BRK electronic Smoke Alarm GCO1 User Manual

USER’S MANUAL  
PLUG-IN EXPLOSIVE GAS AND CARBON MONOXIDE  
ALARM WITH BATTERY BACK-UP AND SILENCE FEATURE  
TABLE OF CONTENTS  
Basic Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3  
Where To Install This Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2  
Where This Alarm Should Not Be Installed . . . . . . . . . . . . . . . . . . . . . . . .2  
Before You Begin Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2  
How To Install This Gas/CO Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3  
How Your Alarm Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3  
If Your Gas/CO Alarm Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4  
What To Do if CO is Detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3  
What To Do if Explosive Gas is Detected . . . . . . . . . . . . . . . . . . . . . . . . . .3  
Using the Silence Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3  
Using the Remote Control Test/Silence Feature . . . . . . . . . . . . . . . . . . . .3  
Using the Peak CO Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4  
Understanding the Light, Horn, and Display Patterns . . . . . . . . . . . . . . . .4  
Weekly Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Regular Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
120VAC  
~
60Hz, 0.25 A  
What You Need To Know About CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6  
What is CO? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Symptoms of CO Poisoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Finding the Source of CO After an Alarm . . . . . . . . . . . . . . . . . . . . . . . . .5  
Potential Sources of CO in the Home . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
How Can I Protect My Family From CO Poisoning? . . . . . . . . . . . . . . . . .6  
Regulatory Information For Explosive Gas/CO Alarms . . . . . . . . . . . . . . .6  
Regulatory Information for CO Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . .6  
Regulatory Information for Explosive Gas Alarms . . . . . . . . . . . . . . . . . . .6  
IMPORTANT! PLEASE READ CAREFULLY AND SAVE.  
This unit was shipped with a user’s manual that contains important  
information about its operation. If you are installing this unit for use by others,  
you must leave this manual—or a copy of it—with the end user.  
Printed in Mexico  
Model GCO1  
M08-0123-000  
Q
05/05  
All Rights Reserved. © 2005 BRK Brands, Inc.  
BRK Brands, Inc., 3901 Liberty Street Road, Aurora, IL 60504-8122  
Consumer Affairs: (800) 323-9005 • www.brkelectronics.com  
General Limitations Of Explosive Gas/CO Alarms . . . . . . . . . . . . . . . . . . .6  
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
BASIC SAFETY INFORMATION  
INSTALLATION  
WHERE TO INSTALL THIS ALARM  
Dangers, Warnings, and Cautions alert you to important operating  
instructions or to potentially hazardous situations. Pay special  
attention to these items.  
For Gas Alarms, mounting depends on the type of explosive gas you intend  
to detect.  
Natural Gas (methane) is typically supplied through a main utility line  
connected to your home. If you do not live in a rural area you are likely to  
be a user of natural gas. Natural gas is a fossil fuel consisting mainly of  
Methane. Methane is much lighter than air and will rise rapidly in air. If you  
are a user of natural gas, the Alarm should be mounted between 6 and 12  
inches (152mm and 305 mm) away from the ceiling (using cord feature) to  
ensure the earliest opportunity to detect a leak.  
This combination Explosive Gas/Carbon Monoxide Alarm has two  
separate alarms. The CO Alarm is not designed to detect fire or any  
other gas. It will only indicate the presence of carbon monoxide gas  
at the sensor. Carbon monoxide gas may be present in other areas.  
The Explosive Gas Alarm will only indicate the presence of explosive  
gas that reaches the sensor. The Explosive Gas Alarm is not designed  
to sense smoke, heat or flames.  
Do not stand too close to the unit when the alarm is sounding. It is  
loud to wake you in an emergency. Exposure to the horn at close  
range may harm your hearing.  
Propane is typically supplied to homes by delivery truck in liquid form and  
stored near the home in propane tanks. Propane is used by homes in rural  
areas that do not have natural gas service. Since propane is the most  
commonly used Liquefied Petroleum Gas (LPG), propane and LP-Gas are  
often used synonymously. Unlike natural gas, propane is heavier than air  
and will collect at lower levels. If you are a user of propane, the Alarm  
should be mounted near the floor (using the direct plug-in feature) to  
ensure the earliest opportunity to detect a leak.  
Do not paint over the unit. Paint may clog the openings to the sensing  
chambers and prevent the unit from operating properly.  
Both propane and natural gas are colorless and odorless. For safety  
reasons, an ordorant (Mercaptan) is added so that any leak can be detect-  
ed by smell. The common detection threshold for smelling the gases is  
around 20% of the Lower Explosion Limit (LEL). This can vary greatly  
depending on the individuals sense of smell and how long they have been  
exposed to it. The LEL of each of these gases defines the bottom range of  
flammability for the gas. Your Alarm is calibrated to sound before 25% of  
the LEL of either gas detected.  
This unit must be powered by a 24-hour circuit. Be sure the circuit  
cannot be turned off by a switch, dimmer, or ground fault circuit  
interrupter. Failure to connect this unit to a 24-hour circuit may  
prevent it from providing constant protection.  
This Alarm must have AC or battery power to operate. If AC power  
fails and the battery is dead or missing, the alarm cannot operate.  
The Alarm will check for the presence of explosive gas at the sensor  
less frequently when powered by the back-up battery. Explosive gas  
could be present during the period between checks without going  
into alarm, especially during a condition that results in a rapid  
buildup of explosive gas.  
Test the Alarm once a week. If the Alarm ever fails to test correctly,  
have it replaced immediately! If the Alarm is not working properly, it  
cannot alert you to a problem.  
Therefore, it is possible that you may smell gas before the Alarm is  
activated. If you are not sure which gas your home uses, contact your  
utility company.  
For CO Alarms, 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 combination Carbon Monoxide and Explosive Gas Alarm is  
intended for residential use and is not suitable for use in hazardous  
locations as defined in the National Electrical Code.  
In general, install combination Explosive Gas and Carbon Monoxide  
Alarms:  
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 visual signals for carbon  
monoxide concentrations under 30 ppm. For additional information on  
carbon monoxide and your medical condition contact your physician.  
WHERE YOU CAN HEAR THE ALARM FROM ALL SLEEPING AREAS  
In or near bedrooms and living areas or wherever you suspect a gas or  
CO exposure is likely.  
On each level of a multi-level home.  
Improper location can affect the sensitive electronic components in this Alarm.  
Please see Where this Alarm Should Not Be Installed.  
Recommended Placement  
DINING ROOM  
KITCHEN  
BEDROOM BEDROOM  
LIVING ROOM  
BEDROOM  
Continued...  
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TEST THE ALARM  
WHAT TO DO IF EXPLOSIVE GAS IS DETECTED  
1. Make sure the Alarm is receiving AC power. Under normal operation, the Green  
indicator light will shine continuously. If the Green power indicator light does  
not light, recheck connections. If connections are correct and the Green  
power indicator still does not light, the unit should be replaced immediately.  
If you hear the alarm horn sound one beep per second, gas has  
been detected. The word GAS will be displayed. Evacuate everyone  
from the building.  
2. Press and hold the test button until the alarm sounds. You will hear the  
signal that indicates the presence of explosive gas followed by the signal  
for carbon monoxide.  
1. Leave the house immediately, opening doors and windows as you leave.  
2. Do not use your telephone or appliances. Do not turn any light switches off  
or on. Any spark or flame could ignite the gas.  
3. Call 911 and your gas company from a phone that is away from your home.  
4. Do not re-enter the area until the source of the leak is found and corrected.  
When testing the Alarm, have someone else check that the Alarm can be  
heard easily from the sleeping areas. The unit should be located where it  
can wake you if it alarms at night.  
• If the unit alarms and you are not testing the unit, it is warning you  
of a potentially dangerous situation that requires your immediate  
attention. NEVER ignore any alarm. Ignoring the alarm may result in  
injury or death.  
HOW YOUR ALARM WORKS  
THE COVER OF YOUR ALARM  
• Never disconnect the power to quiet an unwanted alarm.  
Disconnecting the power disables the Alarm. This will remove  
your protection.  
1. Test/Silence Button:  
Press and hold to activate  
test, or to silence the  
alarm.  
Alarms have various limitations. See "General Limitations of Gas/CO  
Alarms" for details.  
2. POWER Light (GREEN)  
2
3. Display  
3
4. (Behind the Cover) Alarm  
Horn: 85dB audible alarm  
for test, alarm, and unit  
malfunction warning.  
USING THE SILENCE FEATURE  
N
EVER disconnect the power to your Alarm to silence the horn—use the  
Silence Feature. Disconnecting the Alarm removes your protection!  
5. Display Button: Press to  
recall highest CO level  
The Silence Feature is intended to temporarily silence the horn while  
you identify and correct the problem.  
1
recorded  
To use the Silence Feature, press the Test/Silence button until the horn  
is silent.  
6. Battery Compartment  
4
If the Test/Silence button is pressed while the Alarm is in the silence  
mode, the alarm will start sounding again.  
5
6
WHEN THE GAS ALARM IS SILENCED...  
The Alarm will remain silent for approximately 2 minutes and then return to  
normal operation. If the gas has not cleared within the silence period, the unit  
will go back into alarm.  
IF YOUR GAS/CO ALARM SOUNDS  
WHAT TO DO IF CARBON MONOXIDE IS DETECTED  
WHEN THE CO ALARM IS SILENCED...  
The CO Alarm will remain silent for up to 4 minutes. While the Alarm is  
silenced, it will continue to monitor the air for CO. After 4 minutes, if CO levels  
remain potentially dangerous the horn will start sounding again.  
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!  
The Silence Feature is intended to temporarily silence the Alarm horn. It will  
not correct a CO or gas problem.  
IF THE CO ALARM SOUNDS:  
1. Operate the Test/Silence button.  
2. Call your emergency services, fire department or 911. Write down the  
number of your local emergency service here:  
USING THE REMOTE CONTROL TEST/SILENCE FEATURE  
Using the VOLUME or CHANNEL buttons on most remote controls, you can  
test or silence this gas/CO Alarm from up to 12 feet (3.6 meters) away.  
_______________________________________________________________  
To Test or Silence the Alarm:  
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.  
1. Make sure you have a clear path between you and  
the Alarm, free of any obstructions.  
2. Point the remote at the front of the Alarm.  
3. Press the VOLUME or CHANNEL button for at least  
5 seconds.  
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 identi-  
fied 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:  
If the Alarm does not respond to your remote control:  
You may be standing too far away.  
Your remote may not be compatible.  
You did not hold the button on your remote for at  
least 5 seconds.  
AC power must be present to Silence the low battery chirp.  
_______________________________________________________________  
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SILENCING THE LOW BATTERY WARNING  
This Silence Feature can temporarily quiet the low battery warning “chirp” for  
up to 8 hours if AC power is present. You can silence the low battery warning  
“chirp” two ways:  
USING THE PEAK CO MEMORY  
The CO Memory Feature lets you check the highest level of CO recorded.  
To check CO Memory:  
1. Press the Display button until the peak CO level is displayed.  
1. Manually: Press the Test/Silence button on the Alarm cover until you see  
To clear CO Memory:  
the Green LED flicker, acknowledging the button-press.  
1. While checking CO memory, press or hold the Display  
button until “CLEAR” is displayed.  
2. Using Your Remote Control: Standing no further than 12 feet (3.6 meters)  
away from the Gas/CO Alarm, aim your IR remote at the Alarm and press  
the CHANNEL or VOLUME button for at least 3-5 seconds.  
2. Press or hold the Display button until the CO Memory is  
cleared.  
The display will flash “SILENCE” for 8 hours while the low battery warning  
“chirp” silence feature is activated. After 8 hours, the low battery “chirp” will  
resume. The Alarm will continue to operate as long as AC power is supplied.  
However, replace the battery as soon as possible, to maintain protection in  
event of a power outage.  
NOTE: The highest CO level will be saved, even after a power interruption,  
until you clear it. DO NOT clear the CO Memory reading if you plan to call  
someone to investigate a CO problem! Clear the CO Memory reading only  
after the investigator has checked your home.  
UNDERSTANDING THE LIGHT, HORN, AND DISPLAY PATTERNS  
Condition  
LED  
Horn  
Display  
Silent  
All segments  
NORMAL AC POWER  
LED is Green.  
of display are  
turned on for  
a short time  
upon initial  
power. Then  
the battery level icon is displayed.  
BATTERY BACK-UP POWER  
DURING TESTING  
LED is Off, flashing Green once every  
45 seconds  
Silent  
All segments of display are turned  
On for a short time upon initial  
power. Then the battery level icon is  
displayed flashing.  
LED flashes Red in sync with the  
horn, simulating an Alarm condition:  
first gas then CO  
First, the horn pattern for gas alarm  
(1 beep every second) is issued, and  
then the CO alarm horn pattern (4  
beeps, pause, 4 beeps) is issued.  
During the simulated  
gas alarm, “GAS” is  
displayed along with  
a full alarm level.  
During the simulated  
CO alarm, CO” is  
displayed along with  
a full alarm level.  
Several ppm CO  
levels are also  
displayed and  
the alarm level is  
shown increasing.  
A chirp is issued about every  
minute.  
Battery icon will show  
an empty icon.  
LOW OR MISSING BATTERY  
Normal  
Repeating 1 beep every second  
Repeating 4 beeps, pause  
GAS, a full level, and “EVACUATE.  
GAS ALARM CONDITION  
LED flashes Red in sync with horn  
LED flashes Red in sync with horn  
CO” alternating  
with the ppm  
number, a full level,  
and “EVACUATE.  
CARBON MONOXIDE ALARM  
Normal  
CO” alternating with the ppm number.  
The level will indicate relative CO  
exposure level.  
PRE-ALARM CONDITION  
CO IS PRESENT  
Normal  
MALFUNCTION  
LED flashing Green 3 times in sync  
with 3 rapid chirps  
3 rapid chirps every minute  
Silent  
ERROR” is displayed.  
LOW BATTERY SILENCE  
LED is Green.  
“SILENCE” is displayed.  
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SYMPTOMS OF CO POISONING  
WEEKLY TESTING  
These symptoms are related to CO POISONING and should be discussed with  
ALL household members.  
NEVER use an open flame of any kind to test this unit. You might  
accidentally damage or set fire to the unit or to your home. The  
built-in test switch accurately tests the unit’s operation as required  
by Underwriters Laboratories, Inc. (UL). NEVER use vehicle exhaust!  
Exhaust may cause permanent damage and voids your warranty.  
Mild Exposure: Slight headache, nausea, vomiting, fatigue (flu-like” symptoms).  
Medium Exposure: Throbbing headache, drowsiness, confusion, fast heart rate.  
Extreme Exposure: Convulsions, unconsciousness, heart and lung failure.  
Exposure to Carbon Monoxide can cause brain damage, death.  
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.  
This Gas/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 Gas/CO Alarm generally sounds an  
alarm before the onset of symptoms in average, healthy adults. 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 Gas/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 experi-  
ence even mild symptoms of CO poisoning, consult your doctor immediately!  
It is important to test this unit every week to make sure it is working  
properly. You can test this Gas/CO Alarm two ways:  
1. Manually: Press the Test/Silence button on the Alarm  
cover until alarm sounds.  
2. Remote Control: Aim your remote control at the Alarm  
and press the CHANNEL or VOLUME button.  
During testing, you will hear a loud, repeating horn pattern:  
1 beep every second, while the Red LED flashes and the  
display shows “GAS. Then you will hear a loud, repeating  
horn pattern: 4 beeps, pause, 4 beeps, pause, while the Red  
LED flashes and the display shows “CO” with an increasing  
CO ppm number.  
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:  
If the Alarm does not test properly:  
1. Make sure the AC power is applied and battery is fresh and installed  
correctly.  
2. Test the unit again.  
If the Alarm is still not working properly, replace it immediately. Refer to the  
“Limited Warranty” at the end of this manual.  
House well ventilated before the investigator arrives.  
Problem caused by “backdrafting.”  
Transient CO problem caused by special circumstances.  
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.  
If there is still a problem, do not try to fix the Alarm yourself. This will  
void your warranty!  
POTENTIAL SOURCES OF CO IN THE HOME  
Fuel-burning appliances  
like: portable heater, gas or  
wood burning fireplace, gas  
kitchen range or cooktop,  
gas clothes dryer.  
REGULAR MAINTENANCE  
Use only the replacement batteries listed below. The unit may not operate  
properly with other batteries. Never use rechargeable batteries since they  
may not provide a constant charge.  
Damaged or insufficient  
venting: corroded or discon-  
nected water heater vent  
pipe, leaking chimney pipe  
or flue, or cracked heat  
exchanger, blocked or  
This unit has been designed to be as maintenance-free as possible, but there  
are a few simple things you must do to keep it working properly:  
Test it at least once a week.  
clogged chimney opening.  
Clean the Alarm at least once a month; gently vacuum the outside of the  
Alarm using your household vacuum’s soft brush attachment. Test the  
Alarm. Never use water, cleaners or solvents since they may damage the  
unit.  
Improper use of appliance/  
device: operating a barbecue  
grill or vehicle in an enclosed  
area (like a garage or  
Relocate the unit if it sounds frequent unwanted alarms. See Where This  
Alarm Should Not Be Installed” for details.  
screened porch).  
Transient CO Problems: transient” or on-again-off-again CO problems can  
be caused by outdoor conditions and other special circumstances.  
When the battery back-up becomes weak, the Alarm will “chirp” about  
once a minute (the low battery warning). You should replace the battery  
immediately to continue your protection. This Alarm must have AC or  
battery power to operate. If AC power fails, and the battery is dead  
or missing, the Alarm cannot operate.  
The following conditions can result in transient CO situations:  
1. Excessive spillage or reverse venting of fuel appliances caused by outdoor  
conditions such as:  
Wind direction and/or velocity, including high, gusty winds. Heavy air in  
the vent pipes (cold/humid air with extended periods between cycles).  
DO NOT spray cleaning chemicals or insect sprays directly on or near the  
Alarm. DO NOT paint over the Alarm. Doing so may permanently damage the  
Alarm.  
Negative pressure differential resulting from the use of exhaust fans.  
Several appliances running at the same time competing for limited fresh  
air.  
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.  
CHOOSING A REPLACEMENT BATTERY:  
Your Alarm requires one standard 9V alkaline battery. The following batteries  
are acceptable as replacements: Duracell #MN1604, (Ultra) #MX1604;  
Eveready (Energizer) #522. You may also use a Lithium battery like the Ultralife  
U9VL-J for longer service life between battery changes. These batteries are  
available at many local retail stores.  
2. Extended operation of unvented fuel burning devices (range, oven, fireplace).  
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.  
Actual battery service life depends on the Alarm and the environment in which  
it is installed. All the batteries specified above are acceptable replacement  
batteries for this unit. Regardless of the manufacturer’s suggested battery life,  
you MUST replace the battery immediately once the unit starts “chirping” (the  
“low battery warning).  
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.  
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.  
These fuels include: Wood, coal, charcoal, oil, natural gas, gasoline, kerosene,  
and propane.  
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.  
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HOW CAN I PROTECT MY FAMILY FROM CO  
POISONING?  
REGULATORY INFORMATION FOR EXPLOSIVE GAS  
ALARMS  
A Gas/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.  
A Gas/CO Alarm is not a substitute for proper maintenance of home  
appliances.  
Standards: Underwriters Laboratories Inc. UL1484.  
According to Underwriters Laboratories Inc. UL1484, this unit meets the alarm  
response time for gas as follows: This unit shall alarm before 25% of the LEL  
of either natural gas or propane is detected. In all cases, the unit will detect  
gas as a priority over carbon monoxide. If the device is detecting CO, then  
detects an amount of gas to cause an alarm, the device will stop alarming for  
CO and begin to alarm for gas.  
To help prevent CO problems and reduce the risk of CO poisoning:  
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.  
GENERAL LIMITATIONS OF EXPLOSIVE GAS/CO  
ALARMS  
This Gas/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 Alarms must be met. This device is  
not intended to alert hearing impaired residents.  
Test and maintain all fuel-burning equipment annually. Many local gas or  
oil companies and HVAC companies offer appliance inspections for a  
nominal fee.  
Make regular visual inspections of all fuel-burning appliances. Check  
appliances 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.  
Gas/CO Alarms may not waken all individuals. If children or others do  
not readily waken to the sound of the Gas/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.  
This Gas/CO Alarm will not sense gas or CO that does not reach the  
sensors. It will only sense gas or CO at the sensor. Gas or CO may be present  
in other areas. Doors or other obstructions may affect the rate at which CO or  
gas reaches the sensors.  
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.  
Check the house or garage on the other side of shared wall.  
Gas/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  
Gas/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 Gas/CO Alarm is not intended for people who are hearing  
impaired.  
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.  
In addition, familiarize yourself with all enclosed materials. Read this  
manual in its entirety, and make sure you understand what to do if your  
Gas/CO Alarm sounds.  
REGULATORY INFORMATION FOR EXPLOSIVE  
GAS/CO ALARMS  
REGULATORY INFORMATION FOR CO ALARMS  
WHAT LEVELS OF CO CAUSE AN ALARM?  
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).  
This Gas/CO Alarm is not a substitute for life insurance. Though this  
Gas/CO Alarm warns against increasing CO levels or the presence of gas,  
BRK Brands, Inc. does not warrant or imply in any way that they will protect  
lives. Homeowners and renters must still insure their lives.  
This Gas/CO Alarm is not foolproof. Like all other electronic devices, this  
Gas/CO Alarm has limitations. It can only detect gas or CO that reaches the  
sensors. It may not give early warning of the source of gas or CO is in a  
remote part of the home, away from the alarm device.  
This Gas/CO Alarm has a limited life. Although this Gas/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  
this device weekly. The unit should be replaced immediately if it is not operating  
properly.  
UL2034 Required Alarm Points*:  
If the alarm is exposed to 400 ppm of CO, IT MUST ALARM BETWEEN  
4 and 15 MINUTES.  
If the alarm is exposed to 150 ppm of CO, IT MUST ALARM BETWEEN  
10 and 50 MINUTES.  
If the alarm is exposed to 70 ppm if CO, IT MUST ALARM BETWEEN  
60 and 240 MINUTES.  
* Approximately 10% COHb exposure at levels of 15% to 95% Relative  
Humidity (RH).  
The unit is designed not to alarm when exposed to a constant level of 30 ppm  
for 30 days.  
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.  
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.  
An exposure to 400 ppm of CO may cause headaches in average, healthy  
adults after 35 minutes, but can cause death after 2 hours.  
Standards: Underwriters Laboratories Inc. Single and Multiple Station carbon  
monoxide alarms UL2034.  
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.  
Gas Detection at Typical Temperature and Humidity Ranges: The CO  
Alarm is not formulated to detect CO levels below 30 ppm typically.  
Audible Alarm: 85dB minimum at 10 feet (3 meters).  
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TROUBLESHOOTING GUIDE  
If your Alarm does this...  
It means...  
You should...  
Green light is OFF. Unit will not alarm when you press  
the Test/Silence button.  
Unit may not be receiving any power.  
Check the AC power supply. Make sure a fresh 9V  
battery is installed to power the battery back-up*.  
Green light flashes ON, once a minute (horn is silent).  
Alarm is not receiving AC power. Unit is operating on  
battery back-up.  
Check the AC power supply.  
The horn “chirps” once a minute.  
Low battery warning. Battery is low or missing.  
Replace the battery. Avoid interrupting AC power.  
Once a minute, the alarm sounds 3 quick “chirps,  
and the green light flashes quickly three times.  
Unit malfunction. Unit needs to be replaced. Based  
on self-diagnostic tests, the unit has detected a fault  
or the Alarm has reached its end-of-life, 5 years.  
Units under warranty should be returned to  
manufacturer for replacement. See “Limited  
Warranty” for details.  
The horn sounds constantly with no pattern and  
cannot be silenced.  
Unit malfunction. Unit needs to be replaced.  
Units under warranty should be returned to  
manufacturer for replacement. See “Limited  
Warranty” for details.  
Alarm goes back into alarm after you pressed the  
Test/Silence button to silence an alarm.  
Gas and/or CO levels are still potentially dangerous.  
Refer to “If Your Gas/CO Alarm Sounds” for details  
on how to respond to an alarm. If anyone is feeling ill,  
EVACUATE your home immediately and call 911.  
Alarm sounds frequently even though no high levels  
of gas or CO are revealed in an investigation.  
The Alarm may be improperly located. Refer to  
Where to Install This Alarm.”  
Relocate your alarm. If frequent alarms continue, have  
home rechecked for potential problems. You may be  
experiencing an intermittent gas or CO problem.  
*For a list of acceptable replacement batteries, see “Regular Maintenance.”  
If you have any questions that cannot be answered by reading this manual, call Consumer Affairs: 1-800-323-9005.  
LIMITED WARRANTY  
BRK Brands, Inc., ("BRK") the maker of BRK Electronics® brand products warrants that for a period of five 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.  
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.  
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 or any batteries that are included with this unit.  
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.  
How to Obtain Warranty Service  
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 - 5:00 PM Central Standard Time, Monday through Friday. To assist us in serving you, please have the model number and date of purchase available when  
calling. 303 Nelson Avenue, Neosho, MO 64850-8806.  
Battery: BRK Brands, Inc. make no warranty, express or implied, written or oral, including that of merchantability or fitness for any particular purpose with respect  
to battery.  
For your records, please record:  
Date Purchased: _______________________________  
Where Purchased: ____________________________________________  
Date Installed: ____________/____________Month/Year  
Replacement date is five years after installation:__________/__________  
Month/Year  
NOTE: End of Life Signal — Once the unit reaches the end of its  
lifecycle, the malfunction signal will sound once a minute to indicate  
the need to immediately replace the Alarm.  
BRK Electronics® is a registered trademark of BRK Brands, Inc.  
Printed in Mexico M08-0123-000  
Q
05/05  
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