he new Morco Primo 6 Litre water heater is a direct replacement for the D61B and D61E. The flue diameter is the same, so if you are replacing a D61 you can use the existing flue. There is an installation/conversion guide in the troubleshooting section of this website.
The MP6 has a piezo ignition and is not available with an electronic ignition.
The MPFK fitting/conversion kit will be required in order to fit the water heater in all circumstances. These can be found in the related items section below. If you require a 10mm fitting kit, please order the MPFK10 instead.