Fridge on Propane

Not sure I am following your thought but will give it a try.  Your fridge operates 3 ways as you are probably well aware of.  Battery, 110 electric, and propane.  Water has nothing to do with the operation of your fridge.  On our 177 there is a button on the front of the fridge you press until the propane symbol lights up.  You will need either 110 or battery to operate your fridge on propane.  Don't make the mistake like I did when I first had my pod of operating your fridge on battery alone.  My battery was dead after about 10 hours. 

One other thing to make a mental note of before heading out with the pod.  The night before you leave turn the fridge on, we use the extension cord and plug in 110, so the fridge can cool down before you load it up the following day.  Depending on outside temps it can take anywhere from 6 to 12 hours to cool down properly unless you are camping in real cold weather. 

Charlie, you are probably correct with the 24 hour to cool properly in warmer climates.  I was going by my experience as a northerner where I start the fridge when it is around 65 degrees or less and the fact that when I start it is in the shade, not in sun.  Seeing you are from FL the time to properly cool will be greatly extended.

I understand that a fan in the refrigerator to circulate the air will help speed cooling. We bought a small blue cube-shaped fan that takes two D cells. The batteries are supposed to last for weeks. It does not move much air, but it is sufficient. We used it on our last trip, and it seemed to work well.