BRK electronic Carbon Monoxide Alarm CO250 User Manual

POTENTIAL SOURCES OF CO IN THE HOME  
TESTING & MAINTENANCE  
WEEKLY TESTING  
USER’S MANUAL  
HOW TO INSTALL THIS TAMPERPROOF CO ALARM  
The following conditions can result in transient CO situations:  
BATTERY POWERED  
CARBON MONOXIDE ALARM  
THE PARTS OF THIS ALARM  
1. Excessive spillage or reverse venting of fuel appliances caused by outdoor  
conditions such as:  
Test the CO Alarm once a week. If the CO Alarm ever fails to test  
correctly, have it replaced immediately! If the CO Alarm is not working  
properly, it cannot alert you to a problem.  
DO NOT stand close to the Alarm when the horn is sounding.  
Exposure at close range may be harmful to your hearing. When  
testing, step away when horn starts sounding.  
Tamperproof Bracket  
Tamperproof Locking Ring  
• Wind direction and/or velocity, including high, gusty winds. Heavy air in  
the vent pipes (cold/humid air with extended periods between cycles).  
1. “OPEN HERE” tab  
WITH TAMPERPROOF BRACKET AND 5-YEAR LITHIUM BATTERY  
2. Cover hinge  
• Negative pressure differential resulting from the use of exhaust fans.  
3. Test/Silence button  
Tamperproof Screw  
Mounting Hole “B”  
• Several appliances running at the same time competing for limited  
fresh air.  
4. Power/alarm indicator  
Push and hold the Test/Silence button on the cover until the LED flashes. The  
alarm horn will sound 4 beeps, a pause, then 4 beeps. The ALARM (RED) light  
will flash.  
• Vent pipe connections vibrating loose from clothes dryers, furnaces, or  
water heaters.  
• Obstructions in or unconventional vent pipe designs which can amplify  
the above situations.  
The alarm sequence should last 5-6 seconds. If it does not alarm, make sure  
fresh batteries are correctly installed, and test it again. If the unit still does not  
alarm, replace it immediately.  
Standard Screw  
Mounting Holes “A”  
Model CO250  
Fuel-burning appliances like: portable heater, gas or wood burning fireplace,  
gas kitchen range or cooktop, gas clothes dryer.  
2. Extended operation of unvented fuel burning devices (range, oven,  
fireplace).  
Cover Open  
If the alarm does not test properly:  
LISTED TO  
UL 2034  
Damaged or insufficient venting: corroded or disconnected water heater  
vent pipe, leaking chimney pipe or flue, or cracked heat exchanger, blocked  
or clogged chimney opening.  
1. Make sure the battery is installed correctly.  
2. Be sure the Alarm is clean and dust-free.  
3. Install a fresh 9V battery* and test the Alarm again.  
1. “Open Here”  
3. Temperature inversions, which can trap exhaust close to the ground.  
4. Car idling in an open or closed attached garage, or near a home.  
2. Test/Silence button  
STANDARD  
FOLLOW THESE SIMPLE STEPS!  
Prepare Alarm for activation  
1. Hold base firmly and pull up on cover tab marked “OPEN HERE.” This  
will open the hinged cover. The cover may unsnap from the base if it's  
opened too far. This will not damage the unit—the cover hinge snaps  
back into place easily.  
Improper use of appliance/device: operating a barbecue grill or vehicle in  
an enclosed area (like a garage or screened porch).  
3. CO alarm base  
4. “No Battery” tab  
5. Mounting slots  
These conditions are dangerous because they can trap exhaust in your  
home. Since these conditions can come and go, they are also hard to  
recreate during a CO investigation.  
IMPORTANT! PLEASE READ CAREFULLY AND SAVE.  
Transient CO Problems: “transient” or on-again-off-again CO problems can  
be caused by outdoor conditions and other special circumstances.  
DO NOT try fixing the Alarm yourself – this will void your warranty!  
If the CO Alarm is still not operating properly, and it is still under  
warranty, please see "How to Obtain Warranty Service" in the Limited  
Warranty. Install a new CO Alarm immediately.  
The Test/Silence button is the only proper way to test the CO Alarm.  
NEVER use vehicle exhaust! Exhaust may cause permanent damage  
and voids your warranty.  
This user’s manual contains important information about your Carbon  
Monoxide 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.  
6. Install 9V battery here  
7. Locking pin slot  
2. Activate the battery. With the cover open, remove the plastic “Battery  
Pull Tab”. Your alarm is now activated.  
REGULATORY INFORMATION FOR CO ALARMS  
M08-0217-008  
P
02/12 Printed in Mexico  
Why is this important? Because you need to be warned of a potential CO  
problem while you can still react in time. In many reported cases of CO  
exposure, victims may be aware that they are not feeling well, but become  
disoriented and can no longer react well enough to exit the building or get  
help. Also, young children and pets may be the first affected. The average  
healthy adult might not feel any symptoms when the CO Alarm sounds.  
However, people with cardiac or respiratory problems, infants, unborn babies,  
pregnant mothers, or elderly people can be more quickly and severely affected  
by CO. If you experience even mild symptoms of CO poisoning, consult your  
doctor immediately!  
WHAT LEVELS OF CO CAUSE AN ALARM?  
Once the battery is installed, the red power indicator light (behind the  
test button) will flash once a minute to show you the CO Alarm is  
working.  
Underwriters Laboratories Inc. Standard UL2034 requires residential CO  
Alarms to sound when exposed to levels of CO and exposure times as  
described below. They are measured in parts per million (ppm) of CO over  
time (in minutes).  
*For a list of acceptable replacement batteries, see “Regular Maintenance.”  
© 2012 BRK Brands, Inc. All rights reserved. Distributed by BRK Brands, Inc.  
3901 Liberty Street Road, Aurora, IL 60504-8122  
Consumer Affairs: (800) 323-9005  
This unit is designed to be  
mounted on the ceiling, or  
on the wall if necessary.  
3. Close the cover all the way.  
REGULAR MAINTENANCE  
To replace the battery, reinstall a new one so the terminals on the battery  
match the terminals on the CO Alarm. Match “+” to “+” and “-” to “-.”  
Push the battery in until it snaps in securely and cannot be shaken loose.  
If the battery is not snapped in completely, the unit cannot receive battery  
power. The CO Alarm may beep briefly when you install the battery—this  
is normal.  
To keep the CO Alarm in good working order:  
UL2034 Required Alarm Points*:  
Test it every week using the Test/Silence button.  
If the alarm is exposed to 400 ppm of CO, IT MUST ALARM BETWEEN  
4 and 15 MINUTES.  
Tools you will need:  
• Pencil  
INTRODUCTION  
BASIC SAFETY INFORMATION  
Vacuum the CO Alarm cover once a month, using the soft brush attach-  
ment. Never use water, cleaners, or solvents, since these may damage  
the unit. Test the CO Alarm again after vacuuming.  
• Drill with 3/16” (5 mm) drill bit  
• Screwdriver that accepts standard driver bits  
• Hammer  
If the alarm is exposed to 150 ppm of CO, IT MUST ALARM BETWEEN  
10 and 50 MINUTES.  
Standards: Underwriters Laboratories Inc. Single and Multiple Station carbon  
monoxide alarms UL2034.  
Replace the battery when the CO Alarm “chirps” about every minute (the  
low battery warning).  
If the alarm is exposed to 70 ppm of CO, IT MUST ALARM BETWEEN  
60 and 240 MINUTES.  
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.  
Insert Locking Pin  
According to Underwriters Laboratories Inc. UL2034, Section 1-1.2: “Carbon  
monoxide alarms covered by these requirements are intended to respond to  
the presence of carbon monoxide from sources such as, but not limited to,  
exhaust from internal-combustion engines, abnormal operation of fuel-fired  
appliances, and fireplaces. CO Alarms are intended to alarm at carbon  
monoxide levels below those that could cause a loss of ability to react to the  
dangers of Carbon Monoxide exposure.” This CO Alarm monitors the air at  
the Alarm, and is designed to alarm before CO levels become life threatening.  
This allows you precious time to leave the house and correct the problem.  
This is only possible if Alarms are located, installed, and maintained as  
described in this manual.  
Install the Alarm Locking Pin  
Locking Pin  
The low battery warning should last for 30 days, but you should replace the  
battery immediately to continue your protection.  
1. Using needle-nose pliers or a utility knife, detach locking pin from back of  
* Approximately 10% COHb exposure at levels of 10% to 95% Relative  
Humidity (RH).  
The unit is designed not to alarm when exposed to a constant level  
of 30 ppm for 30 days.  
alarm base.  
Choosing a replacement battery:  
2. Insert locking pin into the slot located on the front of the alarm as shown in  
the diagram.  
This CO Alarm requires one 9V alkaline battery. The following batteries are  
acceptable as replacements: Alkaline Batteries — Duracell MN1604 or  
Energizer 522; Lithium Batteries — Ultralife U9VL-J, U9VL-J-P. These  
replacement batteries are commonly available at local retail stores.  
This CO Alarm is approved for use in single-family residences.  
It is NOT designed for marine use.  
To unlock the cover to the base, remove pin to unlock and replace battery  
when required. Re-install the locking pin.  
CO Alarms are designed to alarm before there is an immediate life threat.  
Since you cannot see or smell CO, never assume it’s not present.  
Install the Tamperproof Bracket  
This CO Alarm will only indicate the presence of carbon monoxide gas  
at the sensor. Carbon monoxide gas may be present in other areas.  
An exposure to 100 ppm of CO for 20 minutes may not affect average,  
healthy adults, but after 4 hours the same level may cause headaches.  
Use only the replacement batteries listed. The unit may not operate properly  
with other batteries. Never use rechargeable batteries since they may not  
provide a constant charge.  
1. Hold the tamperproof bracket against the ceiling (or wall) and make a mark at the center of each of the three mounting  
Gas Detection at Typical Temperature and Humidity Ranges: The CO Alarm  
is not formulated to detect CO levels below 30 ppm typically. UL tested for  
false alarm resistance to Methane (500 ppm), Butane (300 ppm), Heptane  
(500 ppm), Ethyl Acetate (200 ppm), Isopropyl Alcohol (200 ppm) and Carbon  
Dioxide (5000 ppm). Values measure gas and vapor concentrations in parts  
per million.  
holes with a pencil. (Note: For wall mounting, make sure the arrows point up and the tab faces left. See illustration.)  
An exposure to 400 ppm of CO may cause headaches in average, healthy  
adults after 35 minutes, but can cause death after 2 hours.  
2. Put the unit where it won’t get covered with dust when you drill the mounting holes.  
3. Using a 3/16” (5 mm) drill bit, drill a hole through each pencil mark.  
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.  
NEVER ignore your Carbon Monoxide Alarm if it alarms. Refer to  
“If Your CO Alarm Sounds” for more information. Failure to do so  
can result in injury or death.  
Test the CO Alarm once a week. If the CO Alarm 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) commer-  
cial 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 visual signals for  
carbon monoxide concentrations under 30 ppm. For additional  
information on carbon monoxide and your medical condition contact  
your physician.  
DO NOT spray cleaning chemicals or insect sprays directly on or near  
the CO Alarm. DO NOT paint over the CO Alarm. Doing so may cause  
permanent damage.  
A
B
4. Insert the plastic screw anchors (in the plastic bag with screws) into the holes. Tap the screw anchors gently with a  
hammer, if necessary, until they are flush with the ceiling or wall.  
This CO Alarm measures exposure to CO over time. It alarms if CO levels  
are extremely high in a short period of time, or if CO levels reach a certain  
minimum over a long period of time. The CO Alarm generally sounds an alarm  
before the onset of symptoms in average, healthy adults.  
Audible Alarm: 85 dB minimum at 10 feet (3 meters).  
5. There are two types of screws provided. Two standard screws for mounting holes “A” and one tamperproof screw for  
mounting hole “B”. At this point only install and tighten the screws into the screw anchors for the two standard screw  
holes (“A”). Do not install the tamperproof screw yet.  
Household cleaners, aerosol chemicals, and other contaminants can affect  
the sensor. When using any of these materials near the CO Alarm, make sure  
the room is well ventilated.  
Install the CO Alarm onto the Tamperproof Mounting Bracket  
1. Make sure alarm is positioned as shown. The words “CARBON MONOXIDE ALARM” should be readable  
GENERAL LIMITATIONS OF CO ALARMS  
left to right.  
This CO Alarm is intended for residential use. It is not intended for  
use in industrial applications where Occupational Safety and Health  
Administration (OSHA) requirements for carbon monoxide detectors  
must be met.  
CO Alarms may not be heard. The alarm horn loudness meets or exceeds  
current UL standards of 85 dB at 10 feet (3 meters). However, if the CO Alarm  
is installed outside the bedroom, it may not wake up a sound sleeper or one  
who has recently used drugs or has been drinking alcoholic beverages. This  
is especially true if the door is closed or only partly open. Even persons who  
are awake may not hear the alarm horn if the sound is blocked by distance or  
closed doors. Noise from traffic, stereo, radio, television, air conditioner, or  
other appliances may also prevent alert persons from hearing the alarm horn.  
This CO Alarm is not intended for people who are hearing impaired.  
2. Line up the mounting slots on the back of the alarm and mate with the mounting tabs on the  
Tamperproof Bracket. Push down and slide alarm to the right to lock in position.  
3. Install the Tamperproof Locking Ring by sliding the pins into holes on the bracket. Install the  
tamperproof screw (#6-32x1 Spanner Screw) through the Locking Ring and Mounting Bracket  
and tighten with the supplied tamperproof screw bit (#6 spanner bit).  
WHAT YOU NEED TO KNOW ABOUT CO  
WHAT IS CO?  
CO is an invisible, odorless, tasteless gas produced when fossil fuels do not  
burn completely, or are exposed to heat (usually fire). Electrical appliances  
typically do not produce CO.  
CARBON MONOXIDE ALARM  
CO Alarms may not waken all individuals. If children or others do not readily  
waken to the sound of the CO Alarm, or if there are infants or family members  
with mobility limitations, make sure that someone is assigned to assist them  
in the event of an emergency.  
IF IN ALARM EVERYONE  
MOVE TO FRESH AIR  
4. Test the CO Alarm. See “Weekly Testing.”  
5. Keep tamperproof screw bit in a safe location. You will need it to remove the alarm to change the battery.  
These fuels include: Wood, coal, charcoal, oil, natural gas, gasoline,  
kerosene, and propane.  
CO Alarms will not work without power. This alarm requires a 9V alkaline  
battery to operate.  
CO Alarms are not a substitute for a smoke alarm. Although fire is a  
source of carbon monoxide, this CO Alarm does not sense smoke or fire. This  
CO Alarm senses CO that may be escaping unnoticed from malfunctioning  
furnaces, appliances, or other sources. Early warning of fire requires the  
installation of smoke alarms.  
HOW YOUR CO ALARM WORKS  
GENERAL INFORMATION  
Common appliances are often sources of CO. If they are not properly main-  
tained, are improperly ventilated, or malfunction, CO levels can rise quickly.  
CO is a real danger now that homes are more energy efficient. “Air-tight”  
homes with added insulation, sealed windows, and other weatherproofing  
can “trap” CO inside.  
CO Alarms for Solar or Wind Energy users and battery backup power  
systems: AC powered CO Alarms should only be operated with true or pure  
sine wave inverters. Operating this Alarm with most battery-powered UPS  
(uninterruptible power supply) products or square wave or “quasi sine wave”  
inverters will damage the Alarm. If you are not sure about your inverter or  
UPS type, please consult with the manufacturer to verify.  
IF YOUR CO ALARM SOUNDS, Continued  
“ALARM-MOVE TO FRESH AIR”  
WHERE TO INSTALL CO ALARMS, Continued  
In a Single-level Home:  
This CO Alarm does not operate without working batteries.  
Removing the batteries, or failure to replace them at the end of their  
service life, removes your protection.  
Install at least one CO Alarm near or within each separate sleeping area.  
For added protection, install an additional CO Alarm at least 20 feet  
(6 meters) away from the furnace or fuel burning heat source.  
CO Alarms are not a substitute for life insurance. Though these CO Alarms  
warn against increasing CO levels, BRK Brands, Inc. does not warrant or imply  
in any way that they will protect lives from CO poisoning. Homeowners and  
renters must still insure their lives.  
If you hear the alarm horn and the Red light is flashing,  
move everyone to a source of fresh air.  
SYMPTOMS OF CO POISONING  
These symptoms are related to CO POISONING and should be discussed  
with ALL household members.  
A CO Alarm measures the CO levels in the air. It will alarm if CO levels rise  
quickly (if the heat exchanger on your furnace breaks, for example), or if CO  
is consistently present (a slow CO leak on a fuel-burning appliance).  
This Carbon Monoxide Alarm features a permanently installed sensor and an  
85 dB alarm horn. It also has a silence feature to temporarily quiet the alarm  
horn.  
DO NOT disconnect the battery from the CO Alarm!  
This CO Alarm will not sense carbon monoxide that does not reach the  
sensor. This CO Alarm will only sense CO at the sensor. CO may be present  
in other areas. Doors or other obstructions may affect the rate at which CO  
reaches the CO Alarm. For this reason, if bedroom doors are usually closed  
at night, we recommend you install a CO Alarm in each bedroom and in the  
hallway between them.  
In a Multi-level Home:  
Install at least one CO Alarm near or within each separate sleeping area.  
For added protection, install at least one CO Alarm on each level of the  
home.  
For added protection, install an additional CO Alarm at least 20 feet  
(6 meters) away from the furnace or fuel burning heat source.  
CO Alarms have a limited life. Although the CO Alarm and all of its parts  
have passed many stringent tests and are designed to be as reliable as  
possible, any of these parts could fail at any time. Therefore, you must test  
your CO Alarm weekly.  
Mild Exposure:  
Alarms have various limitations. See "General Limitations of CO Alarms"  
for details.  
Slight headache, nausea, vomiting, fatigue (“flu-like” symptoms).  
Medium Exposure:  
Throbbing headache, drowsiness, confusion, fast heart rate.  
CO Alarms are not foolproof. Like all other electronic devices, CO Alarms  
have limitations. They can only detect CO that reaches their sensors. They  
may not give early warning to rising CO levels if the CO is coming from a  
remote part of the home, away from the CO Alarm.  
CO Alarms may not sense CO on another level of the home. For example,  
a CO Alarm on the second level, near the bedrooms, may not sense CO in the  
basement. For this reason, one CO Alarm may not give adequate warning.  
Complete coverage is recommended. Place CO Alarms on each level of the  
home.  
In Mobile Homes:  
USING THE SILENCE FEATURE  
Extreme Exposure:  
Convulsions, unconsciousness, heart and lung failure. Exposure to carbon  
monoxide can cause brain damage, death.  
UNDERSTANDING YOUR CO ALARM  
Install CO Alarms on inside walls ONLY. Uninsulated outside walls and  
roofs of mobile homes often transfer heat and cold from outdoors. The  
Alarm should be located at least 152 mm (6 inches) from all exterior walls  
and at least 305 mm (12 inches) from supply or return vents.  
WELCOME CHIRP  
Horn chirps and light blinks once when batteries are first connected.  
• 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.  
• NEVER remove the batteries from your CO Alarm to silence the  
horn. Use the silence feature. Removing the batteries removes  
your protection! See “If Your CO Alarm Sounds” for details on  
responding to an alarm.  
Some individuals are more sensitive to CO than others, including people  
with cardiac or respiratory problems, infants, unborn babies, pregnant  
mothers, or elderly people can be more quickly and severely affected by  
CO. Members of sensitive populations should consult their doctors for  
advice on taking additional precautions.  
ALARM RECEIVING BATTERY POWER  
Light flashes every minute. Horn is silent.  
WHERE CO ALARMS SHOULD NOT BE  
INSTALLED  
TROUBLESHOOTING GUIDE  
LOW BATTERY WARNING  
PROBLEM...  
THIS MEANS...  
YOU SHOULD...  
The light continues to flash (RED) and the horn also “chirps” once every  
minute. This warning should last for up to 30 days, but you should replace  
the batteries as soon as possible.  
DO NOT LOCATE THIS CO ALARM:  
In garages, kitchens, furnace rooms, or in any extremely dusty, dirty or  
greasy areas.  
The light continues to flash (RED) and the horn  
“chirps” once every minute.  
Low battery warning.  
Install a new 9V alkaline battery*.  
The Silence Feature is intended to temporarily silence your CO Alarm’s alarm  
horn while you correct the problem—it will not correct a CO problem. While  
the alarm is silenced it will continue to monitor the air for CO.  
FINDING THE SOURCE OF CO AFTER AN ALARM  
Carbon monoxide is an odorless, invisible gas, which often makes it difficult  
to locate the source of CO after an alarm. These are a few of the factors that  
can make it difficult to locate sources of CO:  
Within 5 feet (1.5 meters) of any cooking appliance.  
DURING TESTING  
The light flashes (RED) and the horn sounds  
3 “chirps” every minute.  
MALFUNCTION SIGNAL. CO Alarm needs to be  
CO Alarms under warranty should be returned to  
manufacturer for replacement. See “Limited  
Warranty” for details.  
In extremely humid areas. This alarm should be at least 10 feet (3 meters)  
from a bath or shower, sauna, humidifier, vaporizer, dishwasher, laundry  
room, utility room or other source of high humidity.  
Light flashes Red with the horn pattern (4 beeps, pause, 4 beeps), simulating  
a CO Alarm condition.  
When CO reaches alarm levels the alarm will sound— repeating horn pattern:  
4 beeps, a pause, 4 beeps, etc. Press and hold the Test/Silence button until  
the horn is silent. The initial Silence cycle will last approximately 4 minutes.  
replaced.  
House well ventilated before the investigator arrives.  
Problem caused by “backdrafting.”  
Transient CO problem caused by special circumstances.  
CO ALARM  
In areas where temperature is colder than 40˚F (4.4˚C) or hotter than 100˚F  
(37.8˚C). These areas include unconditioned crawl spaces, unfinished  
attics, uninsulated or poorly insulated ceilings, porches, and garages.  
The light flashes (RED) and the horn sounds  
5 “chirps” every minute.  
END OF LIFE SIGNAL. CO Alarm needs to be  
Immediately replace the CO Alarm.  
NOTE: After initial 4-minute Silence cycle, the CO Alarm re-evaluates present  
CO levels and responds accordingly. If CO levels remain potentially dangerous  
—or start rising higher—the horn will start sounding again.  
Sensor has detected enough CO to trigger an alarm. Light flashes rapidly  
and horn sounds loudly (repeating 4 beeps, pause). See “If Your CO Alarm  
Sounds” for details. During an alarm, move everyone to a source of fresh  
air. DO NOT move the CO Alarm!  
replaced.  
Because CO may dissipate by the time an investigator arrives, it may be  
difficult to locate the source of CO. BRK Brands, Inc. shall not be obligated  
to pay for any carbon monoxide investigation or service call.  
CO Alarm goes back into alarm 4 minutes after you  
press the Test/Silence button.  
CO levels indicate a potentially dangerous situation.  
IF YOU ARE FEELING SYMPTOMS OF CO  
In turbulent air, like near ceiling fans, heat vents, air conditioners,  
fresh air returns, or open windows. Blowing air may prevent CO from  
reaching the sensors.  
POISONING, EVACUATE your home and call 911 or  
the Fire Department. If not, press the Test/Silence  
button again and keep ventilating your home.  
While the detector is silenced:  
CO ALARM REQUIRES SERVICE (MALFUNCTION SIGNAL)  
The light flashes (RED) and the horn sounds 3 “chirps” every minute.  
CO Alarm needs to be replaced.  
If the CO Alarm...  
This means...  
Outside the Mobile Home.  
In direct sunlight.  
HOW CAN I PROTECT MY FAMILY?  
A CO Alarm is an excellent means of protection. It monitors the air and  
sounds a loud alarm before carbon monoxide levels become threatening  
for average, healthy adults.  
Is silent for only 4 minutes, then  
starts sounding loudly—4 beeps,  
pause, 4 beeps, pause  
CO levels are still potentially  
CO Alarm sounds frequently even though no high  
levels of CO are revealed in an investigation.  
The CO Alarm may be improperly located. Refer to  
“Where to Install CO Alarms.”  
Relocate your alarm. If frequent alarms continue,  
have home rechecked for potential CO problems.  
You may be experiencing an intermittent CO problem.  
dangerous.  
CO ALARM HAS REACHED ITS END OF LIFE  
The light flashes (RED) and the horn sounds 5 “chirps” every minute.  
CO Alarm needs to be replaced.  
• This CO Alarm is designed for use inside a single-family home or  
apartment. It is not meant to be used in common lobbies, hallways,  
or basements of multi-family buildings unless working CO Alarms  
are also installed in each family living unit. CO Alarms in common  
areas may not be heard from inside individual family living units.  
• This CO Alarm alone is not a suitable substitute for complete  
detection systems in places which house many people, like hotels  
or dormitories, unless a CO Alarm is also placed in each unit.  
• DO NOT use this CO Alarm in warehouses, industrial or commercial  
buildings, special-purpose non-residential buildings, or airplanes.  
This CO Alarm is specifically designed for residential use, and may  
not provide adequate protection in non-residential applications.  
A CO Alarm is not a substitute for proper maintenance of home appliances.  
To help prevent CO problems and reduce the risk of CO poisoning:  
If the CO Alarm...  
This means...  
*For a list of acceptable replacement batteries, see “Page 4: Regular Maintenance.”  
Remains silent after you pressed  
the Test/Silence button  
CO levels are dropping.  
Clean chimneys and flues yearly. Keep them free of debris, leaves, and  
nests for proper air flow. Also, have a professional check for rust and  
corrosion, cracks, or separations. These conditions can prevent proper  
air movement and cause backdrafting. Never “cap” or cover a chimney  
in any way that would block air flow.  
If you have any questions that cannot be answered by reading this manual, call Consumer Affairs at 1-800-323-9005.  
INSTALLATION  
Read “Where To Install CO Alarms” before starting.  
SILENCING THE LOW BATTERY WARNING  
Before you start installation, find the pair of self-adhesive labels included  
with this CO Alarm. On each label write in the phone number of your emer-  
gency responder (like 911) and a qualified appliance technician. Place one  
label near the CO Alarm, and the other label in the “fresh air” location you  
plan to go if the alarm sounds.  
Test and maintain all fuel-burning equipment annually. Many local gas or  
oil companies and HVAC companies offer appliance inspections for a  
nominal fee.  
This silence feature can temporarily quiet the low battery warning “chirp” for  
up to 8 hours. You can silence the low battery warning “chirp” by pressing  
the Test/Silence button. The horn will chirp, acknowledging that the low  
battery silence feature has been activated.  
LIMITED WARRANTY  
BRK Brands, Inc. ("BRK") the maker of BRK® brand and First Alert® brand products, warrants that for a period of seven years from the date of purchase, this product  
will be free from defects in material and workmanship. BRK, at its option, will repair or replace this product or any component of the product found to be defective  
during the warranty period. Replacement will be made with a new or remanufactured product or component. If the product is no longer available, replacement may  
be made with a similar product of equal or greater value. This is your exclusive warranty.  
Make regular visual inspections of all fuel-burning appliances. Check appli-  
ances for excessive rust and scaling. Also check the flame on the burner  
and pilot lights. The flame should be blue. A yellow flame means fuel is not  
being burned completely and CO may be present. Keep the blower door  
on the furnace closed. Use vents or fans when they are available on all  
fuel-burning appliances. Make sure appliances are vented to the outside.  
Do not grill or barbecue indoors, or in garages or on screen porches.  
After 8 hours, the low battery “chirp” will resume. Replace the battery as  
soon as possible; this unit will not operate without battery power!  
To deactivate this feature: Press the Test/Silence button again. The unit will  
go into Test Mode and the low battery warning will resume (LED flashes and  
unit sounds “chirp” once a minute.)  
This warranty is valid for the original retail purchaser from the date of initial retail purchase and is not transferable. Keep the original sales receipt. Proof of purchase  
is required to obtain warranty performance. BRK dealers, service centers, or retail stores selling BRK products do not have the right to alter, modify or any way  
change the terms and conditions of this warranty.  
WHERE TO INSTALL CO ALARMS  
IF YOUR CO ALARM SOUNDS  
The National Fire Protection Association (NFPA) recommends that a CO Alarm  
should be centrally located outside of each separate sleeping area in the  
immediate vicinity of the bedrooms. For added protection, install additional  
CO Alarms in each separate bedroom, and on every level of your home.  
This warranty does not cover normal wear of parts or damage resulting from any of the following: negligent use or misuse of the product, use on improper voltage  
or current, use contrary to the operating instructions, disassembly, repair or alteration by anyone other than BRK or an authorized service center. Further, the  
warranty does not cover acts of God, such as fire, flood, hurricanes, and tornadoes. The Lithium Battery supplied with this unit is warranted to last for five years.  
If you cannot silence the low battery warning, replace the battery  
immediately.  
Actuation of your CO Alarm indicates the presence of carbon monoxide  
(CO) which can kill you. In other words, when your CO Alarm sounds,  
you must not ignore it!  
Check for exhaust backflow from CO sources. Check the draft hood  
on an operating furnace for a backdraft. Look for cracks on furnace  
heat exchangers.  
If your bedroom hallway is longer than 40 feet (12 meters), install a CO Alarm  
at BOTH ends of the hallway.  
BRK shall not be liable for any incidental or consequential damages caused by the breach of any express or implied warranty. Except to the extent prohibited by  
applicable law, any implied warranty of merchantability or fitness for a particular purpose is limited in duration to the duration of the above warranty. Some states,  
provinces, or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages or limitations on how long an implied warranty lasts, so  
the above limitations or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to  
state, or province to province.  
Check the house or garage on the other side of shared wall.  
This alarm can be installed on the wall or ceiling. If the alarm is to be wall  
mounted it is recommended that the unit be mounted with hinge down so  
the words "Carbon Monoxide Alarm" is readable.  
SILENCING THE END OF LIFE SIGNAL  
IF THE ALARM SIGNAL SOUNDS:  
1. Operate the Test/Silence button.  
Keep windows and doors open slightly. If you suspect that CO is escaping  
into your home, open a window or a door. Opening windows and doors  
can significantly decrease CO levels.  
This silence feature can temporarily quiet the End of Life warning “chirp” for  
up to 2 days. You can silence the End of Life warning “chirp” by pressing the  
Test/Silence button. The horn will chirp, acknowledging that the End of Life  
silence feature has been activated.  
2. Call your emergency services, fire department or 911. Write down the  
number of your local emergency service here:  
How to Obtain Warranty Service  
In addition, familiarize yourself with all enclosed materials. Read this  
manual in its entirety, and make sure you understand what to do if your  
CO Alarm sounds.  
Service: If service is required, do not return the product to your retailer. In order to obtain warranty service, contact the Consumer Affairs Division at 1-800-323-9005,  
7:30 AM to 5:00 PM, Central Standard Time, Monday through Friday. To assist in serving you, please have the model number and date of purchase available when  
calling. For Warranty Service return to: 25 Spur Drive, El Paso, TX 79906  
_________________________________________________________________  
After approximately 2 days, the End of Life “chirp” will resume.  
3. Immediately move to fresh air—outdoors or by an open door or window.  
Do a head count to check that all persons are accounted for. Do not re-  
enter the premises, or move away from the open door or window until the  
emergency services responder has arrived, the premises have been aired  
out, and your CO Alarm remains in its normal condition.  
After approximately 2-3 weeks the End of Life warning cannot be silenced.  
Battery: BRK Brands, Inc. makes no warranty, express or implied, written or oral, including that of merchantability or fitness for any particular purpose, with respect  
to battery.  
BEDROOM  
BEDROOM  
KITCHEN  
BEDROOM  
4. After following steps 1-3, if your CO Alarm reactivates within a 24-hour  
period, repeat steps 1-3 and call a qualified appliance technician to  
investigate for sources of CO from fuel-burning equipment and appliances,  
and inspect for proper operation of this equipment. If problems are  
identified during this inspection have the equipment serviced immediately.  
Note any combustion equipment not inspected by the technician, and  
consult the manufacturers’ instructions, or contact the manufacturers  
directly, for more information about CO safety and this equipment. Make  
sure that motor vehicles are not, and have not, been operating in an  
attached garage or adjacent to the residence. Write down the number  
of a qualified appliance technician here:  
For your records, please record:  
Replace alarm 7 years after installation. Please write the date in the  
space provided:  
_____________/____________Month/Year  
The alarm will also provide an audible End-of-Life Signal approximately  
7 years after installation to remind you to replace the unit.  
GARAGE  
HALL  
LIVING ROOM  
Date Purchased: _______________Where Purchased: ___________________  
BASEMENT  
The End-of-Life Signal can be silenced for up to 2 days. Do not unplug  
the alarm or remove the batteries until you get replacement.  
Date Installed: ____________/____________Month/Year  
REQUIRED TO MEET NFPA RECOMMENDATIONS  
First Alert® is a registered trademark of the First Alert Trust.  
Printed in Mexico M08-0217-008  
P
02/12  
SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS  
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