Help with thermostat wiring Sunvic tlx 2251

[jojo77]

Can anyone please explain the wiring on my old thermostat.
I would like to replace it with a modern Salus wired controller (don't know which yet)
I don't see the need in using a wireless system so I'm just going to replace the control with a modern wired unit.
Currently the boiler has the 7 day programmer inbuilt, how to I tell the boiler to ignore itself and take instructions from the salus, I have a Ferroli F30 boiler

thanks
Stephen

 

[Echo the husky]

Edit to correct mistakes :
Any battery operated room thermostat will work with this boiler, there are 2 connections, but they are hidden in the photos. If you want a digital, programmable one, this one from Honeywell is good. Sunvic make good reliable stats, in my opinion Salus would be a bit of a downgrade, though the Honeywell is a bit more expensive!

 

[jackthom]

Currently the boiler has the 7 day programmer inbuilt, how to I tell the boiler to ignore itself and take instructions from the salus, I have a Ferroli F30 boiler.

If you are going for a new programmable thermostat you just need to set the boiler programmer to permanently ON, then the new thermostat has full control of the schedule.

 

[Echo the husky]

Oh sorry I missread that you DID want a programmable stat!

 

[jojo77]

thank you for the advice, I'll remone the Sunvic on Wednesday to see the wiring behind it and update the thread if I don't understand
thanks

 

[jojo77]

I went ahead and bought sunstat and removed my old SunVic but I don't understand how to wire the new sunstat. I have a blue and brown coming from the wall and don't know how to connect them to the sunstat, could you please give me some guidance
thanks

 

[jackthom]

The 2 wires go to terminals 4 and 5, it doesn't matter which way round.

 

[jojo77]

All wired up and working.
thanks