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Part One – Your Nighthawk CO Alarm
Do not install in excessively dusty, dirty or greasy areas such as
kitchens, garages and furnace rooms. Dust grease or household
chemicals can contaminate or coat the alarm’s sensor, causing the
alarm not to operate properly.
Do not obstruct the vents located at the top and bottom of the
alarm. Place the alarm where drapes, furniture or other objects do
not block the flow of air to the vents.
Do not install in dead air space, such as peaks of vaulted ceilings
or gabled roofs, where carbon monoxide may not reach the sen-
sor in time to provide early warning.
Do not install in turbulent air from ceiling fans. Do not install near
doors and windows that open to the outside, near fresh air vents,
or anywhere that is drafty. Rapid air circulation from fans or fresh
air from outside may cause the sensor to display an inaccurate
reading in the presence of CO.
Do not install this alarm in a switch- or dimmer-controlled outlet.
Do not install in areas where the temperature is colder than 40˚F
(4.4˚C) or hotter than 100˚F (37.8˚C). These areas include uncondi-
tioned crawl spaces, attics, porches and garages. Extreme tempera-
tures will affect the sensitivity of the alarm.
Do not install CO alarm near deep cell large batteries. Large bat-
teries have emissions that can cause the alarm to perform at less
than optimum performance.
Avoid the following:
• Excessive spillage or reverse venting of fuel burning
appliances caused by outdoor ambient conditions, such as:
1) Wind direction and/or velocity, including high gusts
of wind. Heavy air in the vent pipes (cold/humid air with
extended periods between cycles). 2) Negative pressure
differential resulting from the use of exhaust fans.
3) Simultaneous operation of several fuel burning appliances
competing for limited internal air. 4) Vent pipe connections
vibrating loose from clothes dryers, furnaces or water heaters.
5) Obstructions in or unconventional vent pipe designs which
can amplify the above situations.
• Extended operation of unvented fuel burning devices (range,
oven, fireplace, etc.).
• Temperature inversions which can trap exhaust gasses near
the ground.
• Car idling in an open or closed attached garage, or near
a home.
Where to Install Your CO Alarm
Your Nighthawk CO alarm should be mounted in or near bed-
rooms and living areas. It is recommended that you install a
Nighthawk CO alarm on each level of a multi-level home. You
may use the number and location of smoke alarms installed in
your home according to current building code requirements as a
guide to the location of your Nighthawk CO alarm(s).
WHEN CHOOSING YOUR INSTALLATION LOCATIONS,
MAKE SURE YOU CAN HEAR THE ALARM FROM ALL SLEEP-
ING AREAS. IF YOU INSTALL ONLY ONE CARBON MONOX-
IDE ALARM IN YOUR HOME, INSTALL THE ALARM NEAR
BEDROOMS, NOT IN THE BASEMENT OR FURNACE ROOM.
Two self-adhesive labels are included with the CO alarm. Add
the phone number of your emergency service provider in the
space provided. Place one label next to the alarm and one label
near a fresh air source such as a door or window
CAUTION: This alarm will only indicate the presence of carbon
monoxide at the sensor. Carbon monoxide may be present in
other areas.
IMPORTANT: Improper location can affect the sensitive elec-
tronic components in this alarm. Please see the next section
describing where NOT to install this alarm.
Where Not
to Install Your CO Alarm
To avoid causing damage to the unit, to provide optimum pro-
tection, and to prevent unnecessary alarms, follow the direc-
tions below where NOT to install this alarm:
It is not recommended that you install this CO alarm in garages,
kitchens or furnace rooms. Installation in these areas could lead to
nuisance alarms, may expose the sensor to substances that could
damage or contaminate it, or the alarm may not be heard by
persons in other areas of the home, especially if they are sleeping.
In the garage, vehicle exhaust can contain some carbon monox-
ide. These levels are higher when the engine is first started. Within
hours of starting a vehicle and backing it out of the garage, the lev-
els present over time can activate the alarm and become a nuisance.
In the kitchen and furnace room, some gas appliances can emit a
short burst of carbon monoxide upon start-up. This is normal. If
your CO alarm is mounted too close to these appliances, it may
alarm often and become a nuisance.
If you must install a Nighthawk CO alarm near a cooking or heat-
ing appliance, install
AT LEAST
15 feet away from appliance.
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810-1368 AC PP 12/99 8/24/00 2:06 PM Page 8