Flush volume: this option provides a partial wort drain after the cooling process, if it is non-zero (for instance, not to let dead remains enter the FERMENTER from the outlet line). The following wort outlet will continue after pressing <OK> in the dialog box.
Wort boiling temperature: this option allows to change power when wort boils in dependence of the geographical location of BeerRender. It is selected according to the temperature sensor installed on the boiling tank by specialists when 10-15 liters of water start boiling in the boiling container.
Boiling power: this option lets control bowling power to which BeerRender switches when it reaches the wort boiling temperature (described earlier).