Replacing failed NEST Thermostat with new Nest Thermostat, wiring question?

[Calli74]

My Nest learning Thermostat stopped connecting to wifi about a year ago, then more recently started flashing red.  I pulled it off and manually charged it - it came back only for a short time and shut down again.  I purchased a new Nest Thermostat today - and although similar - this one has accessible batteries, but the wiring seems to be a bit different.   Was hoping to clarify where I should put what.   The current Nest has is for heat only and it's a Forced Hot Water system.   I have two wires.  White wire going to W1 and red wire going to Rc.  The new nest doesn't have the same options to use.   I have a left column with Y, C, W and a right column with G, R, *OB

I just want to be sure I use the correct ones.  Leaning towards the W & R.   

[Serialc00kie]

Hello Calli74,

You must connect the W1 wire to the W terminal and the RC wire to the R terminal according to the wiring you currently have.

[Calli74]

Apparently I also need to add a Common power wire as well.   Ugh!  Prob swap this out for another Learning Thermostat and save the time and trouble of adding the wire. 

[Serialc00kie]

Hello,

I do understand where you are coming from. When it comes to the Nest Thermostat, it typically requests a common wire on some systems, especially if it only has a heating system. 

[Calli74]

Thanks for the help.   I ended up returning the Google Nest Thermostat and purchasing the more expensive Nest Learning Thermostat as it was more cost effective than hiring an electrician to run a common wire for my Heating System only.   Thanks for

the insight though!  Cheers.  

[Jake]

Hey there,

I wanted to check in with you, and see if you had any questions from here. Please let me know, as I would be happy to review.

Best regards,

Jake

[Jake]

Hey there,

I wanted to check in, and let you know that I will be locking the thread in 24 hours.

Best regards,

Jake

[Jeran]

Hey there Calli74,

I'm just checking up on this thread, and I'm glad you were able to get this issue resolved. In that case, do you have any more questions or need any additional help? 

Thank you for helping out on this thread, Serialc00kie!

Best regards,
Jeran