Gentex CO1209 SERIES User manual

ELECTROCHEMICAL TYPE SINGLE/MULTIPLE STATION
CARBON MONOXIDE ALARM, AC POWERED, WITH BATTERY BAC -UP
& TANDEM WIRE CONNECTION
Installation Instructions - Owner's/User’s Information Manual -READ CAREFULLY AND SAVE
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.
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.
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.
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.
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.
MODELS
(SEE BACK OF CO ALARM FOR EXACT MODEL)
CO1209..........................120VAC, 60Hz
CO1209F........................120VAC, 60Hz with Form A/Form C auxilary
relay contact
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 WOR S
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
CO1209 SERIES
ELECTROCHEMICAL CARBON
MONOXIDE (CO) ALARM
quiet the alarm horn. If critical levels of CO remain, the alarm will
re-activate and sound.
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 OPERATIN
PROPERLY for more information.
HOW TO TELL IF THE CO ALARM IS WOR ING
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.
WHAT YOU CAN DO TO MA E YOUR FAMILY SAFE
FROM CARBON MONOXIDE (CO)
a. Install CO alarms properly following the instructions in
this manual. eep 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.
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.
Hold CO drills at least every 6 months to make sure that
everyone, even small children, know what to do to escape
safely.
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:
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.
c. et 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. ive 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.
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

that are capable of assisting others to provide
assistance to those who may not be awakened by
the alarm sound, or to those who may be incapable
of safely evacuating the area unassisted.
WHAT THIS CO ALARM CAN DO
This CO alarm is designed to sense carbon monoxide gas
entering its sensing element. It does not sense smoke, heat or
flames.
When properly located, installed, and maintained, this CO alarm
is designed to provide early warning of potential increased levels of
carbon monoxide gas at a reasonable cost. This device monitors
the air and when it senses CO, activates its built-in alarm horn. It
can provide precious time for you and your family to escape from
your residence before a CO poisoning occurs. Such an early
warning, however, is possible only if the CO alarm is located,
installed, and maintained as specified in this User's Manual.
This CO alarm is designed for use within single residential living
units only; that is, it should be used inside a single-family home or
one apartment of a multi-family building. In a multi-family building,
the device may not provide early warning for residents if it is placed
outside of the residential units, such as on outside porches, in
corridors, lobbies, basements, or in other apartments. In multi-family
buildings, each residential unit should have CO alarms to alert the
residents of that unit. Devices designed to be interconnected should
be interconnected within one family residence only; otherwise,
nuisance alarms will occur when a CO alarm in another living unit is
tested.
NOTICE: GENERAL LIMITATIONS OF CO ALARMS
This CO alarm is intended for all dwelling units. 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. A battery must be
connected to the CO alarm to maintain proper device operation if AC
power supply is cut off by an electrical fire, an open fuse or
circuit breaker, or for any other reason. In the event of AC power
failure, the battery will supply power for a minimum of 24 hours.
CO alarms may not awaken all individuals. If children and
others do not readily awaken 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 for solar or wind energy users and battery
back-up 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 alarm. For this reason, if
sleeping room doors are usually closed at night, we recommend you
install an alarm in each sleeping room and in the hallway of each
sleeping area.
CO alarms may not sense CO on another level of the
residence. For example, an alarm on the second floor, near the
bedrooms may not sense CO in the basement. For complete
coverage, it is recommended that an alarm be installed on each level
and tandem interconnected.
CO alarms may not be heard. The alarm decibel rating meets
or exceeds current UL Standards of 85dBA at 10 feet (3 meters).
However if the device is installed outside the sleeping area, it may
not awaken a sound sleeper, one who has recently used drugs or
has been drinking alcoholic beverages. This is especially true if the
door is closed or only partially open. Even persons who are awake
may not hear the sounding alarm 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 device is not intended for people who
are hearing impaired.
CO alarms are not a substitute for life insurance. Though
these CO alarms warn against increasing CO levels, entex
Corporation does not warrant or imply in any way that they will
protect lives from CO poisoning. Homeowners and renters must still
insure their lives.
550-0498
Pg. C-2
CO alarms have a limited life. Although the CO alarm and all of
its components 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 electrical 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
alarm. CO alarms may not alarm when a large influx of CO is
introduced into the house. An example of a possible source of a
large in-rush of CO is a generator running in an attached, enclosed
garage and the door to the connected residence is opened.
NOTICE: The horn in your CO alarm meets or exceeds current
audibility requirements of Underwriters Laboratories. However, if the
CO alarm is located outside a bedroom, it may not wake up a
sound sleeper, especially if the bedroom door is closed or only
partly open. If the CO alarm is located on a different level of the
residence than the bedroom, it is even less likely to awaken people
sleeping in the bedroom. In such cases, the National Fire Protection
Association recommends that the CO alarms be interconnected so
that a unit on any level of the residence will sound an alarm loud
enough to awaken sleepers in closed bedrooms. This can be done
by employing a systematic approach by interconnecting CO alarms
together, or by using radio frequency transmitters and receivers.
WHAT YOU NEED TO NOW
ABOUT CO
WHAT IS CO? Carbon Monoxide (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.
SYMPTOMS OF CO POISONING: These symptoms are related to
CO POISONIN and should be discussed with ALL household
members.
Some individuals are more sensitive to CO than
others, including people with cardiac, respiratory or other
health problems, infants, young children, pregnant women and
elderly people can be more quickly and severely affected by
CO. People sensitive to CO should consult their doctors for
advice on taking additional precautions.
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. A few
factors that can make it difficult to locate sources of CO include:
House well ventilated before the investigator arrives.
Problem caused by “backdrafting”.
Transient CO problem caused by special circumstances.
Because CO may dissipate by the time an investigator arrives, it
may be difficult to locate the source of CO. Gentex Corporation
shall not be obligated to pay for any carbon monoxide (CO)
investigation or service call.
HOW CAN I PROTECT MY FAMILY?
A CO alarm is an excellent way of protection. It monitors the air
and sounds a loud alarm before carbon monoxide (CO) levels
become threatening for average, healthy adults.
NOTICE: A CO alarm is not a substitute for proper maintenance
of home appliances.
EXPOSURE SYMPTOMS OF CO POISONING
Mild Slight headache, nausea, vomiting, fatigue
(flu-like symptoms)
Medium Throbbing headache, drowsiness, confusion,
rapid heart rate
Extreme
Convulsions, unconsciousness, heart and lung
failure. Exposure to carbon monoxide (CO)
can cause brain damage and death

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.
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.
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.
550-0498
Pg. C-3
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.
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:
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.
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.
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.
Figure 1
Figure 1: POTENTIAL SOURCES OF CO IN HOME.
These conditions can come and go, they are also hard to recreate
during a CO investigation.
Figure 4: IN DWELLIN UNITS WITH MORE THAN ONE
SLEEPIN AREA, A CO ALARM MUST BE PROVIDED TO
PROTECT EACH SLEEPIN AREA.
Figure 3: A CO ALARM MUST BE LOCATED BETWEEN THE
SLEEPIN AREA AND THE REST OF THE DWELLIN UNIT.
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
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.
Figure 4
Figure 2: A CO ALARM MUST BE LOCATED ON EVERY LEVEL OF
DWELLIN UNIT, INCLUDIN BASEMENT AND OUTSIDE SLEEP-
IN AREAS.
Figure 2

550-0498
Pg. C-4
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 5: A CO ALARM MUST BE LOCATED ON EACH LEVEL.
Figure 5
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.
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.
Figure 6: RECOMMENDED CO ALARM MOUNTIN LOCATIONS
Figure 6
Figure 7: RECOMMENDED CO ALARM LOCATION IN ROOMS
WITH SLOPED, ABLED, OR PEAKED CEILIN S.
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 7
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.
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.
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.
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.
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.
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.
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.

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.
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.
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.
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 CONNECTIN ANOTHER CO ALARM,
SMOKE/CO ALARM OR SMOKE ALARM.
Figure 9
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.
Figure 10
LIMITATIONS:
Maximum of 12
CO alarms may be
connected
together. Do not
exceed 125 feet
between each CO
alarm. Do not
exceed 1125 feet
between the first
and last CO alarm.
NOTES ON TANDEM INTERCONNECTIN MODELS
DO NOT connect entex CO alarms to other manufacturers'
CO alarms.
No more than 12 entex 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.
After installation, to verify proper working conditions, all horns must
sound in this system.
When tandem interconnecting CO1209 Series to additional
CO1209 Series, N-503 Series or N-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
entex legacy products. Legacy products include 9120/9123
Series, 7100/7103 Series, 710CS/713CS Series, 7109CS/7139CS
Series, N-200/ N-203 Series and N-300/ N-303 Series.
Use brown/yellow wire to tandem interconnect CO1209 Series
alarms to additional CO1209 Series alarms, N-403 Series and
N-503 Series.
If the red/yellow wire is used to interconnect the N-503 Series to
additional N-503 Series, N-400/ N-403 Series and CO1209
Series, the units will not be tandem inteconnected. The brown/
yellow wire MUST be used.
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 entex 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.
Figure 11
RED-YELLOW OR
BROWN-YELLOW WIRE
UNINSULATED WIRE
EARTH ROUND -
FOR METAL BOXES
ONLY
3-WIRE CABLE
AND ROUND
120VAC
BLACK
WHITE
RED-YELLOW
BROWN-YELLOW WIRE
UNINSULATED WIRE
EARTH ROUND -
FOR METAL BOXES
ONLY
4-WIRE CABLE
AND ROUND
120VAC
BLACK
WHITE
550-0498
Pg. C-5

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.
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 12
Figure 13
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.
NOTE: Remove dust-cover before operating CO alarm
PUSH BUTTON
FOR SELF TEST.
PUSH BUTTON
AND HOLD UNTIL
DEVICE ALARMS
FOR
FUNCTIONAL
TEST
POWER ON
INDICATOR
Figure 14
550-0498
Pg. C-6
CO INDICATOR
5. Press and release button for self test feature. Results of test:
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.
3 Chirps - CO Alarm is at end of life and must be replaced.
CHEC OUT & 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.
b. Check that the battery is installed.
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.
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!
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:
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
cause system malfunction and damage to the alarm.
BATTERY INSTALLATION
1. Locate side mounted battery drawer.
2. Open battery drawer by firmly pulling on side lip, then sliding
battery drawer open.
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.
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:
NOTICE!
“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!
NOTICE: Alarms have various limitations. See “General
Limitations of CO Alarms” for details.

550-0498
Pg. C-7
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.
While the alarm is silenced:
If the CO alarm: This means:
Is silent for only 5 minutes, CO levels are still
then the alarm sounds again potentially dangerous
If the CO alarm: This means:
Remains silent after the test CO levels are dropping
button has been pressed
MAINTENANCE
DO NOT open CO alarm for cleaning. IF CO ALARM IS
OPENED, PRODUCT WARRANTY BECOMES VOID.
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.
entex 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.
WEE LY 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.
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.”
DO NOT stand close to the device when the alarm is
sounding. Exposure at close range could result in hearing
damage.
Never use exhaust from vehicle to test CO portion of alarm.
Exhaust may cause permanent damage to alarm and voids the
warranty.
TO EEP THE ALARM WOR ING 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.
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.
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.
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).
UL 2034 Required Alarm Points1:
If the CO alarm is exposed to 400ppm of CO, THE DEVICE MUST
ALARM BETWEEN 4 - 15 MINUTES.
If the CO alarm is exposed to 150 ppm of CO, THE DEVICE
MUST ALARM BETWEEN 10 - 50 MINUTES.
If the CO alarm is exposed to 70 ppm of CO, THE DEVICE MUST
ALARM BETWEEN 60 - 240 MINUTES.
The device is designed not to alarm when exposed to a constant
level of 30 ppm for 30 days.
TROUBLESHOOTING GUIDE
PROBLEM: THIS MEANS: ACTION TA EN:
CO alarm goes back
into alarm 5 minutes
after the reset button
was pressed.
CO levels indicate
a potentially
dangerous situation.
IF YOU ARE
FEELIN
SYMPTOMS OF CO
POISONIN ,
EVACUATE your home
and call 911 or the Fire
Department. If not,
press the reset button
again and keep
ventilating your
home.
reen light is OFF. Red
light is not flashing.
Unit will not go into test
mode when test button
is pressed.
Device may not be
receiving power.
NO AC and no
battery in device.
Contact licensed
electrical technician for
equipment inspection
service, immediately.
Alarm sounds 2 quick
chirps every 30
seconds.
Device has become
dirty or defective or
large influx of CO
(over 1,000 ppm).
Clean (refer to
Maintenance Section)
or warranty return.
Alarm sounds 3 quick
chirps every 30
seconds.
END OF LIFE
SIGNAL. Device
needs to be
replaced.
Contact entex
Corporation for
replacement
information.
reen light is ON and
red light is not flashing
and Alarm chirps once
every 30 seconds
Low or no battery in
device
AC is powering
device
Replace battery (refer
to Battery Installation
Section) or return to
manufacturer
Reset button is
pressed. LED’s do not
flash and device does
not go into test mode.
Device is not
operating properly.
Contact entex
Corporation for
replacement
information.
Any questions that are not answered within this manual, call entex
Corporation at 1-800-436-8391.
1Approximately 10% COHb exposure at levels of 10% to 95%
Relative Humidity (RH).
USING THE RESET FEATURE
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.
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.

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.
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.
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.
6. Return to: entex Corporation, 10985 Chicago Drive, Zeeland,
Michigan 49464. Prior to returning, call entex at 800-436-8391
or e-mail [email protected] to obtain a RMA Number from
our return department.
Pg. C-8
LIMITED WARRANTY
For a period of 12 months from the date of purchase, or a maximum of 18 months from the date of manufacture,
entex 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, entex 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, INCLUDIN 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 LON AN IMPLIED WARRANTY LASTS, SO THE ABOVE EXCLUSION MAY NOT
APPLY TO YOU.
ENTEX WILL NOT BE LIABLE FOR ANY LOSS, DAMA E, INCIDENTAL OR CONSEQUENTIAL
DAMA ES OF ANY KIND ARISIN 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 DAMA ES. 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 entex 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: entex 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 IVES YOU SPECIFIC LE AL RI HTS. YOU MAY ALSO HAVE OTHER
RI HTS WHICH VARY FROM STATE TO STATE.
ENTEX CORPORATION
10985 CHICA O DRIVE, ZEELAND, MI 49464
PHONE: [phone]
www.gentex.com
550-0498-A 08-01-08
Important Notice:
These materials have been prepared by entex Corporation (" entex") for informational purposes only, are necessarily summary, and are not purported to serve as legal advice and should not be used as such. entex 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. entex will not
be responsible for any action or failure to act in reliance upon the information contained in this material.
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.
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.
Standards: Underwriters Laboratories, Inc. Single and Multiple
Station carbon monoxide alarms UL 2034. For your information, the
UL 2034 Standard, reads as follows:
Underwriters Laboratories, Inc UL 2034, Section 1-1.2 Carbon
monoxide alarms covered by these requirements are intended to
res ond to the resence of carbon monoxide from sources such as,
but not limited to, exhaust from internal-combustion engines, abnor-
mal o eration from fuel-fired a liances and fire laces. 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 ex osure.