[RE-wrenches] tankless hot water and pumping question

[robert ellison]

Todd,
I have had good luck with systems like this using a Shurflo 120 volt pump
3.3 GPM but the 24 volt is simular. If you feed them from a standing tank
they seem to pump well over spec and hang around for a long time. Run the
output to as big a pressure tank as you can get. The larger the better, in
some instances i have used a pair of 80 gallon tanks. Long draw time between
having to rely on just the pumps output.

The heater you re thinking of is the Aquastar hydro. 120HX I think. Works
well with the above combination just feed it with 3/4 water lines in and out
and put at least 6' of flue pipe on it. Make sure you oversize the gas line
also.

Later,
Bob

On Thu, Nov 13, 2008 at 8:58 PM, Todd Cory <toddcory at finestplanet.com>wrote:

> I am working on a semi-volunteer job for a local non-profit. It is off grid
> with water being trucked in and stored in a ground level polyethylene tank.
>
> I need recommendations for:
>
> 1) A 24 volt DC pressure pump. This is a single residence so can be
> relatively low volume as it will only feed a shower or sink... no
> irrigation.
>
> as well as
>
> 2) Which tankless (propane) hot water heater would be best? I think there
> is one that uses the water flow to spin a tiny generator that ignites the
> burner. Being off grid it is important to not have a unit that draws power
> 24/7.
>
> Thanks,
>
> Todd
> --
>  Todd Cory KE6SXS
>
> *toddcory at finestplanet.com*
> Mt. Shasta Energy Services License C-10  #811428 P.O. Box 689 Mt. Shasta,
> CA. 96067
>
> *(530) 926-1079*
>
> * *
>
> "I'd put my money on solar energy...I hope we don't have to wait till oil and coal run out before we tackle that."
>
> ∞ Thomas Edison, in conversation with Henry Ford and Harvey Firestone,
> March 1931**
>
>
>
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