If I understand correctly the op has dropped the horizontal pipe runs down 100mm and then back up again so no chance that is going to circulate using thermosyphon.
Utter nonsense..100 mm will have only a very small effect on the gravity flow.
I was waiting for you to tell us why the OP put PTFE tape on the compressions nut threads.
And yet it does not work.On this thread the small down will be balanced by its up although it will add an extra flow resistance.
Absolute Tosh the boiler wouldnt lightI just turned down the min gas setting.
This is because my lodger insists on running the heating with just the one 1200 W rad in his room turned on.
Of course with a fixed speed fan the excess air will be making it pretty inefficient. But the objective was to prevent cycling.
I tell him to leave bathroom rad on but he turns that off.
Below 2mb??I just turned down the min gas setting.
Burner certainly won't cycle thats for sure...Of course with a fixed speed fan the excess air will be making it pretty inefficient. But the objective was to prevent cycling.
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