Help please google nest

bernhard · 3 Oct 2020

Hi,
Can anybody help me out here? I try to connect my google nest to the vaillant. Right now there is cables running into 2,3,4,5 L, N. I understand to connect L and N to the nest link. And the 2 and 3 from link to 3 and 4 is that correct or did i miss something. Should i disconect the existing thermosthat? Thanks a lot and greetings from Vienna.

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Help please google nest

bernhard

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