Can I Flush System Myself?

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I have done lots of work on the heating system recently like adding a few new rads.
The system was clean (ish) but I guess that the residues from inside the new rads and the flux made the water dirty.

I have run some Fernox cleaner in the system for a few day with the heating on.
How many refills of clean water shall I do before adding inhibitor?

Thanks
 
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Empty it, fill it up again.

Empty

refill then add inhibitor
 
A couple of re-fill and empties should do.... just basically do your best to make sure the cleanser has been completely drained..... add inhibitor on last re-fill....

Martin
 
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If its on a combi, isolate the flow or return and flush through with the mains until clear..ish.
 

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