Stretch79
Kona Fan
Evening all,
Have a Glowworm betacom 30 boiler.
It’s rather old now and will more than likely have to look at replacing but need to resolve for now.
However, wondered if someone could give some advice please?
Having high water pressure issues on the heating side but appears to be affecting the hot water also randomly (possibly 3 way valve?)
Changed the expansion vessel to a modern equivalent. Believe pressure is set to 1Bar, this didn’t resolve it, reading up however original EV states 0.5 bar.
Bleeding the rads to lower the pressure, as when operating the heating it’s increasing beyond the 3 bar safety valve and doesn’t appear to reduce the pressure at all. Having to release pressure from the rads to bring it back down to sensible pressures. Always appears to be a tiny bit of air when bleeding.
I have rads isolated upstairs as the AC heats the rooms, so they’re just sitting there.
I did some time back but the stop leak stuff in the system to ensure no weeps are about.
Need to change the PRV within the boiler as this is not letting by when pressure reading high. Also there is an AAV on top of the boiler which may need replacing.
Would it be worth opening all the rads fully, draining down and refilling?
Ensuring no air is trapped.
https://library.sparesbase.co.uk/flipbooks/RE/gwb30_22268_t/mobile/index.html#p=2
Many thanks for any tips
Have a Glowworm betacom 30 boiler.
It’s rather old now and will more than likely have to look at replacing but need to resolve for now.
However, wondered if someone could give some advice please?
Having high water pressure issues on the heating side but appears to be affecting the hot water also randomly (possibly 3 way valve?)
Changed the expansion vessel to a modern equivalent. Believe pressure is set to 1Bar, this didn’t resolve it, reading up however original EV states 0.5 bar.
Bleeding the rads to lower the pressure, as when operating the heating it’s increasing beyond the 3 bar safety valve and doesn’t appear to reduce the pressure at all. Having to release pressure from the rads to bring it back down to sensible pressures. Always appears to be a tiny bit of air when bleeding.
I have rads isolated upstairs as the AC heats the rooms, so they’re just sitting there.
I did some time back but the stop leak stuff in the system to ensure no weeps are about.
Need to change the PRV within the boiler as this is not letting by when pressure reading high. Also there is an AAV on top of the boiler which may need replacing.
Would it be worth opening all the rads fully, draining down and refilling?
Ensuring no air is trapped.
https://library.sparesbase.co.uk/flipbooks/RE/gwb30_22268_t/mobile/index.html#p=2
Many thanks for any tips
