Unsuitable Locations
Do not place the CO alarm in any of the following areas.
In the immediate vicinity of a cooking appliance (keep it at least 3 ft (1 m) horizontally from it).
Outside the building.
In an enclosed space (e.g. in or below a cupboard).
In a damp or humid area or directly above a sink, stovetop or oven.
Next to a door, window, air vent or anywhere that it could be affected by draughts.
Next to a ceiling or exhaust fan or air conditioning vents.
Over heat sources such as radiators or heating vents.
Where it would be obstructed, e.g. by curtains or furniture.
In an area where the temperature could drop below 32°F (0°C) or rise above 104°F (40°C).
Where dirt or dust could block the sensor.
Where it could be easily knocked, damaged or accidentally turned off or removed.
In a bathroom or other areas where the CO alarm may be exposed to water splashes, drip-
ping or condensation.
Near paint, thinners, solvent fumes or air fresheners.
A room with a fuel burning appliance, see Figure 1
If it is mounted on a wall, it should be located at a height greater than the height of any door
or window but still be at least 0.5 ft (150 mm) from the ceiling.
If it is mounted on the ceiling it should be at least 1 ft (300 mm) from any wall or light fixture.
The CO alarm should be a horizontal distance of between 5 – 10 ft (1.5 – 3 m) from the
potential CO source.
If there is a partition in the room, the CO alarm should be located on the same side of the
partition as the potential source of carbon monoxide.
In rooms with sloped ceilings and fuel burning appliances, the CO alarm should be located
at the high side of the room, see
Figure 2
.
9
10
1ft, 150 mm
1ft, 300mm
CO alarm
CO alarm
5–10ft
1–3m
Dead air,
don’t locate
here
Figure 1
Room with a fuel
burning appliance
Figure 2
Rooms with sloped
ceilings
Figure 3
Bedrooms/rooms remote from source
1ft, 300mm CO alarm
CO alarm
3–6.5ft
1–2m
5–10ft
1–3m
