Heat Duct Routing 310RL

[Meanjean73]

I know where all my heat ducts go with the exception of one small duct. Heads to the back, goes down the frame rail on the driver side.

My thought was it heads to the back and keeps the water tank from freezing?

I see the ducts going to the kitchen island(2), bathroom, bedroom. Just can’t figure out what the last small one is going.

 

[BryanValRox]

I know where all my heat ducts go with the exception of one small duct. Heads to the back, goes down the frame rail on the driver side.

My thought was it heads to the back and keeps the water tank from freezing?

I see the ducts going to the kitchen island(2), bathroom, bedroom. Just can’t figure out what the last small one is going.

You are correct, it provides heat to the underbelly to help prevent tank freezing.

 

[Oregon_Camper]

You are correct, it provides heat to the underbelly to help prevent tank freezing.

...in addition to the 12v tank heaters.

 

[GaryG]

I have two 4" ducts that go down into the underbelly- is that solely for tank heat?

 

[GaryG]

 

[BryanValRox]

I believe that they feed you kitchen island ductwork.

 

[Socal-Paul]

I had two 4" ducts going into the underbelly one is now moved into the living area the other was left in place. I found in cold weather the underbelly was under pressure when the pass through door was opened and hot while the living area was cold.