Kidde KN-COU-B - Manual (Page 7)

1. Information About Carbon Monoxide
(cont.)
Mid Levels:
Generally between 50 PPM to 100 PPM. This should be cause for con-
cern and should not be ignored or dismissed. See “What to do When
the Monitor Sounds” (inside front cover).
Low Levels:
Generally between 20 and 50 PPM. Kidde recommends you take
action to eliminate the source of CO. See “What to do When the
Monitor Sounds” (inside front cover).
Background Levels:
Generally below 20 PPM. Kidde recommends you take action to elimi-
nate the source of CO and consult with your healthcare provider to
determine the impact of long term exposure to these concentrations
on your health. See “What to do When you hear the warning” (inside
front cover).
Possible Sources of Carbon Monoxide
Inside your home, appliances used for heating and cooking are the most
likely sources of CO. Vehicles running in attached garages can also
produce dangerous levels of CO.
CO can be produced when burning any fossil fuel, such as gasoline,
propane, natural gas, oil and wood. It can be produced by any fuel-
burning appliance that is malfunctioning, improperly installed, or not
ventilated correctly, such as:
• Automobiles, furnaces, gas ranges/stoves, gas clothes dryers, water
heaters, portable fuel burning space heaters and generators,
fireplaces, wood-burning stoves and certain swimming pool heaters.
• Blocked chimneys or flues, back drafts and changes in air pressure,
corroded or disconnected vent pipes, loose or cracked furnace
exchangers.
• Vehicles and other combustion engines running in an open or closed
garage, attached or near a home.
• Burning charcoal or fuel in grills and hibachis in an enclosed area.
Hazardous Conditions that can Produce Carbon Monoxide
The following conditions can result in transient CO situations:
• Excessive spillage or reverse venting of fuel-burning appliances caused
by outdoor ambient conditions, such as, wind direction and/or velocity,
including high gusts of wind, heavy air in the vent pipes (cold/humid
air with extended periods between cycles).
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