topic Re: Confirm wires are compatable in Nest Thermostats

Confirm wires are compatable

MadBeach — Tue, 08 Nov 2022 14:02:57 GMT

Can anyone confirm my wiring is compatible with my nest?

Re: Confirm wires are compatable

CoolingWizard — Tue, 08 Nov 2022 16:05:02 GMT

Your system is a heat pump with Auxiliary heating. This system is fully compatible with the nest learning thermostat third generation or a nest E learning thermostat.

Ken, The AC Cooling Wizard

Re: Confirm wires are compatable

erickhuon — Tue, 08 Nov 2022 17:44:11 GMT

Could you please also check if mine is also compatible with Nest? And if so, if just for radiators heating or also water? Would both models work? Withou any extra adaptor for number of wires conversion?

the Boiler is: Electromax Heatrea Sadia.

the current thermostat is: Danfoss TP5000Si

There are 4 wires out of the wall, but just 2 being currently used: Brown into COM port, Grey into N / O port, and the ones not connected are Black and the other has two colors: yellow and green. The port N1 is empty at the moment.

if it is compatible, which wire would go in which Nest port?

thanks a lot!

Re: Confirm wires are compatable

MadBeach — Tue, 08 Nov 2022 18:23:55 GMT

This is what Nest told me: Thank you for everyones help

Wiring configuration for the Nest Thermostat:

Aux(White) wire from the existing thermostat goes to the W terminal on Nest.

G(Green) wire from the existing thermostat goes to the G terminal on Nest.

Y(Yellow) wire from the existing thermostat goes to the Y terminal on Nest.

C(Blue) wire from the existing thermostat goes to the C terminal on Nest.

R(Red) wire from the existing thermostat goes to the R terminal on Nest.

O(Orange) wire from the existing thermostat goes to the *OB terminal on Nest.

Re: Confirm wires are compatable

CoolingWizard — Wed, 09 Nov 2022 05:48:32 GMT

@erickhuan Your thermostat appears to be a thermostat used in England. As such, if the connection points have an N port, that is operating at 230VAC. Only 24VAC systems are compatible with Nest Thermostats.

Re: Confirm wires are compatable

Jeran — Mon, 14 Nov 2022 21:50:29 GMT

Thank you for helping out on this thread, CoolingWizard!

Hey there MadBeach,

I'm just checking up on this thread, do you have any more questions or need any additional help?

Best regards,
Jeran

Re: Confirm wires are compatable

Jeran — Thu, 17 Nov 2022 21:52:45 GMT

Hey there MadBeach,

Do you have any more questions or need any additional help?

Thank you,
Jeran

Re: Confirm wires are compatable

EdwardT — Fri, 18 Nov 2022 22:41:41 GMT

Hi folks,

I'm 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