Heliotrope Smith wrote:
"Phil L" wrote in message


Drain, refill and run a couple of hours. Drain, refill, run and
drain. If now the
water comes out clear then fit new boiler. Another fill and flush is
recommended
after the new boiler is fitted.

Exactly what I did to our 25 + year old system, no problemo.



--
Dave - The Medway Handyman
www.medwayhandyman.co.uk