Installation Guide

Breaker box
System switch
or
11. Attach the display
Push the display onto the base until it clicks.
12. Switch the power back on
10. Connect wires
Use the wiring diagram you got from the
compatibility checker in step 4 to connect
your system wires to the Nest Thermostat.
Note: If you have an R, Rc or Rh wire,
you can put it into the R connector on
the Nest Thermostat.
If you have a W2, Y2 or O/B wire, you
can put it into the *O/B connector,
if needed.
The exposed wire should be straight.
3/8 in
Gently tug each wire to check
they’re secure, and make sure
each connector that has a wire
stays down.
After all the wires are securely
connected, push them down
to make sure they’re flush with
the base.