System Sensor B224RB Manuale utente

D450-16-01 1 I56-659-09R

B224RB Plug-in

Relay Detector Base

INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: 630-377-6495

www.systemsensor.com

Before Installing

Please thoroughly read the system wiring and installation

manuals and the System Smoke Detectors Applications

Guide, which provide detailed information on detector

spacing, placement, zoning, and special applications.

NOTICE: This manual should be left with the owner/user

of this equipment.

IMPORTANT: The detector used with these bases must be

tested and maintained regularly following NFPA 72 require-

ments. The detectors should be cleaned at least once a year.

General Information

Form C latching relay contacts are included for the control

Specifications

Base Diameter: 6.1 inches (155 mm)

Base Height: 1.2 inches (31 mm)

Mounting: 4-inch square box with or without plaster ring, Min Depth - 1.5 inches (38 mm)

4-inch octagon box, Min. depth - 1.5 inches (38 mm)

31⁄2-inch octagon box, Min. depth - 1.5 inches (38 mm)

Operating Temperature Range: 0° to 49°C (32° to 120°F)

Operating Humidity Range: 10% to 93% Relative Humidity (Non-condensing)

Electrical Ratings

Operating Voltage: 15 to 32 VDC

Time Averaged Standby Ratings: <500 µA @ 24 VDC

Relay Characteristics

Coil: 2 coil latching

Contact Type: 1 Form C

Contact Relay

Resistive: 2 A @ 30 VDC

Inductive: 0.3 A @ 110 VDC (with .35 PF or greater)

0.3 A @ 120 VAC (with .35 PF or greater)

1.0 A @ 30 VDC (with .6 PF or greater)

Set Time: 4 seconds minimum, 20 seconds maximum

Reset Time: 1 second minimum, 8 seconds maximum

of an auxiliary function. The relay operates 12 seconds

(nominally) after activation of the sensor head remote

annunciator output.

Mounting

The detector base mounts directly to 31⁄2- and 4-inch octa-

gon and 4-inch square boxes, with or without a plaster ring.

To mount, remove the decorative ring by rotating it in either

direction to unhook the snaps. Then, separate the ring from

the base. Install the base on the box, using the screws sup-

plied with the junction box and the appropriate slots in the

base. Replace the decorative ring on the base and rotate it in

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

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D450-16-01 2 I56-659-09R

Installation Guidelines

All wiring must be installed in compliance with all appli-

cable local codes and any special requirements of the local

authority having jurisdiction, using the proper wire sizes.

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 connec-

tions 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 (0.9 square mm). However, wire sizes up to

14 gauge (2.0 square mm) can be used with the base. The

use of twisted pair wiring or shielded cable for the power

(+ and –) loop is recommended to minimize the effects of

electrical interference.

If shielded cable is used, the shield connection to and from

the detector must be continuous by using wire nuts, crimp-

ing, or soldering, as appropriate, for a reliable connection.

Alarm system control panels have specifications for allow-

able loop resistance. Consult the control panel specifica-

tions for the total loop resistance allowed before wiring the

detector loops.

Wiring Instructions

The base uses a latching relay that can change states if it is

subjected to mechanical shocks or jarring. As a result, even

though relay contacts are in the open state when the base

is shipped from the factory, the contacts may have closed

during shipment.

Connecting an auxiliary control circuit to closed relay con-

tacts can cause an unexpected, and possibly dangerous,

activation of that circuit. Therefore, do NOT connect an

auxiliary control circuit to the relay contacts (terminals 1,

2, and 3) before ensuring that the relay contacts are in their

open state. Ensure that the contacts are open by applying

power to the bases WITHOUT the sensor heads installed.

Make wiring connections by stripping about 3⁄8″(10 mm) of

insulation from the end of the wire. Then, slide the wire

under the clamping plate and tighten the clamping plate

screw.

WARNING

SCREWS (NOT

SUPPLIED)

BOX (NOT

SUPPLIED)

DETECTOR

BASE

SNAP ON

DECORATIVE

RING

Figure 1. Mounting the base to an electrical box:

C0148-00

Wire the normally open (NO) line to terminal 2 (see Figure

2). Insert the normally closed (NC) line of the relay to ter-

minal 1 and the relay common line to terminal 3. Wire the

communication lines in (+) and out (+)to terminal 4.

Insert the communication line in (–) and out (–) to terminal

5. Terminal 6 is for shielded cable only (see Figure 2). If

shielded cable is used, the shield connection to and from the

detector must be continuous by using wire nuts, crimping,

or soldering to ensure a reliable connection. If shielded

cable is not used, leave terminal 6 in the screwed-down

position.

Check the zone wiring of all bases in the system before

installing detector heads. This includes checking the wiring

for continuity, correct polarity, ground fault testing, and

performing a dielectric test.

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D450-16-01 3 I56-659-09R

C0149-00

LISTED COMPATIBLE CONTROL PANEL

CLASS A OPTIONAL WIRING

3 RELAY COMMON

1 NORMALLY CLOSED

2 NORMALLY OPEN

TWISTED PAIR RECOMMENDED

(+)

(–)

(+)

(–)

(N.C.)

(N.O.)

(COMMON)

(+)

(–)

(S)

OTHER INTELLIGENT

DEVICES

Figure 2. Wiring diagram:

A label is affixed to the base for recording the zone,

address, and type of detector being installed at the base

location. This information is useful for setting the detector

head address and for verification of the sensor type

required for that location.

Once all detector bases have been wired and mounted, and

the loop wiring has been checked, the detector heads may

be installed in the bases.

Tamper-resist Feature

NOTE: Do not use the tamper-resist feature if the removal

tool is to be used.

This detector base includes a tamper-resist feature that pre-

vents its removal from the base without the use of a tool.

To activate this feature, break the tab from the detector

base as shown in Figure 3A (see page 4). Then, install the

detector.

To remove the detector from the base once the tamper-

resist feature has been activated, insert a small-bladed

screwdriver into the slot in the side of the base and push

the plastic lever away from the detector head (see Figure

3B, page 4). This allows the detector to be rotated counter-

clockwise for removal.

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

prevents the feature from being used again.

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D450-16-01 4 I56-659-09R

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, representa-

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

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

gation 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 materi-

als 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.

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.

Figure 3A. Activating the tamper-resist feature:

C0144-00

Figure 3B. Removing the detector head from the

base:

Please refer to insert for the Limitations of Fire Alarm Systems

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