Grundfos ALPHA2 25-60 180 Circulator Pump

The Grundfos ALPHA2 25-60 180 circulator pump is an advanced and efficient solution designed for heating systems in commercial, domestic, and industrial buildings. Thanks to its innovative AUTOADAPT function, this pump continuously adjusts to the system's needs, ensuring optimal comfort and reduced energy consumption. The ALPHA2 is ideal for radiator heating systems, underfloor heating, and air conditioning systems, always guaranteeing uniform temperature distribution and easy start-up.

Intelligent operation with AUTOADAPT

One of the most notable features of the ALPHA2 25-60 is its AUTOADAPT technology, which automatically adjusts the pump's flow and pressure according to the system's demands. This means the pump never consumes more energy than necessary, resulting in significant energy savings over time. Additionally, this function simplifies installation by eliminating the need for complicated manual adjustments, allowing for quick and easy configuration.

Optimised technical performance

The ALPHA2 25-60 pump offers a nominal flow rate of 1.94 m³/h and a nominal pumping height of 3.28 metres, with a maximum height of 6 metres. These specifications make it an ideal choice for a wide range of heating and air conditioning applications in commercial and residential buildings. The pump is designed to operate efficiently even under high pressure, with a maximum working pressure of 10 bar.

Key technical specifications:

• Nominal flow rate: 1.94 m³/h
• Nominal height: 3.28 m
• Maximum height: 6 m
• Maximum working pressure: 10 bar

High-quality and durable materials

The ALPHA2 25-60 is made with high-quality materials that ensure its long-term durability and reliability. The hydraulic body is made of cast iron (EN 1561 EN-GJL-150 / ASTM A48M-150B), while the impeller is made of reinforced composite (PES 30% GF + PESU-GF20%), ensuring wear resistance and efficient, quiet operation. These materials ensure that the pump can withstand demanding operating conditions without compromising performance.

Material specifications:

• Hydraulic body: Cast iron (EN 1561 EN-GJL-150)
• Impeller: Composite (PES 30% GF + PESU-GF20%)
• Port-to-port length: 180 mm

Flexible and easy installation

The Grundfos ALPHA2 25-60 is designed for easy and quick installation, with a port-to-port length of 180 mm and 1 1/2 inch connections. Its compact design facilitates integration into existing heating systems, while its liquid operation temperature range of 2 to 110 °C allows it to adapt to various conditions. Additionally, its capability to operate at liquid temperatures up to 60 °C during operation ensures reliable performance in intensive heating systems.

Installation data:

• Connection size: 1 1/2 inch
• Liquid temperature range: 2 to 110 °C
• Operating liquid temperature: 60 °C

Outstanding energy efficiency

The ALPHA2 25-60 is equipped with a highly efficient motor that minimises energy consumption. Its input power ranges from 3 W to 34 W, ensuring low consumption even during high demand periods. The pump features an energy efficiency index (EEI) of just 0.17, placing it among the most efficient pumps on the market. Additionally, its automatic night mode function further reduces energy consumption during low demand, optimising the pump's performance throughout the day.

Electrical specifications:

• Minimum input power (P1): 3 W
• Maximum input power (P1): 34 W
• Nominal voltage: 230 V
• Network frequency: 50/60 Hz
• Maximum current consumption: 0.04 to 0.32 A
• Protection grade: X4D
• Insulation class: F

Certifications and approvals

The Grundfos ALPHA2 25-60 holds several international approvals, such as CE, VDE, EAC, and RCM, ensuring its quality and compliance with the highest safety and efficiency standards. These certifications confirm that the pump is suitable for use in a wide range of heating and air conditioning applications, ensuring its reliability and performance in commercial, residential, and industrial installations.

Additional specifications:

• Net weight: 2.01 kg
• Gross weight: 2.17 kg
• Transport volume: 0.004 m³