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SECTlON !V— SYSTEM DESIGN <br /> UL EX. 5174 6-5-98 Page 4-2 <br /> REV 1 <br /> APPLIANCE PROTECTION <br /> Per NFPA 96, "Cooking equipment (such as deep fat fryers, ► 2. The overlapping high proximity appliance nozzles must be <br /> ranges, griddies, and broilers)that might be a source of ignition of located 40 in. to 48 in. above the top surface of the protected <br /> grease in the hood, grease removal device, or duct shall be pro- � appliances. See Figure 2a. Exception No. 1• Nozzle dimen- <br /> tected by approveci extinguishing equipment." sions for wok protection are measured to bottom of wok. <br /> Cooking appliances tested and approved include fryers, griddles, ' Exception No. 2:When using overlapping high proximity <br /> ranges, broilers, woks, tilt skillets and tilt braising pans The appliance nozztes in areas where there is a back shelf, the <br /> PIRANHA system provides two types of appliance protection nozzle cannot be positioned in the shaded area as shown in <br /> overlapping and dedicated appiiance protection. Following is a list Figure 2. Also, back shelf must not extend more than 11 in <br /> of cooking appliances,along with their maximum cooking hazards, ' over the hazard zone or be less than 20 in. above the hazard <br /> which can be protected with overlapping nozzle coverages. zone. See Figure 2. <br /> OVERLAPPING NOZZLE(S� <br /> ►Overlapping Nozzle Coverage—High Proximity 48 �NANHIOS SHADEOD ROAED <br /> Appliance Type Maximum Cooking Hazard 44 <br /> Fryer 34 in. Deep x 5.8 sq ft. ao <br /> is iz � I <br /> Grill 36 in. Deep x Unlimited Length <br /> Range 32 in. Deep x Unlimited Length 4 iN IN. <br /> Wok, Maximum 30 in. Diameter x 5 in. Deep MAx� <br /> Wok, Minimum 11 in Diameter x 3 in. Deep � I <br /> Braising Pan�ft Skillet� 34 in. Deep x Unlimited Length � � <br /> Lava Rock Char-Broiler 32 in. Deep x Unlimited Length <br /> Charcoai Broiler 32 in. Deep x Unlimited Length 2o iN. <br /> (4 in. Maximum Fuel Depth) � MINIMUM <br /> Mesquite Wood Broiler 32 in. Deep x Unlimited Length � <br /> (12 in. Maximum Fuel Depth) � <br /> 'Gas Radiant Char-Broiler 36 in. Deep x Unlimited Length <br /> �Electric Char-Broiler 36 in Deep x Unlimited Length � CENTER LINE OF <br /> HAZARD ZONE <br /> `See Figure 1 for nozzle Iocation <br /> FIGURE 2 <br /> oo,�ee <br /> , � ► 3 The overlapping high proximity appliance nozzles must be <br /> ,���� located 4 in. to 16 in.forward of the centerline of the selected <br /> COVER MUST NOT �' ' ' hazard zone. See Figure 2a. <br /> INTERFERE WITH i / I <br /> EDGE OF � � <br /> DISCHARGE / I <br /> PATTERN ,�� � � � NOZZLE <br /> 1 <br /> / / � T— <br /> i <br /> / / / / i ��— <br /> �' / I <br /> � I <br /> I <br /> i � � <br /> 4 IN. <br /> MIN. 481N NOZZLE <br /> � CENTERLINE OF �Q IN MUST BE <br /> HAZARD ZONE AIMED <br /> BACK AT <br /> CENTERLINE <br /> OF HAZARD <br /> THE NOZZLE IS TO 8E PLACED TOWARD THE rRONT OF THE APPLI- ZONE <br /> ANCE TO MINIMIZE THE POTENTIAL FOR THE SKILLET OR BRAISING PAN 16 IN. <br /> COVER TO WTERF�RE WITH THE NOZZLE DISCHARGE. MAX. <br /> � <br /> FIGURE 1 <br /> 000m, <br /> 'Overlapping Appliance Nozzle and Hazard Zone Locations— cENTeRUNE oF <br /> 32 IN. HAZAFID ZONE <br /> High Proximity � ZONE <br /> ' 1 All overlapping high proximity appliance nozzles must be the FIGURE 2a <br /> "AP" nozzle, Part No 423480, and must be located under a ;,o,�„ <br /> common hood at the same height above the hazard zone, in <br /> a straight line from right to left and aimed at the centerline of <br /> the hazard zone (See Installation Section for detailed aiming <br /> instructions)The overlapping nozzle is used for both continu- <br /> ous overlapping and multiple group overlapping protection <br />