Installation Manual

General Information
Nest Thermostat E Installation Features
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No jumper wires needed
The Nest Thermostat does not use jumper wires, it will automatically jump terminals for you. Do not connect
jumper wires to the Nest Thermostat. Before removing any wires from the old thermostat, including jumper
wires, take a picture of the existing wiring configuration in case you or the homeowner need to reinstall it. 
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System Match
When you first install the Nest Thermostat, it checks to see what wires you’ve inserted into the base’s
connectors and prompts you for additional information where needed. 
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Pro Setup
Pro Setup lets Nest Pros configure advanced settings in order to set up complex systems including heat
pumps and dual-fuel systems. Pro Setup also activates a customer’s extended warranty if the Nest
Thermostat is purchased from and installed by a Pro. 
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Silent relays
Nest Thermostats use solid state switching instead of relays so there’s no noise when it switches on or off.
You will not hear any “clicking” during system testing and activation.
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Press connectors
Connecting the HVAC system wiring to the Nest Thermostat base is easy using the press connectors. Simply
insert the wire into the connector as far as it will go until the press connector stays in the down position.
Multifunctional Star / OB connector
The */OB connector on the Nest Thermostat can control a number of different applications. If you insert a wire
into this terminal, the Nest Thermostat will ask you to select the application and will control it based on your
selection. For a list of compatible applications that can be inserted into the */OB connector, see the wiring
diagrams below.
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