System Sensor B501-WHITE

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INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

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

www.systemsensor.com/www.systemsensor.ca

BEFORE INSTALLING

Please read the System Smoke Detectors Application Guide, which provides

detailed information on detector spacing, placement, zoning, wiring, and spe-

cial applications. Copies of this application guide are available from System

Sensor. Observe guidelines for NFPA 72 or CAN/ULC S524 (depending on

location).

NOTICE: This manual should be left with the owner/user of this equipment.

IMPORTANT: Use only with compatible ULC-listed detector heads for proper

system function. The detector used with this base must be tested and main-

tained regularly following requirements of NFPA 72 or CAN/ULC S536 (de-

pending on location). The detector should be cleaned at least once a year.

IMPORTANT: Utiliser uniquement avec des détecteurs homologuées ULC

pour le bon fonctionnement du système. Le détecteur utilisé avec cette base

doit être testé et entretenu régulièrement en conformité avec les exigences de

la norme CAN/ULC S536. Le détecteur doit être nettoyé au moins une fois

par an.

GENERAL DESCRIPTION

The B501-WHITE, B501-IV, and B501-BL are plug in detector bases intended

for use in an intelligent system with screw terminals provided for power

(+ and –), and remote annunciator connections. Communication takes place

over the power lines (+ and –).

BASE TERMINALS

No. Function

1 Power (–), Remote Annunciator (–)

2 Power (+)

3 Remote Annunciator (+)

FIGURE 1. TERMINAL LAYOUT

TAMPER PROOF

TAB

TERMINAL 3

TERMINAL 2

TERMINAL 1

C0131-01

SPECIFICATIONS

Base Diameter: 4.0" (10.2 cm)

Base Height: 0.74" (18.8 mm)

Operating Temperature: Refer to applicable sensor Operating Temperature Range using the Base/Sensor Cross Reference Chart at systemsensor.com

Electrical Ratings – includes base and detector

Operating Voltage: 15 to 32 VDC

Standby Current: 150 µA

Listings: UL268, ULC S529

I56-3738-004

MOUNTING

This detector base mounts directly to 4" square with plaster ring, 3

/2" octa-

gon, 50 mm, 60 mm, and 70 mm centers.

INSTALLATION AND WIRING GUIDELINES (SEE FIGURE 2)

All wiring must be installed in compliance with all applicable local codes

and any special requirements of the local 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 and modules),

it is recommended that the wiring be no smaller than 18 AWG (0.823 mm²).

Wire sizes up to 12 AWG (3.31 mm²) may be used with the base.

Alarm system control panels have specifications for allowable loop resistance.

Consult the control panel specifications for the total loop resistance allowed

before wiring the detector loops.

Make wiring connections by stripping about

/8" (10 mm) of insulation from

the wire end (use strip gauge molded in base). Then slide the wire under the

clamping plate and tighten the clamping plate screw. Do not loop the wire

under the clamping plate. (See Figure 3.)

Check the zone wiring of all bases in the system before installing the detec-

tors. This includes checking the wiring for continuity, correct polarity, ground

fault testing and performing a dielectric test.

The base includes an area for recording the zone, address, and type of detec-

tor to be installed at that location. This information is useful for setting the

detector head address and for verification of the detector 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.

FIGURE 2. TYPICAL WIRING DIAGRAM FOR 2-WIRE LOOP

(–)

(+)

+ -

UL/ULC Listed Compatible

Control Panel

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

provide supervision of connections.

MISE EN GARDE : Ne pas boucler le fil sous la borne 1 ou 2.

Couper le fil pour assurer la supervision des connexions.

CLASS A OPTIONAL WIRING

REMOTE

ANNUNCIATOR

(–)

(+)

C0133-03

B501-WHITE, B501-IV, and B501-BL

4" Plug-in Detector Bases

1 I56-3738-004

03/07/2018

Need help?

Do you have a question about the System Sensor B501-WHITE and is the answer not in the manual?

The provided document describes the B501-WHITE, B501-IV, and B501-BL 4" Plug-in Detector Bases from System Sensor, designed for use in intelligent fire alarm systems. These bases serve as mounting and connection points for compatible ULC-listed detector heads.

Function Description

The B501 series detector bases are plug-in type bases that facilitate the connection of intelligent smoke detector heads to a fire alarm control panel. They are equipped with screw terminals for power connections (positive and negative) and remote annunciator connections. Communication between the detector head and the control panel occurs over the power lines. The bases are designed to mount directly to various standard electrical boxes, including 4" square with plaster ring, 3½" octagon, and 50 mm, 60 mm, and 70 mm centers. The document emphasizes that these bases (B501-WHITE, B501-IV, and B501-BL) replace previous models (B501 and B501A) and are functionally identical.

Important Technical Specifications

Base Diameter: 4.0 inches (10.2 cm)
Base Height: 0.74 inches (18.8 mm)
Operating Temperature: Refer to the applicable sensor Operating Temperature Range using the Base/Sensor Cross Reference Chart at systemsensor.com.
Electrical Ratings (includes base and detector):
- Operating Voltage: 15 to 32 VDC
- Standby Current: 150 µA
Listings: UL268, ULC S529
Terminal Functions:
- Terminal 1: Power (-), Remote Annunciator (-)
- Terminal 2: Power (+)
- Terminal 3: Remote Annunciator (+)
Wiring Recommendations:
- For signal wiring (between interconnected detectors and modules), a minimum of 18 AWG (0.823 mm²) is recommended.
- Wire sizes up to 12 AWG (3.31 mm²) can be used with the base.
- Wiring connections should be made by stripping approximately 3/8" (10 mm) of insulation from the wire end and sliding the wire under the clamping plate before tightening the screw. Wires should not be looped under the clamping plate.
- For Class A optional wiring, the wire run should be broken at terminals 1 or 2 to provide supervision of connections.

Usage Features

Compatibility: Designed for use only with compatible ULC-listed detector heads for proper system function.
Mounting Versatility: Can be mounted to various standard electrical boxes, including 4" square with plaster ring, 3½" octagon, 50 mm, 60 mm, and 70 mm centers.
Remote Annunciator Support: Features dedicated terminals (1 and 3) for connecting a remote annunciator (e.g., RA100Z) using a spade lug terminal. The spade lug is considered an equivalent means to separate multiple stripped wires under the same terminal.
Tamper-Resist Feature: The base includes a tamper-resist feature to prevent unauthorized removal of the detector head.
- Activation: To activate, a tab on the detector base must be broken by twisting it toward the center of the base using needle-nose pliers before installing the detector.
- Removal (when activated): A small-bladed screwdriver must be inserted into a small hole on the side of the base to push a plastic lever away from the detector head, allowing counterclockwise rotation for removal.
- Defeating the Feature: The tamper-resist feature can be permanently defeated by breaking and removing the plastic lever from the base, though this prevents its future use. The manual advises against using this feature if a removal tool is intended to be used.
Wiring Guidelines: All wiring must comply with local codes and the requirements of the local authority having jurisdiction. Proper wire gauges and color-coding are recommended to minimize wiring errors.
On-Base Information Area: The base includes a dedicated area for recording the zone, address, and type of detector to be installed at that location. This information is useful for setting the detector head address and verifying the required detector type.

Maintenance Features

Regular Testing: The detector used with this base must be tested and maintained regularly according to NFPA 72 or CAN/ULC S536 requirements.
Annual Cleaning: The detector should be cleaned at least once a year.
Pre-Installation Checks: Before installing detectors, it is crucial to check the zone wiring of all bases for continuity, correct polarity, ground faults, and perform a dielectric test.
Documentation: The manual emphasizes the importance of reading the System Smoke Detectors Application Guide for detailed information on detector spacing, placement, zoning, wiring, and special applications. This guide is available from System Sensor. The manual itself should be left with the owner/user of the equipment.

The document also includes a three-year limited warranty, covering defects in materials and workmanship under normal use and service from the date of manufacture. The warranty limits the company's obligation to repair or replace defective parts and excludes damages due to unreasonable use, modifications, or alterations.