D400-01-01 1 I56-278-05
INSTALLATION AND MAINTENANCE INSTRUCTIONS
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
Before installing
Please thoroughly read the System Sensor manual I56-407,
Applications Manual for System Smoke Detectors, which
provides detailed information on detector spacing, place-
ment, zoning, wiring, and special applications. Copies of
this manual are available at no charge from System Sensor.
(For installation in Canada refer to CAN/ULC-S524, Stan-
dard for the Installation of Fire Alarm Systems, and CEC
Part 1, Sec. 32.)
NOTICE: This manual should be left with the owner/user
of this equipment.
IMPORTANT: This sensor must be tested and maintained
regularly following NFPA 72 requirements. This sensor
should be cleaned at least once a year.
General Description
Model 1451 dual chamber ionization detectors utilize state-of-
the-art, unipolar sensing chambers. These detectors are de-
signed to provide open area protection, and to be used with
compatible UL-listed control panels only. The capability of
plugging these detectors into a variety of special bases makes
them more versatile than equivalent direct-wired models.
Two LEDs on each detector light to provide a local 360° vis-
ible alarm indication. Remote LED annunciator capability
is available as an optional accessory. These detectors also
have the latching alarm feature. The alarm can be reset
only by a momentary power interruption. For testing, these
detectors have an internal magnetically activated reed
switch.
1451 Plug-in Ionization
Smoke Detector
Specifications
Size
Height: 2.4 inches (6.1 cm)
Diameter: 4.0 inches (10.1 cm)
Weight: 0.6 lb. (277 g)
Operating Temperature Range: 0° to +49°C (32° to 120°F)
Operating Humidity Range: 10% to 93% Relative Humidity Non-condensing
Latching Alarm: Reset by momentary power interruption.
Model 1451 has been approved for marine use in dry loca-
tions by Underwriters Laboratory, Inc. The detector is to be
used in dry interior locations only.
Spacing
Spacing of 30 ft. on a smooth ceiling as per NFPA 72E.
Where conditions or response requirements vary, other
spacing may apply.
Base Selection And Wiring Guide
Refer to the installation instructions for the plug-in detector
bases for wiring instructions. System Sensor has available a
variety of detector bases for this smoke detector, including 2-
wire applications with and without relays and/or current lim-
iting resistors, 4-wire and 120VAC applications. (Note: the
120VAC detector base is not available in Canada.)
All bases are provided with screw terminals for power,
ground, remote annunciator connections, and relay contact
connections, if applicable. The electrical ratings for each
detector-base combination are also included in the base in-
stallation instructions.
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