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<br />Range Protection i-Flow Nozzle <br /> <br />The R-~ 02 system uses five different nozzles for the protection of <br />.. ranges. Two of the design options require a one-flow nozzle and <br />three of the design options require two-flow nozzles. <br /> <br />NOTICE <br />A 13 in. (33 cm) diameter wok pan is the largest <br />wok size that can be protected on ranges. <br /> <br />When protecting hot top ranges, the entire <br />cooking surface must be protected. <br /> <br />Range Protection (1-Flow Nozzle) <br /> <br />Single and multiple burner ranges can be protected using a IN <br />nozzle, Part No. 419335. The nozzle tip is stamped with IN, indi- <br />cating that this is a one-flow nozzle and must be counted as one <br />flow number. <br /> <br />When using this nozzle for range protection, the maximum length <br />of the burner grates bEling protected with a single nozzle must not <br />exceed 32 in. (81 cm) and the maximum area of the burner grates <br />must not exceed 384 sq. in. (2477 sq. cm) per nozzle. <br /> <br />When protecting a range, the 1 N nozzle must be located a maxi- <br />mum of 10 in. (25.4 cm) from each burner grate centerline and <br />must be aimed at the center of the cooking surface. See Figure 26. <br /> <br />) <br /> <br />~__~_ _J <br />\ . / <br />\ I ' <br />T~ '-T-II <br />30 IN. \\ I /1 <br />Iffl=' ~ <br /> <br /> <br /><!;. 000539 <br /> <br />40 IN. <br />(102 em) <br /> <br /> <br />10 IN. <br />(25 em) <br />MAXIMUM <br /> <br />I <br /> <br />32 IN. <br />(81 em) <br />MAXIMUM <br /> <br />AIMING <br />POINT <br /> <br />006540 <br /> <br />FIGURE 26 <br /> <br />SECTION IV - SYSTEM DESIGN <br />UL EX. 3470 ULC CEx747 Page 4-13 <br />3-1-04 REV. 5 <br /> <br />When this type of hazard is equipped with a back shelf located <br />above the range top, two protection options are available: One <br />requires a 1F nozzle, Part No. 419333, and the other option <br />requires a 260 nozzle, Part No. 419341. <br /> <br />Option 1: 1 F Nozzle: When using the 1 F nozzle for range protec- <br />tion with back shelf, the maximum length of the burner <br />grates being protected must not exceed 28 in. (71 cm) <br />and the maximum area of the burner grates must not <br />exceed 336 sq. in. (2168 sq. em). See Figure 27 for <br />nozzle location details. <br /> <br />1F NOZZLE <br /> <br />(! <br /> <br />40-48 IN. I <br />(102 - 122 em) I <br />, <br />I <br /> <br />SHELF CAN OVERHANG BURNER(S) <br />BY A MAXIMUM OF 11 IN. (28 em) <br /> <br /> <br />FRONT TO REAR <br />CENTERLINE <br /> <br />IF NOZZLE LOCATED OVER FRONT EDGE OF BURNER GRATE AND ORIENTED <br />SO NOZZLE TIP FLATS ARE PARALLEL WITH BURNER GRATE FRONT TO REAR <br />CENTERLINE AND SHALL BE AIMED AT THE CENTER OF THE COOKING SURFACE. <br /> <br />FIGURE 27 <br /> <br />000239 <br /> <br />Option 2: 260. Non;le: When using the 260 nozzle for range pro- <br />tection WIth back shelf, the maximum length of burner <br />grates being protected must not exceed 32 in. (81 cm) <br />and the maximum area of the burner grates must not <br />exceed 384 sq. in. (2477 sq. em). Nozzle must be <br />located on the front edge of the bumer grates and <br />aimed at a point 10 in. (25 em) from the back edge of <br />the burner grates. Nozzle must be mounted 30 to 40 in. <br />(76 to 102 cm) above the hazard surface. See Figure <br />28. <br />260 NOZZLE <br /> <br />~ <br />1 ! <br /> <br />30-40 IN. I <br />(76 - 102 em) I <br />, <br />I <br /> <br />SHELF CAN OVERHANG BURNER(S) <br />BY A MAXIMUM OF 11 IN. (28 em) <br /> <br />.. <br /> <br /> <br />FIGURE 28 <br />0002_ <br />