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Discuss How to add water to system- Vaillant Ecotec Pro in the Central Heating Forum area at PlumbersForums.net
ThanksThe screw is just holding the black plastic lever on- if it’s stiff you can undo the screw, remove the black handle and turn the valve with a spanner.
Reply to How to add water to system- Vaillant Ecotec Pro in the Central Heating Forum area at PlumbersForums.net
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