Hydronic and Espar Heat
Last year we modified our Winnebago View to be able to use the motorhome (full water, showers, dump tanks, without Propane) throughout the Wisconsin winters. I thought I'd share the writeup that I di...
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Today I installed an Automatic Digital Temperature Controller for the water heater(http://www.ebay.com/itm/160816907893?var=460077054980&ssPageName=STRK:MEWNX:IT). We always have the desire to know the water temp in the water heater, but even more so with the Motoraide connection.
I installed the display on the "control wall" with the other lights/switches and ran the probe (extended it) to inside the styrofoam jacket around the waterheater. I then wired the Propane waterheater switch and the Espar pre-heat mod into the control unit.
Now, we can set the waterheater temp at the desired temp and the controller will turn off the propane or Espar when it reaches that temp. The real goal with this addition was to ensure that the water temperature is set for use to heat the coach and keep the lines from freezing.
I turned on the 110v waterheat switch and the water temp maxed out at 140 degrees. I then cooled down the water in the waterheater and ran the Espar pre-heat for about 4 hours. With the Espar it maxed out at 122 degrees (outside temp in the 50's).
Now, we can heat the coach with the Espar and have it controlled with the thermostat. Plus the waterheater controller will control the Espar to keep the water heated for use in heating the coach via the heat exchangers. The waterheater heat options are Electric, Gas, or Espar with switches that allow one or all to be on at the same time.
Now waiting for the Cozy III heat exchangers to install and the RedyTemp circulating pump.
I installed the display on the "control wall" with the other lights/switches and ran the probe (extended it) to inside the styrofoam jacket around the waterheater. I then wired the Propane waterheater switch and the Espar pre-heat mod into the control unit.
Now, we can set the waterheater temp at the desired temp and the controller will turn off the propane or Espar when it reaches that temp. The real goal with this addition was to ensure that the water temperature is set for use to heat the coach and keep the lines from freezing.
I turned on the 110v waterheat switch and the water temp maxed out at 140 degrees. I then cooled down the water in the waterheater and ran the Espar pre-heat for about 4 hours. With the Espar it maxed out at 122 degrees (outside temp in the 50's).
Now, we can heat the coach with the Espar and have it controlled with the thermostat. Plus the waterheater controller will control the Espar to keep the water heated for use in heating the coach via the heat exchangers. The waterheater heat options are Electric, Gas, or Espar with switches that allow one or all to be on at the same time.
Now waiting for the Cozy III heat exchangers to install and the RedyTemp circulating pump.
