WebThe pumps on the Greenstar CDi range have a permanent live feed to them. If the pump is always running, there are generally 3 causes for this: The speed control wire (purple, … WebOct 3, 2024 · The cold water feed pipe supplies the boiler with cold water for heating. In some heating systems the cold feed pipe and the open vent pipe are the same. ... #1 …
What Does “Pump Overrun” Mean? - Fantastic Services Advice H…
WebJan 19, 2013 · Pump overrun is a standard feature on most boilers. It's a safety measur and a normal operation. The pump runs for a short period after the heating is turned off, to take away any hot water from boiling and damaging your heat exchange. ... I have a keston Celsius 25 boiler the hot water thermostat is stuck between on and off so is on ... WebNov 26, 2003 · E. Ed Sirett. posted. 19 years ago. Show Quoted Text. A way to do this as I understand it: Connect the pump to the common pole of the changeover switch, connect the boiler demand to the pole which is closed when the pipes are cool, connect a permanent live feed to the pole which is closed when the switch is hot. frees as a dresser drawer crossword
Vaillant EcoTec Pump Overrun Problem? PlumbersForums.net
WebOct 28, 2024 · Most modern heat only boilers need to use pump overrun to dissipate residual heat and reduce the risk of water boiling in the heat exchanger when it is … WebAug 25, 2008 · The pump overrun is specifically designed to discharge latent heat from the boiler casing and prevent damage. If no heat was discharged there would be no reason … WebJan 7, 2015 · Keep the pump running until the residual heat has been dispersed, and the problem goes away. Simple! The problem is much more acute in modern boilers which contain a relatively small amount of water but have a large mass of metal. Your old boiler probably holds much more water, and can cope without pump over-run. farm parts chippenham