BRK electronic Smoke Alarm CO5120B User Manual

MODEL CO5120B—User’s Manual  
AC Pow ered Carbon Monoxide Alarm  
With Batter y Back-Up  
120VAC 60 Hz .085A Standby .087A Alarm  
Model CO5120B  
M06-1046-001 6/00  
 
CHAPTER 1: Introduction  
BASIC SAFETY INFORMATION  
WARNING!  
This unit does not work without power. If the  
AC power fails, the battery back-up will power  
the alarm for at least 8 hours provided the 9V  
battery is fresh and correctly installed.  
IMPORTANT!  
Dangers, Warnings, and Cautions alert you to  
important operating instructions or to potentially  
hazardous situations. Pay special attention to  
these items.  
WARNING!  
NEVER ignore your Carbon Monoxide Alarm  
if it alarms. Refer to What To Do If Your CO  
Alarm Sounds” for more information. Failure  
to do so can result in injury or death.  
IMPORTANT!  
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.  
WARNING!  
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.  
IMPORTANT!  
This CO alarm is approved for use in single-  
family residences. It is NOT designed for marine  
use.  
CAUTION!  
WARNING!  
This CO alarm will only indicate the  
presence of carbon monoxide gas at the  
sensor. Carbon monoxide gas may be  
present in other areas.  
This 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  
WARNING!  
or industrial standards. Individuals with  
medical conditions may consider using  
warning devices which provide audible and  
visual signals for carbon monoxide  
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.  
concentrations under 30 ppm.  
2
 
General Information  
HOW YOUR CO ALARM WORKS  
This CO alarm is designed to be hard-wired and  
mounted on any standard size wiring junction  
box, up to 4” diagonal size.  
The Cover Of Your CO Alarm  
When fully powered, this CO alarm samples the  
air and takes a new reading about every second.  
A microchip inside the unit stores each reading,  
and remembers the levels of CO it has been  
exposed to over time. The unit goes into alarm  
mode when it has been exposed to a “critical”  
level of CO (measured in parts per million or  
“ppm”) within a specified time (measured in  
minutes).  
1
General features: This alarm features a  
permanently installed sensor, a red indicator light  
(LED), and an 85 dB alarm horn.  
9V Battery Back-Up. If AC power is interrupted,  
the CO alarm will continue to operate, provided  
the 9V battery is fresh and correctly installed.  
2
3
4
1
2
3
4
Test/Silence Button  
RED Indicator Light (LED)  
Air Vents  
Silence Feature. The silence feature temporarily  
quiets the alarm.  
Malfunction Warning  
This unit performs self-diagnostic tests  
approximately every second. If the alarm  
malfunctions, it should be replaced immediately.  
(Behind the Cover) Alarm Horn: 85db  
audible alarm for test, alarm, and unit  
malfunction warning  
3
 
Basic Operation  
Normal Operation.  
Low Battery Warning,  
AC Power ON:  
Horn is silent.  
The horn chirps”  
once a minute.  
Red light (LED) is  
on continuously.  
Red light flashes once  
each time the horn  
“chirps”.  
During Testing  
Horn pattern repeats  
twice: 4 beeps, pause,  
4 beeps, pause.  
Low Battery Warning  
AC Power OFF:  
Red light (LED) flashes  
once per second during  
the 10-second test cycle.  
The horn chirps” once  
a minute.  
Red light flashes once  
each time the horn  
“chirps”.  
During An Alarm  
Continuous repeating  
horn pattern: 4 beeps,  
pause, 4 beeps, pause.  
For a detailed list of all light and horn pattern  
combinations, see pages 24-25.  
Red light (LED) flashes  
once per second while  
the unit is in alarm.  
In Silenced Mode  
The horn is silent for  
at least 4 minutes.  
Red light (LED) flashes  
rapidly, once every  
second on the initiating  
alarm only.  
4
 
Supply Voltage: 120VAC 60Hz .085A  
Standby .087A Alarm  
CO ALARM SPECIFICATIONS  
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  
During Alarm: Repeating alarm horn pattern:  
4 beeps, pause, 4 beeps, pause.  
Stand-alone unit: red light (LED) flashes  
rapidly, once per second.  
Interconnected series: red light (LED)  
flashes rapidly, once per second on the  
Initiating alarm. Red light (LED) on all other  
alarms will not flash.  
concentrations in parts per million.  
Warranty: 5-year limited warranty.  
Required Alarm Levels: Before 10% COHb  
exposure at levels of 30% to 70% Relative  
Humidity (RH):  
Standards: Underwriters Laboratories Inc.  
Single and Multiple Station carbon monoxide  
alarms UL2034.  
400 ppm CO between 4 and 15 minutes  
150 ppm CO between 10 and 50 minutes  
70 ppm CO between 60 and 240 minutes  
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, 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.  
When exposed to a constant level of 30 ppm of  
CO, this CO alarm was tested not to go into  
alarm for at least for 30 days.  
Audible Alarm: 85dB minimum at 10 feet.  
Power: Powered by 120VAC. The 9V battery  
back-up provides 8 hours of standby and sounds  
alarm for 12 hours with fresh battery. When AC  
power is on, red light (LED) shines continuously.  
Under battery power, red light flashes once a  
minute.  
Malfunction: Horn chirps and light blinks 3 times  
(in rapid succession) every minute.  
Dimensions: 5.4” diameter (approx.)  
5
 
CHAPTER 2: Installation  
In a Single-level Home:  
WHERE TO INSTALL  
CO ALARMS  
Install at least one CO alarm near or within  
each separate sleeping area.  
The Consumer Product Safety Commission  
(CPSC) recommends the use of at least one CO  
alarm per household, located near the sleeping  
area. For added protection, install additional CO  
alarms in each separate bedroom, and on every  
level of your home.  
For added protection, install an additional  
CO alarm at least 20 feet (6 meters) away  
from the furnace or fuel burning heat  
source.  
In a Multi-level Home:  
If your bedroom hallway is longer than 40 feet,  
install a CO alarm at BOTH ends of the hallway.  
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.  
BEDROOM  
BEDROOM  
KITCHEN  
BEDROOM  
GARAGE  
HALL  
WARNING!  
LIVING ROOM  
This alarm must have AC or battery power  
to operate. If the AC power fails, the battery  
back-up will power the alarm if the 9V battery  
is fresh and correctly installed. If AC power  
fails, and the battery is dead or missing, the  
alarm cannot operate.  
BASEMENT  
SUGGESTED AREAS FOR INSTALLING CO ALARMS  
6
 
WHERE NOT TO INSTALL  
CO ALARMS  
WARNING!  
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.  
DO NOT locate this CO alarm:  
In garages, kitchens, furnace rooms,  
or in any extremely dusty, dirty or  
greasy areas.  
Within 5 feet of any cooking appliance.  
The alarm should be between 5 and 20  
feet from any cooking appliance.  
Closer than 20 feet from a furnace or other  
fuel burning heat source, or fuel burning  
appliances like a water heater.  
In extremely humid areas. This alarm  
should be at least 10 feet from a bath  
or shower, sauna, humidifier, vaporizer,  
dishwasher, laundry room, utility room  
or other source of high humidity.  
In areas where temperature is colder than  
40˚F (4˚C) or hotter than 100˚F (38˚C).  
These areas include unconditioned crawl  
spaces, unfinished attics, uninsulated or  
poorly insulated ceilings, porches, and  
garages.  
WARNING!  
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.  
WARNING!  
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 specically  
designed for residential use, and may not  
provide adequate protection in non-  
residential applications.  
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.  
In direct sunlight.  
7
 
The Battery Compartment Lock  
USING THE OPTIONAL  
LOCKING FEATURES  
TO LOCK THE BATTERY COMPARTMENT:  
IMPORTANT!  
Do not lock the battery compartment until you  
have activated the battery and tested the battery  
back-up.  
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  
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  
mounting bracket. You can choose to use either  
feature independently, or use them both.  
alarm’s cover until the  
alarm sounds: 4 beeps,  
pause, 4 beeps, pause.  
Tools you will need: • Needle-nose pliers  
• Standard/Flathead screwdriver.  
Both locking features use locking pins, molded  
into the mounting bracket. Using needle nose  
pliers or a utility knife, remove one or both pins,  
depending on which locking features you use.  
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.  
Battery Drawer Lock  
Mounting Bracket Lock  
2. Using needle-  
nose pliers or a  
utility knife,  
detach one  
locking pin  
from the  
mounting  
bracket.  
Locking Pin  
8
 
3. Push the locking pin through the black dot on  
the label on the back of the CO alarm.  
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.”  
2. Disconnect the power connector by gently  
prying it away from the back of the CO alarm.  
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 re-  
lock the battery compartment, save the  
locking pin.)  
TO UNLOCK THE BATTERY COMPARTMENT:  
IMPORTANT!  
Once the CO alarm is installed, you must  
disconnect it from the AC power before  
unlocking the battery compartment.  
DANGER!  
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 rst may  
result in serious electrical shock, injury or  
death.  
4. To re-lock the battery compartment, close  
the battery door and reinsert the locking pin  
in the lock  
.
5. Reconnect the power connector to the back of  
the CO alarm, reattach the CO alarm to the  
mounting bracket, and restore the power.  
WARNING!  
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 CO  
alarms with battery back-up. Finally, press  
and hold the test button for 5-10 seconds to  
discharge the branch circuit.  
IMPORTANT!  
When replacing the battery, always test the CO  
alarm before re-locking the battery compartment.  
9
 
TO DEACTIVATE THE BRACKET LOCK:  
The Mounting Bracket Lock  
Tools you will need:  
DANGER!  
Needle-nose pliers  
Standard/Flathead screwdriver  
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 rst may  
result in serious electrical shock, injury or  
death.  
TO ACTIVATE THE BRACKET LOCK:  
1. Using needle-nose pliers, detach one locking  
pin from the mounting bracket.  
WARNING!  
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 CO  
alarms with battery back-up. Finally, press  
and hold the test button for 5-10 seconds to  
discharge the branch circuit.  
2. Insert the locking pin into the lock located on  
the pivoting hinge of the battery door.  
1. Insert a flathead screwdriver between the  
mounting bracket pin and the mounting  
bracket.  
3. When you attach the CO alarm to the  
mounting bracket, the locking pin’s head will  
fit into a notch on the bracket.  
10  
 
2. Pry the CO alarm away from the bracket by  
turning both the screwdriver and the CO  
alarm clockwise (right) at the same time.  
HOW TO INSTALL  
YOUR CO ALARM  
This unit is designed to be mounted on any  
standard wiring junction box up to a 4-inch  
diagonal size, on either the ceiling or wall. Read  
Where to Install” 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.  
WARNING!  
This alarm must have AC or battery power  
to operate. If the AC power fails, the battery  
back-up will power the alarm if the 9V battery  
is fresh and correctly installed. If AC power  
fails, and the battery is dead or missing, the  
alarm cannot operate.  
TO PERMANENTLY REMOVE THE BRACKET  
LOCK:  
Insert the flathead screwdriver between the  
locking pin and the lock, and pry the pin out of  
the lock.  
Before you begin installation  
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.  
Place one label near the CO alarm, and the  
other label in the “fresh air” location you  
plan to go if the alarm sounds.  
11  
 
The Parts Of This CO Alarm  
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.”  
1
3
2
2
6
3
4
5
7
Activating the battery back-up  
8
IMPORTANT!  
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.  
9
1
2
3
4
5
6
7
8
9
Mounting bracket  
Mounting slot and screw  
Optional locking pins (break out of bracket)  
Hot (black) AC wire  
Neutral (white) AC wire  
When you activate the battery, the red light  
will ash once, and the horn will chirponce.  
Test the battery back-up. Press and hold the  
test button on the cover until the alarm sounds:  
4 beeps, pause, 4 beeps, pause.  
Interconnect wire (violet)  
Lever to open battery compartment  
Swing-out battery compartment  
Quick-connect power connector  
12  
 
3. Plug the power connector into  
the back of the CO alarm.  
SINGLE-STATION INSTALLATION  
Tools needed: Standard/Flathead screwdriver.  
4. Position the base of the alarm  
over the mounting bracket and  
DANGER!  
turn. The alarm can be  
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.  
positioned over the bracket every 60°. Turn the  
unit clockwise (right) until the unit is in place.  
5. If you are only installing one unit, restore  
power to the junction box.  
6. Make sure the unit is receiving AC power.  
Under normal operation, the red indicator  
light will shine continuously.  
To install this unit:  
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.  
7. 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.  
2. Using wire nuts, connect the  
power connector to the AC power.  
Connect the white wire on the  
power connector to the neutral  
wire in the junction box.  
Connect the black wire on the  
power connector to the hot wire  
in the junction box.  
Tuck the violet wire inside the  
junction box. It is used for  
interconnect only.  
DANGER!  
ELECTRICAL SHOCK HAZARD. Do not  
restore power until all CO alarms are  
completely installed. Restoring power before  
installation is complete may result in serious  
electrical shock, injury or death.  
13  
 
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:  
INTERCONNECTING MULTIPLE  
CO ALARMS  
Interconnecting Multiple CO Alarms  
6
7
8
B
A
}
}
On Initiating Alarm  
Red LED flashes rapidly  
5
4
3
5
4
3
2
On All Other Alarms Red does not flash  
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.  
1
1
A
Unswitched 120VAC 60Hz source  
B
To additional Model CO5120B  
CO Alarms, Maximum = 18 alarms  
WARNING!  
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.  
1
2
3
4
5
6
7
8
Carbon Monoxide alarm  
Ceiling or wall  
Power connector  
Wire nut  
Junction box  
IMPORTANT!  
Interconnect units within a single family residence  
only. Otherwise all households 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  
Neutral (white) AC wire  
Interconnect wire (violet)  
Hot (black) AC wire  
®
met. It is recommended only BRK Electronics  
carbon monoxide alarms CO5120B be  
interconnected.  
14  
 
3. Using wire nuts, connect the power connector  
to the AC power.  
Interconnected units must meet ALL of  
the following requirements:  
Connect the white wire on the  
power connector to the neu-  
A maximum of 18 units total may be  
interconnected. (See page 13 for  
details.)  
tral wire in the junction box  
Connect the black wire on  
.
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.  
the power connector to the  
hot wire in the junction box.  
Connect the violet wire on the  
power connector to the inter-  
connect 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 violet interconnect wire.  
If an interconnect wire is not already  
part of your household wiring, you will  
need to install one.  
Failure to meet any of the above  
requirements could damage the units and  
cause them to malfunction, removing your  
protection.  
4. Plug the power connector  
into the back of the CO alarm  
.
5. Position the base of the  
alarm over the mounting  
bracket and turn. The alarm  
can be positioned over the  
bracket every 60°. Turn the  
TO INSTALL:  
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.  
unit clockwise (right) until the unit is in place.  
DANGER!  
2. Strip off about 1/2” of the plastic coating on  
the violet interconnect wire on the power  
connector.  
ELECTRICAL SHOCK HAZARD. Do not  
restore power until all CO alarms are  
completely installed. Restoring power before  
installation is complete may result in serious  
electrical shock, injury or death.  
15  
 
6. Make sure each unit is receiving AC power.  
Under normal operation, the red light (LED)  
will shine continuously.  
IMPORTANT!  
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.  
7. Test each CO alarm. Press and hold the test  
button until the unit alarms: 4 beeps, pause,  
4 beeps, pause.  
IMPORTANT!  
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.  
CHAPTER 3: If Your CO Alarm Sounds  
the premises have been aired out, and your  
CO alarm remains in its normal condition.  
WARNING!  
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!  
(Do not remove or disconnect the alarm!)  
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.  
If the 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:  
________________________________________  
3. Immediately move (everyone) 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,  
16  
 
Note any combustion equipment not inspected  
by the technician, and consult the  
light). If you press the Test/Silence on any  
other alarm, it will only silence that unit, not  
the whole interconnected series.  
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:  
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.  
_______________________________________  
While the detector is silenced:  
Using the Silence Feature  
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...  
WARNING!  
NEVER disconnect the power to your CO  
alarm to silence the hornuse the silence  
feature. Disconnecting the CO alarm removes  
your protection! See previous page for details  
on responding to an alarm.  
This means... CO levels are still potentially  
dangerous.  
If the CO alarm...remains silent....  
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.  
This means...unit has returned to normal  
operation.  
Finding the Source of CO  
After an Alarm  
When CO reaches the Alarm” level, it 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.  
Because CO may dissipate by the time an  
investigator arrives, it may be difficult to locate  
the source of CO. See Chapter 5 “What You Must  
Know About CO.” BRK Brands, Inc. shall not  
be obligated to pay for any carbon monoxide  
investigation or service call.  
To silence an interconnected series of alarms,  
you must press the Test/Silence button on the  
initiating alarm (the unit with the ashing red  
17  
 
The “ Latching Alarm” Indicator:  
KEY:  
LATCHING ALARM:  
Unit was exposed  
to alarm levels of CO  
BEDROOM  
BEDROOM  
BEDROOM  
GARAGE  
LATCHING NOT ACTIVATED:  
Unit was not exposed  
to alarm levels of CO  
KITCHEN  
HALL  
LIVING ROOM  
BASEMENT  
Non-Interconnected or Stand-Alone Alarm  
Latching Alarm Indicator shows that the unit  
was exposed to alarm levels of CO.  
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 using the test button.  
Interconnected Alarms  
Latching Alarm Indicator shows which alarm(s)  
in the series were exposed to alarm levels of  
carbon monoxide.  
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.  
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.  
18  
 
CHAPTER 4: Testing and Maintenance  
NOTE: The low battery warning should last for  
Weekly Testing  
30 days, but you should replace the battery  
immediately to continue your protection.  
Push and hold the Test/Silence button on the  
cover until a loud alarm sounds— 4 beeps, a  
pause, then 4 beeps. The alarm sequence should  
last for 10 seconds. If the alarm ever fails to test  
properly, replace it immediately. If the CO alarm  
is not working properly, refer to Chapter 10:  
Limited Warranty.  
Choosing a replacement battery:  
This unit requires one standard 9V alkaline battery.  
The following alkaline batteries are acceptable as  
replacements. This list supplements the list on the  
carbon monoxide alarm battery door: Eveready  
#522 (Energizer); Duracell #MN1604, MX1604  
(Ultra). You may also use a Lithium battery like an  
Ultralife U9VL-J for longer service between  
battery changes. These batteries are available at  
many local retail stores. Replacement batteries  
are commonly available at local retail stores.  
WARNING!  
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.  
WARNING!  
IMPORTANT!  
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.  
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.  
Regular Maintenance  
CAUTION!  
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  
permanently damage the CO alarm.  
To keep the CO alarm in good working order:  
Test it every week using the  
Test/Silence button.  
Vacuum the CO alarm cover at least twice  
a year, using the soft brush attachment.  
Test the alarm again after vacuuming.  
IMPORTANT!  
Household cleaners, aerosol chemicals and other  
contaminants can affect the sensor. When using  
any of these materials near the alarm, make sure  
the room is well ventilated.  
Replace the battery when the CO alarm  
“chirps” and the red light flashes once a  
minute (the low battery warning).  
19  
 
CHAPTER 5: What You Need To Know About CO  
What is CO?  
CAUTION!  
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.  
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 maintained, 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.  
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:  
Symptoms of CO Poisoning  
These symptoms are related to CO POISONING  
and should be discussed with ALL household  
members.  
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.  
House well ventilated before the  
investigator arrives.  
Problem caused by “backdrafting.”  
Transient CO problem caused by  
special circumstances.  
BRK Brands, Inc. shall not be obligated to pay  
for any carbon monoxide investigation or  
service call.  
20  
 
The following conditions can result in  
transient CO situations:  
Potential Sources Of CO  
In The Home  
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).  
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.  
Fuel-burning appliances like: portable heater,  
gas or wood burning fireplace, gas kitchen range  
or cooktop, gas clothes dryer.  
Damaged or insufcient venting: corroded or  
disconnected water heater vent pipe, leaking  
chimney pipe or flue, or cracked heat exchanger,  
blocked or clogged chimney opening.  
Improper use of appliance/device: operating a  
barbecue grill or vehicle in an enclosed area (like  
a garage or screened porch).  
Transient CO Problems: transient” or on-  
again-off-again CO problems can be caused by  
outdoor conditions and other special  
circumstances.  
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.  
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.  
21  
 
to the outside. Do not use portable/out-  
door grills or barbecue indoors, or in  
garages or on screen porches.  
Check for exhaust backflow from CO  
sources. Check the draft hood on an oper-  
ating furnace for a backdraft. Look for  
cracks on furnace heat exchangers.  
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 signifi-  
cantly decrease CO levels.  
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.  
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:  
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 back-  
drafting. Never “cap” or cover a chimney  
in any way that would block air flow.  
Test and maintain all fuel-burning equip-  
ment annually. Many local gas or oil com-  
panies and HVAC companies offer  
In addition, familiarize yourself with the  
enclosed checklist, read this manual in its  
entirety, and make sure you understand what  
to do if your CO alarm sounds.  
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 appli-  
ances. Make sure appliances are vented  
22  
 
CHAPTER 6: Underwriters Laboratories Inc. UL2034  
What Levels of CO Cause an Alarm?  
IMPORTANT!  
Underwriters Laboratories Inc. UL2034 defines 3  
specific alarm points by which all residential CO  
alarms must alarm. They are measured in parts  
per million (ppm) of CO over time (in minutes).  
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.  
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  
alarms. However, people with cardiac or  
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  
of CO, IT MUST ALARM BETWEEN  
60 and 240 MINUTES.  
IMPORTANT!  
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  
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 min-  
utes may not affect average, healthy  
adults, but after 4 hours the same level  
may cause headaches.  
poisoning, consult your doctor immediately!  
WARNING!  
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.  
An exposure to 400 ppm of CO may cause  
headaches in average, healthy adults after  
35 minutes, but can cause death after  
2 hours.  
23  
 
CHAPTER 7: Troubleshooting Guide  
DANGER!  
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 rst may result in serious electrical shock, injury or death.  
The following guide can help you identify a potential problem with the installation or operation of your  
CO alarm. 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.  
If your CO alarm does this... It means...  
You should...  
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.  
Red light flashes once a minute Alarm is not receiving  
Unit is operating on DC battery back-up.  
Check the AC power supply.  
(horn is silent).  
AC power.  
Once a minute, the red light  
flashes and the horn chirps”.  
Low battery warning.  
Replace the battery in the battery back-up.  
Once a minute, the alarm  
sounds 3 quick “chirps”, and  
the red light flashes quickly  
three times.  
Unit malfunction. Unit  
needs to be replaced.  
Units under warranty should be returned to  
manufacturer for replacement. See Chapter 8  
Limited Warranty” for details.  
CO alarm goes back into alarm CO levels are  
Refer to Chapter 3 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.  
4 minutes after you press the  
Test/Silence button.  
still potentially  
dangerous.  
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  
Relocate your alarm. If frequent alarms continue,  
have home rechecked for potential CO problems.  
You may be experiencing an intermittent CO  
Install Your CO Alarm.” problem.  
If you have questions you cannot answer by reading the manual, call Consumer Affairs at 1-800-323-9005.  
24  
 
UNDERSTANDING THE LIGHT AND HORN PATTERNS (AC POWER ON)  
When the CO Alarm is operating on AC power...  
Condition  
LED (Red Light)  
Horn  
POWER UP  
LED flashes ON once,  
then shines continuously  
Horn “chirps” once.  
DURING TESTING  
LED flashes once every second  
during the 10-second test cycle  
Horn pattern: 4 beeps,  
pause, 4 beeps, pause.  
MISSING BATTERY  
(DC back-up disabled)  
LED shines continuously  
LED shines continuously  
Horn is silent.  
LOW BATTERY  
Horn “chirps” once a minute.  
ALARM CONDITION  
Single CO Alarm  
(not interconnected)  
LED flashes rapidly,  
once every second  
Horn pattern: 4 beeps,  
pause, 4 beeps, pause,  
repeating.  
ALARM CONDITION  
Interconnected  
Series of CO Alarms  
LED flashes rapidly on the unit  
that triggered the alarm. LEDs  
on the other alarms in the series  
will not flash.  
Horn pattern: 4 beeps,  
pause, 4 beeps, pause  
repeating, on all CO  
alarms.  
IN SILENCE MODE  
LED flashes rapidly,  
once every second  
Horn stays quiet for 4 minutes.  
LATCHING” ALARM  
INDICATOR  
LED flashes  
once every 5 seconds  
Horn stays quiet.  
MALFUNCTION  
LED flashes 3 times  
synchronized with 3 rapid chirps  
Horn sounds 3 rapid chirps  
(chirp-chirp-chirp”) every  
minute.  
25  
 
UNDERSTANDING THE LIGHT AND HORN PATTERNS (AC POWER OFF)  
When AC power is Off, and CO alarm is operating on battery back-up...  
Condition  
LED (Red Light)  
Horn  
BATTERY BACK-UP  
POWER UP  
LED flashes ON once,  
then flashes once per minute  
Horn “chirps” once.  
DURING TESTING  
LED flashes once every second  
during the 10-second test cycle  
Horn pattern: 4 beeps,  
pause, 4 beeps, pause.  
MISSING OR DEAD  
BATTERY (DC back-  
up disabled)  
LED is OFF  
Horn is silent.  
WARNING: When the AC power is Off, if the battery is dead or missing, the CO alarm cannot work.  
LOW BATTERY  
LED flashes once per minute  
Horn “chirps” once a minute.  
ALARM CONDITION  
Single CO Alarm  
(not interconnected)  
LED flashes rapidly,  
once every second  
Horn pattern: 4 beeps,  
pause, 4 beeps, pause,  
repeating.  
ALARM CONDITION  
Interconnected  
Series of Alarms  
LED flashes rapidly on the unit  
that triggered the alarm. LEDs  
on the other alarms in the series  
will not flash.  
Horn pattern: 4 beeps,  
pause, 4 beeps, pause  
repeating, on all CO  
alarms.  
IN SILENCE MODE  
LED flashes rapidly,  
once every second  
Horn stays quiet for 4 minutes.  
LATCHING” ALARM  
INDICATOR  
LED flashes  
once every 5 seconds  
Horn stays quiet.  
MALFUNCTION  
LED flashes 3 times  
synchronized with 3 rapid chirps  
Horn sounds 3 rapid chirps  
(chirp-chirp-chirp”) every  
minute.  
26  
 
CHAPTER 8: General Limitations Of CO Alarms  
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 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.  
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.  
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. 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,  
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.  
27  
 
NOTES  
 
NOTES  
29  
 
Limited Warranty  
BRK Brands, Inc. warrants the enclosed  
Carbon Monoxide Alarm to be free from defects  
in materials and workmanship under normal use  
and service for a period of five years from date of  
purchase. BRK Brands, Inc. makes no other  
express warranty for this alarm.  
No agent, representative, dealer, or employee of  
the Company has the authority to increase or alter  
the obligations or limitations of this warranty. The  
Company’s obligations under this warranty shall  
be limited to the replacement of the alarm if it is  
found to be defective in materials or workmanship  
under normal use and service during the  
applicable period from date of purchase. During  
the initial one-year period from the date of  
purchase, such replacement shall be made  
without charge. During the latter four years of the  
warranty period, such replacement shall be made  
at a charge to the Customer not to exceed the  
manufacturer’s cost.  
BRK Brands, Inc. makes no warranty, expressed  
or implied, written or oral, including that of  
merchantability or fitness for any particular  
purpose, with respect to the battery.  
The Company shall not be obligated to replace  
products which are found to be in need of repair  
because of damage, unreasonable use,  
modifications, or alterations occurring after the  
date of purchase.  
The duration of any implied warranty, including  
that of merchantability or tness for any  
particular purpose, shall be limited to the  
period of ve years commencing with the date  
of purchase. Some states do not allow  
limitations on how long an implied warranty  
lasts, so the above limitation may not apply to  
you. In no case shall the Company be liable for  
any consequential or incidental damages for  
breach of this or any other warranty, expressed  
or implied whatsoever, even if the loss or  
damage is caused by the Companys  
negligence or fault.  
Some states do not allow the exclusion or  
limitation of incidental or consequential  
damages, so the above limitation or  
exclusion may not apply to you. This  
warranty gives you specic legal rights, and  
you may also have other rights which vary  
from state to state.  
During the specified warranty period, products  
should be returned with purchase receipt,  
shipping prepaid, to: Consumer Affairs,  
BRK Brands, Inc., 3920 Enterprise Ct., Aurora, IL  
60504-8132, USA. Please enclose a note  
describing the problem.  
For your records, please record:  
Date Purchased:  
Where Purchased:  
®
BRK Electronics is a registered trademark  
M06-1046-001 6/00  
of BRK Brands, Inc.  
 

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