Repressurise potterton baxi boiler no filling loop 

How to repressurise your boiler if you don't have a refilling loop/kit fitted. This I expect is now common on a lot of new build houses. It doesn't tell you about it in the user guide, but you might have been shown how to do it when you moved in but now forgotten. You may need to repressurise again after you have bled all the radiators. This will save you alot of money in calling out a plumber or buying a refilling loop unnecessarily.