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View Full Version : Thermostat wiring


donaldh83
Dec 31, 2011, 07:54 AM
How to wire thermostat to a amana furnace

drtom4444
Jan 1, 2012, 12:32 PM
The wiring is as follows: The transformer has two sides on 24 volt side: "C" and "R." "C" is common and is wired common to all relays. "R" goes to R on t-stat, "Y" goes to Y and brings in cooling relay or contactor; "W" goes to W on T-Stat and goes to gas valve; "G" goes to G on T-Stat and goes to fan relay for high speed for AC. It's that simple.