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 [email protected]
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:[email protected]] 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
<[email protected]> 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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