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- Fri Mar 19, 2021 5:47 pm
- Forum: Help and Advice
- Topic: Wiring 2 stage nest thermostat to zone board?
- Replies: 1
- Views: 799
I have a NCM300 and the way it controls the 2nd stage coming on is how long the furnace is running. I was told I would get my thermostat to control it but would have to wire in a isolation relay. I’m not sure how to do that and would I have to wire one for each zone? Any info would be appreciated th...