1
THIS USER’S MANUAL HAS BEEN RESIZED TO PRINT OUT ON 8-1/2 x 11” PAGES.
BLACK page numbers reference the original printed document.
RED page numbers reference this web version.
Models CO5120BN,
CO5120PDBN
M08-0002-000 Q 10/02
IMPORTANT! PLEASE READ CAREFULLY AND SAVE.
This user’s manual contains important information about your CO Alarm’s
operation. If you are installing this CO Alarm for use by others, you must
leave this manual—or a copy of it—with the end user.
USER’S MANUAL
AC POWERED CARBON
MONOXIDE ALARM
WITH BATTERY BACK-UP
Model CO5120BN
AC POWERED CARBON
MONOXIDE ALARM
WITH BATTERY BACK-UP
AND DIGITAL DISPLAY
Model CO5120PDBN
120VAC ~, 60Hz, 0.09A
TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Basic Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
How Your CO Alarm Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Understanding the Light and Horn Patterns . . . . . . . . . . . . . . . . . . . .1-2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4/2-3
Where to Install CO Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Where CO Alarms Should NOT Be Installed . . . . . . . . . . . . . . . . . . . . .2
How to Install Your CO Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4/3
Using the Optional Locking Features . . . . . . . . . . . . . . . . . . . . . . . . . .3-4/4
The Battery Compartment Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3/4
The Mounting Bracket Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
If Your CO Alarm Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
If the Alarm Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Using the Silence Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
The Latching Alarm Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Weekly Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Regular Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
What You Need To Know About CO . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7/6
What is CO? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Symptoms of CO Poisoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Finding the Source of CO After an Alarm . . . . . . . . . . . . . . . . . . . . . . .6
Potential Sources of CO in the Home . . . . . . . . . . . . . . . . . . . . . . . . . .6
How Can I Protect My Family? . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7/6
Underwriters Laboratories, Inc. UL2034 . . . . . . . . . . . . . . . . . . . . . . . . .7/6
General Limitations Of CO Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7/7
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7/7
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7/7
All Rights Reserved. © 2002 BRK Brands, Inc.
BRK Brands, Inc., 3901 Liberty Street Road, Aurora, IL 60504-8122
Consumer Affairs: (800) 323-9005 • www.brkelectronics.com
INTRODUCTION
BASIC SAFETY INFORMATION
• Dangers, Warnings, and Cautions alert you to important operating instructions or to potentially
hazardous situations. Pay special attention to these items.
• THIS IS NOT A SMOKE ALARM! This CO Alarm is designed to detect carbon monoxide from ANY
source of combustion. It is NOT designed to detect smoke, fire, or any other gas.
• This CO Alarm is approved for use in single-family residences. It is NOT designed for marine or RV
use.
•
This CO Alarm will only indicate the presence of carbon monoxide gas at the sensor. Carbon monoxide
gas may be present in other areas.
• This unit does not work without power. If the AC power fails, the battery back-up will power the
alarm for at least 7 days provided the 9V battery is fresh and correctly installed.
• The Silence Feature is for your convenience only and will not correct a CO problem. Always check
your home for a potential problem after any alarm. Failure to do so can result in injury or death.
• This CO Alarm should receive continuous 120VAC, 60 Hz, pure sine wave electrical power. (The
battery is meant for emergency back-up only). Do not use in an extension cord or outlet controlled
by a dimmer or switch. In order for the emergency battery back-up to work, a working (fresh) bat-
tery must be properly installed.
•
NEVER ignore any alarm. See “If Your CO Alarm Sounds” for more information on how to respond to
an alarm. Failure to respond can result in injury or death.
• Test this Carbon Monoxide Alarm once a week. If it ever fails to test correctly, have it replaced
immediately! If the CO Alarm is not working properly, it cannot alert you to a problem.
• This product is intended for use in ordinary indoor locations of family living units. It is not designed
to measure CO levels in compliance with Occupational Safety and Health Administration (OSHA)
commercial or industrial standards. Individuals with medical conditions that may make them more
sensitive to carbon monoxide may consider using warning devices which provide audible and visu-
al signals for carbon monoxide concentrations under 30 ppm. For additional information on carbon
monoxide and your medical condition contact your physician.
HOW YOUR CO ALARM WORKS
The Cover Of Your CO Alarm
1. Test/Silence Button
Scroll Button (CO5120PDBN)
2. POWER/ALARM Light (RED)
3. Air Vents
4. (Behind the Cover) Alarm Horn:
85dB audible alarm for test,
alarm, and unit malfunction
warning.
5. Digital Display (CO5120PDBN)
UNDERSTANDING THE LIGHT AND HORN PATTERNS (CO5120BN)
Condition LED (Red Light) Horn
POWER UP LED flashes on once, Horn “chirps”
then shines continuously once.
DURING TESTING LED flashes once every second Horn pattern:
during the test cycle 4 beeps, pause,
4 beeps, pause
LOW OR MISSING LED flashes once a minute Horn “chirps”
BATTERY once a minute
MISSING OR DEAD LED is OFF Horn is silent
BATTERY (DC back-
up disabled
WARNING: When the AC power is Off, if the battery is dead or missing, the
CO Alarm cannot work.
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