Honeywell RTH6300B Owner's Manual - Page 9

Identify wires you will - programmable thermostat

Page 9 highlights

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" or "C1," 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 7

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RTH6300B Programmable Thermostat
7
Identify wires you will
not
use
If any wires are not attac
hed
to terminals in your old thermostat, do not
connect them to your new thermostat.
If a wire is attached to a terminal marked “
C
” or “
C1
,”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