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Nest thermostat compatibility

drayton
Community Member
20 REPLIES 20

Jenelyn_O
Community Specialist
Community Specialist

Hi drayton,

 

Thanks for posting in the Google Nest Community forum. I’d love to help.

 

Your system has a 120 VAC that is considered as a high voltage system, which isn't compatible with the Nest Thermostats. In some cases, it is possible to make a high voltage system Nest-compatible. Contact a local HVAC professional and have them install a step down transformer to 20 - 30 V.

 

You can check this support article for more information.

 

Best,

Jenelyn

drayton
Community Member

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drayton
Community Member

Smartest solutions vt1000. I have gas heat electric a/c  I see a white module that says 120 vac on it . Not sure if compatible also have  red wire going to two different locations as you see by picture 

Jenelyn_O
Community Specialist
Community Specialist

Hi drayton,

 

We’ve duplicated your thread to the main one here. You’ll receive all updates on this issue on the main thread and we recommend updating and checking this thread when needed.

 

Best,

Jenelyn

Jake
Community Specialist
Community Specialist

Hey there,

 

I wanted to check in and see if you are still in need of any help. Please let me know, as I would be happy to assist, and answer any questions you may have.

Best regards,
Jake

drayton
Community Member

Yes, my thermostat again I have a VT 1000 talking thermostat, from smart way solutions Inc. I don’t know if somehow you can look that model up and look at my wiring and shift and assist further for you but looking on the user guide as a 24 VAC on there I think the white thing I’ll see you in one of the pictures this posted might be a relay ????. I tried to post a picture of the user guide, showing the wiring diagram. Have a problem trying to do that. I have a gas heat electric AC for wires with the red jumper wire. I think again if you could look up the VT 1000 or lighter units 2000 3000 might help you solve my problem. Just want to make sure I can use the nest learning thermostat if possible. Any help would be great for me appreciate thank you

drayton
Community Member

s, my thermostat again I have a VT 1000 talking thermostat, from smart way solutions Inc. I don’t know if somehow you can look that model up and look at my wiring and shift and assist further for you but looking on the user guide as a 24 VAC on there I think the white thing I’ll see you in one of the pictures this posted might be a relay ????. I tried to post a picture of the user guide, showing the wiring diagram. Have a problem trying to do that. I have a gas heat electric AC for wires with the red jumper wire. I think again if you could look up the VT 1000 or lighter units 2000 3000 might help you solve my problem. Just want to make sure I can use the nest learning thermostat if possible. Any help would be great for me appreciate thank you

drayton
Community Member

drayton_1-1680551154343.jpeg

 

drayton
Community Member

drayton_2-1680551228411.jpeg

 

zoeuvre
Community Specialist
Community Specialist

Hi drayton,

 

I wanted to check if you are still in need of any help. Please let me know, as I would be happy to assist, and answer any questions you may have.

 

I appreciate the help, Jake and Jenelyn_O. 

 

Thanks,

Zoe

drayton
Community Member

yes looking at all my pictures including picture with manual , still trying  to figure out if i can use a nest learning thermostat.

zoeuvre
Community Specialist
Community Specialist

Hi there, 

 

Thanks for getting back to us. Yes, you can use the Nest Learning Thermostat 3rd generation for your system however, we highly recommend you contact a local HVAC professional and have them install a step down transformer to 20 - 30 V. 

 

Regards, 

Zoe 

zoeuvre
Community Specialist
Community Specialist

Hi folks, 

 

@drayton, I wanted to check and see if you managed to see the information I shared. Please let me know if you have any questions from here. I would be happy to assist and make sure you are good to go.

 

Best,

Zoe 

Markjosephp
Community Specialist
Community Specialist

Hello folks,

 

Thanks for the assist here, Zoe.

 

@drayton, It has been a few days since your last reply, and we're going to lock the thread within 24 hours. If you have any questions, please feel free to create a new post.

Regards,

Mark

Thanks everybody for the input.

 looking at one of the pictures here of my instruction manual  i see 24 v  in drawing,  but am still confused about the one picture with the white thing that says 120 v that is plugged into the  thermostat cover. Dont want to have to pay someone to put a stepdown on , so guess i will just forget the google learning thermostat and just keep what i have.

Markjosephp
Community Specialist
Community Specialist

Hi drayton,

 

I understand. But it appears to be a manual from your thermostat, and the Nest Thermostats don't support high-voltage systems, which might lead to an overcurrent. To be sure, could you please tell us the make and model of your HVAC system?

 

Regards,

Mark

Goodman outside a/c unit , inside gas furnace is a xenon. XF80(45-115)  gas fired warm air furnace  the thermostat is a  smart solutions VT1000  talking thermostat 

zoeuvre
Community Specialist
Community Specialist

Hello drayton,
 

It’s me again. I know it’s been a while, and I’m sorry for the delayed response. 


Since we don’t support high voltage systems, we highly recommend you contact a local HVAC professional and have them install a step down transformer to 20 - 30 V so your system can work with our Nest Learning Thermostat 3rd generation. 

 

Thanks for your help, Mark. 
 

Best,

Zoe

Markjosephp
Community Specialist
Community Specialist

Hi drayton,

 

I wanted to ensure that everything was covered here.
 

You might have additional questions. Let us know so we can assist you right away.

 

Regards,

Mark

Hello drayton,

 

It has been a few days since your last reply, and we're going to lock the thread within 24 hours. If you have any questions, please feel free to create a new post.

Thanks,

Mark