User's Manual

1. Switch off power
This protects you and avoids blowing a
fuse. Adjust the temperature on your old
thermostat to make sure your system is off.
2. Remove cover
Some covers pop off, while others need
to be unscrewed.
CAUTION: Do not connect Nest to
high voltage wires.
4. Remove any jumper wires
Jumper wires are short wires between
two connectors. Nest doesn’t need them.
An R wire can go into either Rc or Rh.
3. Check your system
If your old thermostat is labeled 110V or 220V
or has thick wires with wire nuts, your system
is high voltage. Not sure? Contact support.
Breaker Box Switch