Hi Chris, All the aux relays are voltage controlled so not sure what setting you would use to activate the fan? I would assume you are trying to turn the fan on based on high temperature in an enclosure or something so battery voltage wouldn’t be a good indicator. We have military and vehicle applications that use +12 or 24v to the fan via an adjustable t-stat. Check Grainger under HVAC t-stats, this one is around $25
Gary [Adjustable Fan Switch,90-130]<http://www.grainger.com/product/Adjustable-Fan-Switch-6UEE1?s_pp=false&picUrl=//static.grainger.com/rp/s/is/image/Grainger/6UEE1_AS01?$smthumb$> CompareView Compare · GRAINGER APPROVED VENDOR · Adjustable <http://www.grainger.com/product/Adjustable-Fan-Switch-6UEE1?s_pp=false&picUrl=//static.grainger.com/rp/s/is/image/Grainger/6UEE1_AS01?$smthumb$> From: RE-wrenches [mailto:[email protected]] On Behalf Of Mac Lewis Sent: Wednesday, January 07, 2015 2:26 PM To: RE-wrenches Subject: Re: [RE-wrenches] 24V Zephyr Vent Fan from a Magnum MS4024PAE inverter Hi Chris, If you have a Magnum router in this system, you do have access to an aux contact otherwise you'll need an external relay. Good luck On Wed, Jan 7, 2015 at 1:56 PM, Ray Walters <[email protected]<mailto:[email protected]>> wrote: The Magnums do not have relays available like the old SWs, but you can run a Zephyr directly from either a Outback FM controller or a Midnite Classic. Both have a controlled 200 mA, 12 output. I've had occasional trouble running the Zephyr because as weird as this sounds: the fan can have a start up surge that exceeds 200 mA. Its like sizing a water pump for mice.....you still have to look at the locked rotor current and surge current. With the Midnite Classic, it will just shut off the 12 v output if it exceeds 200 mA, and it doesn't seem to have an error message or warning. You could also use a Simple Switch, or other voltage controlled switching device (C40, Tristar, Solar Converters, etc) R.Ray Walters CTO, Solarray, Inc Nabcep Certified PV Installer, Licensed Master Electrician Solar Design Engineer 303 505-8760<tel:303%20505-8760> On 1/7/2015 8:45 AM, Chris Daum wrote: Dear folks: Has anyone hooked up a battery vent fan, being turned on and off using just a Magnum MS4024PAE inverter? Is there some AUX output that can be used? Thanks as always for your help! Chris Daum Oasis Montana Inc. 406-777-4309<tel:406-777-4309> www.oasismontana.com<http://www.oasismontana.com> _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected]<mailto:[email protected]> Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm<http://www.re-wrenches.org/etiquette.htm> Check out or update participant bios: www.members.re-wrenches.org<http://www.members.re-wrenches.org> _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected]<mailto:[email protected]> Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm<http://www.re-wrenches.org/etiquette.htm> Check out or update participant bios: www.members.re-wrenches.org<http://www.members.re-wrenches.org> -- Mac Lewis "Yo solo sé que no sé nada." -Sócrates
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