Wilo-Yonos MAXO 25/0,5-12 PN10 circulation pump 2120641

High-efficiency circulation pump for HVAC systems

The Wilo-Yonos MAXO 25/0,5-12 PN10 circulation pump is an advanced device designed for circulating water in heating, ventilation and air conditioning installations. It utilizes an energy-efficient ECM motor with electronic, stepless differential pressure control (Δp), which ensures a stable flow and minimizes operating costs. It is an ideal solution for both new installations and the modernization of existing systems.

Design and application

The pump is designed to work with various types of installations, including those with glycol. The wide head range (0.5–12 m) allows it to be used in radiator risers, underfloor heating manifolds with a mixing group, nodes with plate heat exchangers, and in cooling circuits. PN10 execution guarantees compatibility with popular armature standards. The pump body made of cast iron GG 20 (GJL-200) ensures durability and corrosion resistance. The impeller made of polypropylene (PP-GF) is resistant to the action of the medium.

Advantages and benefits

• High energy efficiency: Thanks to the ECM motor and Δp control, the pump achieves an EEI index of 0.2, which translates into significant energy savings. The motor power consumption is only 0.3 kW, and the minimum power consumption is as much as 10W.
• Smooth performance regulation: Stepless speed control allows for precise adjustment of the pump's performance to the current system needs, eliminating noise and pressure losses associated with flow throttling.
• Automatic functions: Built-in impeller chamber venting and impeller unblocking functions after a period of inactivity minimize the risk of failure and ensure reliable operation. Automatic return to set parameters after a power failure increases system safety.
• Simple operation and diagnostics: An intuitive LED display indicates the set head, and the red Wilo knob makes it easy to set operating parameters.
• Durability and reliability: Construction from high-quality materials and insulation class F ensure a long service life even in difficult working conditions (ambient temperature -20°C to +40°C). A cathodic coating (KTL) protects the housing against corrosion.
• Versatility: The ability to work with a mixture of water and glycol expands the range of pump applications.
• Convenient installation: The connection length is 180 mm, and the threaded G 1½ inch connections facilitate integration with the existing installation. The WILO plug with pull-out protection ensures a safe electrical connection.

The Wilo-Yonos MAXO 25/0,5-12 PN10 pump is an investment in the comfort, savings and reliability of a heating or air conditioning system – for both professional installers and end users.