I am asking the question in advance of actually having set up try out of curiosity. I am wandering if I can connect a 12v load while the MPPT unit is charging battery bank at 24v?
My guess is no as figure once a system voltage has been chosen by the controller all functions will be set such.
Interested to hear thoughts though as may well be another little bit of magic Victron smart controllers seam to be able to perform.