What should the combustion co and excess air reading be for 80,000 btu 92% propane efficient furnace of Bryant 340MAV?Post created: 2013-02-15 Type of Equipment: Furnace Views: 10This question was created on the page: http://www.furnacecompare.com/furnaces/bryant/340mav.html. What should the combustion co and excess air reading be for this furnace be. Your Answer |