central Heating - puzzled


Introducing anti-corrosive into system. Advice has been to put it into a radiator or the supply tank. But if the former, how do i get it into the pipework from the tank to where the circulating system begins? If the latter, how can it ever reach the circulating system? Is there any certain way of doing it - i'd appreciate some help here.
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steve marchant wrote:

not sure if you need to empty the header before putting the solution in first though
--
Kevin R
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