SunDanzer Question [RE-wrenches]

[Allan Sindelar]

Wrenches:
We have a longstanding customer with a 24V offgrid home system. He is adding
a Sundanzer 5.8 cubic foot 24V DC chest freezer to his home. We will locate
it in a cool north porch for minimal power consumption. The porch is
directly above a pit containing his 24V Booster Pump and pressure tank, and
I'd like to use the same DC circuit, rather than running new conduit and
wires.

My plan is to use a 24V coil relay in the pump pit. Normally closed contacts
would send power to the freezer, since it has both lower draw and longer
runtime. The pressure switch would activate the relay coil to disconnect
power to the freezer when there is a call for water. It looks like the
freezer draws about 1.6-3.2A, and the pump 8-10A. I don't remember the
conductor size, but it was sufficient for the application when installed.

Anyone tried this? Any problems with this approach? Is it overkill?
Sundanzer specs indicate minimum 22.8 V for the 24V models, but I don't know
if this is a hard number.

Thanks for any responses.

Allan at PosE


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