I spoke with the dealer and they told me that I would need to undo the screws for the cover inside the coach to access the hot water tank (for winterizing, the switch for the bypass on the tank). I found that another way of doing it, (easier for me, and less chance of messing up the screws), was to remove the drawer above the hot water tank. There are tabs in the track of the runner that either push up or down and make removal easy. On mine, the left side tab goes down, and the right side goes up, while facing the drawer. Not a very technical tip, but I hope it helps someone.