Kelly, I too have been told of this new revision to NFPA-54 Chapter 10 (10.8.3)
It has been in effect since the end of July, I've been told.
It pertains to direct vent appliances, mechanical-vent heating appliances or domestic hot water equipment , where the bottom of the vent terminal is installed below four feet above grade.
There is more to the amendment and I did a search but came up with nothing?
I'll try to get more info tomorrow...
Also there is Nicole's Law under the making which will require a CO detector in all public housing units by Jan 1st 2007.
In memory of Nicole Garofalo, who died in her Plymouth home this past winter when a snow drift blocked the vent for the furnace...
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