Advanced Installation Guide
If labels do not match letters on the thermostat, check the
chart below and connect to terminal as shown here (see
If wires will be connected to both
remove metal jumper (see page 6).
Do not use
If you have a heat pump without auxiliary/backup heat
connect O or B, not both. If you do not have a heat
pump, do not connect B. Wrap bare end of wire with
Place a jumper (piece of wire) between Y and W if you
are using a heat pump without auxiliary/backup heat.
Thermostat does not work on Heat Pumps with auxiliary/
. Wrap bare end of wire with