Non vented issues

David2749 · 2024-09-28T20:44:19+0100

I have4 an issue with my non vented tank . When I run the hot water I get a very loud noise from the around the pressure reduction valve. It happens intermittently. I was told that the water pressure and the expansion tank should be balanced . I've checked the water pressure which is 3.8 bar and the tank is 3 bar.
Any idea

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Non vented issues

David2749

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