Details on Extended Zeta Values
Information about the Extended Zeta values dialog in the Configuration for Heat Load.
You have the possibility to control and modify the extended simultaneously percentage of ventilation heat loss here.
Note:
The settings of this dialog only affect heat load calculations based on EN 12831 from 2003.
You are here:
Configuration 
(Tool Bar) ➤ Heating Load ➤ Zeta Value
Zeta value Vmin: Zeta for ventilation heat losses of minimum volume flow.
Zeta value Vsu: Zeta for ventilation heat losses due to supply air.
Zeta Value Vmech, inf: Zeta for ventilation heat losses due to extract air excess.
Click 
to reset the corresponding value to the default value from EN 12831(12831.
Standard: Resets all values to the specifications from EN 12831 (2003).