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  1. R

    Megaflow over-full - need to reduce pressure

    Again, thank you - could not possibly have asked for a speedier or indeed more helpful response - v grateful indeed :D
  2. R

    Megaflow over-full - need to reduce pressure

    Dear powell30, Thank you very much indeed for the swift response. Now to prove my ignorance yet further.... the expansion vessel charge - that's the so-called 'bubble' - right? When I follow the instructions for "air volume re-charge" writ large on the Megaflo itself, this is nothing to do with...
  3. R

    Megaflow over-full - need to reduce pressure

    First EVER post - so please play nicely. Professionally installed Megaflo 250l unvented system 12 months ago in conjunction with loft conversion. Gauge (on red expansion tank) used to read around 1 bar. Suddenly, and with no alterations to the system (no changes whatsoever) it's circa 2.8 bar...
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