An inverter only cares about the voltage of your bank, not the Ah or the number of batteries that comprise the bank. As long as they're all in parallel, you can hook it up to as many batteries as you want.
You should not connect more than 3 batterys with 220Ah. The reason is the maximum charging current of 70A. If you connect more batterys the charging current is to low to change the batterys correct.
I initially posted something like this, I don't know if the OP is referring to an inverter or an inverter/charger...
