User Guide
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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.
Symptoms of CO Poisoning
Initial carbon monoxide poisoning symptoms are similar to the flu with no fever and can include dizziness, severe 
headaches, nausea, vomiting and disorientation. Everyone is susceptible but experts agree that unborn babies, preg-
nant women, senior citizens and people with heart or respiratory problems are especially vulnerable. If symptoms of 
carbon monoxide poisoning are experienced seek medical attention immediately. CO poisoning can be determined 
by a carboxyhemoglobin test.
The following symptoms are related to CARBON MONOXIDE POISONING and should be discussed with ALL 
members of the household:
1. MILD EXPOSURE: Slight headache, nausea, vomiting, fatigue (often described as “Flu-like” symptoms).
2. MEDIUM EXPOSURE: Severe throbbing headache, drowsiness, confusion, fast heart rate.
3. EXTREME EXPOSURE: Unconsciousness, convulsions, cardio respiratory failure and death.
The above levels of exposure relate to healthy adults. Levels differ for those at high risk. Exposure to high levels 
of carbon monoxide can be fatal or cause permanent damage and disabilities. Many cases of reported carbon 
monoxide poisoning indicate that while victims are aware they are not feeling well, they become so disoriented 
they are unable to save themselves by either exiting the building, or calling for assistance. Also, young children and 
household pets may be the first affected. Familiarization with the effects of each level is important.










