i am hoping to put some more radiators on the system, i currently have 11 rads and are thinking of replacing two single rads with doubles. will the boiler cope?

IAN, September 2010

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