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5. Remove any jumper wires
Jumper wires are short wires between two
connectors. The Nest Thermostat doesn’t
need jumpers. If your thermostat has jumpers,
remove them, but save them along with your
old thermostat.
IMPORTANT: If you have Rh and Rc wires, you have
a dual transformer system. The Nest Thermostat E
is not compatible with dual transformer systems,
but you may be able to use the 3rd generation Nest
Learning Thermostat.
If you haven’t already, go to nest.com/works
and enter your thermostat’s wires into the
compatibility checker.
• Enter only the connectors on your
thermostat that have wires in them
• Do not use wire colors – enter the
connector labels
• Do not enter any jumper wires into
the checker (see step 5)
If your system is compatible, you’ll get a
custom wiring diagram that you will need
to install your Nest Thermostat. You can
print it or email it to yourself.
4. Use the compatibility checker
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