Combability check - nest thermostats for Braemar duct heating

[starwind]

I would like to replace my Braemar thermostats (4 pin - Spectrolink, circled red below) controller with Nest thermostats. I heard that the existing connection won't work for the Nest. 

Therefore, I plan to use the heater manual T/stats (go to Rh & W1) and hook up 24V and GND (go to C and RC) from the control board to Nest. Will this work? Refer to the circuit diagram - highlighted in yellow. 

Thanks!

[Patrick_Caezza]

Is your current thermostat controlling both heating and cooling or just heating?

Your idea is sound and should work if you only want to control the heating. You will need to figure out which of the terminals has the 24VAC on it and which doesn't. The one with power would be Rh and the one without would be W.

[aatienza]

Hey starwind,

Appreciate the help @Patrick_Caezza. I'm dropping by to ensure if everything is covered here. Feel free to let us know if you still need help.

Thanks,

Archie

[MelbaDT]

Hey there, 

Checking back in should you still have some questions about this. Let us know by replying to this thread. 

Best, 

Melba

[MelbaDT]

Hi, 

We haven't heard from you in a while so we'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community.

Best, 

Melba