2nd paragraph - 1st indent, add: "B11, B11BS, B12, B12BS, B13, B13BS, B14, B22, B23, B32, B33, B44, B52 and B53".
2nd paragraph - 1st indent, add the following footnote
"National installation regulations may specify further requirements and may limit the modes of installation permitted in the territory of a CEN member state."
2nd paragraph - 3rd indent, delete: "hereafter referred to as "type C water heaters with fan".
4th paragraph, add the following indent:
"- type B21, B31, B41, B42, B43 and B51 water heaters."
After the 4th paragraph, add: "This standard only covers water heaters where the fan, if any, is an integral part of the appliance".