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Dirty sight glass after new radiator installed

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rathernotsay
rathernotsay Member Posts: 6
in THE MAIN WALL
We had a small cast-iron upright radiator installed y'day and now our boiler's sight glass is very dirty. We've flushed the boiler water twice (was black) and the water is better, but the sight glass has scum stuck to it now. Is this normal with a new radiator? Any tips on cleaning the sight glass?

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  • jack_4
    jack_4 Member Posts: 43
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    Normal

    Normal, skim the boiler and use colloid treatments.
  • jack_4
    jack_4 Member Posts: 43
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    The glass

    Forgot this question.

    Take it out and use a small bottle or a nipple brush on the inside.
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