Connect to LMU64

[akula3]

How to connect? Just instead of RRG considering +/- ?

[fredlcore]

Read the manual first, and if you still have questions, please be more specific. To connect to LMU64, you need a OCI420 in order to connect via LPB. The room unit uses OpenTherm which is completely different from BSB/LPB.

[akula3]

I red the manual. And I found a description only for upgrade the boiler with OCI420 to be able to comminicate via LPB protocol.
I do not want to invest in OCI420, but want to use the PPS protocol. It seems, it is supported for LMU64:

I found in the manual also example pictures for different controllers, but not for LMU64, just this description:

But I can't find the mentioned pins on my LMU64.

[1coderookie]

Thanks for that information, that is an error in the description, the LMU64 does NOT have a PPS! I just fixed it.
As you can see in the special chapter about LMU64
https://1coderookie.github.io/BSB-LPB-LAN_EN/chap10.html#1024-note-special-case-lmu54lmu64-controllers
this controller needs an OCI420 to retrofit LPB for being able to use it with the BSB-LAN adapter.