Honeywell Home RTH2410 Series Owner's Manual page 6

Alternate Wiring (Conventional Systems)
If labels do not match letters on the thermostat, check the chart below and
connect to terminal as shown here (see notes, below).
If wires will be connected to both R and Rc terminals, remove metal
jumper.
Do not use C or X. Wrap bare end of wire with electrical tape.
If you have a heat pump without auxiliary/backup heat connect O or B,
not both.
Alternate Wiring (Heat Pump)
If labels do not match letters on thermostat, see page 7.
4
B O G Y
6
4
R Rc
W/ Not
AUX Used
M38704
M32726