Changing Siemens thermostat to honeywell (different wiring codes)

[Dahmashawi]

HiI'm changing my old Siemens thermostat to a new honeywell one however i'm struggling with the coding as it is different. can someone help? I have added the images for the old wiring and the new one and what i could match from the manuals however not sure where to put the N wires and the yellow wire in B2 and M

 

[EFLImpudence]

I am not familiar with the system but -

4 is obviously neutral, and

As for the yellow, it just bridges B2 and M - what are they for?


The model numbers would help.

 

[Dahmashawi]

Hi Model numbers are Siemens RDF10 and the new thermostat is Honeywell T6861. the thing is in the old siemens there are two Neutral (white and blue) but only one N in the new thermostat

 

[Dahmashawi]

Here are the manuals too