How big a heating system can you use the Clearflow on?
CF30 Classic: Follow the normal procedures for systems up to 12 radiators. Tackle larger systems, in sections. For example, with a twenty radiator system, close off ten radiators totally, and flush the rest of the house normally. Once done, close down all the flushed radiators, and repeat the procedure on the rest of the system. CF90 Quantum: This largely depends on the individual system, how it is configured, the bore of the pipework etc but, as a general rule, 40 radiators set over two floors; more if a single level and fewer for 3 floors. Tackle large systems in sections, tackling each section in turn.
