Yet another how to wire up nest/ecobee question. Basically both nest and ecobee doesn't power on. Nest is 3, i took from my house to tried out. Ecobee 4 is new, got it onsale during BF. This was a house converted from oil to gas. Was on nest 2, nest 2 worked with the R & W wiring. But after conversion, it doesn't work anymore. Any tips ? Thanks..
The boiler is weil mclain peg/eg-50. First pic is existing wiring to simple thermostat , just R & W.
R at thermostat goes to Y in the schematics
W at thermostat goes to W in the schematics
C goes to C in diagram - I added.
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