sam2010 发表于 2016-5-31 11:28! e: C+ {7 X; \7 N; u5 M$ v
it depends on the capacity of the furnace.3 Z6 h/ z. H6 ?) D; q
a furnace with 3000 cfm blower, 100mbh or above gas inpu ...
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谢楼上的专业解答,你说的跟cmf blower跟那个什么BTU有什么关系吗?& s x) F. S; O" J9 v, H8 T0 g; I3 P