Add a mini split

[Chicat]

In our off grid home I am upgrading my old Xantrex SW4024 inverter and was wondering if I could use it to power a 24K BTU mini split with a Victron Transformer, 800 AH of battery, and 2000 watts of PV. The mini split would only be needed during the day for cooling. Looking at a Mr Cool 24K diy unit using 22 to 35 amps.

Any help or suggestions would be greatly appreciated

 

[740GLE]

So you want to step up 120 to 240 to supply the 24k mini split?

800ah at 24v? LiFePo i take it?

What is your current daily KWhr usage? Vs production?

I’d say it’s def doable as long as you monitor usage and SOC with a shunt so not to draw the battery to zero before turning off the mini split.

 

[Chicat]

The mini split will be the only draw on the above system, it runs at 11 amps but peaks at 19 amps, it will only run during the day and I average 1800 watts for 5.5 hours input during the day at this time of year

 

[740GLE]

19a at 240v is 4560w, your xantrex is a 4000VA inverter, plus the losses of the xfrmr of stepping 120v to 240v, you prob have a usable 3500VA

It can prob run the 24k mini split at a lower setting but not a full tilt, so what’s the point of sizing a system than can only be run on low?

I’d look for a 12k mini split and run it off 120v and avoid the step up transformer losses.

 

[Chicat]

Thank you for the input

 

[onokai]

I have 3c mr cools-two 18k and a 12k. The 12 k is 120V the 18k are 240V. That 24 k is to big for your setup in my view-upsize your inverter or downsize your mini split. You are going to want that Mr cool on higher settings in the summer