Using AUX port to power immersion Heater
I live in the UK and currently have a 3.6Kwh ecco inverter with a couple of Sunsynk batteries.
During the winter it is very rare for us to have surplus energy being produced however in the summer it is a different case.
Therefore i am looking at the feasability of using the AUX port in the summer to divert this excess energy to our immersion heater so that i can gradually heat up our hot water supply.
i have done a little research and would like to know if anybody else in the UK is using there sunsynk system in the same way?
Also i would like to know if when using the AUX port for this purpose, is the energy that potentially is diverted to the immeersion heater comminfg from the batteries or is it the excess energy once the batteries have reaced 100 percent SOC (this percentage i believe is set in the AUX tab). The reason i ask is that i dont want to put too much preasure on the batteries and reduce thier potential life span.
I would also be interested in how this is physically connected. i.e wired directly from the AUX port of the inverter to the heating element of the immersion heater. If this is the case, what happens to the existing grid connection to the heating element of the immersion heater?
Alot of questions but i feel would be useful for the UK market
Thank you all in advance
Chris

You want zero export + solar export.and you want iboost to be wired before sunsynk CT