Tyco Safety Canada 00NB906 Users manual

WLS906-433

Battery-Powered Smoke Detectors
For Residential Use

INSTRUCTIONS FOR
INSTALLATION AND USE

READ THIS INSTRUCTION SHEET THOROUGHLY BEFORE

INSTALLING AND USING YOUR MERIDIAN SMOKE DETECTOR

Features

• Advanced 90° photoelectric detection pattern and specially
designed smoke chamber
resistance

• Unique high signal-to-noise ratio and superior RFI
immunity to prevent false alarms

• Excellent smoke access provides reliable detection for all
smoke flow directions and velocities

• Loud 85dB piezoelectric alarm horn

• Battery-powered design for easy installation and
independence from house power sources

• Uses six AA batteries and special circuit design to provide
extra long battery life

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for superior detection and dust

Introduction

The DSC Meridian Photoelectric Smoke Detector incorporates
many advanced design features to provide years of reliable
operation. It is important to follow the Installation and Operation
instructions on this sheet to ensure that the unit will function
properly — even the best designed smoke detector will be rendered
useless if it is not connected or located properly.

It is very important that you understand how to test and maintain
your system. Read the Instruction or User Manual for your alarm
system to familiarise yourself with the Fire Alarm functions. Be sure
to test your system regularly following the test procedures described
in your manual. If you should ever have problems operating or
testing your system, and especially if there are problems with the
Fire Alarm functions, contact your Smoke Detector Installer or
Dealer immediately for service.

While smoke detectors and alarm systems are designed to warn you
of potentially dangerous situations, no system can prevent emergencies.
An alarm system is not a substitute for life and property insurance; you
should always maintain appropriate insurance coverage.

How the Smoke Detector Works

• Solid-state LED indicator light (red)

• Visible flash light and audible trouble chirp for low battery
warning

• Equipped with an RF transmitter, WLS906 can
communicate with compatible DSC Wireless Security
Systems

• Test Button allows user to perform sensitivity test and get
a local indication of test result

• Magnet-activated reed-switch allows user to perform
system test

• Battery removal sensor alerts user to missing battery and
prevents installation of detector when no battery is
installed

• Automatic self-test once every 40 seconds provides an
audible trouble indication if the unit has insufficient smoke
sensitivity

• Attractive styling for any decor

Protected under Canadian Patent No. 1452296. Other patents pending.

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As shown in the illustration, a light source is directed across the
smoke chamber and is not normally reflected into the sensing
element. When smoke enters the chamber, the light beam is
scattered by the smoke and is reflected into the sensor. When
enough light is detected by the sensor, an alarm is activated. On
alarm, the Sounder is activated and the red LED will flash.

When
the smoke clears from the smoke chamber, the unit will
automatically reset itself.

Alarm Indications

Condition Sounder Indicator RF

No Smoke Silent Flash every Supervision

Smoke Alarm Flash every Alarm

Automatic Self Test Silent Flash every Supervision
Functioning Normally 40-50 s transmission

Automatic Self Test Chirp between Flash every Fire Trouble
Insufficient Sensitivity LED flashes 40-50 s transmission

Push-button Test Alarm Flash every Supervision
Functioning Normally 0.67 s transmission

Push-button Test Silent Flash every Fire Trouble
Insufficient Sensitivity 40-50 s transmission

Magnet-Reed-Switch Alarm Flash every Alarm
Test Functioning Normally 0.67 s transmission

Magnet-Reed-Switch Silent Flash every Fire Trouble
Test Insufficient 40-50 s transmission
Sensitivity

Low Battery Chirp simultaneous Flash every Fire Trouble

with LED flash 40-50 s transmission

Light Transmission

40-50 s transmission

every 12 min.

0.67 s transmission

every 12 min.

every 12 min.

Limitations of Smoke Detectors

While the Meridian Smoke Detector has been designed for reliability,
it is important to know that all smoke detectors have limitations.

• Smoke detectors will not work without power. If the batteries are
low, the smoke detector will not function. See “
below for important information on battery use.

• Smoke detectors can only generate an alarm when smoke gets
inside the Smoke Chamber; anything that prevents smoke from
entering the Smoke Chamber may prevent or delay an alarm.
Refer to the Guidelines for Locating Smoke Detectors on this
Instruction Sheet; it is important that smoke detectors be located
on at least every floor of the premises, preferably in every room.
It is also important to avoid obstructions, such as closed doors,
that may prevent smoke from reaching the unit. A smoke detector
will not detect a fire in the walls, in the chimney or on the roof of
a building until smoke enters the Smoke Chamber.

• Smoke detectors have certain obvious limitations: they may not
provide protection for someone smoking in bed, for children
playing with matches, or for sudden and violent explosions. A
smoke detector is a single part of overall fire safety precautions;
the smoke detector should never be seen as a substitute for a
complete fire safety program.

Battery Installation

Guidelines for Locating Smoke Detectors

Research has shown that all hostile fires in homes generate smoke
to a greater or lesser extent. Experiments with typical fires in homes
indicate that detectable quantities of smoke precede detectable
levels of heat in most cases. For these reasons, smoke detectors
should be installed outside of each sleeping area and on each
storey of the home.

The following information is for general guidance only and it is
recommended that local fire codes and regulations be consulted
when locating and installing smoke detectors.

It is recommended that additional smoke detectors beyond those
required for minimum protection be installed. Additional areas that
should be protected include: the basement; bedrooms, especially
where smokers sleep; dining rooms; furnace and utility rooms, and
any hallways not protected by the required units.

A smoke detector should be located between the sleeping area
and the rest of the home as in Figure 1. In homes with more than one
sleeping area, a smoke detector should be located outside of each
sleeping area, as in Figure 2. A smoke detector should be located
on each storey of the home, as in Figure 3.

Smoke from a fire generally rises to the ceiling, spreads out across
the ceiling surface, and begins to bank down away from the ceiling.
Because of this airflow behaviour, the smoke may not be able to
enter the corner where the ceiling and wall meet. In most cases, this
“dead” air space measures about 4 in. (10 cm) along the ceiling
from the corner and about 4 in. (10 cm) down the wall as shown in
Figure 4. Units should not be placed in the “dead” air space.

Locations to avoid:

• Do not locate smoke detectors at the top of peaked or gabled
ceilings; the “dead” air in these locations may prevent the unit
from detecting smoke.

• Avoid areas with turbulent airflow, such as near fans, doors or
windows. Rapid airflow around the unit may prevent smoke from
entering the unit.

• Do not locate smoke detectors in high humidity areas, such as in
bathrooms or attics. Also avoid areas where the temperature rises
above 38°C (100°F) or falls below 5°C (41°F).

• Do not locate smoke detectors in poorly ventilated garages
or kitchens; car exhaust or cooking smoke could cause
false alarms.

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Smoke detectors should always be installed in accordance with NFPA 72,
the National Fire Alarm Code. Smoke detectors should always be located
in accordance with Paragraph 2.1.1.1 of NFPA 72, Chapter 2.:

“2-2.1.1.1 Smoke detectors shall be installed outside of each separate
sleeping area in the immediate vicinity of the bedrooms and on each
additional story of the family living unit, including basements and excluding
crawl spaces and unfinished attics. In new construction, a smoke detector
also shall be installed in each sleeping room.”

Testing Your Smoke Detector

Follow the test procedure described here or contact your
Smoke Detector Dealer or Installer for testing instructions.

It is recommended that your entire alarm system be tested at
least once per week to verify the operation of all system
functions.

Smoke Detector Unit Test

To test the smoke detector, press and hold the Test Button on the
front of the unit. When the button is pressed, the unit’s alarm should
sound. When the button is released, the alarm should be silenced.
If this does not occur, check that the batteries are the correct type,
in good condition and are installed correctly (see the

Installation

Upon completing the functional testing of the smoke detector,
check the unit’s sensing chamber to ensure proper operation. To
test the sensing chamber, waft a lit cotton wick or punk stick
around the outside of the unit until a generous amount of smoke
enters the sensing chamber, or the unit alarms. If the smoke
detector does not function properly, call your smoke detector
installer or dealer for service.

section).

Battery