sam2010 发表于 2016-5-31 11:28/ ]8 f! ]0 Z3 d" D5 R; U% C
it depends on the capacity of the furnace. 9 R% z3 I7 C6 K. C+ ~; s3 b" pa furnace with 3000 cfm blower, 100mbh or above gas inpu ...
% J0 O( S# r/ X3 t. D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?; a5 u# x' y* P0 ?7 p) R