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refilling a sealed heating system

sanbrafyffe · 2012-08-15 08:04:48

im gonna be filling my sealed heating system later,,,il turn on da mains at the check hose valve and go around and bleed each radiatorsn which is normal what i am not sure of is,,,,,,,,the expansion vessel is in the attic(no airvent beside it),,,do i have to pull any air out of the vessel itself by the top vave etc thanks…

15-08-2012 8:04am

#1

sanbrafyffe

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im gonna be filling my sealed heating system later,,,il turn on da mains at the check hose valve and go around and bleed each radiatorsn which is normal

what i am not sure of is,,,,,,,,the expansion vessel is in the attic(no airvent beside it),,,do i have to pull any air out of the vessel itself by the top vave etc

thanks for any help

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#2 15-08-2012 10:16am

sky6

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Posts: 1433

Hi, no the valve at the top of the expansion vessel is for filling it with air. it should be checked annually with a tyre pressure gauge. The system should have an automatic air vent generally at a high point in the system.

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