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by angelop123
Mon Dec 31, 2018 4:36 pm
Forum: Help and Advice
Topic: EWC -ST-2D Zone 2 wiring
Replies: 1
Views: 5906

EWC -ST-2D Zone 2 wiring

My zone 1 thermostat has W Y RH/RC O B G C wiring My Zone 2 has W Y R, no C (working fine with a battery operated thermostat) If I add a C wire to my zone 2, I can use thermostats such as Ecobee. My question: will it work even though it has no O or B wire? I will leave my zone 1 thermostat installed...