sam2010 发表于 2016-5-31 11:28# |( U6 v; C3 l& v. W2 f
it depends on the capacity of the furnace. i, n: W' s2 x% ^( F# g3 m2 `5 _2 pa furnace with 3000 cfm blower, 100mbh or above gas inpu ...
/ {/ l. }, s0 N9 a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? & z- D* D6 e. K4 r1 A# e9 t, `