Have a Vokera Linea and need to change the expanson vessel. I know it is at the rear of the boiler and there is sufficient room above to remove when I take away the flue and remove location screws and disconnect from pipework underneath. Apart from turning off the water is there anything else I need to consider?

malcolm marsh, November 2008

The expansion vessel is the large red thing behind the boiler with a car tyre type valve on the top. You can download the manual from the vokera website for more information. Push down the central pin of the car tyre type valve, a little moisture coming out is normal, it just needs pumping up again. Only replace is a significant trickle of water comes out (I would strongly suggest you try pumping it up first anyway though- they very seldom go wrong- the just go flat and need refilling with air- it takes a lot of pumping to refill a completely flat vessel.).

c., November 2008