lyric t6

Hiya all, I have WB 4000 system. 2 twin channel Lyric T6's and 1 single channel T6. 1st dos zone 1 and hot water with a 2port valve each. 2nd zone 2 and a 2prot Vale. The 3rd T6 go's to UH pump no two port valve. First 3 liven up Orange (from B on receiver box) and that go's to LR on the...

Hi All, I'm trying to upgrade my existing Honeywell CM907 thermostat to a newer Honeywell Lyric T6 but can't quite figure out how to translate the wiring from one to the other. The wiring diagrams are attached - As you can see the CM907 has two wires going to it from the boiler but the T6 also...