Grundfos ALPHA2 GO 25-75 180 Circulator Pump

The Grundfos ALPHA2 GO 25-75 180 is a high-efficiency circulator pump designed for heating and air conditioning installations in residential and light commercial environments. It features permanent magnet motor technology and advanced electronic control, significantly reducing energy consumption while maintaining optimal hydraulic performance.

Thanks to integrated Bluetooth connectivity, the pump can easily connect to the Grundfos GO app, providing a setup assistant that ensures correct adjustment according to the system type, enhancing overall installation efficiency and reducing errors during commissioning.

Main Applications

• Radiator heating systems
• Underfloor heating systems
• HVAC and air conditioning installations
• Water circulation systems in residential buildings

Hydraulic Performance

• Nominal flow rate: 2.52 m³/h
• Nominal head: 5.52 m
• Maximum head: 7.5 m
• Maximum working pressure: 10 bar

Control and Energy Efficiency

• Integrated frequency converter
• Configuration and diagnostics via Grundfos GO app over Bluetooth
• Energy Efficiency Index (EEI): 0.19
• Optimized power consumption based on system demand

Materials and Construction

• Hydraulic body made of EN-GJL-150 cast iron
• Housing compliant with EN 1561 / ASTM A48M-150B
• Impeller made of PES composite reinforced with fiberglass
• Compact and robust design for long service life

Electrical Data

• Minimum absorbed power (P1): 3 W
• Maximum absorbed power (P1): 75 W
• Power supply: 1 x 220-240 V
• Network frequency: 50 / 60 Hz
• Current consumption: from 0.04 to 0.68 A
• Protection rating: IP44
• Insulation class: F
• Integrated electronic thermal protection

Installation and Compatibility

• Hydraulic connection: 1 1/2 inches
• Connection standard: ISO 228-1
• Nominal connection pressure: PN 10
• Connection length: 180 mm
• Ambient temperature range: 0 to 55 °C
• Liquid temperature: from -10 to 110 °C

Weight and Dimensions

• Net weight: 1.96 kg
• Gross weight: 2.14 kg
• Port-to-port length: 180 mm

The Grundfos ALPHA2 GO 25-75 180 is an advanced and efficient solution for professionals seeking a reliable circulator pump that is easy to configure and features very low energy consumption, optimizing performance and thermal comfort in any installation.