System Sensor B501 User manual

D550-02-00 1 I56-357-06R

B501 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, System

Smoke Detectors Application Guide, 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.

General Description

The B501 is a plug in detector base intended for use in an

intelligent system with screw terminals provided for power

(+) and (–), and remote annunciator connections. The

communication takes place over the power (+) and (–)

lines.

Base Terminals

No. Function

1Power (–), Remote Annunciator (–)

2Power (+)

3Remote Annunciator (+)

SHEILD

2(+)

1(–)

BASE

TERMINALS

TAMPER PROOF

TAB

Figure 1. Terminal layout:

Specifications

Diameter: 4.0 inches (10.2cm)

Mounting: 50mm, 60mm, and 70mm centers

Electrical Ratings – includes base and detector

Voltage Range: 15-32 VDC

Standby Current (nominal): 150µA at 24 VDC

Power-Up Surge at

Maximum Rated Voltage: 1.5mA–Sec.

LED Current (nominal): 6mA at 24 VDC

Operating Temperature Range: 32° to 150°F (0° to 66°C)

C0131-00

D550-02-00 2 I56-357-06R

Wiring Installation Guidelines (See Figure 2)

All wiring must be installed in compliance with the

National Electrical Code and the local authority having

jurisdiction. Proper wire gauges should be used. The con-

ductors used to connect the smoke detectors to control

panels and accessory devices should be color-coded to pre-

vent wiring mistakes. Improper connections can prevent a

system form responding properly in the event of a fire.

For signal wiring (the wiring between interconnected

detectors and modules), it is recommended that the wiring

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 or shielded cable

installed in separate grounded conduit to protect the loop

from extraneous electrical interference. If a cable shield is

provided, the shield connection to and from the base must

be continuous by using wire nuts, crimping, or soldering as

appropriate for a reliable connection.

UL LISTED COMPATIBLE

CONTROL PANEL

CLASS A OPTIONAL WIRING

REMOTE ANNUNCIATOR

Figure 2. Typical wiring diagram for 2-wire loop:

Wire Connections are made by simply 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. Do

not loop the wire under the clamping plate.

The zone wiring of the detector base should be checked

before the detector heads are installed in them. The wiring

should be checked for continuity, polarity in the base, and

dielectric tests.

The base contains a label to write the zone, address, and

type of detector to be installed at that location. This infor-

mation is used to set the address of the detector head that

will later be plugged into the base and to verify the type

required for that location.

C0133-00

CAUTION: Do not loop wire under terminal 1 or 2.

Break wire run to provide supervision of connections.

D550-02-00 3 I56-357-06R

STRIPPED WIRE

WIRE WITH

SPADE LUG

Figure 4. Connection to remote annunciator terminal:

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

Tamperproof Feature

NOTE: Do Not use the tamper-resistant capability if the

XR2 or XR2B Removal Tool will be used. This detector

base also includes an optional tamperproof feature that

when activated prevents removal of the detector without

the use of a tool.

To activate this feature, simply break off the tab on the

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

To remove the detector from the base once the tamperproof

feature has been activated, place a small-bladed screwdriv-

er into the small hole on the side of the base and push the

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

This will allow the detector to be rotated counterclockwise

for removal.

The tamperproof feature may be defeated by breaking and

removing the plastic lever from the base, however this pre-

vents ever using the feature again.

Remote Annunciator (RA400)

The remote annunciator is connected between terminals 1

and 3 using the spade lug terminal packed with the remote

annunciator. The spade lug terminal is connected to the

base terminal as shown in Figure 4.

It is not acceptable to have three stripped wires under the

same wiring terminal unless they are separated by a wash-

er or equivalent means. The spade lug supplied with the

model RA400 is considered an equivalent means. See

Figure 2 for proper installation.

C0116-00

C0132-00

PLASTIC LEVER BREAK TAB AT

DOTTED LINE BY

TWISTING TOWARD

CENTER OF BASE.

SCREWDRIVER TO

PRESS PLASTIC LEVER

IN DIRECTION OF

ARROW

D550-02-00 4 I56-357-06R

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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