Discuss Vaillant Atmotec exclusiv - no pressure in the UK Plumbing Forum | Plumbing Advice area at PlumbersForums.net
Think that's the discharge.It could be the white knob, although the arrows would be the wrong orientation. Keep looking. Does the bnb host know?
I wondered that, but wasn’t sure, as it appears connected to the return?Think that's the discharge.
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