The new EUP11RS is the equivalent to the F11EL. It is EUP compliant with the same power output as the F11EL. It has electronic ignition and is a room sealed, fan flued water heater which means it can be installed in a wide range of locations.
The flues and fitting kits for this new heater are different from those used on the F11EL. The EUP11RS can only be flued horizontally using the RSF503 flue. This cannot be adapted in the field to fit a vertical flue. The fitting kit required is the PKE.