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Best way to drain heating system

I've already added the sludge remover and I have a conventional boiler & it’s an open system.
when you drain the system (as in the full flush out), do you flush just after you’ve had your rad’s on so the water is hot (guessing this creates more pressure)-jus a thought. Thanks.

Comments

  • Doesnt really matter about the pressure because the pressure depends on the height of the cistern in your loft that feeds the heating.

    However, if its just finished pumping more particles will be suspended in the water so I would say best to do it hot... With the stopc8ck off & boiler off.
    Not Again
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