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SECTION III - SYSTEM COMPONENTS UL EX. 5174 8-1-99 Page 3-6 REV. 1 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 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 two styles of detectors available: the hinged style, and the scissor style. 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 installed later. Each style of detector consists of two types of assemblies: The Terminal Detector (Part No. 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-line detector and is thus named because it is at the point at which the wire rope "termi- nates," or is anchored at the detector bracket. Only one terminal detector is required per detection system. The Series Detector (Part No. 15373, or 417369) is any detector located in-line between the regulated release assembly and the terminal detector, 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. HINGED STYLE - PART NO. 15373 AND 15375 LINKAGE o SCISSOR STYLE - PART NO. 417368 AND 417369 BRACKET / FUSI BLE LINK . FIGURE 19 FUSIBLE LINK Select correct UL Listed fusible link(s) for installation in detector(s) according to the temperature condition chart below: To Be Used Where Temperature Does Not Exceed ------------- 100 OF (38 0c) 1500 F (660 C) 2250 F (1070 C) 290 OF (143 0c) 360 OF (182 OC) 400 OF (204 OC) Fusible Link Part No. --------- 415739 415740 415741 415742 415743 56816 Temperature !3~.!i.!:lJL___ 165 OF (74 0c) 2120 F (1000 C) 280 OF (1380 C) 360 OF (182 OC) 450 OF (232 OC) 500 OF (260 0c) (Q) ~ ~5U\.. S~ ~~~ a TEMPERATURE RATING STAMPED ON FUSIBLE LINK BODY ~ K STYLE 000170 ML STYLE 500 'F (260 .c) ONLY 000171 . FIGURE 20 PULLEY ELBOWS There are two types of pulley elbows used to change the direction of the wire rope by 900. Ansul recommends for temperatures not in excess of 700 OF (371 0c). 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 fP ~ 000158 000160 000161 . FIGURE 21 000159 PUllEY TEE The Pulley Tee (Part No. 15342) is used to change the direction of two wire ropes by 900. It must be used in areas where the tem- peratures are within the range of 32 OF to 130 OF (0 oC to 54 0c). Pulley tees can be used in mechanical gas valve actuation lines and remote manual pull station lines. Pulley tees cannot be used within a detection line. Pulley tees can only be used to operate one gas valve from two ANSUL AUTOMAN Releases. ) . FIGURE 22 000162