Tankless Water Heater as Heat Source

[lrrowe]

Len,
I was not suggesting that one use the Tow Vehicle's engine water system. All I was saying is that a particular Atwood heater has a separate set of plumbing in it that yes, was probably designed for Motor Homes but could be used in "reverse" to maybe allow for the use of a "radiator" type of heat system in the CT. Reference this discussion starting with your post above on 1/15.
Bob

[piperpilot3tk]

Bob, I see your point now! Sounds like a good idea!

[len19070]

Len,
I was not suggesting that one use the Tow Vehicle's engine water system.
Bob

I know Bob, just trying to snip a few questions about it maybe further down the line.

Happy Trails

Len

[Engineer Guy]

Back when I designed our Solar Retirement House, I looked at the possibility of using a Demand Heater for Radiant Floor Heating. The Solar Folks back then recommended against it. I would suggest that Folks here look at the fine print to avoid 'gotchas'.

One detail I recall was that Demand Heaters are for heating relatively-cold Water. Running warm/hot Water into them caused Controls and premature Heater failure. This is why, back then, Manufacturers voided the Warranty if used for the application being discussed here. I'm not saying this is still the case; that's where reviewing the Manufacturer's fine print is useful.

Perhaps the input of warm Water caused the internal Water Temp Gauge to work 'too hard'? I recall that cycling on and off stressed Components, and pushed the Heater beyond the duty cycles/day it was meant to work at in an average Home application. Perhaps these issues have been solved.

I passed, based on what I read.