I have another post with this question (Adding a C wire) but thought I'd clear up any confusion with this new post and I'm adding a diagram also. The diagram shows my current thermostat wiring and not the new Ecobee one.
I cannot add a new thermostat wire, which would be the best way, so I'm going to go with the Ecobee's PEK module. Just wondering where in the line I should add it.
The manual says to add the PEK at the control board on the air handler but I have some wire nuts along the way that connect other things. So my options are:
Connect the PEK at the control board but then the EZ trap and condensate pump will go through the PEK wiring module at R. Also, the Y wire will have the AC white wire connected to the PEK.
Connect the PEK where the wire nuts are but I will have to connect the C wire from the PEK to the blue C wire, white Humidifier wire and red AC wire. Is that ok to do?
I'm thinking 2 is the better location for the PEK but let me know your thoughts. Also, if I were to use a 24 volt transformer, could I just connect C at the thermostat to one of the screws on the transformer? Or would I have to connect the other screw to something?
Thanks for any help.