D450-09-00 1 I56-451-02
B401BR750 Plug-in Detector Base
For use with the following smoke detectors:
1451, 2451, and 2451TH
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,
Guide for Proper Use of 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 installations in Canada, refer to CAN4-S524, Standard
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: The detector used with this base must be
tested and maintained regularly following NFPA 72 require-
ments. The detector used with this base should be cleaned
at least once a year.
Specifications
Base Diameter: 6.2 inches (157 mm)
Base Height: 1.1 inches (29 mm)
Weight: 0.3 lb. (130 g)
Mounting: 4-inch square box with or without plaster ring. Min. Depth–1.5 inches
4-inch octagon box. Min. Depth–1.5 inches
3-1/2 inch octagon box. Min. Depth–1.5 inches
Operating Temperature Range: 0° to +49°C (32° to 120°F)
Operating Humidity Range: 10% to 93% Relative Humidity, noncondensing
Electrical Ratings — includes base and detector
System Voltage: 12/24 VDC
Maximum Ripple Voltage: 4 Volts peak to peak
Start-up Capacitance: 0.02
µ
F Maximum
Standby Ratings: 17 VDC Minimum; 32 VDC Maximum
120
µ
A Maximum
Alarm Ratings: 10mA Minimum at 13.5 VDC; 39mA Maximum at 32 VDC
(If used, the RA400 remote lamp operates within specified detector alarm currents.)
Reset Voltage: 2.5 VDC Minimum
Reset Time: 0.3 Seconds Maximum
Start-up Time: 34.0 Seconds Maximum
General Description
The B401BR750 plug-in detector base is used with System
Sensor model 2451 and 2451TH photoelectronic detector
heads and model 1451A ionization detector heads. The ca-
pability of plugging these detectors into a variety of special
bases makes them more versatile than equivalent direct-
wired models. Refer to the System Sensor catalog for other
available plug-in detector bases.
This base is intended for use in 2-wire systems, with screw
terminals provided for power, ground, and remote annun-
ciator connections. It also contains a resistor to provide
current limiting in the alarm state.
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