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Detector Replacement Requirements (Continued) COOKING APPLIANCES If the cooking appliance is located under an exhaust duct where a detector has been mounted, it is normally not necessary to utilize another detector for that cooking appliance, provided the detector ~ is not more than 12 in. (30 cm) into the duct. See FlQure 91. . . ., I I APPl..IANCE REQWlES SEFl\RlU'E DETECTOR APPLIANCE APPLIANCE COVERED BY COVERED BY DETECTOR DETECTOR UNDER DUCT UNDER DUCT APPlIANCE REQUIRES SEFl\RlU'E DETECTOR . FIGURE 91 000260 ~ Each cooking appliance with a continuous cooking surlace not exceeding 48 in. x 48 in. (122 x 122 cm) can be protected by a min- imum of one detector. Cooking appliances with a continuous cook- ing surface exceeding 48 in. x 48 in. can be protected by at least one detector per 48 in. x 48 in. cooking area. Detectors used for cooking appliances must be located within the perimeter of the protected appliance toward the exhaust duct side of the appliance. The detector should be located in the air stream of the appliance to enhance system response time. Detection Una Requirements CONDUIT Rigid conduit or 1/2 inch EMT thin-wall conduit may be used. Standard steel conduit fittings (compression type are recommend- ed) must be employed to properly install the detection system. All conduit or pipe must be firmly supported. When using pipe, make certain that all ends are carefully reamed, deburred and blown clear of chips and scale before assembly. NOTICE The conduit offset can be used at the top or bot- tom of the regulated release to change di'ection of the conduit. The conduit offset cannot be used with pulley tees. All other changes in direc- tion must be made by using Ansul approved pul- ley elbows, Part No. 423254 or 415670. See Figure 92. ~ SECTION IV - SYSTEM DESIGN UL EX. 3470 ULC CEx747 Page 4-51 10-1-02 REV. 2 tEE o Q () FIGURE 92 llOCl271l Fusible Link SelectIon When possible, temperature readings should be taken at each detector location to determine correct fusible link temperature rat- ing. Temperature can be recorded using either a maxilOOm regis- tering thermometer, Part No. 15240, temperature tape or any other accurate thermometer. ~ ooo171l TEMPERA1\lAE RJmNG STAMPED ON FUSIBLE LINK BODY ~ 000171 K STYLE ML STYLE 500 OF (260 'C) ONLY ~ FIGURE 93 Select correct UL Listed fusible Iink(s) for installation in detector(s) according to the temperature condition chart below: Temperature To Be Used Where Rating Temperature Does (See Figure 79) Not Exceed 165 OF (74 OC) 100 OF (38 OC) 212 OF (100 OC) 150 OF (66 "C) 280 OF (138 OC) 225 OF (107 DC) 360 OF (182 OC) 290 OF (143 DC) 450 OF (232 OC) 360 OF (182 oC) 500 OF (260 OC) 400 OF (204 DC) ~ Fusible Link Part No. 415739 415740 415741 415742 415743 56816