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Click on Basic Conditions ....
The Basic conditions dialog opens.
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In the section Dimensioning, decide whether the design is to be carried out using only the pipe friction pressure gradient or also taking into account the maximum velocity.
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Check and, if necessary, correct the values for maximum velocities if the maximum velocity is to be taken into account in the design.
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Enter a percentage value for Global pressure loss for fittings and joining pieces if the zeta values of the designed fittings are not to be used in the model.
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In the section Hydraulic Balancing, decide whether a hydraulic balancing should be carried out after the calculation.
The following steps are relevant if hydraulic balancing is enabled or minimum pressure drops are to be preset.
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In the section Thermostatic Valves - Properties and Dimensioning, decide whether thermostatic valves in the project should be designed according to real or conventional valve authority and enter the corresponding limit values.
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Define minimum pressure losses for regulating valves and differential pressure regulators.
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Close the dialog with OK.
The basic conditions for the calculation are set.