how many rads can a ff330 boiler cope with?

is it an ideal classic ff330?

if so it can cope with about 9kW of heat output.
can't say a specific number of rads as it depends on their size / kW rating.

i'd say you're already stretched a bit thin with 11 rads even if they are all small, as out of your 9kW, 3kW is required for your hot water cylinder.

Ian
September 2010