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by brett14
Fri Mar 19, 2021 5:47 pm
Forum: Help and Advice
Topic: Wiring 2 stage nest thermostat to zone board?
Replies: 1
Views: 799

Wiring 2 stage nest thermostat to zone board?

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...