How can I replace toon with an ecobee3 lite?
Ecobee from my understanding needs 3 wires. While I only get 2 wires from the toon setup. one is 24V and the other one I believe is used by toon to send power back to the boiler to signal heat on.
Boiler is connected to the ketelmodule which then wires back to the living room.
Do I need a fast-stat common maker or an external 24VAC transformer?
Also how safe is it if I mess up something?