Hive Dual Channel wiring

Oh I'm really sorry about that. Since in Greek they are both called the same, I thought it was the same in English.
No need to be sorry , a mid position valve will allow CH on its own, HW on its own or both on at the same time , that is why it needs a HW off wire to close the HW side when satisfied, the "3 port" that you have simply diverts the water heating the Cylinder from the solar to the water coming from the boiler
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