profdant139 wrote:
tpi, if you can figure out how to do that, I am very interested!! Not sure how the plumbing would run to and from the fresh tank and the hot tank.
Simple.
In my trailer, the galley sink is above the water pump. It is also the last fixture in line for hot water but that is not important for your application. I also have a small pressure tank (folks here call them accumulators) on the water line which helps what I did below work even better.
I Teed a solenoid valve into the hot water line under the galley sink and ran the outlet down to the water line between the freshwater tank and the pump (could have also ran it into the water tank vent line if I didn't have the pressure tank). Valve opens, and water runs back into the tank. Then the pump turns on and brings that water right back into the water system. In my case, the valve is controlled by a temperature monitoring and timer circuit, but you could easily just occasionally turn it on and off via a pushbutton switch.
A handy mod for reducing freeze potential, providing instant hot water, and for saving water.
