I have a baxi back boiler with gas front (front is a few years old and the back we think is 1974). I have a hot water tank with f&e in the loft. The heating is a C-plan setup.
Basically, the boiler kettles a fair bit, despite me having turned it down under the fire (doesnt make any difference where the temp is set). The boiler also cycles a lot with the hot water calling for heat, cycles less with heating demand, but still cycles.
We have taken one radiator off to change the pipes, and flushed it outside - a little bit of black water came out, no sludge though.
When i put the radiator back on i have got some sentinel x100 to put back in (this was probably last done about 10 years ago - previous owners did it so i'm not sure). Will this be enough, or should i put some x400 or x800 in and flush it through to try and stop some of the kettling/cycling? Should i flush after i put the radiator back on, or before?
Finally, is this a fairly accurate guide:
https://timstephenson.me.uk/flushin...system-simple-something-you-really-should-do/
Thanks
Basically, the boiler kettles a fair bit, despite me having turned it down under the fire (doesnt make any difference where the temp is set). The boiler also cycles a lot with the hot water calling for heat, cycles less with heating demand, but still cycles.
We have taken one radiator off to change the pipes, and flushed it outside - a little bit of black water came out, no sludge though.
When i put the radiator back on i have got some sentinel x100 to put back in (this was probably last done about 10 years ago - previous owners did it so i'm not sure). Will this be enough, or should i put some x400 or x800 in and flush it through to try and stop some of the kettling/cycling? Should i flush after i put the radiator back on, or before?
Finally, is this a fairly accurate guide:
https://timstephenson.me.uk/flushin...system-simple-something-you-really-should-do/
Thanks