I recently repaired a leak on a rad valve, ?
I recently repaired a leak on a rad valve, where some of the system was drained. The system is 0.7 bar cold and when fully operational it goes in the red, could there still be air in the system causing this. It's a combi boiler, glow worm, about 7 years old. Could you please advise me. Many thanks
JJ
January 2013
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