W 2 Wire Thermostat Wiring Diagram Carrier
36+ W 2 Wire Thermostat Wiring Diagram Carrier Images. Model ac has no connection to its o/w2 or y1/w2 outputs. It's a good idea to take a picture of your existing thermostat wiring before replacing it with nest as this is the easiest.
Write down what color wires go to above terminals.
Wiring must conform to local and national electrical codes. Operation of the chiller with an improper supply voltage or excessive phase imbalance constitutes abuse which will invalidate the carrier warranty. My thermostat has only two wires. Typically in a two wire setup the wires are red and white, but not always.
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