. See <br /> Figures 4-27 and 4-28. <br /> 4 \ <br /> 401N. \ 4ti <br /> \1- <br /> (1016 mm) t .. <br /> • <br /> 30 IN. / <br /> (762 mm) \ <br /> • <br /> • <br /> 006539 <br /> FIGURE 4-27 <br /> • <br />