Nest Installation Question

[littlecharva]

Hi,

I've ordered a Nest Thermostat and I'm planning on installing it myself. I'm pretty comfortable getting stuck in with these things, and have replaced various components on the boiler (electric side only, I'm not crazy!), washing machine and dishwasher before.

I've got the service manual for my boiler (Vokera Linea 24) and it's pretty straight forward where to connect the four wires (L, N, 2 and 3).

My only concern is that the boiler has a sticker outside of the junction box labelled "All connections are 240v". Is that acceptable for connections 2 and 3 on the Heat Link?

Thanks,
Anthony

 

[muggles]

Yes, Nest can take 240v

 

[littlecharva]

Excellent, thanks for your response. Am I right in assuming that there's simply a relay switch between 2 and 3, so it's actually a separately isolated circuit and could carry any voltage?

 

[muggles]

Yes, 2-3 can also be low-voltage or volt-free.

 

[littlecharva]

Thanks again. The boiler doesn't have any connections for hot water control, but I'm okay with that.

Once it's installed, should I leave the switch on my CH programmer to on or off?

 

[muggles]

If you're wiring it direct to your boiler, your programmer should be bypassed so it won't matter what you do with the controls

 

[littlecharva]

The service manual for the boiler has schematics for installing both a programmer and a thermostat, so I was planning on wiring both. Although thinking about it, I probably won't have much use for the programmer once I have a thermostat installed. Would you recommend removing the programmer?

 

[muggles]

Yes, ditch the programmer. It'll be absolutely useless once you have a Nest

 

[littlecharva]

Excellent, will do. Thanks for all your help muggles - much appreciated.

 

[Steven Powell]

Excellent, will do. Thanks for all your help muggles - much appreciated.

Sorry for hijacking thread but i have a Vokera Linea 24 and was looking to add a Nest Thermostat.

I have a Switchmaster 300 timer, can i just do away with that? do i take the wires going to that and use them for the Nest Heat Link?


Cheers,
Steven

 

[littlecharva]

Hi Steven,

Yeah, that's EXACTLY what I did.

Good luck - it's pretty straightforward.

Anthony

 

[Steven Powell]

Cheers mate

 

[Steven Powell]

Hi Steven,

Yeah, that's EXACTLY what I did.

Good luck - it's pretty straightforward.

Anthony

Sorry to bother you mate, from to boiler what wires do you have going to heat link?

Should I have a wire from each of the ta blocks to nest link 1 and 3?

Cheers

 

[littlecharva]

From both of the TA blocks to Nest Link 2 and 3. Make sure you remove the joining wire from "TA" to "=" if there's one there. Obviously you also need the wires from N to N and L to L too.

 

[Steven Powell]

Bingo, we have heat.

Thanks again mate, very much appreciated

Steve