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  1. I

    DIFFERENCE BETWEEN DIRECT AND INDIRECT SYS?

    makes sense. thanks very much.
  2. I

    DIFFERENCE BETWEEN DIRECT AND INDIRECT SYS?

    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...
  3. I

    DIFFERENCE BETWEEN DIRECT AND INDIRECT SYS?

    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...
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