sam2010 发表于 2016-5-31 11:28 6 R. \5 N8 `$ q2 ]! v$ [$ v' i. Pit depends on the capacity of the furnace. 5 ~& l4 k" N+ x: fa 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? " N, K6 e: u! U, i, I7 \" C3 `