cancel
Showing results for 
Search instead for 
Did you mean: 

Need help whit instalation

cuconio
Community Member

Hi I’m trying to install my nest thermostat, but my old one only has two wires Here’s a pic. It’s a ct30A1005 date code 1723 it’s not digital. I need help whit this installation. Thanks

97E5EAE5-10E9-4E37-8D15-881B63E48616.jpeg

13277170-A1F1-4479-878A-263C9E578C8E.jpeg

6 REPLIES 6

Houptee
Silver Product Expert
Silver Product Expert

The wires will go to Rh and W1

But you need a extra wire for C common to give the Nest 24v AC power.

Can you pull a new Thermostat wire up the wall from the system with 5 colored wires is it visible where the old wire comes from?

And the heating system needs a C terminal on the furnace to connect the (normally use blue) wire to C.

Follow the wire back to the system and take a pic of where they connect to the heating system so we can determine if you have a way to connect a C wire.


Houptee -- NJ Master HVAC Licensed Contractor

EdwardT
Community Specialist
Community Specialist

Hi folks,

 

@Houptee, thanks for the help!

 

@cuconio, how's it going with your Nest Thermostat? Still need our help?

 

Thanks,

Edward

cuconio
Community Member

yea I finally got it to work. I installed the c wire to the system and somehow the nest thermostat keep sayin that there no power on the c wire. so I bought a 24 volt transformer and yes! worked perfect. but thanks for asking I appreciated.

EdwardT
Community Specialist
Community Specialist

Hi cuconio,

 

Thanks for the update! I'm glad to hear that you were able to get it working. Please observe it for now and let us know if anything comes up.

 

Thanks,

Edward

EdwardT
Community Specialist
Community Specialist

Hey cuconio,

 

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

EdwardT
Community Specialist
Community Specialist

Hi cuconio,

 

I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

 

Thanks,

Edward