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Expansion Tank for Central Heating Boiler

Posted: Sun Nov 01, 2020 9:24 pm
by cacran
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?

Re: Expansion Tank for Central Heating Boiler

Posted: Mon Nov 02, 2020 9:29 pm
by stoneyboy
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.
Regards S