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Need wiring help

Art_Shotwell
Community Member

I have not purchased a Nest thermostat yet, but am looking for more precise compatibiity information before I make a purchase. My furnace, about 20 years old, and current thermostat show only  RW&G wires. 

Honeywell ThermostatHoneywell Thermostat

Looking at the motherboard, a White-Rodgers 50A65-476, has terminals for other connections, including an unused C terminal. See image...

IMG_0532.jpeg

Does that mean I could attach a wire to the C terminal at the motherboard, then at the thermostat and use a Nest? Or, do I need to call a pro installer? Thanks.

Dunno if this helps... found this in motherboard doc

23153_PROD_FILE.jpg

 

 

9 REPLIES 9

EdwardT
Community Specialist
Community Specialist

Hi Art_Shotwell,

 

Thanks for reaching out. Yes you can use one of the unused wires to the C terminal of your control board and connect it to your Nest Thermostat.

 

Thanks,

Edward

EdwardT
Community Specialist
Community Specialist

Hi Art_Shotwell,

 

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do.

 

Thanks,

Edward

Thanks, I had missed your earlier response.  I poked around online and ended up connecting to the C furnace terminal and I installed an ecobee thermostat. I decided against because I’ve read too many complaints about it. My ecobee is now one day old and seems to be working fine. Although the weather forecast it pulls up online seems to be a bit offbase. 

EdwardT
Community Specialist
Community Specialist

Hi Art_Shotwell,

 

Thanks for the update. We're sad to see you go. We hope we can make it up to you in the future. Let me know if there's anything else.

 

Thanks,

Edward
 

Jhonleanmel
Community Specialist
Community Specialist

Hi folks,

Chiming in to see if you still need assistance with this. Let us know if you have additional questions ― we'd love to help.

Best,
Mel

Thanks for following up... No, I'm all set. My ecobee is a few days old, but so far, I like it. I do appreciate that you all are here to help. 

Hey Art_Shotwell, 

Awesome — glad to hear that your issue is fixed. It looks like we can consider this one complete, so I will lock the thread shortly unless I can help out with anything else. 

Best, 
Mel

yes, lock this as complete. I didn't find a way for me to do it. Thanks, Art

Hi Art_Shotwell,

 

You're welcome. Don't hesitate to send us a message or post a new thread if you have other questions or concerns as we'd love to help.

 

Best,

Mel