Replacing Salus thermostat with Tado
I have a bog standard (Main Eco Elite) combi boiler. The heating is operated by a local "programmer" in the boiler (with the clicky tabs on a circular mechanical timer), and also switched on and off by a wall mounted unit which in turn communicates with a wireless thermostat.
The unit on the wall is a very boring switch.
I want to replace the wall switch unit with a Tado smart thermostat. Tado support are being surprisingly unhelpful. They want me to replace the programmer with an extension kit but I do not need to or want to. I just want to replace the wall mounted heating on/off switch with a Tado thermostat.
So my question to the forum is: which wires do I plug into which sockets of the Tado smart thermostat.
My current unit has connections marked NO, COM, L and N. The Tado has NO, NC, COM on the left and A, - and + on the right.
Please can someone tell me what goes into what?
Thanks in advance.