C
cantaloup63
Following on from a couple of threads I've read lately about boiler pressure. Most gravity fed systems would have operated quite successfully at less that 1 bar pressure based on FE tank height above the lowest rad being well under 10m.
So why do so many recommend that a closed system be pressurised up to 1 to 1.5 bar cold?
So why do so many recommend that a closed system be pressurised up to 1 to 1.5 bar cold?