Step 4. Connect The Wiring - Ecobee Smart Si Installation Manual

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 the subsequent pages 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
The following diagrams show how to connect the thermostat terminals to
various HVAC equipment.
9