Gentek Carbon Monoxide Alarm CO1209 User Manual

CO1209 SERIES  
ELECTROCHEMICAL CARBON  
MONOXIDE (CO) ALARM  
ELECTROCHEMICAL TYPE SINGLE/MULTIPLE STATION  
CARBON MONOXIDE ALARM, AC POWERED, WITH BATTERY BACK-UP  
& TANDEM WIRE CONNECTION  
Installation Instructions - Owner's/User’s Information Manual -READ CAREFULLY AND SAVE  
quiet the alarm horn. If critical levels of CO remain, the alarm will  
re-activate and sound.  
INTRODUCTION CO1209 SERIES  
The CO1209 electrochemical carbon monoxide (CO) alarm is for  
use as an evacuation device in all dwelling units. The device has a  
solid state piezo signal to warn and alert the occupants to the  
presence of carbon monoxide.  
Your CO alarm is designed to detect abnormal amounts of  
carbon monoxide gas, only. Consequently, it is uncommon for  
household sources of combustion, including properly functioning  
household appliances, to produce sufficient levels of CO to cause an  
alarm.  
NOTICE: MALFUNCTION WARNING This unit performs a self-  
diagnostic test. If the alarm malfunctions it should be replaced  
immediately. See IF THE CO ALARM IS NOT OPERATING  
PROPERLY for more information.  
HOW TO TELL IF THE CO ALARM IS WORKING  
PROPERLY  
Your device is provided with an alarm horn and flashing red Light  
Emitting Diode (LED) indicator, which flashes every 15-30  
seconds, and a green AC power on LED and red LED for CO.  
BASIC SAFETY INFORMATION  
Dangers, Warnings, Cautions and notices alert you to important  
operating procedures or to potentially hazardous situations. Pay  
special attention to these items.  
WHAT YOU CAN DO TO MAKE YOUR FAMILY SAFE  
FROM CARBON MONOXIDE (CO)  
a. Install CO alarms properly following the instructions in  
this manual. Keep your units clean. Test your CO alarm  
weekly and replace when it no longer functions.  
As with any electronic product, CO alarms have a limited life,  
it is recommended that CO alarms be replaced every five (5)  
years. CO alarms that don't work cannot protect you.  
b. Develop a family escape plan and practice it with your  
entire family, especially small children.  
WARNING!  
This CO alarm is listed for use in single-family and multi-family  
residences, along with hotel, motels and other dwelling units.  
This CO alarm will only indicate the presence of increased levels  
of carbon monoxide gas at the sensor. Increased levels of carbon  
monoxide gas may be present in other areas.  
This CO alarm must receive continuous 120VAC, 60Hz , pure  
sine wave electrical power. (battery is meant for emergency  
back-up only). In order for the emergency battery back-up to work,  
a new battery must be properly installed (see BATTERY  
INSTALLATION section).  
NEVER ignore your CO alarm if it sounds. Refer to IF YOUR CO  
ALARM SOUNDS section for more information. Failure to do so  
can result in serious injury or death.  
Draw and post a floor plan of your home and find ways to  
exit from each room.  
Teach children what the CO alarm signal means, and that  
they must be prepared to leave the residence by themselves  
if necessary.  
Decide on a meeting place a safe distance from your house and  
make sure that all your children understand that they should go  
and wait for you if there is a CO alarm.  
Test this device once a week. If the device ever fails to test  
correctly, replace immediately! If the device is not working  
properly, it can not alert you to a problem.  
Hold CO drills at least every 6 months to make sure that  
everyone, even small children, know what to do to escape  
safely.  
This product is intended for use in indoor locations of family  
dwelling 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.  
Know where to go to call the fire department from outside your  
residence.  
WHAT TO DO IF THERE IS A CO EMERGENCY IN  
YOUR HOME  
If you have prepared family escape plans and practiced them with  
your family, you have increased their chances of escaping safely.  
Review the following rules with your children when you have CO  
drills so everyone will remember them in a real CO emergency. If  
alarm should sound:  
MODELS  
(SEE BACK OF CO ALARM FOR EXACT MODEL)  
a. Don't panic; stay calm. Your safe escape may depend on thinking  
clearly and remembering what you have practiced.  
b. Open windows or doors. Opening windows or doors can  
significantly reduce CO levels.  
CO1209..........................120VAC, 60Hz  
CO1209F........................120VAC, 60Hz with Form A/Form C auxilary  
relay contact  
c. Get out of the house following a planned escape route as quickly  
as possible. Do not stop to collect anything or to get dressed.  
d. Meet at your prearranged meeting place after leaving the house.  
e. Call the Fire Department as soon as possible from outside your  
house. Give the address and your name.  
f. Never re-enter the building while the device is in alarm.  
Contact your local Fire Department for more information on  
making your home safer from CO and about preparing your family's  
escape plans.  
NOTICE: In the event AC Power fails, a 9VDC battery will provide  
proper alarm operation for a minimum of 24 hours.  
HOW THE CO ALARM WORKS  
GENERAL INFORMATION  
NOTICE: CO problems can occur at any time.  
When fully powered, the device samples the air and takes a new  
reading about every 30 seconds. A microchip inside the unit stores  
each reading and remembers the levels of CO it has been exposed  
to over time. The CO alarm will sound 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). This CO alarm features a  
permanently installed sensor, an indicator light and an 85dBA,  
temporal 4 alarm horn. It also has a reset feature to temporarily  
NOTE: Current studies have shown CO alarms may  
not awaken all sleeping individuals, and that it is  
the responsibility of individuals in the household  
550-0498  
Pg. C-1  
 
To help prevent CO problems and reduce the risk of CO poisoning:  
Clean chimneys and flues yearly. Keep them free of debris,  
leaves, and nests for proper air flow. Also, have a professional  
check for rust and corrosion, cracks or separations. These  
conditions can prevent proper air movement and cause  
backdrafting. Never cap or cover a chimney in any way that  
would block air flow.  
Test and maintain all fuel-burning equipment annually. Many local  
gas or oil companies and HVAC companies offer appliance  
inspections for a nominal fee.  
Make regular visual inspections of all fuel-burning appliances.  
Check appliances for excessive rust and scaling. Also check the  
flame on the burner and pilot lights. The flame should be blue. A  
yellow flame means fuel is not being burned completely and CO  
may be present. Keep the blower door on the furnace closed.  
Use vents or fans when they are available on all fuel-burning  
appliances. Make sure appliances are vented to the outside. Do  
not grill or barbecue indoors, in garages or on screen porches.  
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.  
These conditions can come and go, they are also hard to recreate  
during a CO investigation.  
PLACEMENT OF CO ALARMS  
THIS EQUIPMENT SHOULD BE INSTALLED IN ACCORDANCE  
WITH THE NATIONAL FIRE PROTECTION ASSOCIATION'S  
STANDARD 720 (National Fire Protection Association, Batterymarch  
Park, Quincy, MA 02269).  
For your information, the National Fire Protection Association's  
Standard 720, reads as follows:  
NFPA 720, 2009 Edition, Chapter 9, Section 9.4.1.1 Where required  
by applicable laws, codes or standards for a specific type of  
occupancy, approved single and multiple-station CO alarms shall be  
installed as follows:  
1) Outside of each separate dwelling unit sleeping area in the  
immediate vicinity of the bedrooms.  
2) On every occupiable level of a dwelling unit, including basements,  
excluding attics and crawl spaces.  
3) Other locations where required by applicable laws, codes or  
standards.  
The installation of additional CO alarms should result in a higher  
degree of protection. Adding alarms to rooms that are normally  
closed off from the required alarms increases the escape time  
because the CO levels do not need to build to the higher level  
necessary to force CO out of the closed room to the required alarms.  
As a consequence, it is recommended that the householder consider  
the installation of additional CO protection devices. However, it  
should be understood that NFPA 720 does not require additional CO  
alarms over and above those called for in Figures 2, 3, 4 and 5  
where required CO alarms are shown.  
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 door. Opening  
windows or doors can significantly reduce CO levels.  
POTENTIAL SOURCES OF CO IN RESIDENTIAL  
DWELLINGS  
Fuel-burning appliances like: portable heater, gas or wood  
burning fireplace, gas kitchen range or cooktop, gas clothes dryer,  
portable generators.  
Figure 2  
Damaged or insufficient venting: corroded or disconnected  
water heater vent pipe, leaking chimney pipe or flue, or cracked heat  
exchanger, blocked or clogged chimney opening.  
Improper use of appliance/device: operating a barbecue grill,  
portable generator or vehicle in an enclosed area (like a garage or  
screened porch), or even your home.  
Figure 1  
Figure 2: A CO ALARM MUST BE LOCATED ON EVERY LEVEL OF  
DWELLING UNIT, INCLUDING BASEMENT AND OUTSIDE SLEEP-  
ING AREAS.  
Where to Locate the Required CO Alarms. The major threat from  
CO in a dwelling unit occurs at night when everyone is asleep.  
Persons in sleeping areas can be threatened by CO levels in the  
remainder of the unit; therefore, CO alarms are best located between  
the bedroom areas and the rest of the unit as shown in Figure 3.  
Figure 3  
Figure 1: POTENTIAL SOURCES OF CO IN HOME.  
Transient CO Problems: transient or on-again-off-again CO  
problems can be caused by outdoor conditions and other special  
circumstances.  
The following conditions can result in transient CO situations:  
1) Excessive spillage or reverse venting of fuel appliances caused by  
outdoor conditions such as:  
Figure 3: A CO ALARM MUST BE LOCATED BETWEEN THE  
SLEEPING AREA AND THE REST OF THE DWELLING UNIT.  
In dwelling units with more than one bedroom area or with  
bedrooms on more than one floor, more than one CO alarm is  
required, as shown in Figure 4.  
Wind direction and/or velocity, including high, gusty winds. Heavy  
air in vent pipes (cold/humid air with extended periods between  
cycles).  
Negative pressure differential resulting from the use of exhaust  
fans.  
Figure 4  
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.  
Figure 4: IN DWELLING UNITS WITH MORE THAN ONE  
SLEEPING AREA, A CO ALARM MUST BE PROVIDED TO  
PROTECT EACH SLEEPING AREA.  
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 garage or near a home.  
5) Portable generator used in an open or closed garage or near a  
home.  
550-0498  
Pg. C-3  
 
In addition to CO alarms outside of the sleeping areas, NFPA  
720 requires the installation of a CO alarm on each additional level  
of the dwelling unit, including the basement. These installations are  
shown in Figure 5. The living area CO alarm should be installed in  
the living room or near the stairway to the upper level, or in both  
locations. The basement CO alarm should be installed in close  
proximity to the stairway leading to the floor above. Where installed  
on an open-joisted ceiling, the CO alarm should be placed on the  
bottom of the joists. The CO alarm should be positioned relative to  
the stairway so as to intercept CO coming from the basement before  
CO enters the stairway.  
Figure 7  
Figure 7: RECOMMENDED CO ALARM LOCATION IN ROOMS  
WITH SLOPED, GABLED, OR PEAKED CEILINGS.  
The placement of the CO alarm is critical if maximum speed of CO  
detection is desired. Thus, a logical location for a CO alarm is the  
center of the ceiling. At this location, the device is closest to all  
areas of the room.  
Figure 5  
WHERE CO ALARMS SHOULD NOT BE INSTALLED  
DO NOT INSTALL THIS CO ALARM:  
In garages, kitchens, furnace rooms, or in any extremely dusty,  
dirty or greasy areas.  
Closer than 15 feet (4.6 meters) from a furnace or other fuel  
burning heat source or fuel burning appliance like a water heater.  
Within 5 feet (1.5 meters) of any cooking appliance  
Near any type of diaper pails or receptacle.  
Near animal litter boxes, cages or kennels.  
In extremely humid areas. This alarm should be at least 10 feet (3  
meters) from a bath or shower, sauna, humidifier, vaporizer, dish  
washer, 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 non-air conditioned crawl  
spaces, unfinished attics, uninsulated or poorly insulated ceilings,  
porches and garages.  
Figure 5: A CO ALARM MUST BE LOCATED ON EACH LEVEL.  
Are More CO Alarms Desirable? The required number of CO  
alarms might not provide reliable early warning protection for those  
areas separated by a door from the areas protected by the required  
CO alarms. For this reason, the use of additional CO alarms for  
those areas for increased protection is recommended. The  
additional areas include the basement, bedrooms, dining room,  
furnace room, utility room, and hallways not protected by the  
required CO alarms. The installation of CO alarms in kitchens, attics  
(finished or unfinished), or garages is not normally recommended,  
because these locations occasionally experience conditions that can  
result in improper operation.  
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  
IMPORTANT SAFETY MESSAGES  
This CO alarm is designed for use inside a single or multi-  
family dwelling. It is not meant to be used in common  
lobbies, hallways, or basements of multi-family buildings  
unless working alarms are also installed in each family living  
unit. CO alarms in common areas may not be heard from  
inside individual family living units.  
IMPORTANT CONSIDERATION  
NFPA states the following for replacement of CO alarms:  
NFPA 720, 2009 Edition, Chapter 8, Section 8.10.2 states: Alarms  
shall be replaced when either the end-of-life signal is activated or the  
manufacturer’s replacement date is reached. Alarms shall also be  
replaced when they fail to respond to operability tests.  
This CO alarm is not a suitable substitute for complete  
detection systems in places which house many people like  
hotels or dormitories, unless a CO alarm is also placed in  
each unit.  
DO NOT use this CO alarm in warehouses, industrial or  
commercial buildings, special-purpose non-residential  
buildings or airplanes. This CO alarm is specifically designed  
for residential use and may not provide adequate protection  
in non-residential applications.  
MOUNTING LOCATION  
CO alarms can be installed and mounted on the wall or ceiling with  
equal efficiency in either location. However, the CO alarm must be  
mounted in such a way as not to interrupt device function by  
jarring or vibration.  
Ceiling location - CO alarm should be mounted as close as  
possible to the center of a hallway or room. If this is not possible,  
the edge of the CO alarm should be at least 4 inches from any  
wall.  
Wall location - locate the top of the CO alarm at least 4 inches  
and not more than 12 inches from the ceiling.  
Never disconnect an AC CO alarm to silence a  
nuisance alarm. Open a window or fan the air around the CO alarm.  
The alarm will automatically turn off when the CO in the air is  
completely gone. Do not stand close to the CO alarm. The sound  
produced by the CO alarm is loud because it is designed to awaken  
you in an emergency. Prolonged exposure to the horn at a close  
distance may be harmful to your hearing.  
Figure 6  
INSTALLATION CO1209 SERIES  
NOTICE: New Construction: DO NOT attach CO alarm until AFTER  
sanding, painting, and other dust creating situations are  
finished and cleaned up.  
WIRING/GENERAL  
1. Use U.L. Listed cable with Class 1 insulation.  
2. Observe local code requirements. Use box connector to anchor  
cable to outlet box.  
3. Metal outlet boxes must be grounded to earth ground.  
4. NOTICE: Use only Duracell MN 1604 battery with the  
CO1209 Series CO alarms. Available at many retail stores.  
Figure 6: RECOMMENDED CO ALARM MOUNTING LOCATIONS  
Turn off electricity to prevent SHOCK and damage to  
CO alarm. Be sure the power line to the CO alarm is not controlled  
by any on/off switch, or other type of switch, other than a fuse or  
circuit breaker.  
NOTICE: Ensure that all fluorescent lighting fixtures are properly  
grounded.  
550-0498  
Pg. C-4  
 
NOTE: The wiring to be used shall be in accordance with the  
provisions of Article 210 of the National Electrical Code, ANSI/NFPA  
70. Wire installation should be performed only by a licensed  
electrician.  
Figure 10  
LIMITATIONS:  
Maximum of 12  
CO alarms may be  
connected  
MOUNTING OUTLET BOX  
Use a 2" x 3" switch box or a 4" square or octagon junction box.  
Mount a box for each CO alarm. If wall mounting is desired, be sure  
the box screws are oriented to upper right and lower left corners. Be  
sure to use supplied Mounting Plate.  
together. Do not  
exceed 125 feet  
between each CO  
alarm. Do not  
exceed 1125 feet  
between the first  
and last CO alarm.  
WIRING ONE ALARM  
1. Run a minimum of 16 gauge, 2-conductor cable, plus ground (3  
wires) to the junction box from a power supply. CO alarms shall  
be connected to their own dedicated circuit. Use UL Listed Class  
1 wire.  
NOTE: The wiring to be used shall be in accordance with the  
provisions of Article 300.3(b) 210 of the National  
Electrical Code, ANSI/NFPA 70 as well as Article 210.  
2. Make wire connections to the supplied plug-in connector as  
follows: black to black, white to white, and connect the ground  
wire to the metal outlet box.  
3-WIRE CABLE  
AND GROUND  
120VAC  
Figure 9  
BLACK  
1. Run a minimum of 16 gauge, 3-conductor cable, plus ground (4  
wires) to the first junction box from a power supply and between  
all CO alarms that are to be connected together. Use UL Listed  
Class 1 wire.  
NOTE: When using both tandem connections, 4-conductor  
cable, plus ground (5 wires) will be used.  
2. Make wire connections to the supplied plug-in connector as  
follows: black to black, white to white, 3rd conductor to the  
red/yellow wire for legacy Gentex products or the brown/yellow  
wire for new. The red/yellow wire or brown/yellow wire should be  
stripped to make the connection. Connect ground wire between  
metal outlet boxes.  
UNINSULATED WIRE  
EARTH GROUND -  
FOR METAL BOXES  
ONLY  
RED-YELLOW OR  
BROWN-YELLOW WIRE  
WHITE  
NOTE: RED-YELLOW WIRE AND BROWN-YELLOW WIRE: The  
red-yellow wire and brown-yellow wire from the CO alarm is for  
tandem connection only. DO NOT USE, AND DO NOT REMOVE  
INSULATION CAP UNLESS CONNECTING ANOTHER CO ALARM,  
SMOKE/CO ALARM OR SMOKE ALARM.  
BLACK  
4-WIRE CABLE  
AND GROUND  
120VAC  
Figure 11  
UNINSULATED WIRE  
EARTH GROUND -  
FOR METAL BOXES  
ONLY  
WHITE  
RED-YELLOW  
BROWN-YELLOW WIRE  
NOTES ON TANDEM INTERCONNECTING MODELS  
DO NOT connect Gentex CO alarms to other manufacturers'  
CO alarms.  
No more than 12 Gentex models CO1209 may be tandem  
interconnected.  
All units connected in tandem MUST get their power from the  
same circuit, that is, all CO alarms in tandem must be controlled  
by the same fuse or circuit breaker.  
WIRING TWO OR MORE ALARMS  
Tandem Installation  
NOTE: All CO alarms in a tandem installation must be  
controlled by the same fuse or circuit breaker. Otherwise tandem  
units will not operate. Tandem will operate in the event of AC power  
failure if battery is connected to the CO alarm.  
LIMITATIONS: A maximum of 12 CO alarms (CO1209) may be  
connected together. Do not exceed 125 feet between each device.  
Do not exceed 1125 feet between first and last CO alarm.  
Wire used for interconnection shall be in accordance with article  
760 of the latest edition of National Electrical Code (NFPA 70) and  
must not exceed a resistance of 10 ohms.  
After installation, to verify proper working conditions, all horns must  
sound in this system.  
When tandem interconnecting CO1209 Series to additional  
CO1209 Series, GN-503 Series or GN-403 Series and the smoke  
alarm horn sounds but are not synchronized and the CO horn  
does not sound the red/yellow wire has been used. Use brown/  
yellow wire.  
Use red/yellow wire to tandem interconnect CO1209 alarms to  
Gentex legacy products. Legacy products include 9120/9123  
Series, 7100/7103 Series, 710CS/713CS Series, 7109CS/7139CS  
Series, GN-200/GN-203 Series and GN-300/GN-303 Series.  
Use brown/yellow wire to tandem interconnect CO1209 Series  
alarms to additional CO1209 Series alarms, GN-403 Series and  
GN-503 Series.  
If the red/yellow wire is used to interconnect the GN-503 Series to  
additional GN-503 Series, GN-400/GN-403 Series and CO1209  
Series, the units will not be tandem inteconnected. The brown/  
yellow wire MUST be used.  
550-0498  
Pg. C-5  
 
Do not tandem using both the red/yellow wire and brown/yellow  
wire. Only 1 tandem interconnect wire is needed between units.  
CAUTION: Failure to observe any of the conditions set forth may  
CHECKOUT & TROUBLESHOOTING  
1. Supply house power to the CO alarm, green indicator will be on.  
The red indicator light should flash approximately every 15-30  
seconds, showing that the CO alarm is operating properly.  
2. If red light is not flashing or the green LED is not on:  
a. Check that AC power is working.  
cause system malfunction and damage to the alarm.  
BATTERY INSTALLATION  
1. Locate side mounted battery drawer.  
b. Check that the battery is installed.  
2. Open battery drawer by firmly pulling on side lip, then sliding  
battery drawer open.  
c. Push test button. Alarm will go into self test mode.  
d. Check the connector plug and wire connections. NOTE: Be  
sure you turn off power before checking wire connections.  
e. If the power supply and wiring check out, but the red light does  
not flash or the green LED is still off, return the unit to the  
manufacturer. See TO RETURN A CO ALARM section.  
3. When powering up devices in a tandem installation and all  
the alarms sound immediately, inspect all devices for a solid  
green LED. Verify wiring of units, if wiring checks and problem  
remains the devices with flashing red LED are the trouble units  
and should be replaced.  
3. Insert battery into drawer, terminal side first. Take care to make  
sure the appropriate terminal is aligned correctly, (+) terminal on  
battery to (+) terminal on alarm metal contact and (-) terminal on  
battery to (-) terminal on the alarm metal contact.  
4. Rotate battery into drawer and close drawer. Note: the battery  
drawer will not close if the battery is installed incorrectly.  
5. Slide battery drawer shut until it is snapped into place.  
6. Use only Duracell MN 1604 battery with the CO1209 CO alarm.  
NOTE: Units with battery back-up will not provide power or transmit  
an alarm to other AC only units in the event of an AC power failure.  
All battery back-up units in tandem with good batteries will operate  
normally during an AC power failure a minimum of 24 hours.  
IF YOUR CO ALARM SOUNDS  
Actuation of the CO alarm (temporal 4 tone) indicates the  
presence of carbon monoxide (CO) which can kill you. If the  
CO alarm sounds, do not ignore the unit!  
Figure 12  
Enclosed with the unit are two (2) labels to add the telephone  
numbers of the emergency service provider and a qualified  
technician. Once CO alarm is installed, place one (1) label next  
to the CO alarm and place the other label near the fresh air  
source at your prearranged meeting place after leaving the  
house.  
IF THE ALARM SIGNAL SOUNDS:  
1. Operate the Test/Reset button. While the alarm has been reset,  
the device will continue to monitor the air for the presence of CO.  
If the alarm sounds again after 5 minutes there are CO levels that  
are potentially dangerous.  
2. Call emergency services, fire department or 911. Write the  
number of your local emergency service here:  
MOUNTING: PLATE & CO ALARM  
1. Lace the connector through the provided mounting plate and  
secure the plate to the junction box.  
2. Plug the wire connector into the CO alarm base.  
Figure 13  
3. Immediately move to fresh air - outdoors or by an open door or  
window. Meet at prearranged meeting place after leaving the  
house. Verify all persons are accounted for. Do not re-enter  
premises or move away from the fresh air until the emergency  
responder has arrived, the premise has been aired out and the  
CO alarm remains in normal condition.  
4 After following steps 1-3, if the 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 as well as 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:  
3. Place device up to mounting plate, rotating it clockwise until  
device firmly snap locks into place. Keep CO alarm parallel to  
the mounting plate so tabs on plate seat correctly into device.  
4. Remove dust-cover after all construction is complete. Dust-  
cover must be removed prior to power being supplied to the  
CO alarm. If the dust-cover is not removed, operation of CO  
alarm will be inhibited.  
PUSH BUTTON  
Figure 14  
FOR SELF TEST.  
POWER ON  
PUSH BUTTON  
INDICATOR  
AND HOLD UNTIL  
DEVICE ALARMS  
FOR  
FUNCTIONAL  
TEST  
CO INDICATOR  
NOTE: Remove dust-cover before operating CO alarm  
5. Press and release button for self test feature. Results of test:  
!  
“ALARM - MOVE TO FRESH AIR”  
If you hear the CO alarm horn and the red light is flashing, move  
everyone to a source of fresh air. DO NOT unplug the alarm!  
Alarm is silent - CO Alarm is in good working condition  
1 Chirp - Low battery. Replace battery following instructions in  
Battery Installation Section  
2 Chirps - CO Alarm has become dirty or defective or there is a  
large influx of CO. Clean (refer to Maintenance Section or  
warranty return.  
NOTICE: Alarms have various limitations. See “General  
3 Chirps - CO Alarm is at end of life and must be replaced.  
Limitations of CO Alarms” for details.  
550-0498  
Pg. C-6  
 
MAINTENANCE  
USING THE RESET FEATURE  
DO NOT open CO alarm for cleaning. IF CO ALARM IS  
OPENED, PRODUCT WARRANTY BECOMES VOID.  
The reset 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.  
CAUTION: If the device does not work properly, do not try and fix it  
yourself. This will void your warranty. See "TO RETURN A CO  
ALARM" for instructions to return CO alarms that do not operate  
properly. DO NOT TRY TO FIX IT YOURSELF.  
Gentex recommends CO alarms be tested a minimum of once a  
week. The test feature of your CO alarm accurately simulates CO  
conditions and tests the CO alarm's functions as required by  
Underwriters Laboratories.  
NOTICE: Do not cover, tape, or otherwise block the openings of your  
CO alarm. These openings are designed to allow air to pass  
through your CO alarm, thus sampling the air around the CO alarm.  
NOTICE: CO alarms are not to be used with detector guards  
unless the combination has been evaluated by a nationally  
recognized testing laboratory and found suitable for that  
purpose.  
NEVER remove the battery from your alarm to silence the  
horn; use the reset feature. Removing the battery, removes  
your protection! See “If Your CO Alarm Sounds” for details  
on responding to an alarm.  
The reset feature is intended to reset the CO alarm while the  
problem is corrected - IT WILL NOT CORRECT A CO PROBLEM.  
While the alarm has been reset, the device will continue to monitor  
the air for the presence of CO.  
When CO reaches alarm levels, the alarm will sound a repeating  
temporal 4 repeating horn pattern - 4 beeps, a pause, 4 beeps, a  
pause, etc. Press the reset button until the horn becomes silent.  
The initial reset cycle will last approximately 5 minutes.  
NOTE: After initial 5 minute reset cycle, the alarm will re-evaluate  
present CO levels and respond accordingly. If CO levels remain  
potentially dangerous, or increase to higher levels, the alarm will  
sound again.  
WEEKLY TESTING  
Press the test/reset button on the alarm until the alarm sounds.  
During testing the device will simulate a CO condition in the alarm.  
The alarm sequence should last 5-6 seconds. If the device does  
not go into alarm mode when tested, replace the device immediately.  
While the alarm is silenced:  
If the CO alarm:  
This means:  
CO levels are still  
potentially dangerous  
This means:  
Is silent for only 5 minutes,  
then the alarm sounds again  
If the CO alarm:  
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.”  
Remains silent after the test  
button has been pressed  
CO levels are dropping  
DO NOT stand close to the device when the alarm is  
sounding. Exposure at close range could result in hearing  
damage.  
TROUBLESHOOTING GUIDE  
Never use exhaust from vehicle to test CO portion of alarm.  
Exhaust may cause permanent damage to alarm and voids the  
warranty.  
PROBLEM:  
THIS MEANS:  
ACTION TAKEN:  
IF YOU ARE  
FEELING  
SYMPTOMS OF CO  
POISONING,  
TO KEEP THE ALARM WORKING PROPERLY:  
Test weekly as described in “Weekly Testing.”  
Keep alarm cover clean using soft cloth. DO NOT vacuum or use  
compressed air, water, cleaners or solvents to clean alarm.  
Replace battery immediately if low battery warning is heard. See  
“Battery Installation” section.  
CO alarm goes back  
into alarm 5 minutes  
after the reset button  
was pressed.  
CO levels indicate EVACUATE your home  
a potentially  
and call 911 or the Fire  
dangerous situation. Department. If not,  
press the reset button  
again and keep  
NOTICE: DO NOT spray cleaning chemicals or insect sprays  
directly on or near the alarm. DO NOT paint over the alarm.  
Doing so may cause permanent damage.  
ventilating your  
home.  
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.  
The CO alarm is not washable. DO NOT submerge the alarm in  
water. Water can affect the sensor, causing permanent damge.  
If your home is being fumigated, disconnect unit  
temporarily from wire harness and store where it will not be  
exposed to chemicals or fumes. When fumigation is complete  
and all traces of fumes clear, re-connect unit back to wire  
harness and push the reset button.  
Green light is OFF. Red  
light is not flashing.  
Unit will not go into test  
mode when test button  
is pressed.  
Device may not be  
Contact licensed  
receiving power.  
electrical technician for  
equipment inspection  
service, immediately.  
NO AC and no  
battery in device.  
Device has become  
dirty or defective or  
large influx of CO  
(over 1,000 ppm).  
Alarm sounds 2 quick  
chirps every 30  
seconds.  
Clean (refer to  
Maintenance Section)  
or warranty return.  
UNDERWRITERS LABORATORIES, INC. UL 2034  
WHAT LEVELS OF CO CAUSE AN ALARM  
UL Standard UL 2034 requires residential CO alarms to sound  
when exposed to levels of CO and exposure times as described  
below. CO levels are measured in part per million (ppm) of CO over  
time (in minutes).  
END OF LIFE  
SIGNAL. Device  
needs to be  
Contact Gentex  
Corporation for  
replacement  
Alarm sounds 3 quick  
chirps every 30  
seconds.  
replaced.  
information.  
UL 2034 Required Alarm Points1:  
Low or no battery in  
device  
If the CO alarm is exposed to 400ppm of CO, THE DEVICE MUST  
ALARM BETWEEN 4 - 15 MINUTES.  
Green light is ON and  
red light is not flashing  
and Alarm chirps once  
every 30 seconds  
Replace battery (refer  
to Battery Installation  
Section) or return to  
manufacturer  
If the CO alarm is exposed to 150 ppm of CO, THE DEVICE  
MUST ALARM BETWEEN 10 - 50 MINUTES.  
AC is powering  
device  
If the CO alarm is exposed to 70 ppm of CO, THE DEVICE MUST  
ALARM BETWEEN 60 - 240 MINUTES.  
Reset button is  
pressed. LED’s do not Device is not  
flash and device does operating properly. replacement  
not go into test mode. information.  
Contact Gentex  
Corporation for  
The device is designed not to alarm when exposed to a constant  
level of 30 ppm for 30 days.  
Any questions that are not answered within this manual, call Gentex  
Corporation at 1-800-436-8391.  
1 Approximately 10% COHb exposure at levels of 10% to 95%  
Relative Humidity (RH).  
550-0498  
Pg. C-7  
 
WARNING! CO alarms are designed to alarm before there is an  
immediate life threat. Since CO gas can not be seen or smelled,  
never assume it is not present.  
An exposure to 100 ppm of CO for 20 minutes may not affect a  
healthy adult, after 4 hours of exposure at the same level may  
cause headache.  
This alarm monitors the air at the device and is designed to  
alarm before CO levels become life threatening. This allows  
precious time to leave the house and correct the problem. This is  
only possible if the devices are properly located, installed and  
maintained as described in this manual.  
Gas Detection at Typical Temperature and Humidity Ranges:  
This device 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.  
An exposure to 400 ppm of CO may cause headaches in a healthy  
adult after 35 minutes and could cause death after 2 hours.  
NOTICE: This device measures exposure to CO over time. This  
device alarms if CO levels reach a certain minimum over an extend-  
ed amount of time. The device will go into alarm before the onset of  
symptoms in healthy adults. It is important to have early notification  
of a potential hazard, while still having the ability to react in time. In  
many reported cases of CO exposure, victims may be aware that  
they were not feeling well, but became disoriented and could no  
longer react well enough to exit the building or get help.  
NOTE: Healthy adults may not experience any symptoms of CO  
exposure when the device alarms, however infants, young children,  
pregnant women, elderly people, people with cardiac, respiratory or  
other health related issues may be more quickly and severely  
affected by CO exposure. If you are experiencing even mild  
symptoms of CO poisoning, consult a medical professional  
immediately.  
Audible Alarm: 85dBA minimum at 10 feet (3 meters).  
TO RETURN A CO ALARM  
Should you experience problems with your CO alarm,  
proceed as follows:  
1. Turn off electrical power to the CO alarm.  
2. Twist the CO alarm counter-clockwise to remove it from its  
mounting plate.  
3. Unplug the connector from the back of the CO alarm. Do not  
remove the wire connection; leave the connector for your  
replacement CO alarm.  
4. Remove battery from CO alarm. Do not ship CO alarm  
with battery still in battery drawer.  
Standards: Underwriters Laboratories, Inc. Single and Multiple  
Station carbon monoxide alarms UL 2034. For your information, the  
UL 2034 Standard, reads as follows:  
5. Carefully pack (the manufacturer cannot be responsible for  
consequential damage) and return to the manufacturer. Include  
complete details as to exact nature of difficulties being  
experienced and date of installation.  
Underwriters Laboratories, Inc UL 2034, 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, abnor-  
mal operation from 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.  
6. Return to: Gentex Corporation, 10985 Chicago Drive, Zeeland,  
Michigan 49464. Prior to returning, call Gentex at 800-436-8391  
or e-mail [email protected] to obtain a RMA Number from  
our return department.  
LIMITED WARRANTY  
For a period of 12 months from the date of purchase, or a maximum of 18 months from the date of manufacture,  
Gentex warrants to you, the original consumer purchaser, that your CO Alarm will be free from defects in  
workmanship, materials, and construction under normal use and service. The CO sensor has a limited warranty  
period of 5 years from date of installation. If a defect in workmanship, materials, or construction should cause  
your CO Alarm to become inoperable within the warranty period, Gentex will repair your CO Alarm or furnish you  
with a new or rebuilt replacement CO Alarm without charge to you except for postage required to return the CO  
Alarm to us. Your repaired or replacement CO Alarm will be returned to you free of charge and it will be covered  
under this warranty for the balance of the warranty period.  
This warranty is void if our inspection of your CO Alarm shows that the damage or failure was caused by  
abuse, misuse, abnormal usage, faulty installation, improper maintenance, or repairs other than those performed  
by us.  
ANY WARRANTIES IMPLIED UNDER ANY STATE LAW, INCLUDING IMPLIED WARRANTIES OF  
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, APPLY ONLY FOR THE  
WARRANTY PERIOD SPECIFIED ABOVE. PLEASE NOTE THAT SOME STATES DO NOT ALLOW  
LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE EXCLUSION MAY NOT  
APPLY TO YOU.  
GENTEX WILL NOT BE LIABLE FOR ANY LOSS, DAMAGE, INCIDENTAL OR CONSEQUENTIAL  
DAMAGES OF ANY KIND ARISING IN CONNECTION WITH THE SALE, USE, OR REPAIR OF THIS CO  
ALARM. PLEASE NOTE THAT SOME STATES DO NOT ALLOW THE EXCLUSION OR  
LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES. SO THE ABOVE EXCLUSION MAY NOT  
APPLY TO YOU.  
If a defect in workmanship, materials, or construction should cause your CO Alarm to become  
inoperable within the warranty period, you must return the CO Alarm to Gentex postage prepaid. You must also  
pack the CO Alarm to minimize the risk of it being damaged in transit. You must also enclose a return address.  
CO Alarms returned for warranty service should be sent to: Gentex Corporation, 10985 Chicago Drive, Zeeland,  
MI 49464.  
If we receive a CO Alarm in a damaged condition as the result of shipping, we will notify you and you must  
file a claim with the Shipper.  
THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS. YOU MAY ALSO HAVE OTHER  
RIGHTS WHICH VARY FROM STATE TO STATE.  
Important Notice:  
These materials have been prepared by Gentex Corporation ("Gentex") for informational purposes only, are necessarily summary, and are not purported to serve as legal advice and should not be used as such. Gentex makes no rep-  
resentations and warranties, express or implied, that these materials are complete and accurate, up-to-date, or in compliance with all relevant local, state and federal laws, regulations and rules. The materials do not address all legal  
considerations as there is inevitable uncertainty regarding interpretation of laws, regulations and rules and the application of such laws, regulations and rules to particular fact patterns. Each person's activities can differently affect the  
obligations that exist under applicable laws, regulations or rules. Therefore, these materials should be used only for informational purposes and should not be used as a substitute for seeking professional legal advice. Gentex will not  
be responsible for any action or failure to act in reliance upon the information contained in this material.  
GENTEX CORPORATION  
550-0498-A  
08-01-08  
Pg. C-8  
10985 CHICAGO DRIVE, ZEELAND, MI 49464  
PHONE: 1-800-436-8391  
 

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