BRK electronic Smoke Alarm C05120BN User Manual

HOW YOUR CO ALARM WORKS, Continued  
DISPLAY CONDITIONS (CO5120PDBN)  
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.  
SYMPTOMS OF CO POISONING  
IF YOUR CO ALARM SOUNDS  
INSTALLATION, continued  
These symptoms are related to CO POISONING and should be discussed with  
ALL household members.  
USER’S MANUAL  
AC POWERED  
CARBON MONOXIDE ALARM  
BEFORE YOU BEGIN INSTALLATION  
STAND ALONE ALARM ONLY:  
If you are only installing one unit, restore power to the junction box.  
INTERCONNECTED ALARMS ONLY:  
Actuation of your CO Alarm indicates the presence of carbon monoxide (CO)  
which can kill you. When your CO Alarm sounds, you must not ignore it!  
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.  
This unit is designed to be mounted on any standard wiring junction box up  
to a 4-inch (10 cm) size, on either the ceiling or wall. Read “Where to Install CO  
Alarms” and “Where Not To Install CO Alarms” before you begin installation.  
If a junction box is not already in place, install one using standard #12 or #14  
gauge copper wire.  
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 ALARM SOUNDS:  
1. Operate the Test/Silence button to silence the alarm.  
120VAC ~, 60Hz, 0.09A  
If you are interconnecting multiple Alarms, repeat Step 1-5 for  
each Alarm in the series. When you are finished, restore power  
to the junction box.  
• 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.  
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 use grills or barbecue indoors, or in garages or on  
screen porches.  
2. Call your emergency services, fire department or 911. Write down the  
number of your local emergency service here:  
Alarm operating  
on AC power  
Alarm operating  
on emergency  
battery back-up  
Low / missing  
battery warning  
“Err” Alarm is  
not operating  
properly  
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.  
________________________________________________________________  
• This Alarm must have AC or battery power to operate. If the AC  
power fails, the battery back-up will power the Alarm for a short  
time if the 9V battery is fresh and correctly installed. If AC power  
fails, and the battery is dead or missing, the Alarm cannot operate.  
ELECTRICAL SHOCK HAZARD. Do not restore power until all Alarms are  
completely installed. Restoring power before installation is complete may  
result in serious electrical shock, injury or death.  
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.  
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:  
What you see and hear if CO is detected:  
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!  
• Make sure the alarm is not receiving excessive noisy power.  
Examples of noisy power could be major appliances on the same  
circuit, power from a generator or solar power, light dimmer on the  
same circuit or mounted near fluorescent lighting. Excessive noisy  
power may cause damage to your Alarm.  
PRE-ALARM LEVELS :  
IF YOU SILENCE THE ALARM:  
6. Make sure the CO Alarm is receiving AC power. Under normal operation,  
the red indicator light will shine continuously. If the red power indicator light  
does not light, TURN OFF POWER TO THE JUNCTION BOX and recheck  
all connections. If all connections are correct and the red power indicator  
still does not light when you restore the power, the unit should be replaced  
immediately.  
HORN: Silent  
HORN: Silent for about  
4 minutes*  
DISPLAY: Shows CO levels  
detected in ppm (CO5120PDBN)  
DISPLAY: Shows CO levels  
detected in ppm (CO5120PDBN)  
Find the pair of self-adhesive labels included with this CO Alarm.  
• On each label write in the phone number of your emergency responder  
(like 911) and a qualified appliance technician.  
WITH BATTERY BACK-UP  
WITH BATTERY BACK-UP  
AND DIGITAL DISPLAY  
POWER/ALARM LIGHT:  
On continuously  
Model CO5120BN  
7. ACTIVATING THE BATTERY BACK-UP  
POWER/ALARM LIGHT:  
Flashes rapidly  
Model CO5120PDBN  
• Place one label near the CO Alarm, and the other label in the “fresh air”  
location you plan to go if the alarm sounds.  
• 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.  
ALARM LEVELS OF CO ARE  
DETECTED:  
*Note: After 4 minutes, if CO  
levels drop below alarm levels,  
the unit will remain silent and  
return to normal operation. If CO  
present still indicates a potentially  
dangerous situation, the horn will  
sound again.  
Activate the battery back-up by removing the “Pull to Activate Battery  
Back-Up” tab. You do not need to open the battery compartment and  
reposition the battery during installation. DO NOT remove the battery  
activation tab until AC power is turned on to conserve battery power.  
IMPORTANT! PLEASE READ CAREFULLY AND SAVE.  
NOTE: A qualified appliance technician is defined as “a person, firm, corporation,  
or company that either in person or through a representative, is engaged in and  
responsible for the installation, testing, servicing, or replacement of heating,  
ventilation, air conditioning (HVAC) equipment, combustion appliances and  
equipment, and/or gas fireplaces or other decorative combustion equipment.”  
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:  
HORN: Sounds loudly - 4 beeps,  
pause, 4 beeps, pause.  
This sequence repeats for as  
long as the unit is in alarm*  
This users manual contains important information  
about your CO Alarms 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.  
_________________________________________________________________  
• Check the house or garage on the other side of shared wall.  
• 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.  
8. Test the CO Alarm. Press and hold the test button on the cover until the  
alarm sounds: 4 beeps, pause, 4 beeps, pause. In a series of interconnected  
Alarms, you must test each Alarm separately by pressing and holding the  
test button. Make sure all units alarm when each one is tested.  
Alarms have various limitations. See "General Limitations of CO Alarms"  
for details.  
• House well ventilated before the investigator arrives.  
• Problem caused by “backdrafting.”  
Transient CO problem caused by special circumstances.  
Models  
CO5120BN,  
CO5120PDBN  
DISPLAY: Shows CO levels  
detected in ppm (CO5120PDBN)  
PARTS OF THIS CO ALARM  
M08-0002-002  
Q
04/07 Printed in Mexico  
1
3
IF THE CO LEVELS RETURN  
TO NORMAL:  
1
2
3
Mounting Bracket  
POWER/ALARM LIGHT:  
Flashes rapidly  
USING THE SILENCE FEATURE  
UNDERWRITERS LABORATORIES INC. UL2034  
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).  
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 any unit in the series does not alarm during testing, TURN OFF POWER  
and recheck connections. If it does not alarm when you restore power,  
replace it immediately.  
Mounting Slot and Screw*  
HORN: Silent  
*Note: If unit goes into alarm  
under battery back-up power,  
the regular 4 beeps-brief pause  
cycle will repeat for four minutes.  
After four minutes, the pause will  
increase to 1 minute.  
2
INTRODUCTION  
Locking Pins (break out of  
bracket)  
DISPLAY: Dash lit by “READY”  
NEVER disconnect the power to your CO Alarm to silence the horn—  
use the silence feature. Disconnecting the CO Alarm removes your  
protection! See previous page for details on responding to an alarm.  
(CO5120PDBN)  
Thank you for choosing BRK Brands, Inc. for your Carbon Monoxide Alarm  
needs. You have purchased a state-of-the-art Carbon Monoxide Alarm  
designed to provide you with early warning of carbon monoxide.  
Key features include:  
2
4
5
6
7
Hot (Black) AC Wire  
POTENTIAL SOURCES OF CO IN THE HOME  
POWER/ALARM LIGHT:  
Shines continuously  
SPECIAL REQUIREMENTS FOR INTERCONNECTED CO ALARMS  
6
The Silence Feature is intended to temporarily silence your CO Alarms 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. When CO reaches  
alarm level, the unit 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  
Silence cycle will last approximately 4 minutes.  
Fuel-burning appliances like:  
portable heater, gas or wood  
burning fireplace, gas kitchen range  
or cooktop, gas clothes dryer.  
Neutral (White) AC Wire  
Interconnect Wire (Orange)  
3
UL2034 Required Alarm Points*:  
4
5
• 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 of CO, IT MUST ALARM BETWEEN  
60 and 240 MINUTES.  
Intelligent Sensing Technology is designed to help reduce unwanted or  
Failure to meet any of the above requirements could damage the  
units and cause them to malfunction, removing your protection.  
AC and AC/DC CO Alarms can be interconnected. Under AC power,  
all units will alarm when one senses CO. When power is interrupted,  
only the AC/DC units in the series will continue to send and receive  
signals. AC powered CO Alarms will not operate.  
7
nuisance alarms.  
Lever to Open Battery  
Compartment  
SMART INTERCONNECT FEATURE  
Single Button Test/Silence eliminates confusion. Depending on what mode  
the alarm is in, pushing the button provides different functions such as testing  
the alarm, silencing the alarm or low-battery signal, re-testing the alarm when  
in silence and clearing the Latching feature.  
8
Damaged or insufficient  
This CO Alarm includes “Smart Interconnect” which enables the Alarm to be  
interconnected with other BRK Smoke and CO Alarms. When interconnected  
to Smoke Alarms that go into alarm, this CO Alarm will sound the smoke horn  
pattern.  
venting: corroded or disconnected  
water heater vent pipe, leaking  
chimney pipe or flue, or cracked  
heat exchanger, blocked or  
clogged chimney opening.  
8
9
Swing-Out Battery  
Compartment  
To silence an interconnected series of Alarms, you must press the Test/  
Silence button on the initiating alarm (the unit with the flashing red light).  
If you press the Test/Silence on any other Alarm, it will only silence that unit,  
not the whole interconnected series.  
NOTE: After the 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.  
9
Quick-Connect Power  
* 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.  
Latching Alarm Indicator easily identifies initiating alarm even after the alarm  
Interconnected units can provide earlier warning of a CO problem than stand-  
alone units, especially if the problem starts in a remote area of the dwelling. If  
any unit in the series senses CO, all units will alarm. To determine which CO  
Alarm initiated an alarm, refer to the table.  
condition has subsided.  
*Not Included  
USING THE PEAK CO MEMORY (CO5120PDBN)  
The CO Memory Feature lets you check the highest level of CO recorded  
during an alarm.  
Smart Interconnect interconnects with most First Alert® and BRK branded  
smoke, CO and heat alarms. When interconnected with alarming smoke  
alarms, unit will sound smoke horn pattern.  
Improper use of appliance/  
device: operating a barbecue grill  
or vehicle in an enclosed area (like  
a garage or screened porch).  
HOW TO INSTALL YOUR CO ALARM  
Tools you will need: Standard Flathead screwdriver.  
On Initiating CO Alarm  
On All Other CO Alarms  
Red LED Flashes Once per Second  
While the CO Alarm is silenced:  
To check CO Memory:  
1. Press and release the Test/Silence/Scroll button until the dash scrolls  
to “MEMORY.  
Dust Cover is included to keep the alarm clean during construction.  
CO Alarms are designed to alarm before there is an immediate life threat.  
Since you cannot see or smell CO, never assume its 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.  
Red LED Does Not Flash Once per Second  
Transient CO Problems: “transient” or on-again-off-again CO problems can  
be caused by outdoor conditions and other special circumstances.  
Easy Installation/Maintenance features include a large opening in the  
mounting bracket for easy access to wiring. A battery pull tab keeps the  
battery fresh until the home is occupied. A Side Load Battery Drawer allows for  
easy battery replacement without removing the alarm from the ceiling or wall.  
If the CO Alarm...is silent for only 4 minutes, then starts sounding loudly—4  
beeps, then a pause, 4 beeps, then a pause. Red light (LED) continues flashing...  
This means...CO levels are still potentially dangerous.  
The following conditions can result in transient CO situations:  
ELECTRICAL SHOCK HAZARD. Turn off power to the area where you  
will install this unit at the circuit breaker or fuse box before beginning  
installation. Failure to turn off the power before installation may result  
in serious electrical shock, injury or death.  
2. Press and hold Test/Silence/Scroll button to display Memory CO level.  
Interconnect units within a single family residence only. Otherwise all house-  
holds will experience unwanted alarms when you test any unit in the series.  
Interconnected units will only work if they are wired to compatible units and  
all requirements are met. This unit is designed to be compatible with: BRK  
1. Excessive spillage or reverse venting of fuel appliances caused by outdoor  
conditions such as:  
To clear CO Memory:  
1. Press and release the Test/Silence/Scroll button until the dash scrolls to  
“CLEAR MEMORY.”  
If the CO Alarm...remains silent....  
This means...unit has returned to normal operation.  
© 2007 BRK Brands, Inc., a subsidiary of Jarden Corporation.  
3901 Liberty Street Road, Aurora, IL 60504-8122  
All rights reserved.  
• Wind direction and/or velocity, including high, gusty winds. Heavy air in  
the vent pipes (cold/humid air with extended periods between cycles).  
Standards: Underwriters Laboratories Inc. Single and Multiple Station carbon  
monoxide alarms UL2034.  
®
Electronics Smoke Alarm Models SC6120B, 4120, 4120B, 4120SB, 4919,  
To install this unit:  
®
2002RAC, 100S, 5919, 5919TH; BRK Electronics Heat Alarm Models HD6135F,  
2. Press and hold the Test/Silence/Scroll button until the display shows “CLr.”  
Consumer Affairs: (800) 323-9005  
®
1. Remove the mounting bracket from the base. Position the screw  
slots on the mounting bracket over the screws in the junction box.  
Tighten the screws.  
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. 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.  
• Negative pressure differential resulting from the use of exhaust fans.  
• Several appliances running at the same time competing for limited fresh air.  
HD6135FB; BRK Electronics CO Alarm Models SC6120B, CO5120BN,  
www.brkelectronics.com • www.firstalert.com  
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.  
®
SILENCING THE LOW BATTERY WARNING  
CO5120PDBN; and First Alert Smoke Alarm Models SA4120B, SA4121B,  
SA4919B, SA100B.  
This silence feature can temporarily quiet the low battery warning “chirp” for  
up to 8 hours if AC power is present. Press the Test/Silence button on the  
alarm cover. Once the low battery warning “chirp” silence feature is activated,  
the unit continues to flash the red light once a minute for 8 hours. After 8  
hours, the low battery “chirp” will resume. Replace the battery as soon as  
possible, to maintain protection in the event of a power outage.  
• Vent pipe connections vibrating loose from clothes dryers, furnaces, or  
water heaters.  
2. Using wire nuts, connect the power connector to the AC power.  
BASIC SAFETY INFORMATION  
Interconnected units must meet ALL of the following requirements:  
• A maximum of 18 compatible BRK Electronics® Smoke, Heat or CO  
Alarms may be interconnected. No more than 12 of the 18 can be Smoke  
Alarms per NFPA 72.  
• Obstructions in or unconventional vent pipe designs which can amplify  
the above situations.  
Improper wiring of the power connector or the wiring leading to the  
power connector will cause damage to the Alarm and may lead to a  
non-functioning Alarm.  
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.  
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.  
INSTALLATION  
WHERE TO INSTALL 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.  
• The same fuse or circuit breaker must power all interconnected units.  
• The total length of wire interconnecting the units should be less than  
1000 feet. The interconnect wire should be Type 18 gauge AWM or larger,  
rated at least 300V. If an interconnect wire is not already part of your  
household wiring, you will need to install one. This type of wire is  
commonly available at Hardware and Electrical Supply stores.  
• All wiring must conform to all local electrical codes and Article 760 of  
the National Electrical Code. Refer to NFPA, Chapter 2 and/or your local  
building code for further connection requirements.  
THE “LATCHING ALARM” INDICATOR:  
STAND ALONE ALARM ONLY:  
Connect the white wire on the power connector to the neutral wire  
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.  
in the junction box.  
This CO Alarm is approved for use in single-family residences. It is  
NOT designed for marine or RV use.  
Connect the black wire on the power connector to the hot wire in  
the junction box.  
Tuck the orange wire inside the junction box. It is used for  
KEY:  
LATCHING ALARM:  
Unit was exposed  
to alarm levels of CO  
If your bedroom hallway is longer than 40 feet (12 meters), install a CO Alarm  
at BOTH ends of the hallway.  
Audible Alarm: 85 dB minimum at 10 feet (3 meters).  
interconnect only.  
BEDROOM  
BEDROOM  
KITCHEN  
BEDROOM  
GARAGE  
This CO Alarm will only indicate the presence of carbon monoxide  
gas at the sensor. Carbon monoxide gas may be present in other  
areas.  
INTERCONNECTED ALARMS ONLY:  
6
LATCHING NOT ACTIVATED:  
Unit was not exposed  
to alarm levels of CO  
Strip off about 1/2” of the plastic coating on the orange interconnect  
7
B
A
}
GENERAL LIMITATIONS OF CO ALARMS  
}
8
wire on the power connector.  
HALL  
LIVING ROOM  
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 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.  
CO Alarms will not work without power. This CO Alarm requires a continuous  
supply of AC power, and a fresh, correctly installed 9V battery to power the  
battery back-up. The battery back-up is for emergency use only!  
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 CO 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.  
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.  
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.  
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.  
Connect the white wire on the power connector to the neutral wire  
(usually white) in the junction box.  
Connect the black wire on the power connector to the hot wire (usually  
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) battery 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.  
BASEMENT  
5
4
3
5
4
3
2
BEDROOM  
BEDROOM  
KITCHEN  
BEDROOM  
black) in the junction box.  
Connect the orange wire on the power connector to the interconnect  
wire in the junction box. Repeat for each unit you are interconnecting.  
Never connect the hot or neutral wires in the junction box to the  
orange interconnect wire.  
The Latching Alarm Indicator is activated after a CO Alarm is exposed to  
alarm levels of carbon monoxide. After CO levels drop below alarm levels, the  
red LED will begin to flash once every 5 seconds. It will continue to flash or  
“latch” until you clear it by testing the alarm.  
This feature helps emergency responders, investigators, or service technicians  
identify which unit(s) in your home were exposed to alarm levels of carbon  
monoxide. This can help investigators pinpoint the source of CO.  
1
1
GARAGE  
HALL  
LIVING ROOM  
A. Unswitched 120VAC  
60 Hz source  
B. To Additional Alarms,  
Maximum = 18 Alarms  
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.  
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.  
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.  
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.  
3. Plug the power connector into the back of the CO Alarm.  
BASEMENT  
4. Position the base of the Alarm over the mounting bracket and turn. The  
Alarm can be positioned over the bracket every 60°. Turn the unit clockwise  
(right) until the unit is in place.  
1. CO Alarm  
4. Wire Nut  
7. Interconnect Wire  
(Orange)  
2. Ceiling or Wall  
3. Power Connector  
5. Junction Box  
REQUIRED TO MEET NFPA RECOMMENDATIONS  
SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS  
Interconnected Alarms. Latching Alarm Indicator shows which Alarm(s) in the  
series were exposed to alarm levels of carbon monoxide.  
The Latching Alarm Indicator stays ON until you clear it, so it can alert you to  
a CO Alarm that occurred while you were away from home, even though CO  
present in the air has dropped below alarm levels.  
8. Hot Wire (Black)  
6. Neutral Wire (White)  
5. Check all connections.  
In a Single-level Home:  
• Install at least one CO Alarm near or within each separate sleeping area.  
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.  
For added protection, install an additional CO Alarm at least 20 feet  
(6 meters), away from the furnace or fuel burning heat source.  
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.  
USING THE OPTIONAL LOCKING FEATURES  
The optional locking features are designed to prevent unauthorized removal of  
the battery or alarm. It is not necessary to activate the locks in single-family  
households where unauthorized battery or alarm removal is not a concern.  
These CO Alarms have two separate locking features: one locks the battery  
compartment, and the other locks the CO Alarm to the mounting bracket.  
You can choose to use either feature independently, or use them both.  
WEEKLY TESTING  
In a Multi-level Home (same as above plus):  
Push and hold the Test/Silence button until you hear an acknowledge chirp and  
a loud alarm sounds — 4 beeps, pause, 4 beeps. This sequence should last for  
10 seconds. If the Alarm ever fails to test properly, replace it immediately. If the  
Alarm is not working properly, refer to “Limited Warranty.  
• 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. If you have a basement, install that CO Alarm at the top of the  
basement stairs.  
• For added protection, install an additional CO Alarm at least 20 feet  
(6 meters) away from the furnace or fuel burning heat source.  
Locking Pin  
If the Alarm ever fails to test properly, replace it immediately.  
Products under warranty may be returned to the manufacturer for  
replacement. See “Limited Warranty” at the end of this manual.  
Tools you will need: • Needle-nose pliers • Standard Flathead screwdriver.  
TROUBLESHOOTING GUIDE  
HOW YOUR CO ALARM WORKS  
The Cover Of Your CO Alarm  
Both locking features use locking pins, molded into the mounting bracket. Using  
needle nose pliers remove one or both pins, depending on which locking features  
you use.  
WHERE CO ALARMS SHOULD NOT BE INSTALLED  
DO NOT locate this CO Alarm:  
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.  
The following guide can help you identify a potential problem with the  
installation or operation of your CO Alarm. NOTE: It is not meant to be  
an all-inclusive list of all CO Alarm conditions. If you are experiencing a  
condition not covered in the next several pages, please contact Consumer  
Affairs.  
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where  
the CO Alarm is installed BEFORE removing it from the mounting  
bracket or checking any electrical connections! Failure to turn off the  
power first may result in serious electrical shock, injury or death.  
5
1. Test/Silence Button  
Scroll Button (CO5120PDBN)  
In garages, kitchens, furnace rooms, or in any extremely dusty, dirty  
or greasy areas.  
2
NEVER use vehicle exhaust! Exhaust may cause permanent damage  
and voids your warranty.  
THE MOUNTING BRACKET LOCK  
Tools you will need:  
THE BATTERY COMPARTMENT LOCK  
TO LOCK THE BATTERY COMPARTMENT:  
2. POWER/ALARM Light (RED)  
3. Air Vents  
Where combustion particles are produced. Combustion particles form  
when something burns. Areas to avoid include poorly ventilated kitchens,  
garages, and furnace rooms. Keep units at least 20 feet (6 meters) from  
the sources of combustion particles (stove, furnace, water heater, space  
heater) if possible. In areas where a 20-foot (6 meter) distance is not  
possible — in modular, mobile, or smaller homes, for example — it is  
recommended the CO Alarm be placed as far from these fuel-burning  
sources as possible. The placement recommendations are intended to  
keep these Alarms at a reasonable distance from a fuel-burning source,  
and thus reduce “unwanted” alarms. Unwanted alarms can occur if a CO  
Alarm is placed directly next to a fuel-burning source. Ventilate these areas  
as much as possible.  
3
4
Problem...  
If the Alarm..  
You should...  
• Needle-nose pliers  
• Standard Flathead screwdriver  
1
REGULAR MAINTENANCE  
To keep the CO Alarm working properly:  
Do not lock the battery compartment until you have  
activated the battery and tested the battery back-up.  
Red 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 the power  
connector is securely attached to the Alarm. Make  
sure a fresh 9V battery is installed to power the  
battery back-up.  
4. (Behind the Cover) Alarm Horn:  
85 dB audible alarm for test,  
alarm, and unit malfunction  
warning.  
TO ACTIVATE THE BRACKET LOCK:  
1. Using needle-nose pliers, detach one locking pin  
from the mounting bracket.  
2. Insert the locking pin into the  
lock located on the pivoting  
hinge of the battery door.  
3. When you attach the CO Alarm  
to the mounting bracket, the  
locking pin’s head will fit into a  
notch on the bracket.  
Test it every week as described in “Weekly Testing.”  
1. Activate the battery back-up by removing the “Pull to  
Activate Battery Back-Up” tab. Push and hold the test  
button on the CO Alarm’s cover until you hear an  
acknowledge chirp and the alarm sounds: 4 beeps,  
pause, 4 beeps, pause.  
Vacuum the CO Alarm cover at least once a month, using the soft brush  
attachment. Never use water, cleaners, or solvents, since they may damage  
the unit. Test the Alarm again after vacuuming.  
Red light flashes once a minute (horn is silent).  
(CO5120PDBN display reads “bat”).  
Alarm is not receiving AC power.  
Low battery warning.  
Unit is operating on DC battery back-up. Check the  
AC power supply.  
5. Digital Display (CO5120PDBN)  
Replace the battery immediately when you see/hear the  
“Low Battery Warning.  
Once a minute, the red light flashes and the horn  
“chirps. (CO5120PDBN display flashes “bat”).  
Replace the 9V battery in the battery back-up.  
Disconnect AC power before changing the battery.  
If the unit does not alarm during testing, DO NOT  
lock the battery compartment! Install a new battery  
and test again. If it still does not alarm, replace the  
CO Alarm immediately.  
Within 5 feet (1.5 meter) of any cooking appliance.  
The Low (or Missing) Battery Warning (CO5120PDBN):  
The horn will “chirp” once a minute and the word “bat” will flash on and off on  
the display.  
In extremely humid areas. This Alarm should be at least 10 feet (3 meter)  
from a bath or shower, sauna, humidifier, vaporizer, dishwasher, laundry  
room, utility room or other source of high humidity.  
UNDERSTANDING THE LIGHT AND HORN PATTERNS  
(CO5120BN)  
Once a minute, the alarm sounds 3 quick “chirps,  
and the red light flashes quickly three times.  
(CO5120PDBN display reads “Err”).  
MALFUNCTION SIGNAL. Based on its Self Test  
diagnostics, the unit has detected a malfunction.  
The unit needs to be replaced.  
Make sure a fresh 9V battery is installed. If unit still  
isn’t functioning– REPLACE IT. Units under warranty  
should be returned to manufacturer for  
2. Using needle-nose pliers, detach one  
locking pin from the mounting bracket.  
Condition  
LED (Red Light)  
Horn  
In areas where temperature is colder than 40˚ F (4˚ C) or hotter than 100˚ F  
(38˚ C). These areas include non-airconditioned crawl spaces, unfinished  
attics, uninsulated or poorly insulated ceilings, porches, and garages.  
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.  
replacement. See “Limited Warranty” for details.  
TO DEACTIVATE THE BRACKET LOCK:  
REPLACING THE BATTERY  
POWER UP  
LED flashes on once,  
then shines continuously  
Horn “chirps”  
once.  
3. Push the locking pin through the black  
dot on the label on the back of the CO  
Alarm.  
Choosing a replacement battery: This unit requires one standard 9V alkaline  
battery. The following alkaline batteries are acceptable as replacements:  
Duracell #MN1604 or MX1604; Eveready “Energizer” 522. You can also use an  
Ultralife 9 volt lithium battery #U9VL for longer service life between battery  
changes. These replacement batteries are commonly available at local retail  
stores.  
CO Alarm goes back into alarm 4 minutes after  
you press the Test/Silence button.  
CO levels are still potentially dangerous.  
Refer to “If Your CO Alarm Sounds” for details on  
how to respond to an alarm. If anyone is feeling ill,  
EVACUATE your home immediately and call 911.  
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where the  
CO Alarm is installed before removing it from the mounting bracket.  
Failure to turn off the power first may result in serious electrical shock,  
injury or death.  
DURING TESTING  
LED flashes once every second  
during the test cycle  
Horn pattern:  
4 beeps, pause,  
4 beeps, pause  
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.  
TO UNLOCK THE  
BATTERY COMPARTMENT:  
In direct sunlight.  
LOW OR MISSING  
BATTERY  
LED flashes once a minute  
LED is OFF  
Horn “chirps”  
once a minute  
Always discharge the branch circuit before servicing an AC or AC/DC CO  
Alarm. First, turn off the AC power at the circuit breaker or fuse box.  
Next, remove the battery from Alarms with battery back-up. Finally, press  
and hold the test button.  
Use only the alkaline or lithium replacement batteries listed. The unit may not  
operate properly with other batteries. Never use rechargeable batteries since  
they may not provide a constant charge.  
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.  
Once the CO Alarm is installed, you must disconnect it from the AC power  
before unlocking the battery compartment.  
MISSING OR DEAD  
BATTERY (DC back-  
up disabled  
Horn is silent  
LIMITED WARRANTY  
BRK Brands, Inc., ("BRK") the maker of First Alert® 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.  
1. Insert a flathead screwdriver between the  
mounting bracket pin and the mounting bracket.  
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where the CO  
Alarm is installed before removing it from the mounting bracket. Failure to  
turn off the power first may result in serious electrical shock, injury or death.  
WARNING: When the AC power is Off, if the battery is dead or missing,  
the CO Alarm cannot work.  
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.  
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.  
2. Pry the CO Alarm away from the bracket by  
turning both the screwdriver and the CO Alarm  
counterclockwise (left) at the same time.  
ALARM CONDITION  
Single CO Alarm  
(not interconnected)  
LED flashes once every second  
Horn pattern:  
4 beeps, pause,  
4 beeps, pause,  
repeating  
DO NOT use this CO Alarm in warehouses, industrial or commercial  
buildings, special-purpose non-residential buildings, RVs, boats,  
or airplanes. This CO Alarm is specifically designed for residential  
use, and may not provide adequate protection in non-residential  
applications.  
Always discharge the branch circuit before servicing an AC or AC/DC CO  
Alarm. First, turn off the AC power at the circuit breaker or fuse box. Next,  
remove the battery from Alarms with battery back-up. Finally, press and  
hold the test button for 5-10 seconds to discharge the branch circuit.  
1. Remove the CO Alarm from the mounting bracket. If the unit is locked to  
the bracket, see the section “To Deactivate the Locking Feature.”  
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.  
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.  
ALARM CONDITION  
Interconnected  
LED flashes rapidly on the units  
that triggered the alarm. LEDs  
Horn pattern:  
If your home is being fumigated, unplug the unit temporarily and put it  
where it will not be exposed to chemicals or fumes. When fumigation is  
complete and all traces of fumes clear, plug the unit back in and retest it.  
4 beeps, pause,  
Series of CO Alarms  
on the other Alarms in the series repeating on all  
will not flash  
CO Alarms  
2. Disconnect the power connector by gently prying it away from the back of  
the CO Alarm.  
How to Obtain Warranty Service  
IN SILENCE MODE  
LED flashes once every second  
on initiating Alarm  
Horn stays quiet  
for 4 minutes  
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. For Warranty Service return to: BRK Brands, Inc., 25 Spur Drive, El Paso, TX 79906  
3. Insert a flathead screwdriver under the head of  
the locking pin, and gently pry it out of the battery  
compartment lock. (If you plan to relock the  
battery compartment, save the locking pin.)  
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.  
LATCHING” ALARM  
INDICATOR  
LED Flashes once every  
5 seconds  
Horn stays quiet  
TO PERMANENTLY REMOVE THE BRACKET LOCK:  
Battery: BRK Brands, Inc. make no warranty, express or implied, written or oral, including that of merchantability or fitness for any particular purpose  
Insert the flathead screwdriver  
between the locking pin and the  
lock, and pry the pin out of the lock.  
with respect to battery.  
4. To relock the battery compartment, close the bat-  
tery door and reinsert the locking pin in the lock.  
MALFUNCTION  
LED flashes 3 times  
synchronized with 3 rapid chirps  
Horn sounds  
3 rapid chirps  
(chirp-chirp-chirp)  
every minute  
5. Reconnect the power connector to the back of the CO Alarm, reattach the  
CO Alarm to the mounting bracket, and restore the power.  
These fuels include: Wood, coal, charcoal, oil, natural gas, gasoline, kerosene,  
and propane.  
For your records, please record:  
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.  
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.  
Date Purchased: _______________Where Purchased: __________________  
When replacing the battery, always test the CO Alarm before relocking the  
battery compartment.  
Date Installed: ____________/____________Month/Year  
First Alert® is a registered trademark of the First Alert Trust.  
Printed in Mexico M08-0002-002  
Q
04/07  
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