At the moment my AC photovoltaic system consists of an inverter fronius ig30 with 8 panels of 270W each (about 2100w) and an immersun box that makes a deviation from the excess that the house does not consume, for a hot water heater up to 3000W.
I'm going to install another 2200w in a MPPT for about 20kwh in 16 lithium 220AH (48v) cells that come on the way home. So I'll have more than 4000w in PV.
I am inclined to purchase a victron multiplus II (48v) and other necessary accessories (Venus ...)
I would like to keep my fronius, but I imagine you can not call it in order to make ac coupling because it is old.
Can I keep you connected in Auto Consumption with the immerssun to Grid parallel topology with PV inverter and MPPT solar charge controller , the divert the surplus to the AQS, since the multiplus can not inject more than 2400w in the house?
Any suggestion of configuration of my system I am immensely grateful.