replacing radiator and inhibitor needed?

[Metatronuk]

Hi,

I have taken my rad off to paint it and behind it properly. I was just wondering, the system already has inhibitor in it, do I need to add a little more to the rad or will it be ok just letting the whole system dilute slightly and then bleading all the rads?


Thanks for any info...

Oh btw its an Ariston Combi condensing system

 

[Bahco]

I would leave it if it was a small rad you drained but it is your choice whether you wish to spend the £15 on a bottle of Sentinel / Fernox.