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Smoke Alarm
WHERE NOT TO INSTALL SMOKE ALARMS
Nuisance alarms take place when smoke detectors are installed where they will not work properly. To
avoid nuisance alarms, do not install smoke detectors in the following situations:
►Combustion particles are the by-products of something that is burning. Thus, in or near areas where
combustion particles are present you do not install the smoke detectors to avoid nuisance alarms, such as
kitchens with few windows or poor ventilation, garages where there may be vehicle exhaust, near furnaces, hot
water heaters, and space heaters.
►Do not install smoke detectors less than 20 feet (6 meters) away from places where combustion particles are
normally present, like kitchens. If a 20-foot distance is not possible,e.g. in a mobile home, try to install the
detector as far away from the combustion particles as possible. To prevent nuisance alarm alarms, provide good
ventilation in such places.
►In damp or very humid areas, or near bathrooms with showers. Moisture in humid air can enter the sensing
chamber, then turns into droplets upon cooling, which can cause nuisance alarms. Install smoke detectors at
least 10 feet (3 meters) away from bathrooms.
►In very cold or very hot areas, including unheated buildings or outdoor rooms. If the temperature goes above
or below the operating range of smoke detector, it will not work properly. The temperature range for your smoke
detector is 40 oF to 100 oF (4 oC to 38 oC).
►In very dusty or dirty areas, dirt and dust can build up on the detector’s sensing chamber, to make it overly
sensitive. Additionally, dust or dirt can block openings to the sensing chamber and keep the detector from
sensing smoke.
►Near fresh air vents or very drafty areas like air conditioners, heaters or fans, fresh air vents and drafts can
drive smoke away from smoke detectors.
►Dead air spaces are often at the top of a peaked roof, or in the corners between ceilings and walls. Dead air
may prevent smoke from reaching a detector.
►In insect-infested areas. If insects enter a detector’s sensing chamber, they may cause a nuisance alarm.
Where bugs are a problem, get rid of them before putting up a detector.
►Near fluorescent lights, electrical “noise” from fluorescent lights may cause nuisance alarms. Install smoke
detectors at least 5 feet (1.5 meters) from such lights.
Figure 4
Figure 3
0.9M(3ft)
horizontal distance from peak
detector
WALL
best location
acceptable location
50CM(20'')
MINIMUM
never here
CEILING
certer of ceiling
►If some of your rooms have sloped, peaked, or gabled ceilings, try to mount detectors 3 feet (0.9 meter)
measured horizontally from the highest point of the ceiling as shown in Figure 4.
WARNING: Never remove batteries to stop a nuisance alarm. Open a window or fan the air around the detector
to get rid of the smoke. The alarm will turn itself off when the smoke is gone. If nuisance alarms persist, attempt
to clean the detector as described in this User’s Manual.
WARNING: Do not stand close to the detector when the alarm is sounding. The alarm is loud in order to wake you
in an emergency. Too much exposure to the horn at close range may be harmful to your hearing.
