11-30-2021 01:05 AM
I am adding a C Wire adapter to my Nest Thermostat 2020. Can you confirm this wiring configuration for a 2 wire gas/heat only system: White wire with black stripe from adapter to "C" terminal, White wire from furnace to "W" terminal, White wire (no stripe) from adapter to "R" terminal and Red wire from furnace to "R" terminal as well. The "R" terminal will have 2 wires inserted. Is this correct? Thanks.
11-30-2021 06:57 AM
Yes, that should be the correct setup.
12-03-2021 07:37 PM
Did this work for you?
12-04-2021 01:01 AM
No…adding the adapter caused the thermostat to read incorrectly the temperature. It said it was about 10 degrees warmer than it actually was. I abandoned the Nest and went with an Ecobee. No problems and actually better for my application. Bery easy to talk to them and get a straight answer. Not so for me with Nest.