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This is just a flow sensor, right? It detects flow and activates boiler startup & diverter valve...
Discuss Worcester DHW Flow Turbine in the Plumbing Jobs | The Job-board area at PlumbersForums.net
Yes but if it isn't working (spinning when hot water tap is opened) the boiler won't neccesarily go to fault
Whats the problem, have had plenty (and Vaillants) with veins missing on the impellers and not spinning
Fins, similar to a propellers blades
A propeller moves water, therefore moving the vessel (boat) and the "propeller/impeller" in the flow turbine gets moved by the cold water entering the boiler when a hot tap is turned on, in turn telling the boiler to fire
That's in simple buggars terms (mine lol)
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