Notifier FSI-851 User Manual
Fsi-851(a), General, Features
DN-6934:B1 • 01/05/2012 — Page 1 of 2
FSI-851(A)
Intelligent Plug-In Ionization
Smoke Detector with FlashScan®
Intelligent/Addressable Devices
DN-6934:B1
General
The FSI-851(A) intelligent plug-in ion detectors with integral
communication has features that surpass conventional detec-
tors. Detector sensitivity can be programmed in the control
panel software. Sensitivity is continuously monitored and
reported to the panel. Point ID capability allows each detec-
tor’s address to be set with rotary, decimal address switches,
providing exact detector locations for selective maintenance
when chamber contamination reaches an unacceptable level.
The FSI-851(A) ionization detector incorporates a unique sin-
gle-source, dual-chamber design to respond quickly and
dependably to a broad range of fires. FSI-851(A) detectors are
compatible with ONYX series and CLIP series intelligent Fire
Alarm Control Panels (FACPs).
FlashScan® (U.S. Patent 5,539,389) is a communication pro-
tocol developed by NOTIFIER that greatly improves the speed
of communication between analog intelligent devices and cer-
tain 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 other protocols.
Features
• Sleek, low-profile design.
• Addressable-analog communication.
• Stable communication technique with noise immunity.
• Low standby current.
• Two-wire SLC connection.
• Compatible with FlashScan® and CLIP systems
• Rotary, decimal addressing (1-99 on CLIP systems, 1-159
on FlashScan systems).
• Optional remote, single-gang LED accessory, RA100Z(A).
• Dual LED design provides 360° viewing angle.
• Visible bicolor LEDs blink green every time the detector is
addressed, and illuminate steady red on alarm.
• Remote test feature from the panel.
• Walk test with address display (an address of 121 will blink
the detector LED: 12-(pause)-1) (FlashScan® systems
only).
• Built-in functional test switch activated by external magnet.
• Built-in tamper-resistant feature.
• Sealed against back pressure.
• Constructed of off-white plastic, designed to commercial
standards, and offers an attractive appearance.
• 94-5V plastic flammability rating.
• SEMS screws for wiring of the separate base.
• Optional relay, isolator, or sounder bases.
• Listed to UL 268.
Specifications
Sensitivity: 0.5% to 2.5% per foot obscuration
Size: 2.0" (51 mm) 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.
Shipping Weight: 5.4 oz. (153 g).
Operating Temperature: 0°C to 49°C (32°F to 120°F).
UL/ULC-Listed Velocity Range: ION: 0 – 1200 ft./min.
(365.76 m/min.).
Relative Humidity: 10% – 93% noncondensing.
ELECTRICAL SPECIFICATIONS
Voltage Range: 15 - 32 volts DC peak.
Standby Current (max. avg.): 300 μA
LED Current (max.): 6.5 mA @ 24 VDC (“ON”).
Installation
FSI-851(A) plug-in detectors use a separate base to simplify
installation, service, and maintenance. A special tool allows
maintenance personnel to plug in and remove detectors with-
out using a ladder.
Mount base (all base types) on an electrical backbox which is
at least 1.5" (3.81 cm) deep. For a chart of compatible junction
boxes, see DN-60054.
NOTE: 1) Because of the inherent supervision provided by the
SLC loop, end-of-line resistors are not required. Wiring “T-taps” or
branches are permitted for Style 4 (Class “B”) wiring. 2) When
using relay or sounder bases, consult the ISO-X(A) installation
sheet I56-1380 for device limitations between isolator modules
and isolator bases.
FSI-851(A) in B210LP(A) Base
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