System Sensor B401 User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS

B401 Plug-In Detector Base

For use with the following detectors:

US Models:	1151, 1451, 2151, 2451, 2451TH, 5451
European Models:	1151E, 1451E, 2151E, 2451E, 5451E
Australian Models:	1151AUS, 1451AUS, 2151AUS, 2451AUS, 4451AUS
	5451AUS, 51A51, 51B51, 51C51, 51D51

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: [phone]

Specifications
Base Diameter:	10.2 cm (4.0 inches)
Base Height:	2.0 cm (0.8 inches)
Weight:	152 g (0.34 lb.)
Mounting:	50 mm box
	60 mm box
Operating Temperature Range:	–10° to +60°C (14° to 140°F) — European Installation
	0° to 49°C (32° to 120°F) — US/Australian Installation
Operating Humidity Range:	10% to 93% Relative Humidity
Electrical Ratings — includes base and detector
	Base And Smoke Detector		Base And Heat Detector
System Voltage:	12/24 VDC		24 VDC
Maximum Ripple Voltage:	4 Volts peak to peak		4 Volts peak to peak
Start-up Capacitance:	0.02 µF Maximum		0.02 µF Maximum
Standby Ratings:*	8.5	VDC Minimum	15 VDC Minimum
	35 VDC Maximum		35 VDC Maximum
	120 µA Maximum		100 µA Maximum
Alarm Ratings:	4.2	VDC Minimum at 10 mA**	4.2 VDC Minimum at 10 mA**
	6.6	VDC Maximum at 100 mA**	6.6 VDC Maximum at 100 mA**
Reset Voltage:	2.5	VDC Minimum	2.5 VDC Minimum
Reset Time:	0.3	Seconds Maximum	0.3 Seconds Maximum
Start-up Time:	34 Seconds Maximum		34 Seconds Maximum

*1151E: 30 µA Maximum.

**Alarm current MUST be limited to 100 mA maximum (130 mA for models 1151 and 2151) by the control panel. If used, the RA400Z Remote Annunciator operates within the specified detector alarm currents.

Before Installing

Please thoroughly read 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 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

This B401 plug-in detector base is used with System Sensor smoke and heat detector heads. 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 available plug-in detector bases.

The B401 base is intended for use in 2-wire systems, with screw terminals provided for power and remote annunciator connections.

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Mounting

Figure 1 shows mechanical mounting details. These detector bases mount to typical junction boxes. Attach the base to the box using the screws supplied with the junction box.

Installation Guidelines

All wiring must be installed in compliance with applicable codes and the authority 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 reduce the likelihood of wiring errors. Improper connections can prevent a system from responding properly in the event of a fire.

For signal wiring (the wiring between interconnected detectors), it is recommended that the wire be no smaller than 18 gauge. Wire sizes up to 12 gauge may be used with the base. For best system performance, the power (+) and

(–) loop wires should be twisted pair and installed in separate grounded conduit to protect the 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 control panel being used before wiring the detector loops.

Wiring Instructions

CAUTION

Do not loop wire under terminals. Break wire run to ensure supervision of connections.

Wire connections are made by stripping about 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.

Two-wire initiating devices receive their power from the initiating circuit of a control panel. Electrical specifications of the control panel and the detector-base combination must be compatible for the system to function properly.

System Sensor maintains a list of two-wire detectors and control panels that are listed as compatible. The 2-Wire Compatibility Chart is available from System Sensor at no charge.

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 1). After a detector base is prop-

Figure 1. Mounting base to box:

SHORTING

SPRING

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