Nest Separate O And B Wires
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The wires from the controller to zone 1 tstat include o and b and the unit says they tell the furnace whether to be in cool or heat mode. Existing tstat obviously has o and b older. On my current thermostat (ritetemp model 8022) i have separate terminals for the o and b wires. The nest has a single terminal for o/b.
The o/b terminals on the nest are for heat pump operation. Ask your own hvac question i have blue/orange/black coming out of the damper. The blue connects from damper. Hi i am dan i can help you with this. If you have an o and a b wire on your thermostat that means you have an ewc zone system and you are working on the master thermostat. For a nest learning thermostat: Y1 = yellow (heat/cool) g = green (fan) o/b = orange (heat pump) rc or rh = red (power) w2 = white (auxiliary heat) c = blue (common) what does the. How should my nest thermostat be wired? If your thermostat doesn't have a separate connector labeled c and you're not sure what type of system you have:
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