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DRAWING #2
DRAWING #2 shows the effect of a cold chimney. Cold air creates a reverse draft (negative
pressure), which causes smoking problems. This phenomenon is amplified by the fact that heat
rises, which creates a draft from the basement of the house to the upper floors (“chimney stack
effect”).
Summary of Contents for WHISTLER EPA EXEMPT
Page 16: ...16 MASONRY CHIMNEY Clay liner Thimble Clean out door ...
Page 17: ...17 FACTORY BUILT THIMBLE ...
Page 18: ...18 BRICK THIMBLE ...
