02-05-2022 08:51 AM
I have a two wire thermostat, red wire and White wire. I have 24 V on the red wire at my thermostat location. I understand the nest needs a C wire. And the C Wire is constant 24 V. Why can I not add a jumper wire from our to see at my thermostat location to give my device constant voltage on the C wire?
02-05-2022 10:07 AM
Generally speaking the common completes the circuit of 24v so it can be used to power the thermostat. The red wire in a two wire system is not a replacement for C (common). Having a C wire is recommended for a Nest thermostat. You might be able to get a Nest Learning thermostat to work in your situation. Don't jumper R to C.
02-05-2022 10:16 AM
Thanks for the fast reply I appreciate thatI have an old old system, two zones for the heater and the zones use relays. I don’t even have a circuitboard to create a C wire. I do have a two wire to the thermostats I was just trying to figure out how to give the nest device constant 24 V.
02-05-2022 10:52 AM
What is the "Nest learning thermostat"?
02-05-2022 11:07 AM
02-10-2022 10:46 PM