D450-01-01
1
I56-298-09R
B401B Plug-in Detector Base
INSTALLATION AND MAINTENANCE INSTRUCTIONS
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 pro-
vides detailed information on detector spacing, placement,
zoning, wiring, and special applications. Copies of this man-
ual are available at no charge from System Sensor. (For instal-
lations 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 (15.7 cm)
Base Height:
1.1 inches (2.8 cm)
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:
8.5 VDC Minimum; 35 VDC Maximum
120
µ
A Maximum
Alarm Ratings:
4.2 VDC Minimum at 10 mA; 6.6 VDC Maximum at 100 mA
(Alarm current must be limited to 100 mA by the control panel. 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
For use with the following smoke detectors:
1451, 2451, and 2451TH
General Description
The B401B plug-in detector base is used with System
Sensor model 2451 and 2451TH photoelectronic detector
heads and model 1451A ionization detector heads. The
capability of plugging these detectors into a variety of spe-
cial 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.
