Grundfos ALPHA1 L 25-60 130 Circulating Pump

The Grundfos ALPHA1 L 25-60 130 circulator pump, reference 99160583, is an efficient and reliable solution for heating systems in domestic, commercial, and industrial applications. Designed with the latest energy efficiency technology, the ALPHA1 L is a circulator pump with a permanent magnet motor (ECM technology), providing optimal performance and low energy consumption across a variety of heating installations. Thanks to its advanced features, this pump can be used in both new systems and as a replacement for pumps in existing installations.

Versatile control modes:

The ALPHA1 L 25-60 130 offers three control modes to suit the needs of different types of heating systems:

1. Radiator heating mode: optimises performance in heating systems with traditional radiators.
2. Underfloor heating mode: adjusts water flow to ensure even heat distribution in underfloor heating systems.
3. Constant curve/speed mode: maintains a fixed speed or constant operating curve, ideal for applications requiring more precise flow and pressure control.

Additionally, the pump can be controlled via a PWM signal (pulse-width modulation), allowing integration into more advanced systems that require external control. This PWM profile is particularly useful in modern heating applications where greater optimisation of energy consumption is sought.

High energy efficiency:

The Grundfos ALPHA1 L complies with the ErP Directive thanks to its high energy efficiency design. With an energy efficiency index (EEI) of 0.20, this pump is an ideal choice for reducing energy consumption in heating systems, helping to meet current regulations and reduce energy costs in homes or commercial installations.

The maximum input power is just 45 W, with a minimum consumption of 4 W, ensuring the pump operates efficiently even under low demand conditions. Additionally, its permanent magnet motor ensures the pump maintains its performance with optimised energy consumption at all times.

Durable materials and design:

The robust design of the ALPHA1 L is intended to offer long durability and maintenance-free operation. The pump has a cast iron body (EN 1561 EN-GJL-150), providing resistance to demanding conditions. The impeller is made of composite (PES+30% GF), a corrosion-resistant material that ensures long-lasting and efficient operation in any type of heating system.

Moreover, the pump includes a ceramic shaft and radial bearings, which are highly resistant to wear, extending the pump's lifespan. The wet rotor design ensures the bearings are lubricated with the pumped liquid, eliminating the need for additional lubrication and allowing the pump to operate without regular maintenance.

Easy installation and reliable operation:

The installation of the Grundfos ALPHA1 L is straightforward thanks to its compact design and its port-to-port length of 130 mm, facilitating its integration into existing heating systems. Its adjustable and flexible connector with two possible cable entry positions further simplifies installation and ensures a reliable and secure connection.

The integrated control panel makes it easy to select the appropriate control mode for each type of system, and the pump is self-venting, which simplifies commissioning and ensures the pump operates efficiently from the start.

Hydraulic performance and technical features:

With a nominal flow rate of 1.94 m³/h and a nominal head of 3.28 m, the ALPHA1 L is ideal for a wide range of heating applications. Whether in domestic, commercial, or industrial systems, this pump provides a consistent and efficient flow, ensuring optimal water circulation to guarantee adequate thermal comfort.

The pump is designed to operate with a liquid temperature range between 2°C and 95°C, making it suitable for most heating applications. Additionally, it can withstand a maximum working pressure of 10 bar, ensuring safe and stable operation in heating systems with high pressures.

Key technical specifications:

• Nominal flow rate: 1.94 m³/h
• Nominal head: 3.28 m
• Maximum working pressure: 10 bar
• Liquid temperature range: 2°C to 95°C
• Minimum input power: 4 W
• Maximum input power: 45 W
• Nominal voltage: 1 x 230 V
• Network frequency: 50/60 Hz
• Energy efficiency index (EEI): 0.20
• Net weight: 1.95 kg

Advantages of the Grundfos ALPHA1 L 25-60 130 model:

• High energy efficiency: Its permanent magnet motor and ECM design optimise energy consumption, complying with the ErP Directive.
• Versatile control modes: Offers specific modes for radiator heating, underfloor heating, and constant curve control, ensuring flexibility in use.
• Durable design: High-quality materials and corrosion-resistant components guarantee a long service life.
• Easy installation: Compact design and adjustable connector, ideal for new and replacement installations.