I recently purchased a new thermostat for combi boiler, looking at the old one there's a brown wire going to l and and blue cable going to l1, the new thermostat has N, L, dry and contact. Where do the wires go please...
Dry, contact? What's that mean? Pictures of the wiring of the old and the terminals on the new one please. If that's difficult, the make and model number of both devices.
Are you sure that Stat also has a built-in sensor? Because it does look as tho' it's designed for UFH with a remote sensor. Anyhoo, wiring that one ain't the problem - the problem is what wires do you have, and where did they go on the old stat. If you really only have two wires, then I believe you are stuffed and will need a battery-operated Stat. Can you post a pic of the old one?
The new thermostat needs a neutral, and you haven't got one. And as above post #4, it looks like the wrong stat anyways. (Make/model numbner will help.....) Whatever the outcome of that, If you are going for a digital stat, you are either going to have to rewire it, or get a stat that takes batteries.
Steven, that new stat won't work without an additional neutral wire since it doesn't run on batteries. Yes, it looks nice, But I would suggest an alternative, one that is battery-powered. If you insist on keeping it, then you'll (a) need a further wire installed and (b) need to confirm that is has a BUILT-IN heat sensor to detect the actual room temp. It may have, but it isn't certain.
I’m sorry, Steven. The cable to the existing stat has only live, boiler call and earth. There is no neutral in that cable. Ps. The wiring diagrams show, in all cases, a temperature probe being attached. I don’t know if that is what you expect?