update:
EN 12953-6:2011 Shell Boilers - Part 6: Requirements for equipment for the boiler - EN version

EN 12953-13:2012 Shell boilers - Part 13: Operating instructions - EN version

EN 14222:2003 Stainless steel shell boilers - better quality

new linkz:

[link Point to another website Only the registered members can access]

or

[link Point to another website Only the registered members can access]