Phoenix Inverter 12/3000-230V VE.Bus AC push back on output

Quick question, I know some where on the forum the guys talked about that you can push back AC on the output of the Phoenix inverter to charge the battery. “I think it’s Phil that is doing this” I bought this one from the forum, serial number and year info is there: Phoenix Inverter 12/3000-230V VE.Bus

I need to install it at my parents house after they build a new house, my plan is if I can do it, is to run a PV inverter on the output of the Phoenix so the Phoenix will supply the Pv inverter to keep it on and the PV inverter will push back AC power in to the Phoenix to charge the batteries and the PV inverter will supply dedicated plugs in the house, and night time the phoenix will supply. Will be a off grid /standby setup with change over.

Yes, that can work, but you should also install a small PV charger directly to the battery, otherwise the system cannot restart when the batteries have been run down.

Thanks. Plans is to add a 10 or 20a 12v charger with a controller just for backup if I need to get the setup up and running from the grid but the PV charger is a good plan to. Will be running 2 x 200ah lithium batteries and add more later.

I think to be safe, see that you can access the settings shown in this thread: