I have a powermax 155 boiler and I have removed 2 radiators from upstairs. I have been reading the book on how to refill the system and what is in the book bears no relation to my boiler! As there are no obvious ways to refill the the system I was wondering if anyone out there could help. How do I know when the correct pressure has been reached as there doesn't appear to be a gauge. Further more, the burner light has now gone out and I'm starting to shiver! Could this be due to low system pressure? [email protected][/url][/wiki]