User's Guide

Remember, the power to your
HVAC system must be off to avoid
blowing a fuse in your equipment.
6. Disconnect wires and
remove base
After removing the
base, we recommend
gently wrapping the
wires around a pen or
pencil to ensure they
don’t fall back into
the hole in the wall.
7. Mark where screws will go
Use the bubble level to make sure the
Nest Thermostat is level.
5. Label wires
Peel off the labels below and attach them to the
thermostat’s matching wires.
Use the white labels for any W3, E, HUM or DEHUM
wires. The
*
connector can only connect to one
of these wires.
See two names for each connector on your old
thermostat’s backplate? Visit nest.com/2labels
for help.
Two labels
Tip: Take a
picture of the
wires on your
old thermostat
to help you
remember.
Use trim plate if needed
You can cover up holes or marks left
by your old thermostat with the optional
trim plate.
Snap the base and trim plate together,
then screw them to the wall.
You’ll find the trim plate in the bottom
of the box.
Mounting on an electrical box
Electrical boxes aren’t common, but if you
have one, secure the steel plate to the
electrical box with two of the short steel plate
screws. Insert the screws into the long slots
on the steel plate.
Use the other two short screws to attach the
Nest base and trim plate to the steel plate.
Optional in most homes
Optional in most homes
064-00011-ES_16_InstallGuideENGLISH.indd 6-7 4/10/15 6:36 PM