[RE-wrenches] need to set up an older generac remote start circuit

[Jason Szumlanski]

I'm pretty sure this is just a utility sense generator based on the
picture. If you interrupt 240V power to N1 and N2, the generator should
start if it is in auto mode. You could install a relay in that N1/N2
circuit that opens when the AGS start logic is met.

I'm not sure how the battery charger works on that unit, so you might need
to investigate that.


Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
Florida Certified Electrical Contractor EC13013208


On Thu, Oct 2, 2025 at 12:23 PM Kirk Herander via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hello folks,
>
> This Generac belongs to an old customer. He picked it up used. Runs good,
> but apparently was used w/ an ATS, which is no longer present.
> No doc's, no labels to identify model.
>
> But I have set up a remote start in a similar model 20+ years ago.w/o the
> ATS, just can't remember how. Terminals 23 & 194 connect to the ATS
> contactor coil to change state when it starts, I just can't remember the
> *easy* way to initiate the start command itself. There don't appear to be
> additional terminals for a dedicated start signal.
>
> The red and black wires come from inverter AC to keep battery trickle
> charger energized, etc. I wonder if simulating loss of this AC, with genny
> control switch in auto mode, would initiate the run cycle.
>
> In the meantime, any insights from my fellow old-timers (new ones welcome,
> too)? Thanks.
>
> [image: image.png]
>
> I've worked on this mo
>
> --
>
>
> *Kirk Herander / **kirkh at vermont.solar <kirkh at vermont.solar>*
>
> *Owner|Principal, VT Solar, LLC*
>
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>
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>
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