System Sensor B401BR Manuel utilisateur

D450-02-00 1 I56-352-06R

B401BR 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

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) typical

Base Height: 1.1 inches (29 mm) typical

Weight: 0.3 lb. (130 g) typical

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: –10° to 60°C (14° to 140°F)

Note: Do not install where normal ambient temperature extends beyond 0° to 49°

(32° to 120°F)

Operating Humidity Range: 10% to 93% Relative Humidity

Electrical Ratings — includes base and detector

System Voltage: 24 VDC

Maximum Ripple Voltage: 4 Volts peak to peak

Start-up Capacitance: 0.02 µF Maximum

Standby Ratings: 17 VDC Minimum

32 VDC Maximum

120 µA Maximum

Alarm Ratings: 10 mA Minimum at 10.5 VDC

62 mA Maximum at 32 VDC

The optional RA400Z Remote Annunciator operates within the specified detector

alarm currents.

Reset Voltage: 2.50 VDC Minimum

Reset Time: 0.3 Sec Maximum

Start-up Time: 34.0 Sec Maximum

For use with the following detectors: 1451, 2451, and 2451TH

General Description

The plug-in detector base B401BR is used with System

Sensor 400 Series photoelectronic, ionization, and heat

detector heads. The ability to accept a variety of detector

heads makes this base more versatile than equivalent

direct-wired models. Refer to the System Sensor catalog for

other available plug-in detector bases.

This B401BR base is intended for use in 2-wire systems,

with screw terminals provided for power, ground, and

remote annunciator connections. The B401BR base also

contains a resistor to provide current limiting in the alarm

state.

D450-02-00 2 I56-352-06R

Mounting

This detector base mounts directly to 31⁄2inch and 4 inch

octagon boxes, and 4 inch square boxes (with or without

plaster rings). To mount, remove decorative ring by turning

it in either direction to unhook the snaps, then separate the

ring from the base.

Install the base to the box using the screws supplied with

the junction box and the appropriate mounting slots in the

base. Place decorative ring onto base, then turn in either

direction until the ring snaps in place (see Figure 1).

Installation Guidelines

All wiring must be installed in compliance with the

National Electrical Code and the local codes having juris-

diction. Proper wire gauges should be used. The conduc-

tors 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), it is recommended that the wire be no smaller

than 18 gauge (1.0 square mm). Wire sizes up to 12 gauge

wire (2.5 square mm) 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 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.

For system supervision — For terminals 2, 3, and 5 do not

use looped wire under terminals. Break wire run to provide

system supervision of connections.

Wire connections are made by simply stripping insulation

from the end of the wire, sliding the bare end of the wire

under the clamping plate, and tightening the clamping

plate screw. Use the strip gauge molded into the base for

ease of wiring to terminals.

System Sensor smoke detectors and mounting bases are

marked with a compatibility identifier located as the last

digit of a five digit code stamped on the back of the prod-

uct. Connect detectors/mounting bases only to compatible

control units as indicated in System Sensor’s compatibility

chart which contains a current list of UL listed control units

and detector head/base combinations. A copy of this list is

available from System Sensor upon request.

CAUTION

Figure 1. Mounting detector to box:

SNAP ON

DECORATIVE

RING

SCREWS (NOT

SUPPLIED)

DETECTOR

BASE

BOX (NOT

SUPPLIED)

SHORTING

SPRING

The zone wiring of the detector base should be checked

before the detector heads are installed in them. To make

this possible, this base contains a special spring-type short-

ing jumper. After a detector base is properly wired and

mounted on an electrical box, make sure that the jumper

spring is in contact with the base of Terminal 3. This tem-

porary connection shorts the negative-in and negative-out

leads and permits the wiring of the loop to be checked for

continuity.

Once all the detector bases have been wired and mounted,

and the loop wiring has been checked, the detector heads

may be installed in the bases. The shorting spring in the

base will disengage when the detector head is turned into

place.

A78-1175-01

D450-02-00 3 I56-352-06R

Tamper-resist Feature

Do not use the tamper resist feature if the XR5 removal tool

is to be used.

This detector base also includes an optional tamper resist

feature that, when activated, prevents removal of the detec-

tor without the use of a tool.

To activate this feature, break the tab from the detector

base, as shown in Figure 3A, and install the detector. To

remove the detector from the base once the tamper resist

feature has been activated, insert a small-bladed screw-

driver into the slot in the side of the base and press the

plastic lever away from the detector head (see Figure 3B).

This allows the detector to be rotated counterclockwise and

removed.

CAUTION

PLASTIC LEVER

BREAK TAB AT

DOTTED LINE BY

TWISTING TOWARD

CENTER OF BASE.

USE SMALL-BLADED

SCREWDRIVER TO

PUSH PLASTIC LEVER

IN DIRECTION OF

ARROW.

A78-1175-03

Figure 3B. Removing detector head from base:Figure 3A. Activating tamperproof feature:

2-WIRE CONTROL PANEL

REMOTE

ANNUNCIATOR

REMOTE

ANNUNCIATOR

OPTIONAL FAULT TOLERANT WIRING

NOTE: For system supervision - Do not loop wire under

terminals 2, 3, and 5. Break wire run to ensure

system supervision of connections.

–

Figure 2. Typical wiring diagram for 2-wire detector systems:

A78-1175-10

Note: Head removal after the tamper resist feature has

been activated first requires removal of the decora-

tive ring.

The tamper resist feature can be defeated by breaking and

removing the plastic lever from the base. However, this per-

manently defeats the tamper resist feature.

D450-02-00 4 I56-352-06R

Three-Year Limited Warranty

System Sensor warrants its enclosed smoke detector base to be free from

defects in materials and workmanship under normal use and service for a

period of three years from date of manufacture. System Sensor makes no

other express warranty for this smoke detector base. No agent, represen-

tative, dealer, or employee of the Company has the authority to increase

or alter the obligations or limitations of this Warranty. The Company’s

obligation of this Warranty shall be limited to the repair or replacement of

any part of the smoke detector base which is found to be defective in

materials or workmanship under normal use and service during the three

year period commencing with the date of manufacture. After phoning

System Sensor’s toll free number 800-SENSOR2 (736-7672) for a Return

Authorization number, send defective units postage prepaid to: System

Sensor, Repair Department, RA #__________, 3825 Ohio Avenue, St.

Charles, IL 60174. Please include a note describing the malfunction and

suspected cause of failure. The Company shall not be obligated to repair or

replace units which are found to be defective because of damage, unrea-

sonable use, modifications, or alterations occurring after the date of man-

ufacture. In no case shall the Company be liable for any consequential or

incidental damages for breach of this or any other Warranty, expressed or

implied whatsoever, even if the loss or damage is caused by the Company’s

negligence or fault. Some states do not allow the exclusion or limitation of

incidental or consequential damages, so the above limitation or exclusion

may not apply to you. This Warranty gives you specific legal rights, and

you may also have other rights which vary from state to state.

Please refer to insert for the Limitations of Fire Alarm Systems

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