Grundfos ALPHA1 L 25-40 130 Circulator Pump

The Grundfos ALPHA1 L 25-40 130 circulating pump is an advanced high-efficiency solution specifically designed for heating systems in both residential and commercial settings. With its permanent magnet motor (ECM technology), this pump ensures optimal energy performance, meeting the requirements of the ErP Directive, making it an ideal choice for those seeking a reliable, efficient, and sustainable pump.

This pump is suitable for various heating applications, such as domestic heating, industrial heating, and commercial buildings. It can be used independently or easily integrated into existing heating systems, either as a replacement or in new installations. Its versatility and ease of installation make the ALPHA1 L 25-40 130 an adaptable choice for different heating configurations.

Versatile operating modes:
The ALPHA1 L 25-40 130 offers three different control modes, allowing it to precisely adapt to the needs of different types of heating systems. These modes include:

• Radiator heating mode, which ensures efficient heat distribution throughout the system.
• Underfloor heating mode, designed to optimise water flow in underfloor heating systems.
• Constant curve/speed mode, for applications that require precise and constant water flow control.

Additionally, the pump can be controlled via a low-voltage PWM (pulse width modulation) signal, facilitating its integration into advanced energy management and automatic control systems.

Robust construction and durable materials:
The ALPHA1 L is built to ensure a long service life and reliable operation, even under demanding operating conditions. The pump's key components include:

• Ceramic shaft and radial bearings that ensure durability and reduce wear.
• Carbon thrust bearings, offering high resistance to friction.
• Cast iron housing, enhancing corrosion resistance.
• Composite impeller (PES+30% GF), contributing to a lightweight and robust performance.

All these materials and components ensure smooth operation of the pump and minimise maintenance needs throughout its lifespan.

Easy installation and maintenance:
The compact and ergonomic design of the ALPHA1 L makes its installation simple and quick, thanks to its integrated pump head with control panel. The self-venting system further simplifies commissioning by automatically removing trapped air, ensuring hassle-free operation. Additionally, the pump is designed to fit the most common installations, including boilers, making it a versatile option for all types of heating systems.

Efficient and quiet operation:
The permanent magnet motor with ECM technology provides highly efficient performance, reducing energy consumption. With a minimum input power of just 4 W and a maximum of 25 W, the ALPHA1 L is extremely energy efficient. Moreover, thanks to its wet rotor design, the bearings are lubricated with the pumped liquid, eliminating the need for regular maintenance. This type of motor also ensures quiet operation, ideal for use in residential and commercial environments without causing disturbances.

Additional technical features:

• Nominal flow rate: 1.8 m³/h, ensuring adequate water circulation in heating systems.
• Nominal head: 2.01 metres, providing sufficient lift for use in most heating systems.
• Liquid temperature: Operating range of 2°C to 95°C, allowing for use in a wide variety of heating applications.
• Maximum working pressure: 10 bar, ensuring safe operation in high-pressure systems.
• Connection: Type G of 1 1/2 inches, with a port-to-port length of 130 mm, facilitating installation in standard heating systems.

Efficiency and sustainability:
The Grundfos ALPHA1 L 25-40 130 stands out for its energy efficiency index (EEI) of 0.20, ensuring low electricity consumption and making it an environmentally friendly option. This level of efficiency not only reduces operating costs but also helps decrease the carbon footprint of the heating system.