cancel
Showing results for 
Search instead for 
Did you mean: 
Replies are disabled for this topic. Start a new one or visit our Help Center.

Google Nest Thermostat

nt
Community Member

I bought three Google Nest Thermostat for  three zone locations each floor.  My bioler run very efficient only if I keep same temperature 24x7 during cold season.

How can I achieve this action item.

I have basic system where, there three wires, but only used two, Red and White.  Can I able to use green, which is spare, not connected any old thermostat, use as C connection and if so how.

Thank you in advance.

 

2 REPLIES 2

Jake
Community Specialist
Community Specialist

Hey nt,

 

Sorry for the late reply. I wanted to follow up and ensure you are good to go. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further. 

Best regards,
Jake

nt
Community Member
Nothing is resolved.  Anyway you look at it, it required C COMMON Wire connections.
I have three Nest Thermostat for each zone, which is on each floor.
I have a TACO ZONE CONTROLLER Model#ZVC404, which does not have C Common wire connection at all as per the diagram on the metal box.  
Called TACO Customer Service and they said that you require special power supply with C Common wire due three NEST will use lots of power, which does.  Nest Thermostat on each floor complain that low power and need stable power.
 
I also talked to experts and they all hate the NEST Thermostat due to C Common Wire problems.  Everyone complains on YouTube also.  
 
I am shocked to see this problem with a very popular product and not yet fixed.   Google NEST must include stable power built in or an easy household person can plug it in.  Keep it simple.
 
So far I am regretting and getting run around.
 
If you can help to resolve this issue, otherwise I may have to return them.