Thanks very much, So would my combination boiler be likely to be a indirect system then? It is a Valiant TurboMax and I have this new radiator which is not supposed to be used with direct systems so I am unsure if i should install it or not.
Also do you know exactly what the difference is...
Does anyone know why there are radiators for direct systems that should not use a corrosion inhibitor and ones that should.
I have a 15 yr old rediator to be replaced with a new one. The new one is not supposed to be used with a direct system as it cannot be used with corrosion inhibitors...