Thanks for all the replies and suggestions RandomGrinch and CBW!
I got this working! The Tado comes with a wireless thermostat. Tado advised me that this wouldn't work for my house and I need two wired thermostats. However, it turns out the wireless thermostat controls the hot water.
So if...
Thanks for the help! I got the heating working.
The hot water however doesn't seem to work. Any ideas? Here is my updated wiring:
Tado Wireless Receiver
I don’t suppose the thermostats would have any impact on the hot water. But I have included the updated wiring:
Replacement for...
I previously had the following set up:
Honeywell T6360B thermostat (on Ground floor)
Bosstherm BRTMK2 (On Top Floor)
Siemens RWB9: Main unit - This controls both the Honeywell and Bosstherm as well as the hot water.
The current boiler is Patterton Suprema boiler 100L 9016
There is also a...