I was replacing my 2 thermostats controlled by a 2 mini zone system (Trol-A-Temp). One of the thermostat has 6 wires/terminals (Y,W,R,G,O,B). The other one has 3 wires/terminals (Y,W,R). I was planning to use an ecobee thermostats but don’t know where to connect the terminals O and B of the first thermostat. Also if I will only connect the 3 wires of the second thermostat, will it be able to access the fan when there’s no wiring provided for it? Thanks.
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