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<DIV><FONT face=Arial color=#000000 size=2>Hi Todd,</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>Congrats on the off-grid solar
application to improve quality of life.</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>I will defer to my more learned
colleagues re the optimum water pressure pump.</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>If you don't want to use any
electricity to create the hot water, then you want to use a <STRONG>natural
draft</STRONG> tankless. (Like a conventional tank, no electricity required.)
Please be aware of the minimum flow requirements to turn on the tankless -
something on the order of a half gallon per minute. Less flow than that and the
tankless will not fire. If you can find any, the (out of production)
piloted Paloma PH series (some folks have said it resembles
R2D2) would work on much lower water pressure than the Bosch series which
work reliably only with a minimum of 30 psi (e.g. the lower limit of your pump
switch would be set to 31 psi or more).</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>The hydro generated Bosch model
sounds great in principle and were able to provide you a tax credit in
the previous tax credit program . What is required for the hydro
generated models to work (in addition to the hydro generator) is an
expensive electronics box and a multitude of
connectors which IMHO are not up to the rigors that the piloted
models offer, especially in less than pristine environments. The piloted models
utilize a thermocouple which most everyone is familiar with and has many fewer
connectors. Most all the natural draft piloted tankless machines
incorporate a piezo igniter like on your BBQ grill, so turning off the pilot
manually and relighting as required is nowhere near the contortionist effort
experienced with a tank and provides the savings of no pilot gas usage when
not working.</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>Good luck,</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>Bill Loesch<BR>Solar 1 - Saint Louis
Solar<BR></FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=toddcory@finestplanet.com
href="mailto:toddcory@finestplanet.com">Todd Cory</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, November 13, 2008 7:58
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [RE-wrenches] tankless hot water
and pumping question</DIV>
<DIV><BR></DIV><FONT size=+1><FONT face=Arial>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. <BR><BR>I need recommendations
for:<BR><BR>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.<BR><BR>as well as <BR><BR>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.<BR><BR>Thanks,<BR><BR>Todd<BR></FONT></FONT>
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<DIV class=Section1>
<H2><SPAN style="FONT-SIZE: 9pt">Todd Cory<O:P></O:P></SPAN></H2>
<H2><SPAN style="FONT-SIZE: 9pt">KE6SXS<O:P></O:P></SPAN></H2>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 9pt; COLOR: rgb(0,116,0); FONT-FAMILY: 'Comic Sans MS'"><A
href="mailto:toddcory@finestplanet.com"><SPAN
style="FONT-WEIGHT: normal; FONT-FAMILY: 'Times New Roman'">toddcory@finestplanet.com</SPAN></A><O:P></O:P></SPAN></B></P>
<H2><SPAN style="FONT-SIZE: 9pt">Mt. Shasta Energy
Services<O:P></O:P></SPAN></H2>
<H1><SPAN style="FONT-SIZE: 9pt; COLOR: rgb(0,116,0)">License C-10<SPAN>
</SPAN>#811428<O:P></O:P></SPAN></H1>
<H1><SPAN style="FONT-SIZE: 9pt; COLOR: rgb(0,116,0)">P.O. Box
689<O:P></O:P></SPAN></H1>
<H1><SPAN style="FONT-SIZE: 9pt; COLOR: rgb(0,116,0)">Mt. Shasta, CA.
96067<O:P></O:P></SPAN></H1>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 9pt; COLOR: rgb(0,116,0); FONT-FAMILY: 'Comic Sans MS'">(530)
926-1079<O:P></O:P></SPAN></B></P>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 9pt; COLOR: rgb(0,116,0); FONT-FAMILY: 'Comic Sans MS'"><!--[if
!supportEmptyParas]--> <!--[endif]--><O:P></O:P></SPAN></B></P><PRE><SPAN style="FONT-SIZE: 8pt; COLOR: rgb(153,51,0); FONT-FAMILY: 'Comic Sans MS'">“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." <O:P></O:P></SPAN></PRE>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 8pt; COLOR: rgb(153,51,0); FONT-FAMILY: 'Comic Sans MS'">∞
Thomas Edison, in conversation with Henry Ford and Harvey Firestone, March
1931</SPAN><B><SPAN
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