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Google nest wiring to Logic combi C35

Damian6
Community Member

Hello everyone,

I have been trying to find the answer to my question online for hours, but couldn't find a similar connection to mine and I want to be sure that I am connecting it correctly, so I thought I would ask the question here.

 

I have a Logic Combi boiler C35, there is no OpenTherm connection in this boiler, so I need to connect it through the normal on/off option.

 

I have taken a photo of the wiring from behind the control unit : 

https://drive.google.com/file/d/19GhaYkycydKLEKKYoqZkDypp7LQsfwH_/view?usp=drive_link

I found a similar connection online and just wanted to double-check if this would be the correct way of wiring it:

https://drive.google.com/file/d/10N8yLOLZvd0CI5SRAZosxEufIrj7q0J6/view?usp=drive_link

 

So basically I'd connect Live and Neutral to L and N on the heat link, then link from Live to number 2 and last wire to number 3.

Do I also need to connect the Earth wires to a heat link? (I am only asking as on the screenshot there are no Earth wires connected to a heat link)

And obviously, the two last wires from T1 and T2 would go to the thermostat itself.

Many thanks! 

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