Ecobee EB-STATE5BX-01 Instruction sheet

How to install
your ecobee

1 2
Download the ecobee app
The ecobee app has instructions, step-by-step videos,
and diagrams customized to your wiring setup. Register
your ecobee after installation to unlock smart features
like Amazon Alexa.
Important Information
Look out for these icons at the bottom of each step.
They indicate useful tips and important reminders.
TIPS
WARNINGS

Rc
G
Y1
Y2
O/B
PEK
ACC-
ACC+
W2
W1
RH
C
Rc
G
Y1
Y2
O/B
PEK
ACC-
ACC+
W2
W1
RH
C
3 4
First things first. Here’s what you’ll find in the box:
SmartThermostat BackplateSmartSensor, stand,
and wall-mount
Power Extender
Kit (PEK)
Drywall plugs
(x2)
Screws
(x2)
Install guide (this booklet)
quick start guide & wire labels
Trim plate
You may also need these tools:
Drill for mounting
anchors (3/16” drill bit)
Small flathead
screwdriver
Phillips
screwdriver
Hammer Pencil Wire stripper

ON OFF
ON
OFF
5 6
STEP 1
Power o your Heating, Ventilation, and Air Conditioning
(HVAC) system by using the master switch or circuit
breaker box. This is important for your safety.
TIP: Look for your master switch or circuit breaker box in the basement, attic,
utility closet, or behind a wall panel near the thermostat.
TIP: If you have a boiler, check to see that the main flame is extinguished.
STEP 2
Confirm your system is o by turning on your heat (during
winter) or your AC (during summer). Wait a few minutes—
you should not feel air coming from your vents.

110 VAC
OR
120 VAC
OR
240 VAC
WARNING
HIGH VOLTAGE
L1 L2
YES NO
7 8
STEP 3
Remove your old thermostat cover from the wall.
TIP: Many thermostats simply pop o or unclip from the base, while others
may have screws that you will need to remove.
Sadly, you might
not be compatible.
you can double-check at
ecobee.com/compatibility
Great, please continue
to the NEXT PAGE.
CHECKPOINT: COMPATIBILITY
Does your old thermostat’s backplate have any
of these indicators?

TIP: The wiring on your old thermostat may look dierent—
just check to see if there’s a C wire.
YES NO
RCRH
RCRHRCRH
RCRH
9 10
STEP 4
Take a picture of the wires connected to the terminals of
your old thermostat. You may need to reference this photo
later on.
WARNING: ecobee is designed for 24VAC with a 2A maximum current.
Do not connect it to line (high) voltage or millivolt systems.
CHECKPOINT: C WIRE
Do you have a C wire connected to your old thermostat?
Great! Continue
to the NEXT PAGE.
Go to PAGE 39 to
install with a PEK.

TIP: The wiring on your old thermostat may look dierent—
just check to see if there are multiple G wires.
YES NO
RCRH
RCRH
RCG1G2G3Y W C
RCRH
11 12
TIP: To install accessories (humidifier, dehumidifier or ventilator) please
refer to the wiring diagrams at ecobee.com/wiring
Install your ecobee
with a C wire
If you have a C wire, it will power your ecobee.
You won’t need the Power Extender Kit (PEK)
included in the box.
CHECKPOINT: G WIRES
Do you have multiple G wires connected to your
old thermostat? I.e G1, G2, G3or GL, GM, GH
No problem!
Go to PAGE 26 to wire
your backplate.
Great! Continue to
the NEXT PAGE.

W/W1
Y/Y1
Rc
RCRH
R
C
RCRH
W/W1
Y/Y1
13 14
STEP 5
Carefully disconnect and label the wires from your old
thermostat one at a time, using the labels provided.
TIP: If you have a jumper between RC, RH, or R, leave it alone.
Only label the wires that run from your wall into a terminal block.
STE P 6
Unscrew the mounting plate of your old thermostat
to remove it from the wall.
WARNING: Be careful, as some thermostats may contain mercury.
Recycle your old thermostat safely with your local hazardous waste facility.

Backplate
Trim plate
Rc
G
Y/Y1
W/W1
C
15 16
STE P 7
Decide if you want to use the trim plate with your ecobee.
The trim plate is useful if you want to hide marks or holes
left on the wall by your old thermostat.
If using the trim plate, align the mounting holes on the trim
plate and backplate and press them into place together.
STEP 8
Pull the wires through the hole in the middle of the
backplate and then attach the backplate to the wall
using the drywall anchors and screws provided.
TIP: Use a 3/16" drill bit to drill a hole for the drywall anchors.

ACC-
ACC+
W2
W1
RH
C
Rc
G
Y1
Y2
O/B
PEK
ACC-
ACC+
W2
W1
RH
C
Rc
G
Y1
Y2
O/B
PEK
R
G
C
W/W1
Y/Y1
R
G
C
W/W1
Y/Y1
R
H
YES NO
ACC-
ACC+
W2
W1
RH
C
Rc
G
Y1
Y2
O/B
PEK
ACC-
ACC+
W2
W1
RH
C
Rc
G
Y1
Y2
O/B
PEK
R
G
C
W/W1
Y/Y1
R
G
C
W/W1
Y/Y1
R
H
Rc
G
Y1
Y2
O/B
PEK
ACC-
ACC+
W2
W1
RH
C
Rc
G
C
W/W1
Y/Y1
Rc
G
Y1
Y2
O/B
PEK
ACC-
ACC+
W2
W1
RH
C
Rc
G
C
W/W1
Y/Y1
17 18
CHECKPOINT: INSERT YOUR R WIRE(S)
Do you have more than one R wire?
(That includes R, RC, and RH)
Insert your wires:
Ror RC➔RC
RH➔RH
Insert your single wire:
R, RC,or RH➔RC
STEP 9
Insert your remaining wires into the side (not the front)
of their corresponding terminal blocks.
TIP: Press the terminal block levers to insert the wires more easily.

TIP: Large holes behind your thermostat will aect temperature readings.
Prevent drafts by covering the hole(s).19 20
STEP 10
Tug on the wires gently to ensure they
are securely connected.
TIP: When a wire has been connected correctly,
the lever on that block will lower.
STE P 11
Carefully push any excess wires back into the hole
and ensure there are no drafts coming from the hole(s)
in the wall.

ON OFF
ON
OFF
21 22
STEP 12
Gently press your ecobee into the backplate
until it ‘clicks’ into place.
TIP: If the thermostat ‘rocks’ or is not flush with the wall, be sure the excess
wires are pushed all the way into the wall.
STE P 13
Turn the power to your HVAC system back on using the
master switch or at the circuit breaker box.

23 24
TIP: If your thermostat does not power on, please see the troubleshooting
section on PAGE 64.
Congratulations, you did it!
Say hi to your new ecobee! To complete your setup and
registrations, follow the instructions on your ecobee screen.

Install your ecobee
with multiple G wires
RCG1G2G3Y W C
RCRH
25 2626
We can help you find a pro
Installation of a system with multiple G wires means
you have a multi-speed fan. Depending on the
equipment in your building, this may require you
to select wiring configurations that can damage
your system if done incorrectly.
If you would rather leave it up to a professional,
we can help you find one quickly.
ecobee.com/proinstall

Rc
RCR G1G2G3Y W C
Rc
R
G
2
G
3
Y/Y1
W/W1
RCR G1G2G3Y W C
Rc
R
G
2
G
3
Y/Y1
W/W1
27 28
STEP 5
Carefully disconnect and label the wires from your old
thermostat one at a time, using the labels provided.
TIP: If you have a jumper between RCand R, leave it alone.
Only label the wires that run from your wall into a terminal block.
STE P 6
Unscrew the mounting plate of your old thermostat
to remove it from the wall.
WARNING: Be careful, as some thermostats may contain mercury.
Recycle your old thermostat safely with your local hazardous waste facility.

Backplate
Trim plate
Rc
G
Y/Y1
W/W1
C
29 30
STE P 7
Decide if you want to use the trim plate with your ecobee.
The trim plate is useful if you want to hide marks or holes
left on the wall by your old thermostat.
If using the trim plate, align the mounting holes on the trim
plate and backplate and press them into place together.
STEP 8
Pull the wires through the hole in the middle of the
backplate and then attach the backplate to the wall
using the drywall anchors and screws provided.
TIP: Use a 3/16" drill bit to drill a hole for the drywall anchors.

Rc
G
Y1
Y2
O/B
PEK
ACC-
ACC+
W2
W1
RH
C
Rc
G
CW/W1
Y/Y1
Rc
G
Y1
Y2
O/B
PEK
ACC-
ACC+
W2
W1
RH
C
Rc
G3
Y2
S1
RH
S2
PEK
W2
Y/Y1
G
R
G2
C
Rc
G
Y1
Y2
O/B
PEK
ACC-
ACC+
W2
W1
RH
C
Rc
R
G3
W2
G2
Y2
Label the wires at your thermostat.
STEP 9
Remove the Rc, Y2, and W2 white labels from the label
sheet and attach them to the wires as shown below:
R/RC➔ Rc
G2 ➔ Y2
G3 ➔ W2
OPTIONAL:
If your system has a pipe sensor,
attach the white RH label to the S1
wire, and the white PEK label to
the to S2 wire.
S1 ➔ RH
S2 ➔ PEK
OPTIONAL:
If your system has a pipe sensor, attach your S1 and S2 wires as above.
S1 and S2 wires are shown in dotted grey lines.
31 32
STEP 10
First, connect these 3 wires as shown: RC, G2, G3.
Then, insert your remaining wires into the side
(not the front) of their corresponding terminal blocks.
TIP: Press the terminal block levers to insert the wires more easily.

TIP: Large holes behind your thermostat will aect temperature readings.
Prevent drafts by covering the hole(s).33 34
STEP 11
Tug on the wires gently to ensure they
are securely connected.
TIP: When a wire has been connected correctly,
the lever on that block will lower.
STE P 12
Carefully push any excess wires back into the hole
and ensure there are no drafts coming from the hole(s)
in the wall.

ON OFF
ON
OFF
35 36
STEP 13
Gently press your ecobee into the backplate
until it ‘clicks’ into place.
TIP: If the thermostat ‘rocks’ or is not flush with the wall, be sure the excess
wires are pushed all the way into the wall.
STE P 14
Turn the power to your HVAC system back on using the
master switch or at the circuit breaker box.

Are you a homeowner or pro?
I’m a homeowner
I’m a pro
37 38
TIP: If your thermostat does not power on, please see the troubleshooting
section on PAGE 64.
Congratulations, you did it!
Say hi to your new ecobee! To complete your setup and
registrations, you must select “I’m a pro” when your
thermostat powers on.