Hi Folks,
Thanks for all the comments and suggestions! No fried board as I always checked the voltage on the switch wires before I wired anything in. I didnt like the sound of 240v on 24v terminals either.
Connected 1 and 3 to the 24v side as suggested, all working perfectly now.
Thanks again!
Hi,
I have been trying to add a new thermostat to my Saunier duval Therma Condense F 30 E.
The wiring instructions with the boiler are poor to say the least. The below is all its says.
Additionally I know its a zero volt switch on the terminals with the link wire shown below.
This is a pic I...