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STEP 12
I have wires marked W2, E, or X. Where do I connect these wires.
If your old thermostat has a W2 or E, or X wire, and/or two mercury bulbs, and/or an emergency heat (emer) position on switch.
You probably have a 2 stage heat pump system.
You need a thermostat models that says it is specifically compatible with 2 stage heat pumps. These Ritetemp units will be available in Fall 2003.
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