The wall in the storage area is very easy to remove with just a few screws holding it in place. Once you pop that carpeted wall out, you have clear access to the water heater, pump and all of the water piping and valves behind the control center. Maybe the 360 is a little different, but they appear to be setup the same as my 315. I don't recall seeing any other valves that could be shutoff. With the way they slap these things together, it wouldn't surprise me if they didn't even plumb the cold side. Most likely it is just the cheap cheesy fixture that they use. Mine has only been used a handful of times and the cold valve will leak a little bit in certain positions. Luckily it only leaks on the outside.