topic Re: replacing a Honeywell Chronotherm with a Nest in Nest Thermostats

replacing a Honeywell Chronotherm with a Nest

JBliss — Wed, 22 Jun 2022 22:00:49 GMT

I have a Honeywell Chronotherm Thermostat with 4 wires coming out of the wall. It controls both the heat and air conditioning.

White going to W post

Blue going to Y post

Green going to G post

Red going first to Rc post then continuing to the Rh post

Nest instructions say I do not need a jumper but I am not sure which Post I should put the red wire to Rc or Rh

Any help would be appreciated. Jon

Re: replacing a Honeywell Chronotherm with a Nest

EdwardT — Tue, 28 Jun 2022 19:38:56 GMT

Hi JBliss,

Thanks for reaching out. You can put the red wire to either Rc or Rh and you don't need to put a jumper because the Nest Thermostat will use it's internal jumper between the Rh and Rc connectors. The Nest Learning Thermostat will automatically use this internal jumper if your system needs it.

Thanks,

Edward

Re: replacing a Honeywell Chronotherm with a Nest

aatienza — Fri, 01 Jul 2022 23:07:57 GMT

Hey JBliss,

I wanted to follow up and see if you are still in need of any help? 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.

Thanks,

Archie

Re: replacing a Honeywell Chronotherm with a Nest

EdwardT — Sun, 03 Jul 2022 16:38:44 GMT

Hi JBliss,

Just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

Thanks,

Edward