part of radiator cold


Postby stevey » Sun Dec 07, 2008 7:37 pm

hi i have a vertical tubed radiator in my bathroom wich measures 1700mm x 400mm it has 9 vertical tubes on but every couple of days only the first 4 tubes get hot its ok when i bleed it but it gets more air in it a couple of days later why is this ? and is there anything i can do about it thanks for any advise stevey
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Postby plumbbob » Mon Dec 08, 2008 11:56 pm

It's not possible to be precise without system info but a plumbing design error could be the culprit.

This fault, depending where the pump is, either causes water to be forced out of the expansion pipe into the header tank or air to be drawn into the system causing the trouble you describe.

Follow this link for past topics.

http://www.diydoctor.org.uk/forums/view ... hp?t=15361
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