Question about Heating & Cooling
If you would have a two transformer system..... The power wire from the furnace transformer would hook up on R and the power wire from the Air Conditioner transformer would hook up to Rc....
BUT most systems now only have one transformer...... So if you are using this thermostat you will need to put a jumper wire from R to Rc. So the Air Conditioner will work. Furnace is the source of the transformer. R/Rc,W,Y, C, on the Thermostat will Hook up to R,W, Y,C on the furnace and Two wire from the Air Conditioner would hook up on Y and C on the furnace.....Good Luck.
Posted on Apr 02, 2011
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Posted on Jan 02, 2017
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