Allergo heat ducts

[Jamesds]

I have a 1999 Allegro Bus by Tiffin, Can any one tell me how many and where the heat outlets from the front furnace are? Front furnace runs good but I only find 2 - 2" dia out lets at floor level, one on each side of TV. There are 2 - 4" dia ducts coming off the back of the furnace, seems like there should be more outlets in the cabin area. ???

[BFlinn181]

Those ducts might be diverted into your wet bay to keep plumbing and tanks from freezing. Try turning on the furnace fan only and start exploring for the noise and breeze.