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hi mate, the system you have, i believe has 28 mm gravity fed hot water pipes to the cylinder. the reason you can hear the kettling noise from pipes, seems, the pipes coming back to the boiler from cylinder (28mm) are badly blocked. a very strong flush (ideally a power flush) can...

hi guys, i had a sunvic douval 3 port valve, which was leaking for god knows how long, on to the pump hence scaling up all pipes and pump, causing the fuse on mains supply to blow every time power was turned on. now i have had the diverter valve and pump replaced by my plumber. now the...