System Sensor B402B Installation And Maintenance Instructions

INSTALLATION AND MAINTENANCE INSTRUCTIONS
B402B Plug-in Detector Base
For use with the following smoke detectors:
1451, 2451, and 2451TH

Specifications

Base Diameter:
Base Height:
Weight:
Mounting:
Operating Temperature Range:
Operating Humidity Range:
Electrical Ratings — includes base and detector
System Voltage:
Maximum Ripple Voltage:
Start-up Capacitance:
Standby Ratings:
Alarm Ratings:
Reset Voltage:
Reset Time:
Start-up Time:
Relay Contact Ratings
Resistive or Inductive (60% Power Factor):
Form A:
Form C:

Before Installing

Please read the System Sensor manual I56-407, Guide for
Proper Use of System Smoke Detectors, which provides
detailed information on detector spacing, placement, zon-
ing, wiring, and special applications. Copies of this manual
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.
D450-03-00
6.2 inches (15.7 cm)
1.1 inches (2.8 cm)
0.3 lb. (130 g)
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
0° to +49°C (32° to 120°F)
10% to 93 % Relative Humidity, Non-condensing
24 VDC
4 Volts peak to peak
0.02 µF Maximum
20 VDC Minimum
29 VDC Maximum
120 µA Maximum
17 mA Minimum
36 mA Maximum
1.4 VDC Minimum
0.3 Seconds Maximum
(If used, the RA400 remote lamp operates within the specified
detector alarm currents.)
34.0 Seconds Maximum
2.0A @ 30 VAC/DC
2.0A @ 30 VAC/DC
0.6A @ 110 VDC
1.0A @ 125 VAC
1
3825 Ohio Avenue, St. Charles, Illinois 60174

General Description

The plug-in detector base B402B is used with System
Sensor model 2451 and 2451TH photoelectronic detector
heads, and model 1451 ionization detector head. The capa-
bility 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 B402B base is intended for use in 4-wire systems, with
screw terminals provided for power, remote annunciator,
and relay contact connections. These bases also contain a
resistor to provide current limiting in the alarm state.
1-800-SENSOR2, FAX: 630-377-6495
I56-374-05R