Laserfiche WebLink
0 <br />0 <br />Chapter 3 — System Design <br />Page 3-6 <br />REV. 5 <br />1H <br />50 IN. <br />(127 an) <br />iH 40 IN <br />REFERENCE <br />/ <br />POINT <br />NOZZLE <br />LOCATION <br />' AREA <br />12 IN. <br />28 IN. (71 CM) <br />(31 cm) <br />MAXIMUM <br />MAXIMUM <br />LENGTH (L) <br />WIDTH (W) <br />HIGH <br />\ <br />\ <br />PROXIMnY <br />ooeiaorc <br />Figure 3-4. <br />► The Model 1 L nozzle, Part No. 551026, is used for low proxim- <br />ity small range protection. This nozzle is a one (1) flow nozzle. <br />The range can be equipped either with or without a back - <br />shelf. Either type requires the same nozzle requirements. The <br />nozzle must be located 22 in. (56 cm) from either end of the <br />hazard area centered from left to right. It must be 13 in. to 24 <br />in. (33 to 61 cm) above cooking surface, and aimed at a point <br />one half the distance of whatever the height dimension of the <br />nozzle is. When determining nozzle and aim point locations, <br />both measurements are to be taken from the same end of the <br />hazard area. Example: The nozzle is mounted 20 in. (51 cm) <br />above the cooking surface. The aim point from the edge of the <br />hazard would then be 10 in. (25 cm) which is one half the <br />► nozzle mounting height dimension. See Figure 3-4a. Note: <br />Nozzles must be placed at or below the shelf, within the nozzle <br />height limitations. <br />EDGE OF <br />HAZARD AREA <br />(FRONT OR BACK) <br />\ I / <br />22 IN. <br />(56 erne) 1 L <br />22 IN. / I \ <br />(56 cm) <br />\ I / <br />1 L 24 IN. (H) <br />(61 cm) <br />—\ X <br />I� <br />13IN. (H) <br />(33 cm> <br />♦ <br />S <br />I (H) <br />AZARD oo6ieiPc <br />1/2 (H) H <br />SURFACE <br />' Figure <br />3-4a. <br />ULEX 3830 <br />December 1, 2009 <br />2a. High -Proximity Lackshelf Protection — When using the <br />2L nozzle for range protection with high -proximity backshelf, <br />the maximum length of burners being protected must not <br />exceed 28 in. (71 cm) and the maximum area of the burners <br />must not exceed 336 sq in. (2167 sq cm). The backshelf must <br />be a minimum of 18 in. (45.7 cm) above the top of the range <br />and may overhang the burner by a maximum of 11 in. (28 cm). <br />Note: Although most shelves exceed 11 in. (28 cm) in overall <br />depth, make sure the shelf does not exceed i 1 in. (28 cm) <br />overhang of the burner. <br />Nozzle must be located on the front edge of the front burner <br />and aimed at a point 10 in. (25 cm) forward from the back <br />edge of the back burner on the front -to -rear centerline. Nozzle <br />must be mounted 24 to 35 in. (61 — 89 cm) above the hazard <br />► surface. See Figure 3-41b. <br />SHELF CAN OVERHANG BURNERS) <br />A MAXIMUM OF 11 IN. (28 cm) <br />I \ <br />18 IN. <br />\ {45.7 cm) <br />MIN. <br />MAX. 28 IN. <br />24351N. (71 an <br />(s1-sscm) <br />/ 10 IN. (25.4 cm) <br />FROM BACK <br />BURNER <br />FRONT TO REAR 0D6 <br />CENTERLINE <br />HIGH PROXIMITY BACK SHELF PROTECTION WITH THE 2L NOZZLE. <br />AREA OF PROTECTION PER NOZZLE: MAX. LENGTH OF BURNER <br />GRATES 28 IN. (71 cm) AND MAX. AREA OF BURNER GRATES NOT <br />TO EXCEED 336 SO IN. (2168 sq an) <br />' Figure 3-4b. <br />% <br />-.r' <br />