<div>I wonder if a work around might be to run the igniter off a relay activated by the original board and fed by the inverter direct?</div>
<div> </div>
<div>I have seen things not start when the charger was drawing off the generator, not Magnums but old Hearts.</div>
<div> </div>
<div>Bob<br><br></div>
<div class="gmail_quote">On Mon, Feb 9, 2009 at 1:16 PM, Allan Sindelar <span dir="ltr"><<a href="mailto:allan@positiveenergysolar.com">allan@positiveenergysolar.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>
<p><font face="Times New Roman">Wrenches,</font> <br><font face="Times New Roman">We have an unusual problem, and I need to know if anyone else has had this or a related problem, and what to do about it.</font></p>
<p><font face="Times New Roman">This concerns a new off-grid residential system, very conventional: 1,800W PV, Midnite E-Panel with Magnum MS4448-AE inverter, MX60, 16 S-460s, installed summer 2008. This existing home is being extensively remodeled, and the home is not yet occupied. A local mechanical contractor installed a new infloor radiant (gypcrete) hydronic heating system using a Netherlands-made (German company) Buderus GB142 high-efficiency boiler. The problem is that the boiler won't start reliably on the inverter. It appears that the hot-surface igniter does not get full AC voltage (it runs on straight 120V AC, but is supplied through the boiler's control circuitry). We tested the igniter by disconnecting it and plugging it straight into inverter AC and it lit right up. </font></p>
<p><font face="Times New Roman">The mechanical contractor has tried a replacement Buderus GB142 boiler with the same result. I was told that they brought out a generator and it also failed to ignite on generator AC, but not knowing the generator used or the way it was wired (I believe an extension cord to a portable) I don't put much weight on this data. They also took a Lochinvar Boiler to the site to test the theory that a different manufacturer's boiler might work. The Lochinvar boiler, which uses a different control and a spark ignition rather than a hot surface igniter, worked on site without any problems.</font></p>
<p><font face="Times New Roman">I'm looking for solutions. Magnum tech support had not heard of this. Have you? </font><br><font face="Times New Roman">Also, if indeed we have an inverter that is incapable of running this load, how do we make it right to the homeowner and the mechanical contractor? What should be Magnum's obligation? What should be ours? This issue hasn't come up here since the days when the Trace SW mod-sine series was the waveform standard.</font></p>
<p><font face="Times New Roman">Thanks,</font> <br><font color="#888888"><font face="g">Allan Sindelar</font> <br><a href="mailto:allan@positiveenergysolar.com" target="_blank"><u></u><u><font face="g" color="#0000ff" size="2">allan_(at)_positiveenergysolar.com</font></u></a> <br>
<font face="g" size="2">NABCEP certified solar PV installer</font> <br><font face="g" size="2">Positive Energy, Inc.</font> <br><font face="g" size="2">3225A Richards Lane</font> <br><font face="g" size="2">Santa Fe NM 87507</font> <br>
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