ecobee ecobee3 lite - Smart Thermostat Manual

Let's get started!

Download the ecobee app for customized installation instructions.

Or continue reading!

What's in the box

First things first. Here's what you'll find in the box.

You'll also need these tools:

OPTIONAL:

Guide 1 or Guide 2?

Start here to find out.

The steps in this section will help you decide which install guide you'll use to complete the installation.

These icons indicate useful tips and important reminders.

STEP 1

Power off 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.

STEP 2

Confirm your system is off 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.

TIP: If you have a boiler, check to see that the main flame is extinguished.

STEP 3

Remove your old thermostat cover from the wall.

TIP: Many thermostats simply pop off or unclip from the base, while others may have screws that you will need to remove.

CHECKPOINT: COMPATIBILITY

Does your old thermostat's backplate have any of these indicators?

• YES: Sadly, you might not be compatible
  You can double check here: ecobee.com/compatibility
• NO: Great, please continue to the next page

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.

ecobee3 lite 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?

• YES: Continue to Guide 1
• NO: Continue to Guide 2

GUIDE 1: 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 included in the box.

CHECKPOINT: DON'T SKIP AHEAD

Have you completed steps 1 - 4 in the 'Start Your Install' section?

• YES Continue to the next page
• NO Return to step 1 in 'Start Your Install'

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.

STEP 6

Unscrew the mounting plate of your old thermostat to remove it from the wall.

Be careful, as some thermostats may contain mercury. Recycle your old thermostat safely with your local hazardous waste facility.

STEP 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.

STEP 8: OPTIONAL

If using the trim plate, align the mounting holes on the trim plate and backplate and press them into place together.

STEP 9

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 plugs.

CHECKPOINT: INSERT YOUR R WIRE(S)

Do you have more than one R wire?
(That includes R, Rc, and Rh)

• YES: Insert your wires:
  R OR Rc ➔ Rc
  R_H ➔ R_H
• NO: Insert your single R, Rc or R_H wire into the Rc terminal.

STEP 10

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.

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.

STEP 12

Carefully push any excess wire back into the hole and ensure there are no drafts coming from the hole(s) in the wall.

TIP: Large holes behind your thermostat will affect temperature readings. Prevent drafts by covering the hole(s).

STEP 13

Gently press your ecobee thermostat 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.

STEP 14

Turn the power to your HVAC system back on using the master switch or at the circuit breaker box.

STEP 15

Say hi to your new ecobee! The screen will power on and guide you through the set-up and registration.

TIP: If your thermostat does not power on, please see the troubleshooting tips in the 'Extras' section.

ALL DONE!

Congratulations, you did it!

To complete your set-up, follow the instructions on your ecobee screen.

GUIDE 2: Install your ecobee without a C-wire

If you don't have a C wire, you'll need to use the Power Extender Kit (PEK) included to reliably power your ecobee.

CHECKPOINT: DON'T SKIP AHEAD

Have you completed steps 1 - 4 in the 'Start Your Install' section?

• YES: Continue to the next page
• NO: Return to step 1 in 'Start Your Install'

CHECKPOINT: 3 OR 4 WIRES

The Power Extender Kit requires your system to have the following wires:
4 wires: W/W1, Y/Y1, G and R (or Rc or R_H )

OR

3 wires: Y/Y1, G and R (or Rc or R_H )

Do you have these wires?

• YES: Continue to the next page
  The Power Extender kit will work with your system!
• NO: Give us a call Looks like you have one or more wires missing.
  Please contact ecobee support for more information.
  1.877.932.6233 or support@ecobee.com

STEP 5

Take your Power Extender Kit, wire labels, tools, your smart phone, and go to your HVAC system.

TIP: Your HVAC system can most often be found in your basement or your attic.

STEP 6

Open your HVAC system's cover to reveal the control board.

HVAC systems contain high voltage wires. Use caution when working with the control board.

STEP 7

Take a picture of the wires connected to your control board. You may need to reference this photo later on.

STEP 8

Label only the R, Y or Y1, G and W or W1 wires with the matching labels provided. If you have more than one wire going into these terminals, only label those coming from your thermostat.

TIP: If you have wires connected to both R c and R h terminals at the control board you may have a two transformer system. Please contact support to help you with installation: 1.877.932.6233 or support@ecobee.com.

STEP 9

Disconnect the labeled R, Y, G and W wires from the control board.

STEP 10

Connect the wires you disconnected from the control board into their matching gray terminal blocks on the Power Extender Kit.

TIP: Press the buttons to insert the wires more easily.

STEP 11

Connect the wires you disconnected from the control board into their matching gray terminal blocks on the Power Extender Kit.

TIP: When a wire has been connected correctly, the button on that block will lower.

STEP 12

Connect the 5 white wires coming out of the Power Extender Kit to the corresponding terminals on your control board.

TIP: Once again, tug on the wires gently to ensure they are securely connected.

Tug on the wires gently to ensure they are securely connected.

CHECKPOINT: POWER EXTENDER KIT

Check that you have installed the Power Extender Kit correctly. It should be installed between your thermostat wiring and your control board.

STEP 13

Mount the Power Extender Kit inside your HVAC system, taking care not to strain the wires. Close the HVAC cover panel securely and return to your thermostat.

TIP: Make sure your HVAC panel is fully closed. Some systems will not turn on if the cover panel has not been closed properly.

STEP 14

Back at your thermostat: 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, R_H or R, leave it alone. Only label the wires that run from your wall into a terminal block.

STEP 15

Unscrew the mounting plate of your old thermostat to remove it from the wall.

Be careful, as some thermostats may contain mercury. Recycle your old thermostat safely with your local hazardous waste facility.

STEP 16

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 on the wall left by your old thermostat.

STEP 17: OPTIONAL

If using the trim plate, align the mounting holes on the trim plate and backplate and press them into place together.

STEP 18

Pull the wires through the hole in the middle of the backplate and then attach it to the wall using the drywall anchors and screws provided.

TIP: Use a 3/16" drill bit to drill a hole for the drywall plugs.

STEP 19

First, connect these 3 wires as shown:
R/Rc/R_H ➔ Rc
G ➔ C
Y ➔ PEK

Then, connect any remaining wires to their corresponding terminal.

TIP: Press the terminal block levers to insert the wires more easily.

STEP 20

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.

STEP 21

Carefully push any excess wires back into the hole and ensure there are no drafts coming from the hole(s) in the wall.

TIP: Large holes behind your thermostat will affect temperature readings. Prevent drafts by covering the hole(s).

STEP 22

Gently press your ecobee thermostat 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.

STEP 23

Turn the power to your HVAC system back on using the master switch or at the circuit breaker box.

STEP 24

Say hi to your new ecobee! The screen will power on and guide you through the set-up and registration.

TIP: If your thermostat does not power on, please see the troubleshooting tips in the 'Extras' section.

ALL DONE!

Congratulations, you did it!
To complete your set-up, follow the instructions on your ecobee screen.

TROUBLESHOOTING

If your ecobee doesn't turn on, please try these steps:

1. Check that all wires are properly inserted into the terminal blocks at the thermostat. Tug on the wires to ensure they are not loose.
   
2. Make sure your HVAC cover panel is closed. Some systems will not turn on if the cover panel has not been closed properly.
   
3. If you have only one R wire (either R, Rc, or R_H), make sure it's inserted into the Rc terminal.
   R (or Rc or R_H) ➔ Rc
   
4. If you installed the Power Extender Kit, make sure you inserted the wires into the correct terminals:
   R (or Rc or R_H) ➔ Rc
   G ➔ C
   Y ➔ PEK
   

MEET YOUR ECOBEE

Here's what you'll see on the home screen

And here's what that means

System Mode
Shows your current ecobee setting [heat/cool/auto/off]

Humidity
Shows the indoor humidity in your home

Temperature
Shows the temperature in your home

Menu
Allows you to control your system, schedule a vacation, and more

Weather
Shows the local weather and forecast for the week

Quick Changes
Touch this button to easily switch from Home and Away

Slider to adjust Temperature
Slide the bubble up or down to adjust your preferred temperature

These system mode icons are shown on the Home screen and in Quick Changes

Heat
Your system is in heat mode. A white icon means your system is off. An orange icon means your system is running.

Fan
Your fan is currently running.

Cool
Your system is in cool mode. A white icon means your system is off. A blue icon means your system is running.

Auto
Your system is in Auto mode, meaning your system will heat or cool as required.

More common icons you'll find

Home Screen

	Menu
	Menu (with notification)
	Weather
	Quick Changes

Menu

	Registration
	Vacation
	System
	Settings
	Reminders and Alerts
	Comfort Settings
	Schedule
	About

Comfort Settings

	Home
	Away
	Sleep
	Custom 1 (of 5)

WIRING DIAGRAM

Conventional heating and cooling (up to 2 stages each)

Stage 2 heat and cool, if applicable

NOTE: Do not jumper Rc or Rh. ecobee does this automatically. The R wire needs to go into the Rc terminal on your ecobee.

Heat pump (air or geothermal) with auxiliary heat

Stage 2 compressor and auxiliary heat, if applicable

NOTE: Do not jumper Rc or Rh. ecobee does this automatically. The R wire needs to go into the Rc terminal on your ecobee.

Boiler or radiant system with air handler and conventional cooling or heating

*Reversing valve for heat pumps only

Stage 2 heat and cool, if applicable

NOTE: Do not jumper Rc or Rh. ecobee does this automatically. The R wire needs to go into the Rc terminal on your ecobee.

Power Extender Kit thermostat wiring

Power Extender Kit R G Y W (at your HVAC system)

NOTE: Do not jumper Rc or Rh. ecobee does this automatically. The R wire needs to go into the Rc terminal on your ecobee.

ecobee support is here to help:

Call:
1 877 932 6233 (North America)
1 647 428 2220 (international)

Email: support@ecobee.com

Documents / Resources

References

• App Store - Apple
• Google Play
• ecobee logo

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download ecobee ecobee3 lite - Smart Thermostat Manual