Danfoss 103 mechanical timer to FP75 programmer

[tazz]

Best idea, then its clear

 

[Leesparkykent]

Best idea, then its clear

I think so, boiler could have volt free contacts and the old time-clock could be switching a relay for all we know.

 

[bjl]

thanks for that it is a potterton 80 combi

 

[Leesparkykent]

Yes this boiler requires a 230v SL, so number 4 on new programmer connects to terminal 7 in boiler.