Alde valve?

[To4Travel]

I have a 2016 CS Adventuress. There is a valve under the right front seat which I believe has something to do with the Alde system. Does anyone know what this valve might be for? Should the valve normally be open or closed? All comments will be appreciated. Thank you.

 

[Nodnod]

I believe that valve shuts off engine coolant to the small heat exchanger under the seat. Ours is on all the time.

 

[To4Travel]

I believe that valve shuts off engine coolant to the small heat exchanger under the seat. Ours is on all the time.

Does the metal box enclosing the heat exchanger under the seat get hot during normal operation?