Will the Nest Power Connector damage my old (analog) thermostats?

[Paul-A-D]

Hello All.

I'm new here. I've got a natural gas (FHW) heating-only system that I'm trying to install Nest thermostat Es in. I have no C wire, so I've ordered the Nest Power Connector. I've currently got 3 zones with old (manual/analog) thermostats on each of the three zones.

My question is this: If I leave one of my old manual/analog thermostats installed, and install the Nest Power Connector (for my two new Nest E), will the power connector damage the old (manual/analog) thermostat?

[Jhonleanmel]

Hi Paul-A-D,

Thanks for posting and sorry for the delay.

I suggest reaching out to a local pro to install your Nest Thermostat safely as your system needs a technician to make sure it works properly. This is also for your safety.

Best,

Mel

[Jhonleanmel]

Hey Paul-A-D,

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

Best, 
Mel

[Paul-A-D]

Had a professional installer here all day today (for the second time). I've now tried three different Nest Es (T4000ES) and three different Nest GA0202083-USs. Both models are supposed to work with a 2-wire, heat-only system using the Nest power connectors. They simply do not work!! They do not power up at all. We verified that we have 24V at the thermostat wires (coming from the Nest power connectors) and they simply don't power up at all. I've spent hundreds of dollars on two different model Nest thermostats only to find out they're worthless.  I'm not about to run a new common wire to three different floors in my house, but if I did, I would go with the Honeywell thermostats instead of these things. 

If you've got a 2-wire, heat-only system with a Taco SR503 switching relay, Nest thermostats WILL NOT WORK.

[Jhonleanmel]

Hi Paul-A-D,

I'm sorry to hear that you're still having an issue with your Nest Power connector. We'd like to take a deeper look into this — could you fill out this form and let us know once you're done?

Thanks,
Mel

[Jhonleanmel]

Hey there Paul-A-D, 

Checking back in — have you had the chance to fill out the form?

Best, 
Mel

[Markjosephp]

Hello there,

Thanks for helping, Mel,

@Paul-A-D, I wanted to see if you still needed help. Please let us know if you were able to fill out the form so we can assist you right away.

Regards,

Mark

[Markjosephp]

Hello Paul-A-D,

I'm checking in to make sure that you've seen our response. If you have any further questions or concerns, please let us know before we lock this thread in 24 hours.

Regards,

Mark

[Paul-A-D]

Your response was to ask me to fill out a form and explain the same thing that I've already explained on this forum. Why would I do that? Is filling out a form going to magically get me an answer that you can't offer here on the forum?

[Markjosephp]

Hi there,

I understand that this step is a little out of the way, but it's a great way to check for more options and discuss this directly with our upper team so you can get extensive assistance from them.

Thanks,

Mark

[Markjosephp]

Hello Paul-A-D,

I wanted to see if you still needed help. Please let us know if you have any other questions or concerns.

Regards,

Mark

[Markjosephp]

Hi there,

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

Thanks,

Mark