This question will be asked a dozen or more times as winter approaches. There are several sources of info:
RV Life has a generic but comprehensive article. See
https://www.doityourselfrv.com/how-to-winterize-an-rv/
Your owner's manual has a more specific but typically still generic writeup as it is written for all Thor Class As or Cs and is often out of date as new models and features are added.
An owner of the exact same coach can give you the specifics including info on where the freshwater tank drain valve and hot and cold low point drain valves are located as well as the antifreeze three way valve where you let the fresh water pump suck up antifreeze.
David
Linear Mode
