ASTM E1998评定减压诱导的通风燃气用具回流和溢出的标准指南
日期:2012-02-08 10:23
ples of specific conditions under which such methods could be performed:
When debris or soot is evident at the draft hood, indicating that backdrafting may have occurred in the past,
When a new or replacement combustion appliance is added to a residence,
When a new or replacement exhaust device or system, such as a downdraft range exhaust fan, a fireplace, or a fan-powered radon mitigation system, is added,
When a residence is being remodeled or otherwise altered to increase energy efficiency, a
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