Ecobee3 Lite Ecobee Thermostat Wiring Diagram

Are you planning to install a new Ecobee3 Lite thermostat in your home, but are not sure how to wire it properly? Look no further, as we have created a comprehensive guide to walk you through the process of wiring your Ecobee3 Lite thermostat. This article will cover everything you need to know, including wiring diagrams, common questions, and tips for a successful installation.

Wiring Diagram

Before we get into the nuts and bolts of how to properly wire your Ecobee3 Lite thermostat, let’s take a look at the wiring diagram. The Ecobee3 Lite has a total of 6 terminals, which are labelled as follows:

Terminal Description
Rc 24VAC power from cooling transformer
Rh 24VAC power from heating transformer
Y1 Compressor relay
G Fan relay
C 24VAC common wire
W1 Heat relay

With the wiring diagram in mind, we can now move on to the process of wiring your Ecobee3 Lite thermostat.

How to Wire Your Ecobee3 Lite Thermostat

Wiring your Ecobee3 Lite thermostat is a fairly straightforward process, but it does require some basic electrical knowledge. It is important to follow the wiring diagram and instructions carefully to ensure a successful installation. Here is a step-by-step guide:

Step 1: Turn Off Power

Before starting the wiring process, turn off power to your HVAC system at the breaker box to avoid any electrical shock.

Step 2: Remove Old Thermostat

If you have an old thermostat, remove it from the wall and disconnect the wires. Make sure to label each wire according to the terminal it was connected to.

Step 3: Mount the Ecobee3 Lite Thermostat

Mount the Ecobee3 Lite thermostat onto the wall using the provided mounting plate and screws.

Step 4: Connect the Wires

Connect the wires from your HVAC system to the Ecobee3 Lite thermostat according to the wiring diagram. Use wire connectors to secure the wires in place.

Step 5: Connect the C-Wire

If your HVAC system requires a common wire (C-wire) to power the thermostat, connect it to the C terminal on the Ecobee3 Lite thermostat. If you do not have a C-wire, you may need to use the PEK (Power Extender Kit) that comes with the thermostat.

Step 6: Turn on Power

After completing the wiring process, turn on power to your HVAC system at the breaker box.

FAQ

Q: What is the difference between the Ecobee3 and Ecobee3 Lite thermostat?

A: The main difference between the Ecobee3 and Ecobee3 Lite thermostat is that the Ecobee3 has a touch screen interface and comes with a remote sensor, while the Ecobee3 Lite has a non-touch screen interface and does not come with a remote sensor. The Ecobee3 also has additional features and capabilities, such as support for humidifiers, dehumidifiers, and ventilators.

Q: Do I need a C-wire to install the Ecobee3 Lite thermostat?

A: A C-wire is not required for the Ecobee3 Lite thermostat, but it is recommended for optimal performance. If you do not have a C-wire, you may need to use the PEK (Power Extender Kit) that comes with the thermostat.

Q: Can I install the Ecobee3 Lite thermostat myself?

A: Yes, the Ecobee3 Lite thermostat is designed for easy installation and can be done by most homeowners. However, it is important to follow the wiring diagram and instructions carefully to ensure a successful installation.

Q: What HVAC systems are compatible with the Ecobee3 Lite thermostat?

A: The Ecobee3 Lite thermostat is compatible with most 24VAC HVAC systems, including gas, oil, and electric systems. It is also compatible with heat pumps, dual fuel systems, and multi-stage systems.

Tips for a Successful Installation

Here are some tips to keep in mind when installing your Ecobee3 Lite thermostat:

  • Turn off power to your HVAC system at the breaker box before starting the installation.
  • Label each wire according to the terminal it was connected to before removing the old thermostat.
  • Follow the wiring diagram and instructions carefully to ensure a successful installation.
  • If you have any questions or concerns, consult the Ecobee3 Lite installation manual or contact customer support.

Conclusion

Installing a new Ecobee3 Lite thermostat can be a great way to improve the efficiency and comfort of your home’s HVAC system. By following the wiring diagram and instructions carefully, and using the tips and FAQ provided in this article, you should be able to install your Ecobee3 Lite thermostat with ease.