I have an old thermostat that is not labeled, but the color is red and gray. I bought a new thermostat that has y1, RH, RC1, RC, Y/O, W/B, and G. Where do I hook up the red and gray wire to?

Asked by Orlando on 09/01/2009 1  Answer

ManualsOnline posted an answer 15 years, 2 months ago

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