Filling loop left open

What should I do if I left my filling loop open?

The filling loop on a boiler is used to fill the boiler, radiators and all the heating pipework (known as “the heating system”) with water.

If the filling loleft open the pressure in the system will rise until it hits roughly 3 bar then a safety valve opens. This lets any excess pressure escape outside.

For more advice on what to do click here.

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