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SECTION III – SYSTEM COMPONENTS UL EX. 3470 ULC CEx747 Page 3 -7 . 10 -1 -02 REV.4 CLIP -ON STYLE - PART NO. 56837 AND 56838 i DETECTORS The 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 FUSIBLE LINKAGE I ' mounting surface. The linkage is used to support the fusible link. LINK BRACKET The fusible link is designed to separate at a specific temperature ...... and release the wire rope, thereby actuating the regulated release mechanism. —71. 000157 f There are three styles of detectors available: the clip -on style, the HINGED STYLE - PART N0.15373 AND 15375 hinged style, and the scissor style. The clip -on style allows the wire rope to be strung completely Q' 1 through the detection system conduit and brackets first and the L INKAGE detector linkage assemblies are then clipped on later. FUSI LINK BRACKET The hinged style detector requires the wire rope to be strung to the detector bracket, and then "threaded" through the linkage assem- 1 bly before continuing to the next detector bracket. m re 1.....4 The scissor style allows the wire rope to be strung completely 000158 through the detection system conduit and brackets first and the SCISSOR STYLE -PART N0.417368 AND 417369 1 detector linkage assemblies are then clipped on later. BRACKET Each style of detector consists of two types of assemblies: / The Terminal Detector (Part No. 56838, 15375, or 417368) LINKAGE 0 f includes a test link and is placed last in a series of detectors. This Il detector is sometimes referred to as the end -of -line detector and is thus named because it is at the point at which the wire rope "ter- FUSIBLE U minates," or is anchored at the detector bracket. Only one terminal LINK detector is required per detection system. I 000159 The Series Detector (Part No. 56837, 15373, or 417369) is any FIGURE 21 detector located in -line between the regulated release assembly and the terminal detector. PULLEY ELBOWS I When using Part No. 56837 and 56838 style detectors, a total of There are two types of pulley elbows used to change the direction 12 detectors can be in one detection system: 11 series detectors, of the wire rope by 90 °. Ansul recommends for temperatures not in Part No. 56837 and 1 terminal detector, Part No. 56838. excess of 700 °F (371 °C). Part No. 415670 has socket ends with When using Part No. 15373 and 15375 style detectors, a total of 5 set screws for 1/2 in. conduit, and Part No. 423250 has compres- 1 detectors can be in one detection system: 4 series detectors, Part sion ring ends also for 1/2 in. conduit. Pulley elbows must be No. 15373 and 1 terminal detector, Part No. 15375. ordered in quantities of 50 as Shipping Assembly Part No. 415671 When using Part No. 417368 and 417369 style detectors, a total (socket end type) and Part No. 423251 (compression end type). of 15 detectors can be in one detection system: 14 series detec- No. 415670 PART NO. 423250 tors, Part No. 417369. and 1 terminal detector, Part No. 417368. , la 1111 O� I ' I (;) ® : _ All, 1 1 000160 000161 FIGURE 22 • 1 1 1