NEST Installation on Oil Heating System

[Superflo]

Guys,
Sorry to be a nuisance. I know there are several threads. I just want to confirm I'm doing the right thing.

Grant Vortex – ECO Utility 26-35 boiler (Oil Heating)

Danfoss CP 715 HW and Heating Programmer

Honeywell Analogue Thermostat

S Type Wiring System

I would like to install the 3d Gen Nest.

I want to replace my existing Programmer with NEST Heat Link, the nest link would be wired as per attached pic. (Heat Link Connections)

As you can see from this photo. I have used the existing connections from my programmer and I have also added a link from L to 2 and onto 5 on the Heat Link.

I have also identified the thermostat connections in the Wiring Centre.(See attached photo) I will remove these cables from the wiring centre and will use the red and yellow cables to connect to T1 and T2 on the Heat Link to provide power to the thermostat.

I will also add a link between between the red and yellow in the Wiring Centre. The yellow is in a terminal block with the Heating Valve and the red cable is in a terminal block with the Programmer.

Hope this makes sense. Could someone please sanity check the above. Also see attached pics of Thermostat wiring and Programmer.

Thanks

 

[hertsboilers]

I will also add a link between between the red and yellow in the Wiring Centre. The yellow is in a terminal block with the Heating Valve and the red cable is in a terminal block with the Programmer.

I will also add a link between between the red (BLACK?) and yellow in the Wiring Centre. The yellow is in a terminal block with the Heating Valve and the red cable (BLACK?) is in a terminal block with the Programmer.

 

[Superflo]

Thanks for replying, please see attached picture for clarity. Remove the Thermostat Yellow cable from T13 and the thermostat red cable from T10 and then link
T10 and T13 as shown in the pic.

Hope this makes sense.

 

[hertsboilers]

Thanks for replying, please see attached picture for clarity. Remove the Thermostat Yellow cable from T13 and the thermostat red cable from T10 and then link
T10 and T13 as shown in the pic.

Hope this makes sense.

Ok

 

[Superflo]

thanks Hertsboilers, I'm assuming everything else was OK. Im looking to install this weekend.

 

[hertsboilers]

thanks Hertsboilers, I'm assuming everything else was OK. Im looking to install this weekend.

Couldn't fully see the wiring inside the junction box, not 100% sure through.

 

[Superflo]

what do you need to verify installation plan? Many Thanks