Hi, this is Worcester, Bosch Group
There is a link to boiler repressurisation on our website to help you:http://www.worcester-bosch.co.uk/homeowner/products/frequently-asked-questions/boiler-repressurisation
Also you can download our user and maintenance guides from our website:http://www.worcester-bosch.co.uk/homeowner/literature/discontinued-boiler-literature/discontinued-gas-boiler-literature
Alternatively our technical team can help with enquiries on 0844 892 3366.
Hope this is of help to you.
Worcester, Bosch Group, May 2010