What happens to the existing heating programmer?
I'm thinking of upgrading my central heating controls, the main reason is to replace the wired thermostat with a wireless one in a more suitable location. The system has a ~5yr old Worcester boiler with hot water tank controlled via a mid-position valve. The boiler is in the garage, the pump and midposition valve are in an upstairs cupboard along with an electrical junction box with a lot of wires. The programmer (Potterton EP2002) is in the kitchen.
I have recently replaced the pump and midposition valve myself, so I think I should be able to install the Tado system but I still can't find answers to some basic questions:
I can see that I will need to disable the old thermostat but what happens to it and the old programmer? Where does the Tado control box live?