Boiler help

neilmcl

RelievedSheff said:

The Potterton Promax Ultra is a condensing boiler so at the temperature it is set it will never drop into condensing mode so will never run at it's most efficient. The return flow need to be at around 55 degrees to get the boiler into condensing mode which means that your boiler temperature needs to be somewhere around 60 degrees depending on how large you system is and how it is set up. You will need to have a play with it when you next put the heating on.

The recommended CH temperature for most combi boiler manufacturers is 75℃ (60℃ for hot water).