Quote:
Originally Posted by Morecambe Ex Pat
Thanks for putting me right on that one - you learn something new every day.
I would have thought that the heating needed to be on to ensure the system had enough pressure to force the air out.
I was folowing the advice given by the plumber who installed ours. I asked him to show me how to bleed them for future reference. He did it with the heating on.
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Many can be bled with the heating on, especially with combi boilers (though savio dont rate as a boiler in my book, more a box of scrap), but some older systems will draw air IN to the system if the pump is running, this is usually down to poor design of the system.