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Expansion Tank for Central Heating Boiler

Postby cacran » Sun Nov 01, 2020 9:24 pm

I have just bought an Expansion Tank from Toolstation.
It says that it is pressurised to 1.5 bar. The one in my Bosch System says it is .75 bar.
Should I reset the new tank to .75 or will it be okay to fit the Tank as it came 1.5 bar?
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Postby stoneyboy » Mon Nov 02, 2020 9:29 pm

Hi cacran
If your system runs at 0.75 bar then the pressure vessel should also be at this pressure to allow for maximum expansion/contraction.
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