• Automatic control of water volume – also in the partial load rang
• adjusted flow rate is not exceeded
• Fast hydraulic balancing without measuring instrument
• Wide range of products, easy planning
• High reserve due to very wide adjustment range up to 340 l/h
• Geometry of valve insert provides protection against unwanted pollution, failure due to blocking is practically impossible

• Precise measurement and adjustment of the required water volume per radiator
• Reliable procedure for larger and complex heating systems
• Measurement option at the valve for documentable and verifiable adjustment
• Time and cost savings: Neither dynamic valves nor line fittings are required
• Up to 80 % savings with regard to pump capacity as compared to automatically balanced heating systems
• Further optimisation potential due to, for example, fewer burner starts or increased condensing effect by optimum system spread.
• Detection of interchanged flow and return lines prior to commissioning

Make hydraulic balancing even more efficient and use the combination of Vario-DP and the wireless actuator AVD 30.

You benefit twofold: The electronic thermostats allow for intelligent adaptation of the room temperature to the actual use of the room (night mode, holiday, etc.) via the AFRISO Smart Home.

On its way to the radiators and back to the boiler, the hot water flow always chooses the path of least resistance. Due to this natural law, in heating systems without hydraulic balancing radiators further away from the pump are supplied with insufficient amounts of hot water while radiators close to the pump receive too much hot water.

Typical countermeasures such as increased pump capacities or higher flow temperatures do not improve this situation, but rather amplify the negative effects. Such systems consume much more energy than necessary without providing the expected convenience.

• Uneven heat release
• Heating times of rooms/apartments differ
• Thermostat valves cannot properly control the room temperature
• Limited frost protection
• Disturbing flow noise in valves and pipes
• Excessive power consumption due to oversized and/or incorrectly set circulation pumps
• High losses when the heating system starts or is not used
• Low efficiency of condensing systems: Excessive flow through radiators close to the pump leads to high return temperatures and reduces the condensation effect (energy recovery during condensation of the flue gas)
• Flow temperature is set to an unnecessarily high value to supply hydraulically unfavourable radiators with heat

Hydraulic balancing ensures optimum distribution of the water in the heating system. Based on the actual heat requirements of the building, the circulation pump, the control (flow temperature), the fittings and the valves are adjusted to change the volume flow in the pipes in such a way as to obtain the required flow resistance for all radiators. This forces the hot water to flow through the system exactly as required. The right method and suitable components allow for considerable savings. In individual cases, this may amount to as much as 15% and more of the annual heating capacity.

In Germany, hydraulic balancing is mandatory, as stipulated by the German VOB, part C (German Construction Contract Procedures), and DIN 18380. The German EnEV (Energy Savings Ordinance) also requires hydraulic balancing for all new and renovated heating systems.