09 Ea30.5 heater ducts diagram

[Vossmia]

i had a possum under my rv. i looked under the underpinning and saw a 2'' flex duct off. i investigated more and found all the floor vents still attached but cannot find where the small one goes back on. anyone know where this would attach or does it just lay in the underpinning under the tank?

[Grumpy]

Usually that is just to heat the basement/under carriage. However on some units they also run a 2" to the bathroom floor vent if you have one.

[Vossmia]

ok thanks kinda figured this but wanted to get another opinion. all vents are attached in the bathrooms and floor vents
thanks again

[GHen]

A 2” might be a fresh air intake for the firebox in the furnace. Probably fine just hanging.

[Vossmia]

It’s hooked up to the heated lines not a fresh air line or input