RTH4300B Programmable Thermostat
3
If labels do not match letters on the thermo-
stat, check the chart at right and connect to
terminal as shown here (see notes, below).
If wires will be connected to both
R
and
Rc
terminals, remove metal
jumper (see page 12).
Do not use
C, X,
or
B
. Wrap bare
end of wire with electrical tape.
Do not connect both
O
and
B
if you have a heat pump. Connect
O
wire to
O
. Wrap
B
wire with
electrical tape and do not use.
Connect wires (less common wire designations)