Grundfos ALPHA2 25-80 180 Circulator Pump

The Grundfos ALPHA2 25-80 180 circulator pump is an advanced solution designed to enhance efficiency and comfort in heating and air conditioning systems. It belongs to the renowned ALPHA2 range, which stands out for its ability to automatically adapt to system demands, optimising energy performance and facilitating start-up. This pump is ideal for both commercial and domestic applications, making it suitable for heating commercial buildings, homes, and industrial environments.

AUTOADAPT Technology: automatic efficiency

One of the key features of the Grundfos ALPHA2 is its AUTOADAPT technology, which automatically adjusts the pump's operation to the system's needs in real time. This ensures that the flow rate and pressure are always appropriate, resulting in greater energy efficiency and reduced electricity consumption. Additionally, it simplifies installation by eliminating the need for complex manual adjustments.

Performance and technical specifications

With a nominal flow rate of 2.14 m³/h and a nominal head of 4.36 metres, the ALPHA2 25-80 180 is capable of handling large volumes of water and ensuring uniform heat distribution throughout the system. Its maximum head of 80 dm ensures reliable performance in a variety of applications, while its maximum working pressure of 10 bar allows it to operate under demanding conditions without compromising efficiency or durability.

The range of the pumped liquid temperature varies between 2 °C and 110 °C, allowing its use in a wide range of heating and cooling systems. During normal operation, the liquid temperature is maintained at 60 °C, with a density of 983.2 kg/m³, ensuring a steady and efficient flow through the system.

Durable and high-quality materials

The pump body is made from cast iron, compliant with EN 1561 EN-GJL-150 and ASTM A48M-150B standards, ensuring excellent strength and durability. The impeller is made of an advanced composite, combining PES with 30% glass fibre reinforcement, ensuring its durability over time and resistance to corrosion.

Easy installation and versatile connections

The installation of the ALPHA2 is straightforward thanks to its compact design and versatile connections. The pump features G-type connections of 1 1/2 inches, which are compatible with a wide variety of piping systems, facilitating its integration into different installations. The port-to-port length is 180 mm, allowing its installation in confined spaces without difficulty.

Outstanding energy efficiency

With an energy efficiency index EEI of 0.18, this circulator pump is highly efficient in terms of electrical consumption. Its input power ranges from 3 W to 50 W, depending on system demands, ensuring optimised operation at all times. Additionally, it features an integrated thermal protection system, ensuring its durability and safety during use.

Quiet operation and night mode

The ALPHA2 pump features an automatic night mode that reduces its activity when intensive operation is not required, further reducing energy consumption. Additionally, its operation is quiet, making it ideal for installations in residential or commercial areas where noise could be a concern.

Key technical data:

• Nominal flow rate: 2.14 m³/h
• Nominal head: 4.36 m
• Maximum head: 80 dm
• Maximum working pressure: 10 bar
• Pump body material: Cast iron
• Liquid temperature: 2°C to 110°C
• Connection: G 1 1/2 inches
• Nominal voltage: 230 V (single-phase)
• Input power: 3 W - 50 W
• Maximum current consumption: 0.04 - 0.44 A
• Net weight: 1.98 kg
• Protection class: IP X4D
• Energy efficiency index (EEI): 0.18