- Posted on
Mon Apr 22, 2024 7:51 pm
-
Radjin
offline
-
- Posts: 151
- Joined: May 13, 2015
I made an edit on the prior post regarding wireless devices, in case you plan to monitor the utility like I did.
Yes, the C wire and likely the HVAC unit might need to be disconnected from the internal source. Check the wiring diagram or an expert on your system to be sure two sources won’t cause issues. I have never used an external source but I know there are kits for thermostats that require it and a wire was never ran. Beware, modern thermostats often use communication rather than specific wires to perform functions.
It's not rocket science...