
High-efficiency circulator for building services applications
ISH 2025
A technical highlight at ISH 2025 will be the KSB Group’s Calio Pro Plus type series – an extension to its programme of high-efficiency glandless pumps with continuously variable speed control. The new pumps reach efficiencies that exceed the requirements of the current energy efficiency regulations.
Thanks to the integrated intelligent Dynamic Control program, energy savings of up to 40 percent more can be achieved compared with conventional proportional-pressure control. As the function is purely based on software, no additional costs will be incurred by further sensors or actuators. The pumps automatically gather all required information from their internal signals. This patented technology practically rules out undersupply in changing system conditions.
The pump offers comprehensive connectivity options for flexible integration into building management systems. A Modbus RTU interface is integrated as standard, enabling direct connection. Additional plug-in modules provide extended compatibility with all common building management systems. Two parameterisable relays are available for operation and fault messages. Connectivity is rounded off by a configurable digital input and an adjustable analog input.
Installation and commissioning are straightforward. All operating modes, functions and setpoints in metres are fast and easy to adjust directly at the pump or via the Bluetooth interface. An energy meter helps monitor and optimise consumption. Also, the pumps offer practical functions such as an operating point display, a calorimeter and a vent function. A dual-pump variant Calio Pro Plus Z is available for dual-pump operation. Suitable for operation with one pump redundant or with both pumps running during maximum load, this model is designed with an energy-efficient changeover behaviour.
Commissioning is swift with the intuitive KSB FlowManager app. The app helps users configure all electrical connections in a flexible and user-friendly way. In the app’s Favourites menu all pump information is quickly accessible. A clear overview of process values is displayed in a graphical diagram. Integrated motor protection ensures high operating reliability. The maintenance-free motor is fitted with a carbon fibre reinforced plastic can. The integrated filter system provides reliable protection against contaminants, such as magnetite.
The pumps of the Calio Pro Plus type series are designed for universal use and cover the pressure classes PN 6, PN 10 and PN 16. New and enhanced characteristic curves offer an extended operating range. The new type series is available in 46 sizes and can handle flow rates of up to 28 m3/h at a maximum head of 16 mWC. The fluid temperature range from -10 to +110 °C makes the new pump sets suitable for a wide variety of applications, from heating water to coolant transport and industrial recirculation systems. The pumps are also available in a twin pump configuration as Calio Pro Plus Z.
To assess the product's environmental impact over its entire life cycle, the pump manufacturer performed a life cycle impact assessment (LCIA) in accordance with the standards ISO 14040 and 14044.
Press release: High-efficiency circulator for building services applications
Press photo: High-efficiency circulator for building services applications