RTH6300B Programmable Thermostat
7
Installation Guide
6
Did you purchase right thermostat? Count wires to check.
Count the number of wires coming out of the wall and attached to terminals in
your old thermostat. If any of them are attached to a terminal marked “C” or “C1”
do not count that wire in your total.
If the total (not counting C or C1) is 5 wires or less, proceed to the next page. If
you have 6 or more wires, your new thermostat may not be compatible with your
system. Stop installation and call 1-800-468-1502 for advice.
Do you have 6 or more wires? If so, stop now.
You may have purchased the wrong replace-
ment 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
C1
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
