Replacing Heating Controller With Nest Heat Link

[Mike CoverUps]

Hi,

I'm installing a nest in a vicarage where we'll only be temporarily (3-6 years) so hoping to be able to take it with us when we go, and reinstall the original timer.

I've had a look at the wiring to the heating controller, and it seems to my mind that this would be the most sensible place to put the heat link (ie. Replacing the heating timer, pictured below). Of course we'd then need to set the main thermostat so that it always was always triggering "on" (ie. Set it to max/30°C)




The black wires in 3 and 4 here I think must correspond with 3 and 6 on the nest heat link below.


So my question is, do I need to loop from the live/neutral to 2 and 5?

Does this all make sense, or am I missing anything?

Many thanks in advance!

Mike

 

[Sparkie30]

Yeah you correct loop From L to 2 and 5.

 

[Mike CoverUps]

Many thanks!

 

[Lee42]

Remember the nest thermostat needs wiring back to heat link as it is 12v
Unless u are not putting it in old thermostat position, and are plugging it in somewhere

 

[Mike CoverUps]

Thanks. I plan to plug the thermostat in separately a have it on a stand.

 

[diditrain]

Terminal 3 on your old clock backplate is hot water on and 4 is for heat

 

[Mike CoverUps]

Yes, you're right diditrain - good spot! I'll label them up before I remove them.

 

[Soulsurfer]

Brilliant piece of kit the nest gear, just put in loads of them hard wired and also on stand via nest weave and it works flawlessly.