Hi there

Sorry if this has been answered before but I did have a look and couldnt
find it.

I drained our combi system three or four months back and when I refilled
it I forgot to add inhibitor.

Now Ive remembered Im trying to figure out where to add it. The only
possibles are the filling valve or a radiator bleed valve as far as I can
see.

Can anyone tell me the correct method ?

Thanks

Tim