Installing the SMART Si Thermostat

INSTALLING THE SMART Si THERMOSTAT

There are 5 steps to install the ecobee Smart Si thermostat:

  • Step 1. Power Off HVAC Equipment
  • Step 2. Remove Existing Thermostat
  • Step 3. Install the Smart Si Thermostat
  • Step 4. Connect the Wiring
  • Step 5. Power On HVAC Equipment

 

Step 1. Power Off HVAC Equipment

Before disconnecting the existing thermostat, or installing the Smart Si thermostat, disconnect the power to the heating and air conditioning equipment.

 

Step 2. Remove Existing Thermostat

Disconnect the wires to the existing thermostat and remove it from the wall (if you are installing the Smart Si thermostat in the same location).

 

Step 3. Install the Smart Si Thermostat

The ideal location for the thermostat is approximately 5 ft (1.5 m) above floor level in the main living area.

Do not install the thermostat:

  • Close to sources of heat such as incandescent lights
  • Near supply heating/cooling sources
  • In direct sunlight
  • On exterior, non-insulated or poorly insulated walls
  • In the kitchen or other areas of potentially high heat and/or humidity
  • In an area that could restrict air flow

To install the thermostat: 

  1.  Gently separate the backplate from the thermostat.
  2. Place the thermostat backplate on the wall. Make sure that any existing wires can be inserted through the opening for the wiring.
  3. Using the backplate as a template, mark the location of the mounting holes on the wall as shown below.

 

backpanel.jpg

 

The solid color indicates mounting holes
  1. Move the backplate out of the way and make holes where indicated in step 3. The mounting holes can accommodate a #6 pan-head screw. It is recommended to use the included fasteners to ensure proper fitting of the front housing.
  2. Use the included drywall plugs (or other suitable anchors) to ensure the thermostat can be mounted securely to the wall.
  3. Fasten the backplate to the wall using the screws provided (or other suitable screws).

 

Step 4. Connect the Wiring

You need to use  low-voltage cable to connect the thermostat to the HVAC equipment. Check the wiring diagrams on pages 8 to 17 for the number of wires required.

Note: There is a factory installed jumper between R/H and R/C. Ensure any unused wires do not have exposed bare copper conductors.

To connect the thermostat to the  equipment:

  1. Connect the wires as shown in the wiring diagrams.
  2. Attach the Smart Si thermostat to the backplate. Ensure that the pins on the thermostat align with the terminal block on the backplate.

 Wiring Diagrams

Refer to the following diagrams (in the diagrams section: http://help.ecobee.com/forums/20778692-wiring-diagrams-smart-si) showing how to connect the thermostat terminals to various HVAC equipment.

 

Step 5. Power On HVAC Equipment

After you’ve completed the wiring, you can apply power to the heating and air conditioning equipment. The Smart Si thermostat receives power from the equipment and will automatically power on.