Hi, I am changing my old Timeguard TRT030 stat to a Honeywell THR870CUK programmable stat. The problem is that the old stat appears to be 3 wires plus earth and the new stat is 2 wire, plz see enclosed pics, the wiring drawing is for the new Honeywell stat, can anyone explain with wires go where as I'm assured it will work but I find the instructions rather confusing... Thanks in advance
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