Google nest wiring to Logic combi C35

Damian6 — Sat, 13 Jul 2024 14:38:03 GMT

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!

topic Google nest wiring to Logic combi C35 in Nest Thermostats

Google nest wiring to Logic combi C35