Notifier FSI-851 User Manual

Fsi-851(a), General, Features

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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

B21

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