![]() other equipment that produces CO, such as a car idling in a garage attached to the home.ĬO alarms only indicate the presence of CO gas at the sensor the actual concentration of CO in the room may be different.extended operation of flueless gas appliances.simultaneous operation of several gas appliances without also increasing the ventilation.negative pressure differentials within a room, resulting from the use of exhaust fans.heavy air in the flue (such as cold or humid air).excessive spillage or reverse flueing of gas appliances caused by:.Be aware that CO alarm performance can be affected by: They do not detect smoke, fire, or other types of gas. are pre-calibrated and do not require maintenance other than to clean the outside case occasionally and ensure the holes on the front of the unit are kept clear.ĬO alarms only detect CO gas.sometimes provide a visual and audible warning when the electrochemical sensing cell has expired (which is the ideal type), while others may only provide a use-by date.have a limited life span of around 2 to 7 years, but their life expectancy and effectiveness will vary depending on their environment (and the relative heat, humidity, and dust), battery condition, and the level of exposure to CO.This is partly due to the nature of CO gas, which is slightly lighter than air, allowing air currents to affect a room’s CO concentration. (Your CO alarm’s instruction sheet should provide triggering times and CO concentrations, which will vary.) The proximity of the alarm in relation to a gas appliance will also influence when it triggers an alarm. They are designed to trigger at certain CO concentrations and time periods. The appliance is not installed in an adequately ventilated area.Įlectrochemical sensor CO alarms, where a chemical reaction with CO gas creates an electrical current that sets off an alarm, are the most common type of CO alarm available.A flue is partially or totally blocked.An appliance is faulty or poorly maintained.Under normal operating conditions, well maintained and correctly ventilated gas appliances produce minimal CO, but high CO levels can occur if one or more of the following conditions exist: ![]() What is CO?ĬO is a poisonous, colourless and odourless gas that interferes with the blood’s ability to carry oxygen. CO alarms can be a useful back-up precaution but should not be considered a substitute for the proper installation and regular maintenance of gas appliances, every two years. This gas information sheet provides information about electrochemical sensor carbon monoxide (CO) alarms and how to use them. ![]()
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