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DETECTORS 1he detector consists of three basic components: the bracket, link- age, and fusible link. (Fusible links are not included and must be ordered separately.) The bracket holds the entire assembly to the mounting surface. The linkage is used to support the fusible link. The fusible link is designed to separate at a specific temperature and release the wire rope, thereby actuating the regulated release mechanism. There are three styles of detectors available: the clip-on style, the hinged style, and the scissor style. The clip-on style allows the wire rope to be strung completely through the detection system conduit and brackets first and the detector linkage assemblies are then clipped on later. The hinged style detector requires the wire rope to be strung to the detector bracket, and then "threaded" through the linkage assem- bly before continuing to the next detector bracket. The scissor style allows the wire rope to be strung completely through the detection system conduit and brackets first and the detector linkage assemblies are then clipped on later. Each style of detector consists of two types of assemblies: The Terminal Detector (Part No. 56838, 15375, or 417368) includes a test link and is placed last in a series of detectors. This detector is sometimes referred to as the end-of-Iine detector and is thus named because it is at the point at which the wire rope "ter- minates," or is anchored at the detector bracket. Only one termi- nal detector is required per detection system. The Series Detector (Part No. 56837, 15373, or 417369) is any detector located in-line between the regulated release assembly and the terminal detector. When using Part No. 56837 and 56838 style detectors, a total of 12 detectors can be in one detection system: 11 series detectors, Part No. 56837 and 1 terminal detector, Part No. 56838. When using Part No. 15373 and 15375 style detectors, a total of 5 detectors can be in one detection system: 4 series detectors, Part No. 15373 and 1 terminal detector, Part No. 15375. When using Part No. 417368 and 417369 style detectors, a total of 15 detectors can be in one detection system: 14 series detec- tors, Part No. 417369 and 1 terminal detector, Part No. 417368. SECTION 11I- SYSTEM COMPONENTS UL EX. 3470 ULC CEx747 Page 3-7 10-1-02 REV. 4 CLIP-DN STYLE - PART NO. 56837 AND 56838 I 000 157 HINGED STYLE - PART NO. 15373 AND 15375 o LINKAGE ~ FUSIBLE LINK BRACKET 000158 SCISSOR STYLE - PART NO. 417368 AND 417369 BRACKET / 000159 FIGURE 21 PULLEY ELBOWS There are two types of pulley elbows used to change the direction of the wire rope by 90.. Ansul recommends for temperatures not in excess of 700 .F (371 .C). Part No. 415670 has socket ends with set screws for 1/2 in. conduit, and Part No. 423250 has com- pression ring ends also for 1/2 in. conduit. Pulley elbows must be ordered in quantities of 50 as Shipping Assembly Part No. 415671 (socket end type) and Part No. 423251 (compression end type). PART NO, 415670 PART NO. 423250 f' 000160 000161 FIGURE 22