5. Using the provided stickers, label each wire according to the chart.
If the terminals are not labeled, contact a qualified HVAC technician.
NOTE: Wire colors do not always comply with standards; therefore, wire color should be ignored. Refer to the existing terminal designation for proper identification.
If wires marked “Y” or “C” are both present, “C” may be a Common wire and provides 24 VAC power to the unit. Connecting it greatly extends battery life. If there is no "C" wire, the thermostat
will run on battery power.
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