Details on component data for “Hydraulic separator” and “Non-pressurized Manifold"
Information on the component data dialogs for hydraulic separators and non-pressurized manifolds in the pipe network calculations for heating and cooling.
In these dialogs, you define the technical data for hydraulic separators and non-pressurized manifolds.
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The hydraulic separator ensures hydraulic separation of the pipe network and thus also separation of the flow paths. On behalf of manifolds, the program differentiates between closed manifolds and open, pressureless manifolds. Non-pressurized manifolds behave like a hydraulic separator. If both components are used, a pump must be installed in both the primary and secondary circuits to ensure the supply pressure is maintained.
Name
Specifies the name of the component. You can modify the name. Clicking 
restores the default setting.
Zeta Inlet, Zeta Outlet
You can use these two input fields to adjust the resistance coefficients for the inlets and outlets of the component in order to map the pressure loss of the entire component. The default values are 1 for the inlet and 0.5 for the outlet.
Volume
Defines the capacity of the component in liters. This value will be used for the calculation of the system volume and for the dimensioning of the diaphragm expansion tank. If the volume is not entered, a warning appears during the calculation. This only occurs with a diaphragm expansion tank installed.
Supplement to mass flow rate
Enables the definition of a percentage mass flow surcharge. This increases the mass flow on the primary side in order to ensure a sufficient supply for the secondary side. Mass flow surcharges can lead to a temperature increase in the connected flow and return pipes of the primary circuit and to larger required minimum cross-sections of the component.
Design velocity
Defines the Design Velocity for calculating the required minimum cross-section.
Required minimum cross-sections:
When calculating the pipe network, the required minimum cross-section for the component is determined using the Design Velocity and any specified mass flow surcharge and displayed at the bottom of the dialog.