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?
I have seen things not start when the charger was drawing off the generator, not Magnums but old Hearts. Bob On Mon, Feb 9, 2009 at 1:16 PM, Allan Sindelar < [email protected]> wrote: > Wrenches, > 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. > > 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. > > 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. > > I'm looking for solutions. Magnum tech support had not heard of this. Have > you? > 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. > > Thanks, > Allan Sindelar > ***allan_(at)_positiveenergysolar.com* <[email protected]> > NABCEP certified solar PV installer > Positive Energy, Inc. > 3225A Richards Lane > Santa Fe NM 87507 > 505 424-1112 > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > >
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