Thanks, Bill. Do you have any fairly close connection to anyone who has used HotSpot's equipment, tech support etc? I've put in perhaps a dozen Fujitsu minisplit's as an alternative to trying to find small efficient furnaces.and mostly in the early installs mistakes were made by HVAC techs who didn't want to take the time to make sure there were no refrigerant leaks under very high pressure. They've otherwise been very good. Tech support.mixed bag.
The heat recovery focus of HotSpot looks very promising. Again thanks Bill Dorsett Manhattan, KS From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Bill Loesch Sent: Thursday, March 10, 2016 4:12 AM To: RE-wrenches Subject: Re: [RE-wrenches] PV-direct air heating? Dan & Bill, If mini-split equipment is what you are using/considering you might want to look further at www.hotspotenergy.com John Williams who runs the place was at the AHR show in Orlando earlier this year and has DC and solar HVAC equipment. Hope it helps, Bill Loesch Solar 1 - Saint Louis Solar 314 631 1094 On 3/9/2016 9:40 PM, William Dorsett wrote: 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. Bill Dorsett Manhattan, KS From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dan Fink Sent: Wednesday, March 09, 2016 8:07 PM To: RE-wrenches Subject: [RE-wrenches] PV-direct air heating? I have an interesting question I haven't run into before, using existing equipment, some in place, some just waiting for an install. Has anyone here ever done an MPPT PV-direct install to DC air heaters? 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. 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? This one's new to me; I've never tried PV direct heating before. Thanks in advance for any input. Dan Fink Adjunct Professor of Solar Energy Technology, Ecotech Institute IREC Certified InstructorT for: ~ PV Installation Professional ~ Small Wind Installer Executive Director, Buckville Energy NABCEP Registered Continuing Education ProvidersT <tel:970.672.4342> 970.672.4342 _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai gn=sig-email&utm_content=emailclient&utm_term=oa-2115-d> This email is safe. <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai gn=sig-email&utm_content=emailclient&utm_term=oa-2115-d> www.avast.com
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