How do I have hot water?

bobkatmsu wrote:

dougrainer wrote:
I just checked Newmar's archives. They list ONLY a Standard 10 gallon water heater or the upgrade optional Oasis type LP powered System hydronic zoned system.
So, that points to one of the problems with forums. The OP has just purchased a 8 year old Motorhome and has questions. BUT, he has no way of knowing what the previous owner/s did to that coach. They may have added a Tankless system and wired it in such a way that it does indeed stay on when he thinks he has turned it off. When he checks, he will post the Brand and hopefully model of his Tankless system. We can then give him more accurate info. Doug

After reading your post I checked my Newgle account and again agree with you, a tankless water heater was not an option in 2010. The previous owner must have installed this to replace the 10 gallon water heater.
I was at my mh this morning and found that the manufacturer is Precision Temp, the model is a Twin Temp Jr. Hydronic Heating/Water Heater. I could not get to the model number. Thanks for all your help.

OK, don't need model number, your model is what you stated. Now, I went to precision temps website and the install/operation instructions are HORRIBLE. They list NO remote On/Off panel. They seem to indicate that the system switch is ON the unit itself. Now, Adding a Hydronic system is NOT easy or inexpensive. So, if you do indeed have the COMPLETE Hydronic HEATING and Water Heater system, you got a good deal on your used motorhome. They may have installed just the Water Heater part. Now, the odds are it had the standard OLD OEM water heater switch for turning on the LP or 120 system. THAT wall switch would not really work for the Twin Temp. So, if you turned the OEM Water Heater switches OFF, but did not turn the Twin Temp OFF at the Twin Temp unit, that would be why you had Hot water after a week. Do you have a Precision temp inside remote switch? Do you have the Hydronic radiators for Furnace heating? Doug