Here you can define difference of pressure regulations for pumps and valves.

• Control name – Name of the regulation, which must be unique within the regulations.
• Rule element – Use this Combination field to select the pump or valve to be regulated.
  Note: The field is deactivated as soon as the control is in use by a network calculation.
• Type of regulation – Specifies the kind of difference of pressure control. The following possibilities to set a pressure differential are available:
• Between nodes – To maintain the pressure differential between the rule nodes node 1 and node 2
• Element – To assign a constant pressure loss/increase to a valve or a pump
• Consumer – To adjust the pressure differential at the selected consumer
• Crit. Consumer – To set the pressure differential at the crit. consumer in the calculation ⚠ With the type of regulation "crit. consumer", it is accepted that the consumer selected as crit. consumer is started with. In the process of network calculation, the crit. consumer can change dynamically.
• Node 1/node 2 – Combination fields to select the rule nodes, between which the pressure differential is to be maintained. The fields are active if the type of regulation selected is "between nodes".
• Consumer – Combination field to select the consumer which is be regulated. The field is only active if the type of regulation set is "consumer" and "crit. consumer".
• Pressure differential – The pressure differential which is to be maintained between the two selected nodes or the pressure loss/the delivery height for the rule element.
  Warning: The pressure differential is determined as a difference of the abs. pressures between node 1 and node 2. If the regulation is applied to the element itself, the numerical value describes the pressure loss which is to be set. Therefore, the pressure differential must be negative with pumps so that a constant increase in pressure is obtained!