When your thermostat cables hook up to terminals marked Th, Tr, and Th-Tr, they’re most most likely connecting to a fuel valve.
But, you need to locate the cables linking towards the fuel valve and follow them towards the 24VAC transformer for the heating gear to determine where your “C” connection is supposed to be. In the event that you need help with this, be sure to contact ecobee help.
Merely link the extra cable into the connection point that is common.
IF NO EXTRA is had by you WIRES
You have two options if you do not have any additional wires:
- Run a wire that is additional your thermoregulator down to your gear
- Buy and put in a Fast-Stat Common Maker
ALTERNATE SOLUTION: 24VAC PLUG-IN TRANSFORMER
A different is always to power the ecobee by having an outside plug-in transformer that is 24VAC.