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cheers john just examined the new vessel the valve is hidden underneath a black plastic screw on cover. cheers for the fast response now good to go. many thanks

Im fitting an external expansion vessel to my boiler. Have read all the posts and im ready to go , one question. The elbi ex vessel i have purchased is precharged to 1.5 bar. Operating pressure in the manual says no more than 1 bar. How do i decrease the pressure and how do i know what presure...

cheers for the help managed to get the vessel repressured. failed first time but turned out to be the small schraeder valve at the top that was leaking. all good now though. chhers

cheers i take it thats an external 12L

I see your point but parts have been replaced over time not all at once and it wasnt that abrupt. new problem only appeared in the last few days

happy new year all. my vokera option boiler is on the blink again. This time after replacing heat exchanger, prv, dhw thermistor and air pressure switch the boiler loses pressure after the central heating completes its timed programme. Ive checked the overflow and its dry also have checked all...

i have a vokera option combi boiler . recently built a conservatory on the house . i added two radiators in the conservatory. after this i rebalanced the system but these rads refuse to heat up. ive done the calculations and seem to only have about 11 kw worth of rads running on the system . i...