Heating ducts

[sixkilo]

I am trying to figure out the heat vents in our 2002 minnie winnie 430v. There is one floor vent in bedroom and one in bathroom. There is a third one next to rear dinning booth. There is a round directable vent in bottom of same booth which also houses a 16 x 8 vertical return grate.There is another directable vent at stairwell. Here's the deal. Gas furnace blows heat out bedroom,bathroom and stairwell. Nothing out of either booth vents. I thought that floor vent might be either heat pump or chassis. Looking at heating pdf for that model does not detail. Any ideas? Thanks

[Murf2u]

They run flexible duct hose, crushed, pinched or disconnected hoses are pretty common.