Lantley wrote:
Since hot water can freeze faster than cold I think you maybe going down the wrong road.
While the water in the pipes may freeze as long as the tank remains in motion the chances of it freezing are reduced.
HOt water looses heat faster than cold water , because it has heat to loose
this is one of those 'phrases' that is always miss-stated and miss-interperted
it will NOT freeze UP, before an equal size tank of cold water does
it has too loose all that heat before it can began to get cold
he might be talking about an enclosed sealed water heating tube system
not feeding hot water into the fresh water tank ?
convection would keep it circulating, WH would not run constantly
or maybe use a small aquarium/fountain pump
certainly it can be done
my first class A, had a WH with pilot flame, i left it on pilot all the time, except for LP refills, it never blew out
