Should I add anything to the water when refitting a radiator

[JBrennand]

Just removed a radiator for decorating. The water was nasty black with a scummy sheen to it. Anyway, I have washed it out with running water and will refit over the weekend. Should I add something to it - one of the many treatments I see in B&Q etc. If so what would you recommend?

It's a combi boiler sealed system.

Thanks John

 

[LUNAT]

HI

add sentinel sludge remover leave the system running for few days then flush with fresh water and finally add and leave sentinel inhibitor.

 

[Homesafe]

i'd suggest you firstly put a cleaner in (fernox sludge remover or something similar)and run the system for the time suggested or a bit longer in your case,
quote:"The water was nasty black with a scummy sheen to it".
then drain and put an inhibitor in.