Recent content by Andy_Cov

Thanks - just what I was looking for. Did a bit more investigation on my system earlier and discovered the wiring centre behind the hot water cylinder on the top floor. Not so good was the moment when I opened it up and discovered that the internals had never been fitted and it was effectively...

Misremembered the earth - there isn't one. It's just the common that I have a question on.

Normally, I'd do this, but the Nest has five connections - live, neutral, call for heat, common and earth. Reading around, it seems that common is a low-voltage live. I don't have this, but can't help wondering if this only applies where the switching circuit doesn't run at mains voltage. Do I...

Hi, I'm currently contemplating replacement of my room thermostat with a Nest thermostat, but I have a quick question about installation. I currently have an Ideal Icos HE12 boiler, with a Drayton 522 timer. The room stat is a Drayton RTS1, and is mounted about 15m from the boiler. There are...