Help! Fitting Nest 3rd Generation

[Lightyear87]

Hi Guys,

I am after some advise on installing a Nest Heatlink.

Below is a photo of my current wires that go into my Danfoss thermostat that i will be replacing.

Am I correct in thinking that i should wire it up as follows -

3 neutral wires go into Nest neutral.
2 live wires go into Nest live.
The wire that is currently in number 3 (hot water on) goes into Nest 6
The wire that is currently in number 4 (Heating on) goes into Nest 3
I then have to run a wire from live to 2 on the nest and then from 2 to 5. (commons)
But what do I do with the Earth Wires?

Wires 5 and 6 in the Danfoss are for the sensor which I will use for the Nest thermostat.

Any help would be much appreciated.

Cheers

Chris

 

[stem]

That's about it. Usually folks miss the live link to 2 & 5

The earth wires go in the earth terminal, third from the right

 

[Lightyear87]

That's about it. Usually folks miss the live link to 2 & 5

The earth wires go in the earth terminal, third from the right

View attachment 131002

Does it mater what cable i use to connect live to 2 & 5?

many Thanks

 

[stem]

It would be correct to use wire with brown insulation to show that they are lives. 0.5mm2 or 0.75 mm2 would be adequate.