Method for detecting venting of a combustion appliance within an improper space
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United States of America Patent
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Jun 26, 2001
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N/A
app pub date -
Jan 6, 1998
filing date -
Jan 6, 1998
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Expired
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Abstract
A method for detecting improper venting of a combustion appliance within an interior space relies upon a carbon dioxide detector to determine whether a preselected criterion indicative of improper venting is exceeded. The preselected criterion can be a threshold concentration of carbon dioxide or a threshold level of rate of rise of carbon dioxide concentration that is exceeded at a specified time or over a specified interval of time. The method can be used to detect leaks in a residential furnace, at very low levels, during start up of the furnace by measuring the preselected criterion in a heated air duct.
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