Ecobee ecobee3 lite Installation Manual - page 16
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Warning!
If you installed the PEK in step 3, the R (or
Rc or Rh) wire must connect to the Rc terminal on the
ecobee3, or the thermostat will not power on.
Step 5. Connect wires to ecobee3
The wires from the wall should plug easily into the terminal
blocks. To release a wire, press down on the lever.
When installed correctly, the release lever of the terminal
block will lower to indicate engagement. Tug on the wires
to ensure they are engaged in the terminal.
Tip:
If you are replacing an existing thermostat, use the
stickers as a guide when inserting the wires into the
ecobee3 terminal blocks.