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i <br /> SECTION IV — SYSTEM DESIGN � <br /> UL EX3470 ULC EX3470 Page 4-16 <br /> REV.7 7-1-09 <br /> ►Range Protection 1 N(1-Flow)Nozzle—Low Proximfty ►Range Protection Two(2)290(2-Flow)Noules—Low <br /> Application I Proximity Application <br /> 15 in.to 20 in.(38.1 cm to 50.8 cmj above the cooking surtace. t 15 in.to 20 in.(38 cm to 51 cm)above the cooking surface. <br /> The low proximiry 1-flow nozzle application for the protection of The low proximiry 2-flow application requires the use of two(2)290 <br /> ranges requires the 1 N nozzle, Part No.419335. noules,Part No.419342. <br /> The nozzle tip is stamped with 1 N indicati�g that it is a one-flow ►Both nozzle tips are stamped with 290 indicating they are two flow <br /> nozzle and must be counted as one (1)flow number, nozzles and must be counted together for a total of four (4) fiow <br /> When using the 1 N nozzle for low proximity range protection with numbers. <br /> or without obstruction, the maximum length of the burner grates Two (2) 290 nozzles will protect a cooking area of 1008 in.2 <br /> being protected must not be exceed 24 in.(61.0 cm)length,aimed ►(6503 cm2)with a maximum dimension of 36 in.(91 cm). <br /> along a centerline to a point 20 in.(50.8 cm)from the end of the <br /> length,protecting a maximum width of 18 in.(45.7 cm). When using iwo of these noules for low proximity range protec- <br /> When protecting a range,the 1 N nozzle must be located a maxi- pe im ter t Z1!5Sinm(3 8 cm�side the perimeter, and�almed at a <br /> mum of 9 in.(22.9 cm)from each burner grate centerline and must 45° angle along the longitudinal centerline of the range. See <br /> be positioned above the edge of the hazard area to be protected. ►Figures 35 and 36. <br /> The 1 N nozzle tip must be positioned at or below the obstruction, 290 NOZZLE TIP <br /> if present. The protected area begins at the point straight down � LOCATION 0-1.5 IN. 'y <br /> (0-3.8 cm) <br /> rom the nozzle tip.The nozzle can be placed at the side of the IN FROM EDGE OF <br /> range aimed either left or right, or can be placed in the front or 45� COOKINd SURFACE 45. <br /> back of the range. See Figures 33 and 34 for nozzie location � <br /> details. � � � � <br /> 15 IN.TO 20 IN. I I ' � 15 IN.TO 20 IN. <br /> (38 to 51 cm) I I � � (3B to 51 cm) <br /> MAXIMUM i I MAXIMUM <br /> •`\ 1 � <br /> �� �_' ! I <br /> � <br /> � <br /> ;���.� � o 0 0 0 0 0 <br /> 15-20 IN. � \ � AIM <br /> (38-51 cm)� \ � POINT ► <br /> i 2a iN.�. � FIGURE 35 <br /> f—(51 cm)�'"'�I I aozae <br /> COOKING LON(31TUDINAL <br /> AREA —� CENTERLINE <br /> � � � Q <br /> a�szi � <br /> FIGURE 33 <br /> COOKING <br /> PROTECTED AREA � AREA <br /> i <br /> � <br /> 9 IN. <br /> (��) <br /> -- �g�N 290 NOZZLE TIP <br /> (qg�) ; -+ LOCATION CENTER OF <br /> \ COOKINl3 SURFACE <br /> :2 IN.(5 cm) <br /> 290 NOZZLE TIP LOCATION <br /> 0-1.5 IN.(3.B cm)IN FROM EDOE 000x� <br /> � OF COOKINQ SURFACE <br /> � <br /> I <br /> AI POIN COOKING I <br /> 201N. AREA —� I <br /> (57 cm)-- <br /> 24 IN. 0002�0 <br /> (61 an) <br /> FIGURE 34 COOKING <br /> � AREA <br /> - - —'_'rt <br /> 290 NOZZLE TIP <br /> R � 'y LOCATION CENTER OF <br /> \ COOKINO SURFACE <br /> 280 NOZZLE TIP LOCATION =Z�N.(5 cm) <br /> 0-1.5 IN.(3.8 cm)IN FROM EDOE <br /> ► OF COOKIN�SURFACE FIGURE 36 <br />