[RE-wrenches] EG4 Mini Split

[Dave Angelini Offgrid Solar]

The EG4 is not a bad split. Reason my client wanted it was a redundant 
cooling back-up if his battery/inverter/solar went down.

Definitely run AC to it from the main system. Getting close to the 
solstice and solar can power this well into the evening😎

Dave Angelini Offgrid Solar
"we go where powerlines don't"
    [2]https://offgridsolar1.com/ [3]  [2]
e-mail  offgridsolar at sti.net
text 209 813 0060

On 2025-06-19 10:53 am, William Miller via RE-wrenches wrote:

> There are two reasons I could see:
> 
> ·        Your existing PV rating is too small.
> 
> ·        You do not have any existing PV and you do not want to incur 
> more utility expenses.
> 
> I do see a real limitation to direct-DC air conditioning (which I think 
> is what we are discussing):  No AC when the sun is not high in the sky. 
>  That alone makes this impractical
> 
> William
> 
> Miller Solar
> 
> 17395 Oak Road, Atascadero, CA 93422
> 
> 805-438-5600
> 
> www.millersolar.com [1]
> 
> CA Lic. 773985
> 
> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On 
> Behalf Of Jason Szumlanski via RE-wrenches
> Sent: Thursday, June 19, 2025 10:25 AM
> To: RE-wrenches
> Cc: Jason Szumlanski
> Subject: Re: [RE-wrenches] EG4 Mini Split
> 
> I guess the secondary question is why would anyone use this system 
> anyway in a grid interconnected environment. The only rationale I could 
> see is to have some level of air conditioning when the sun is shining 
> without having to go through the expense of adding a hybrid inverter 
> and batteries. But by the time you install solar panels with a rapid 
> shutdown system, the return on that investment seems terrible 
> considering that much of the solar energy generated will be wasted 
> unless you somehow need maximum cooling from this unit 365 days a year 
> during the daylight hours.
> 
> 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, Jun 19, 2025, 6:15 AM Jason Szumlanski 
> <jason at floridasolardesigngroup.com> wrote:
> 
>> I'm getting requests to install 4-6 panels for these mini-splits. I'm 
>> saying no so far, but it got me thinking... What are people doing for 
>> rapid shutdown for these systems? I can't see them being exempt. The 
>> manual is silent on the issue. It just shows a DC isolator from the 
>> panels to the point of connection in the unit.
>> 
>> Jason Szumlanski
>> 
>> Florida Solar Design Group
> 
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Links:
------
[1] http://www.millersolar.com/
[2] http://members.sti.net/offgridsolar/
[3] https://offgridsolar1.com/
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