Grundfos ALPHA2 25-60 130 Circulating Pump

The Grundfos ALPHA2 25-60 130 circulator pump is an advanced and efficient solution for heating systems, ideal for domestic, commercial, and industrial applications. This model stands out for its ability to automatically adjust to heat demands, thanks to AUTOADAPT technology, which continuously optimises the pump's performance, ensuring maximum comfort with minimal energy consumption. With an excellent energy efficiency index (EEI), significantly lower than the reference standard of the ErP regulation, this pump is a sustainable option that allows significant energy savings.

The ALPHA2 25-60 130 model offers three control modes: proportional pressure, constant pressure, and constant curve. This allows the pump to easily adapt to the system's characteristics, optimising operation according to specific needs. In addition, the integrated display shows real-time energy consumption (in watts) or flow rate (in m³/h), and provides alerts and notifications via LED indicators.

Another notable feature is the automatic night mode, which reduces motor speed when it detects a drop in pipe temperature, saving energy without compromising performance. During the summer, the manual summer mode prevents rotor blockage, allowing the pump to operate at low speed and ensuring a smooth start-up at the beginning of the heating season.

The design of the Grundfos ALPHA2 includes an encapsulated rotor, eliminating the need for maintenance, as the bearings are lubricated with the pumped liquid itself. This, along with the use of durable materials such as stainless steel in key components like the ceramic shaft and carbon thrust bearing, ensures a long service life and reliable operation. The pump is also self-venting, facilitating a quick and easy start-up.

Additionally, the ALPHA2 is compatible with the ALPHA Reader hydraulic balancing system and the Grundfos GO Balance app, allowing installers to adjust the heating system precisely and efficiently without complications. This contributes to optimal system performance and greater energy efficiency.

Technical Specifications:

• Nominal flow rate: 1.94 m³/h
• Nominal head: 3.28 m
• Liquid temperature range: 2 °C to 110 °C
• Input power: 3 W - 34 W
• Nominal voltage: 230 V
• Maximum working pressure: 10 bar
• Protection class: IPX4D
• Net weight: 1.89 kg

Construction Materials:

• Pump body: Cast iron (EN 1561 EN-GJL-150, ASTM A48M-150B)
• Impeller: Composite material (PES 30% GF + PESU-GF20%)
• Shaft: Ceramic with carbon bearings and stainless steel.

Key Benefits:

• AUTOADAPT: Automatically adjusts to provide maximum comfort and energy efficiency.
• Night and summer mode: Additional energy savings during periods of lower demand.
• Maintenance-free: Thanks to its robust and encapsulated design, key components are naturally lubricated with the pumped liquid, reducing maintenance costs.

The Grundfos ALPHA2 25-60 130 circulator pump is an excellent choice for those looking to optimise their heating system's energy consumption and improve comfort without compromising efficiency or ease of installation.