DETECTORS
The detector consists of three basic components: the bracket,
linkage, 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.
The scissor style detector allows the wire rope to be strung com-
pletely through the detection system conduit and brackets first
and the detector linkage assemblies are then clipped on later.
The detector consists of two types of assemblies:
The Terminal Detector (Part No. 435546) includes a test link
and is placed last in a series of detectors. This detector is some-
times referred to as the end-of-line detector and is thus named
because it is at the point at which the wire rope “terminates,” or
is anchored at the detector bracket. Only one terminal detector
is required per detection system.
The Series Detector (Part No. 435547) is any detector located
in-line between the regulated release assembly and the terminal
detector.
When using Part No. 435546 and 435547 detectors, a total of
15 detectors can be in one detection system: 14 series detectors
(Part No. 435547) and 1 terminal detector (Part No. 435546).
Note 1: Series Detector (Part No. 435547) is also available as
Part No. 435548, 25/Pkg.
Note 2: Scissor-style linkage is also available in a 10-Pack (Part
No. 439515).
FIGURE 3-23
000159
PULLEY ELBOWS
There are two types of pulley elbows used to change the
direction of the wire rope by 90°. ANSUL recommends for tem-
peratures 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 compression 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
FIGURE 3-24
000160/000161
PULLEY TEE
The Pulley Tee (Part No. 427929) is used to change the direc-
tion of two wire ropes by 90°. It must be used in areas where
the temperatures are within the range of 32 °F to 130 °F (0 °C
to 54 °C). 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.
FIGURE 3-25
000447
ANSUL STAINLESS STEEL CABLE
The 1/16 in. stainless steel cable is run from the terminal detec-
tor, through conduit, all series detectors and pulley elbows,
and into the regulated release mechanism trip lever. When any
fusible link separates, the tension on the cable is relaxed, and
the trip lever actuates the regulated release mechanism. The
cable can also be used for mechanical gas valves and remote
manual pull stations. The cable is available in 50 ft (15.2 m)
(Part No. 15821) and 500 ft (152.4 m) (Part No. 79653) lengths.
The ANSUL stainless steel cable contains a blue tracer cable.
SECTION 3 – SYSTEM COMPONENTS
UL EX3470 ULC EX3470
PAGE 3-8 REV. 11 2014-SEP-01
R-102 Restaurant Fire Suppression Manual
FUSIBLE
LINK
BRACKET
LINKAGE
Summary of Contents for R-102
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