<div dir="ltr">Louis; I have seen that pilot light save off-grid on-demand water heaters from freezing many times! <div><br></div><div>Often old technology has advantages that don't make it into new, high-tech equipment press releases.</div><div><br><div> Since I work so far off grid and only with small systems, the newer water heaters needing 120VAC supply don't let inverters go into Search Mode when the residents are away for days, weeks or months. I know Search Mode is a relic from a decade ago when PV was expensive, but smaller systems still rely on it. </div><div><br></div><div>Best regards;<br><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><span style="font-size:12.8000001907349px">Dan Fink</span><div style="font-size:12.8000001907349px">Adjunct Professor, Ecotech Institute</div><div style="font-size:12.8000001907349px">IREC Certified Instructor\u2122 for: </div><div style="font-size:12.8000001907349px">~ PV Installation Professional</div><div style="font-size:12.8000001907349px">~ Small Wind Installer</div><div style="font-size:12.8000001907349px">Executive Director, Buckville Energy</div><div style="font-size:12.8000001907349px">NABCEP / IREC / ISPQ Accredited Continuing Education Providers\u2122<br><a href="tel:970.672.4342" value="+19706724342" style="color:rgb(17,85,204)" target="_blank">970.672.4342</a></div><br> </div></div></div></div></div></div>
<br><div class="gmail_quote">On Fri, Sep 11, 2015 at 11:20 AM, <span dir="ltr"><<a href="mailto:louis@solarcowboyz.com" target="_blank">louis@solarcowboyz.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><span style="font-family:Verdana;color:#000000;font-size:10pt"><div>Hello Rebekah,</div><div><br></div><div>I have had no luck in getting the older style without AC required either.</div><div>I agree that these newer devices that require AC are better performers.</div><div><br></div><div>Some of these(most ?) have a built in anti-freeze protection scheeme.</div><div>It is made from a ceramic heating element(HI-WATT RES.) that will come on at a default internal temp.(typ=36 to 38deg F).</div><div>When this antifreeze circuit turns ON there is around 100 to 200W(I would have to go measure to be sure) of power consumed.</div><div>When installed in cold climates this circuit will be used.</div><div><br></div><div>On the older non-ac units the standing pilot light can protect against some freezing;However I would not count on this alone in cold climates.</div><div><br></div><div>This is something to be aware of.</div><div>Hope this helps.</div><div><br></div><div>Louis Segarra</div><div><br></div>
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