<div dir="ltr"><div>I have multiple ElSid pumps in my heating system which have been running for just about 15 years without the slightest hitch. At 10W each they are hard to beat, but they do need DC so a power supply is needed. I ran them off 24VDC direct from the battery for the first 10 years and from a small MeanWell power supply for the last 5 years. My only complaint is that when there are 4 of them running it sounds like a miniature WWII bomber. No loud enough to hear outside of the utility room but something to keep in mind.</div><div><br></div><div>Brad Bassett</div><div>AEE Solar<br></div><div><br></div><div>Brad<br></div></div><br><div class="gmail_quote"><div dir="ltr">On Fri, Sep 7, 2018 at 7:33 AM Drake <<a href="mailto:drake.chamberlin@redwoodalliance.org">drake.chamberlin@redwoodalliance.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
Dana, <br><br>
Your comments, and other comments on this list have made me see the
light. We are going to go with a boiler. <br><br>
What is the best source of equipment for this application these days?
<br><br>
Many years ago, I helped install a system in Colorado using El Sid pumps,
with guidance from you, if you recall this ancient history. <br><br>
Cheers,<br><br>
Drake <br><br>
<a name="m_-8249959848673430069__MailAutoSig"></a>Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
740-448-7328<br>
</i><a href="http://athens-electric.com/" target="_blank">http://athens-electric.com/</a>
<br><br>
<br>
At 07:43 PM 8/23/2018, you wrote:<br>
<blockquote type="cite" class="m_-8249959848673430069cite">Content-Type:
multipart/alternative;<br>
<u></u> <u></u>
boundary="----=_NextPart_000_0068_01D43B08.DFB2A130"<br>
Content-Language: en-us<br><br>
Drake,<br>
All the conventional units I have amp clamped over the years are pushing
900-900+ watts per hour. I do not recommend them ever & to date I
have never found a lower wattage blower. I would assume that a permanent
magnet motor would fit this suggestion, but I have not found one.<br>
For off grid I recommend: Radiant floor heat first and hot water base
board second long before hot air. Air is a better insulator than a heat
transfer agent.<br>
The new ECM (electronically commutated motors) pump motors are basically
at DC permanent magnet motor power draws [Taco & Grundfoss] these
days.<br>
<br>
Best of luck with this one.<br>
<br>
----------------------------------------------------------------------------<br>
Dana
Orzel
Great Solar Works, Inc. <br>
<b>C -
208.721.7003
<a href="mailto:dana@solarwork.com" target="_blank">dana@solarwork.com</a><br>
</b>Idaho Contractor - #
028765 Idaho PV #
028374<br>
NABCEP #
051112-136
<a href="http://www.solarwork.biz" target="_blank">www.solarwork.biz</a><br>
<u>"Responsible Technologies for Responsible People since
1988" <br>
</u><b>P</b> Please consider the environment before printing this
email.<br>
<br>
<br>
<b>From:</b> RE-wrenches
<<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>> <b>On Behalf Of
</b>Drake<br>
<b>Sent:</b> Thursday, August 23, 2018 2:37 PM<br>
<b>To:</b> RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>><br>
<b>Subject:</b> [RE-wrenches] Forced air Furnace<br>
<br>
<dl>
<dd>Hello Wrenches,<br><br>
<dd>What is the best choice for a propane, forced air furnace for an off
grid house? We would prefer one that doesn't have a phantom load,
although the transformer for the thermostat may not be avoidable. Low
blower current would be preferable. The furnace AC will be powered by a
Magnum 4448 PAE.<br><br>
<dd>Thank you,<br><br>
<dd>Drake <br><br>
<dd>Drake Chamberlin<br>
<dd>Athens Electric LLC<br>
<dd>OH License 44810<br>
<dd>CO License 3773<br>
<dd>NABCEP Certified Solar PV <br>
<dd>740-448-7328<br>
<dd><a href="http://athens-electric.com/" target="_blank">http://athens-electric.com/</a>
<br><br>
</dd></dd></dd></dd></dd></dd></dd></dd></dd></dd></dd></dl> <br>
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