Hi Chris;
That's not for the eVault. Other Wrenches have mentioned using a pet
heating pad with a 120 vac plug in thermostat. I'm going to try that,
I'll report back to the list what I find.
Secondly, I am having issues figuring out how to do the closed loop
coms. The Fortress instructions contradict themselves on how to even
make up the proper CANbus cable, as apparently MODbus is not stable
anymore, after the latest Solark firmware upgrades. I'm about to just
apply the KISSbus, which is to blow off the closed loop com all
together, and /*K*eep *I*t *S*imple *S#@$%*/!, otherwise known as No
Coms at all.
I've screwed with Com stuff since the 90s, but usually been
disappointed, to downright horrified with the final results. Somebody
explain to me like a 2 year old again, why closed loop is so much
better? Think off grid, where reliability is 10 times more important
than squeezing an extra 5% capacity out of the battery.... Notes in the
online instructions such as "/Failure to properly upgrade the firmware
may cause the battery to stop working!", / are not making we want to
push ahead with closed loop either.
Ray
On 2/9/2023 11:01 AM, Chris Schaefer via RE-wrenches wrote:
Ray,
I'd suggest reaching out to the Fortress techie's as they just
introduced a heater product for their enclosure products. While I
don't believe they have a unit specif to the eVault but you should be
able to make it work.
Christopher
On Wed, Feb 8, 2023 at 6:43 PM Jerry Shafer via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote:
Pet heater have worked for me, I air gap a sealed heater box under
the battery, thermostat inside the top of the battery. It's slow
and low power but does the trick
Fun times
On Wed, Feb 8, 2023, 3:05 PM Ray Walters via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote:
Hi All;
I have a fresh Fortress Evault installation with a Solark
inverter. The
batteries are indoors in the center of the house, but the
customer is
not there full time, so the battery is unfortunately going below
freezing. What are the best options for setting up a heating
system for
the E Vault?
Here are ideas that I have not tried, but am considering:
1) add a 240 v, 1000 w baseboard heater in the room near the
battery
that is wired to only run off the generator. Run the
generator until
the heat comes up, and then hopefully after 30 minutes, the
battery
would begin accepting a charge.
2) Add an 120 vac heating blanket under the evault that would
be wired
to a thermostat, but also have a relay control from the PV
system, so
that the heater would only operate when the sun was out, and
the battery
was below 50F. I don't quite know how to set this up with
the Solark's
load controls.
I've considered some DC options, but they don't make much
sense, since
the inverter has to be on to charge from PV anyway.
The long term plan is for the client to finish the insulation,
and sheet
rock, and add a gas wall heater in there as needed.
Thanks,
Ray Walters
Remote Solar
in the Colorado mountain cold.....
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