nest Thermostat E Manual de usuario
Thermostat E
Installation Guide
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Compatibility
The Nest Thermostat E works with most 24V
systems, including forced air, variable speed,
heat pump and radiant systems, as well as
common fuel types such as natural gas,
electricity and oil.
It can control:
• Heating and cooling: one stage of heating
and cooling, and a second stage of either
heating or cooling
• Heat pumps: with auxiliary and
emergency heat
• Fans: one speed
You can check your system’s compatibility
at nest.com/ca/works
Professional installation is recommended for
dual fuel systems (heat pump with furnace).
Watch the video
To see an overview of how to install the Nest Thermostat,
visit support.nest.com/ca/thermostat-e
Don’t want to install your
Nest Thermostat yourself?
The Nest Thermostat is designed for DIY
installation, but you can also hire a Nest Pro
to do it for you. They’ll take care of installation
and make sure everything’s up and running.
Go to nest.com/ca/install to find a Nest Pro
installer near you.
In the box
Display
Trim plate
Base
Wall screws
Breaker box System switch
or
1. Switch off power
This protects you and avoids blowing a fuse in your
equipment. To make sure the power is off, change
the temperature with your current thermostat
and wait at least five minutes to be sure that your
system doesn’t turn on.
2. Remove the cover
Some thermostat covers pop off, while others
need to be unscrewed. Older thermostats may
have a second plate that should also be removed
to expose the wires.
BOGYWAAC
NOT
USED
3. Take a picture of the wires
Take a picture of your thermostat’s wires and
save it for reference. Make sure you can read
the wire terminal labels.
IMPORTANT:If there are two labels on
your thermostat’s wire connectors, go
to nest.com/ca/labels for detailed help
and instructions.
Incompatible wiring and voltage
Stranded wires
Stranded wires aren’t compatible with the
Nest Thermostat.
High-voltage wires
If your thermostat is labeled 120V or 240V,
or has thick wires with wire nuts, or has
L1 and L2 terminal blocks, your system
is high voltage and isn’t compatible with
the Nest Thermostat.
If you haven’t already, go to nest.com/ca/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
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.
6.Label the wires
Peel off the labels below and attach them
to the thermostat’s matching wires.
Note: If you have an Rc or Rh wire, put the
R label on it.
IMPORTANT:If you’re unsure about wiring
your thermostat, go to nest.com/ca/install
to contact a Nest Pro in your area.
Wiring tips
Wire colors can vary, but:
• Common or C wires are generally blue.
• If there’s an orange wire in the connector labeled both W and O/B,
then you likely have a heat pump. Put this wire in the Nest Thermostat’s
*O/B connector.
• If there’s a white wire in the connector labeled both W and O/B,
then you probably don’t have a heat pump. Put this wire in the Nest
Thermostat’s W connector.
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