[mtlakejim]

Our 2018 High Country has two drain valves that pass thru the underbelly. They are black. One drains the fresh water tank and the other is the low point drain for the icemaker line.


To fully drain the plumbing you have to open both those valves, open the hot and cold water drain lines in the water utility area and pull the cathode plug on the hot water tank.
Like Whiterose said draining the lines alone will NOT protect you from freezing. There are several good threads on here about winterizing your rig though....