INSTALLATION AND MAINTENANCE INSTRUCTIONS
B401R Plug-in Detector Base
A Division of Pittway
System Sensor Europe
For use with the following smoke detectors: 1451E and 2451E |
Via Caboto 19, 34143, Trieste, Italy |
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Specifications |
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Diameter: |
10.2 cm (4.0 inches) |
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Height: |
2.0 cm (0.8 inches) |
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Weight: |
152 g (0.34 lb.) |
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Operating Temperature: |
–10° to +60° C (14° to 140°F) |
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Operating Humidity: |
10% to 93% Relative Humidity |
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Electrical Ratings — includes base and detector |
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Voltage: |
24 VDC |
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Maximum Ripple Voltage: |
4 Volts peak to peak |
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Start-up Capacitance: |
0.02 μF Maximum |
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Standby Ratings: |
15 VDC Minimum |
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32 VDC Maximum |
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120 μA Maximum |
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Alarm Ratings: |
10 mA Minimum at 10.5 VDC |
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62mA Maximum at 32 VDC |
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(If used, the RA400Z Remote Annunciator operates within the specified |
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detector alarm currents.) |
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Reset Voltage: |
2.5 VDC Minimum |
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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, placement, zoning, wiring, and special applications. Copies of this manual are available at no charge from System Sensor.
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 requirements. The detector used with this base should be cleaned at least once a year.
General Description
The B401R plug-in detector base is used with System Sensor model 2451E photoelectronic detector head and model 1451E ionization detector head. The capability 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 plug-in detector bases.
The B401R base is intended for use in 2-wire systems, with screw terminals provided for power, ground, and remote annunciator connections. The B401R base also contains a resistor to provide current limiting in the alarm state.
1 |
I56-351-03 |
Base Terminals
NO. FUNCTION
1REMOTE ANNUNCIATOR (+)
2NEGATIVE (–) V IN, REMOTE ANNUNCIATOR (–)
3NEGATIVE (–) V OUT
4NOT USED
5POSITIVE (+) V IN AND V OUT
NOTE: If remote annunciator is not used, polarity to these terminals may be reversed.
Mounting
These detector bases mount to typical junction boxes. Install the base to the box using the screws supplied with the junction box. Figure 2 shows mechanical mounting details.
Wiring Installation Guidelines
All wiring must be installed in compliance with the National Electrical Code and the local codes having jurisdiction. Proper wire gauges should be used. The conductors used to connect smoke detectors to control panels and accessory devices should be color-coded to prevent wiring mistakes. Improper connections can prevent a system from responding properly in the event of a fire.
For signal wiring, (the wiring between interconnected detectors or from detectors to auxiliary devices), it is recommended that single-conductor wire be no smaller than 1.5mm2, and that twoor three-conductor wire be no smaller than 1.0mm2. For best system performance, alarm loop conductors should be installed in separate grounded conduit or shielded cable to protect the alarm loop from extraneous electrical interference.
Smoke detectors and alarm system control panels have specifications for allowable loop resistance. Consult the control panel manufacturer’s specifications for the total loop resistance allowed for the particular model control panel being used before wiring the detector loops.
Wiring Instructions
Wire connections are made by stripping about 1 cm (3/8") of insulation from the end of the wire (use strip gauge molded in base), sliding the bare end of the wire under the clamping plate, and tightening the clamping plate screw.
The zone wiring of the detector bases should be checked before the detector heads are installed. To make this possible, this base contains a special spring-type shorting jumper (shown in Figure 2). After a detector base is properly wired and mounted to an electrical box, make sure that the shorting spring is in contact with terminal 3.
Figure 1. Terminal layout:
3
2
1
5 4
Figure 2. Mounting base to box:
SHORTING
SPRING
A78-1468-03
A78-1468-01
2 |
I56-351-03 |
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