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Dan & Bill,<br>
If mini-split equipment is what you are using/considering you might
want to look further at <br>
<br>
<a class="moz-txt-link-abbreviated" href="http://www.hotspotenergy.com">www.hotspotenergy.com</a><br>
<br>
John Williams who runs the place was at the AHR show in Orlando
earlier this year and has DC and solar HVAC equipment.<br>
Hope it helps,<br>
<pre class="moz-signature" cols="72">Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094</pre>
<div class="moz-cite-prefix">On 3/9/2016 9:40 PM, William Dorsett
wrote:<br>
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<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Dan,
I think it is Gree that has a PV direct mini-split heat pump
for both heating and air conditioning. It may have run on
two 250 watt modules. When in non-PV mode, I believe the AC
is rectified to DC and run through an inverter. And there
are now a few others as well….possibly Fujitsu.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Bill
Dorsett<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Manhattan,
KS<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
RE-wrenches
[<a class="moz-txt-link-freetext" href="mailto:re-wrenches-bounces@lists.re-wrenches.org">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On
Behalf Of </b>Dan Fink<br>
<b>Sent:</b> Wednesday, March 09, 2016 8:07 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> [RE-wrenches] PV-direct air heating?<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">I have an interesting question I haven't
run into before, using existing equipment, some in place,
some just waiting for an install.<o:p></o:p></p>
<div>
<p class="MsoNormal">Has anyone here ever done an MPPT
PV-direct install to DC air heaters? <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Advanced Energy used to have a
PV-direct MPPT water heating controller, but the
residential division of their company no longer exists. We
are looking at 1200-1500 watts of PV.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">How would one program a Midnite Classic
(for example) to most efficiently connect PV to DC heating
elements without a battery bank/diversion load setup,
whether for water or air?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">This one's new to me; I've never tried
PV direct heating before.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Thanks in advance for any input.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
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<div>
<p class="MsoNormal"><span
style="font-size:9.5pt">Dan Fink</span><o:p></o:p></p>
<div>
<p class="MsoNormal"><span
style="font-size:9.5pt">Adjunct
Professor of Solar Energy
Technology, Ecotech Institute<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.5pt">IREC
Certified Instructor™ for: <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.5pt">~ PV
Installation Professional<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.5pt">~
Small Wind Installer<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.5pt">Executive
Director, Buckville Energy<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.5pt">NABCEP
Registered Continuing
Education Providers™<br>
<a moz-do-not-send="true"
href="tel:970.672.4342"
target="_blank"><span
style="color:#1155CC">970.672.4342</span></a><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><br>
<o:p></o:p></p>
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