Honeywell RTH6300B Installation Manual page 9

RTH6300B Programmable Thermostat
Identify wires you will not use
If any wires are not attached to terminals in your old thermostat, do not
connect them to your new thermostat.
If a wire is attached to a terminal marked "C C " or "C C 1 1 ," disconnect it.You will not
connect it to your new thermostat.
Wrap the bare metal ends of each unused wire with electrical tape, so it
cannot touch and short out other wires.
Do not use unconnected wires
Do not use C or C1 wire
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