@John.g - thank you!
Is the 55°C the return temperature or the flow temp?
I'm assuming it cannot be the main boiler flow temp, as otherwise they would surely write the in manual that optimal temp HAS to be below 55°C.
Hi, thank you for taking the time to write to them. For some reason I cannot see the screenshot, just your uploaded filename. Can you please reshare?
I just moved into a home with an Ideal combi boiler and my %age is around 44%.