Notifier FST-851 - Manual

DN-6936:B • 12/07/2011 — Page 1 of 2
FST-851(A) Series
Intelligent Thermal (Heat) Detectors
with FlashScan®
Intelligent / Addressable Devices
DN-6936:B • H-211
General
Notifier FST-851(A) Series intelligent plug-in thermal detectors
with integral communication has features that surpass conven-
tional detectors. Point ID capability allows each detector’s
address to be set with rotary, decimal address switches, pro-
viding exact detector locations. FST-851(A) Series thermal
detectors use an innovative thermistor sensing circuit to pro-
duce 135°F/57°C fixed-temperature (FST-851/A) and rate-of-
rise thermal detection (FST-851R/A) in a low-profile package.
FST-851H(A) provides fixed high-temperature detection at
190°F/88°C. These thermal detectors provide effective, intelli-
gent property protection in a variety of applications. FST-
851(A) Series detectors are compatible with Notifier Onyx and
CLIP series Fire Alarm Control Panels (FACPs).
FlashScan® (U.S. Patent 5,539,389) is a communication pro-
tocol developed by Notifier Engineering that greatly enhances
the speed of communication between analog intelligent
devices and certain NOTIFIER systems. Intelligent devices
communicate in a grouped fashion. If one of the devices within
the group has new information, the panel’s CPU stops the
group poll and concentrates on single points. The net effect is
response speed greater than five times that of earlier designs.
Features
• Sleek, low-profile, stylish design.
• State-of-the-art thermistor technology for fast response.
• Rate-of-rise model (FST-851R/A), 15°F (8.3°C) per minute.
• Factory preset fixed temperature at 135°F (57°C); high-tem-
perature model fixed at 190°F (88°C).
• Addressable by device.
• Compatible with FlashScan® and CLIP protocol systems.
• Rotary, decimal addressing (1-99 on CLIP systems, 1-159
on FlashScan systems).
• Two-wire SLC connection.
• Visible LEDs “blink” every time the unit is addressed.
• 360°-field viewing angle of the visual alarm indicators (two
bi-color LEDs). LEDs blink green in Normal condition and
turn on steady red in Alarm.
• Integral communications and built-in device-type identifica-
tion.
• Remote test feature from the panel.
• Built-in functional test switch activated by external magnet.
• Walk test with address display (an address of 121 will blink
the detector LED 12-(pause)-1).
• Low standby current.
• Backward-compatible.
• Built-in tamper-resistant feature.
• Designed for direct-surface or electrical-box mounting.
• Sealed against back pressure.
• Plugs into separate base for ease of installation and main-
tenance. Separate base allows interchange of photoelec-
tric, ionization and thermal sensors.
• SEMS screws for wiring of the separate base.
• Constructed of off-white fire-resistant plastic, designed to
commercial standards, and offers an attractive appearance.
• 94-5V plastic flammability rating.
• Remote LED output connection to optional RA100Z(A)
remote LED annunciator.
• Optional sounder, relay, and isolator bases.
• Optional flanced surface mounting kit.
Specifications
Size: 2.1" (5.3 cm) high; base determines diameter.
– B210LP(A): 6.1" (15.5 cm) diameter.
– B501(A): 4.1" (10.4 cm) diameter.
– B200S(A): 6.875" (17.46 cm) diameter.
– B200SR(A): 6.875" (17.46 cm) diameter.
– B224RB(A): 6.2" (15.748 cm) diameter.
– B224BI(A): 6.2" (15.748 cm) diameter.
Shipping weight: 4.8 oz. (137 g).
Operating temperature range: FST-851(A) Series, FST-
851R(A): –20°C to 38°C (–4°F to 100°F); FST-851H(A): –20°C
to 66°C (–4°F to 150°F).
Detector spacing: UL approved for 50 ft. (15.24 m) center to
center. FM approved for 25 x 25 ft. (7.62 x 7.62 m) spacing.
Relative humidity: 10% – 93% noncondensing.
Thermal ratings: fixed-temperature setpoint 135°F (57°C),
rate-of-rise detection 15°F (8.3°C) per minute, high tempera-
ture heat 190°F (88°C).
ELECTRICAL SPECIFICATIONS
Voltage range: 15 - 32 volts DC peak.
Standby current (max. avg.): 300 μA @ 24 VDC (one com-
munication every 5 seconds with LED enabled).
LED current (max.): 6.5 mA @ 24 VDC (“ON”).
Applications
Use thermal detectors for protection of property. For further
information, go to systemsensor.com for manual I56-407-00,
Applications Manual for System Smoke Detectors, which pro-
vides detailed information on detector spacing, placement,
zoning, wiring, and special applications.
FST-851(A) in B210LP(A) Base B2
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