Nest thermostat with Buderus logano 125

[Sanderrrr]

I Cant figure out how to connect my old Buderus logano G125 with the nest.

Any advice would bé much appreciated.

[Patrick_Caezza]

@Sanderrrr 

Where are you located? in the US/Canada or the UK/Europe area?

[Han-VdC]

We have the same problem. Already tried with the help of someone who previously connected one with a different system and he couldn't figure it out. Called multiple plumbers/HVAC, no one wants to touch it 😅

Located in Belgium.

[Patrick_Caezza]

@Han-VdC 

It sounds like this boiler needs a Heat Link which I know nothing about.