I didn't find it helpful at all - just interpreted it as a typical internet comment.
I was simply just trying to find out what the wires did, ericmark provided that and much more.
Thanks all
Hi All
I'm trying to replace Honeywell thermostats with Nest. I don't do this professionally (something similar-ish) but have a fair amount of experience. The wiring centre is simple, Neutral, Live and Earth and six wires from three existing thermostats (two each).
I think the valves are...