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THE FOLLOWING CONDITIONS CAN RESULT IN TRANSIENT CO SITUATIONS:
Excessive spillage or reverse venting of fuel-burning appliances caused by:
(1) outdoor ambient conditions, such as wind direction and/or velocity, including high gusts of
wind, and insufficient draft in the vent pipes;
(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) loose vent pipe connections from fuel-fired appliances;
(5) obstructions, or unconventional vent pipe designs that can amplify the above situations;
(6) poorly designed or maintained chimneys and/or vents;
(7) extended operation of unvented fuel-burning devices (range, oven, fireplace, etc);
(8) temperature inversions that can trap exhaust gases near the ground;
(9) car idling in an open or closed attached garage, or near a home.
CO SAFETY TIPS
Every year, have the heating system, vents, chimney and flue inspected and cleaned by a
qualified technician. Always install appliances according to manufacturer’s instructions and
adhere to local building codes. Most appliances should be installed by professionals and
inspected after installation. Regularly examine vents and chimneys for improper connections,
visible rust, or stains, and check for cracks in furnace heat exchangers. Verify that the color of
flame is blue on pilot lights and burners. An amber or orange flame is a sign that the fuel is not
burning completely and may be releasing CO.
Teach all household members what the alarm sounds like and how to respond. Fire Departments,
most utility companies and HVAC contractors will perform CO inspections. Some contractors may
charge for this service. It’s advisable to inquire about any applicable fees prior to having the service
performed. Kidde will not pay for, or reimburse the owner or user of this product, for any repair or
dispatch calls related to the alarm sounding.
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