Details on Global Presettings for Multisupplier Dwelling Stations
Information on the dialog Global specifications for manufacturer- neutral heat interface units in the pipe network calculation for heating.
In this dialog, you make global settings that apply to all manufacturer-neutral heat interface units in the project. These data can be changed in the technical data dialog of individual heat interface units.
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Temperature (cold)
Enter the cold water temperature for the associated apartment.
Temperature (hot)
Enter the hot water temperature for the associated apartment.
Tap rate
The tap rate determines the peak requirements of hot water demand. The standard value of 15 l/min corresponds to two consumers that are tapped simultaneously, a bathtub and a shower, e. g. Normal are around 12–17 l/min.
Heat capacity
The heat capacity is calculated and initially assigned to all manufacturer neutral heat interface units in the model. These values can be edited in the technical data dialog of individual heat interface units.
Supply Water Temperature
Enter the supply water temperature for heating potable water. The supply water temperature may not be higher than the supply water temperature in the heat generator. It should not exceed 65 °C in order to avoid calcification of the heat exchangers.
Return water temperature
Enter the return water temperature for heating potable water. Return water temperature in a heat interface unit is lower than return water temperature in the heat generator due to additionally being reduced by heating potable water.
Differential pressure controllers
Usage of differential pressure controllers is encouraged when using heat interface units. If the differential pressure controller is included with the heat interface unit, enter the pressure loss of the differential pressure controller here. If a separate component is used for the differential pressure controller, enter a Zero here and enter the pressure loss in the technical data dialog of the differential pressure controller.
Pressure loss, kv-value
Enter either the pressure loss or the Cv value of the heat interface unit.
Volume
The water volume of the heat interface unit is required to calculate the system volume and to design the diaphragm expansion vessel (DEV). If no water volume is entered, a note will be issued in the dialog Edit reports. This only occurs with a diaphragm expansion tank installed.