The ALPHA2 N circulator pump is specifically engineered for domestic hot-water systems, featuring a durable stainless-steel pump housing. Its AUTOADAPT technology dynamically adjusts the pump's performance to match system requirements, ensuring maximum comfort and minimal energy consumption.

Suitable for

• Heating systems
• Air-conditioning and cooling systems.
• Domestic hot-water systems

Features

• Offers multiple automatic control modes for versatile operation.
• Incorporates proportional-pressure control, constant-pressure control, and constant-curve/constant-speed duty options.
• Automatically adjusts performance for optimal efficiency.
• Displays real-time power consumption and flow for easy monitoring.
• Features automatic night setback and manual summer mode for enhanced control.
• Requires no maintenance, operates quietly, and maintains a low Energy Efficiency Index (EEI).
• Facilitates straightforward installation without the need for external motor protection.
• Includes insulating shells for pumps without air separating chambers.
• Operates within a wide temperature range independently of ambient temperature.
• Compatible with ALPHA Reader, enabling fast and safe hydronic balancing of radiators and underfloor heating systems.

Model

• ALPHA2 32-80 N 180
• ALPHA2 32-60 N 180
• ALPHA2 32-40 N 180
• ALPHA2 25-80 N 180
• ALPHA2 25-80 N 130
• ALPHA2 25-60 N 180
• ALPHA2 25-60 N 130
• ALPHA2 25-40 N 180
• ALPHA2 25-40 N 130
• ALPHA2 20-60 N 150

Duty range

• Maximum flow rate, Q: 3.8 m3/h
• Maximum head, H: 8 metres
• Maximum system pressure: 1.0 MPa (10 bar)
• Ambient temperature: 0 to 40 °C
• Liquid temperature: +2 to +110 °C

Performance Curve

Dimensions

ALPHA2 represents a circulator pump tailored for both heating and air conditioning systems. Its AUTOADAPT feature ensures continuous adjustment to system demands, guaranteeing optimal comfort, minimal energy usage, and straightforward commissioning.

Suitable for

• Heating systems
• Air-conditioning and cooling systems.
• Domestic hot-water systems

Features

• Offers versatile operation with multiple automatic control modes.
• Utilizes proportional-pressure control, constant-pressure control, and constant-curve/constant-speed duty options.
• Automatically adjusts performance for optimal efficiency.
• Provides real-time display of power consumption and flow.
• Includes features such as automatic night setback and manual summer mode for added convenience.
• Requires no maintenance and operates quietly with a low noise level.
• Maintains a low Energy Efficiency Index (EEI) for energy savings.
• Simplifies installation with its user-friendly design.
• Does not need external motor protection.
• Includes insulating shells for pumps without air separating chambers.
• Operates within a wide temperature range independently of ambient temperature.
• Compatible with ALPHA Reader, facilitating fast and safe hydronic balancing of radiators and underfloor heating systems.

Model

• ALPHA2 32-80 180
• ALPHA2 32-60 180
• ALPHA2 32-40 180
• ALPHA2 25-80 180
• ALPHA2 25-80 130
• ALPHA2 25-60 180
• ALPHA2 25-60 130
• ALPHA2 25-40 180
• ALPHA2 25-40 130
• ALPHA2 15-80 130
• ALPHA2 15-60 130
• ALPHA2 15-40 130

Duty range

• Maximum flow rate, Q: 3.8 m3/h
• Maximum head, H: 8 metres
• Maximum system pressure: 1.0 MPa (10 bar)
• Ambient temperature: 0 to 40 °C
• Liquid temperature: +2 to +110 °C

Performance Curve

Dimensions

ALPHA2 L stands as a high-efficiency circulator pump catering to fundamental functionality requirements in heating systems. It offers three fixed speed curves, along with two proportional-pressure curves and two constant-pressure curves.

Suitable for

• Commercial heating
• Domestic heating
• Industrial heating

Model

• ALPHA2 L 32-60 180
• ALPHA2 L 25-40 180

Features

• Tailored for circulating liquids within heating systems
• Meets the low energy consumption requirements set by the ErP directive
• Features a straightforward user interface for effortless commissioning

Duty range

• Max flow: 4 m³/h
• Head max: 15 m
• Liquid temperature: 0 .. 110 °C
• p max: 10 bar

Performance Curve

Dimensions

The ALPHA1 model B is adaptable to various heating applications, accommodating both variable and constant flow rates. It employs high-efficiency ECM (Electronically Commutated Motor) pumps, like the ALPHA1, which should not be regulated by external speed controllers that alter or pulse the supply voltage.

Suitable for

• Heating systems
• Air-conditioning and cooling systems.
• Domestic hot-water systems

Features

• Includes three constant pressure curves, three constant speed curves, and three proportional pressure curves.
• Maintains a low Energy Efficiency Index (EEI) for optimal energy performance.
• Requires no maintenance, ensuring hassle-free operation.
• Operates quietly with minimal noise emission.
• Facilitates straightforward installation for user convenience.

Model

• ALPHA1 25-80 130
• ALPHA1 25-60 180
• ALPHA1 25-60 130
• ALPHA1 15-40 130

Performance Curve

Dimensions

ALPHA1 N stands as a high-efficiency circulator pump designed for domestic hot-water systems, boasting a stainless-steel pump housing for durability. It incorporates integrated differential-pressure control and offers a constant-curve mode for optimal performance.

Suitable for

• Domestic hot water recirculation

Features

• Includes three constant pressure curves, three constant speed curves, and three proportional pressure curves.
• Maintains a low Energy Efficiency Index (EEI) for optimal energy performance.
• Requires no maintenance, ensuring hassle-free operation.
• Operates quietly with minimal noise emission.
• Facilitates straightforward installation for user convenience.

Model

• ALPHA1 25-80 N 130
• ALPHA1 25-60 N 180
• ALPHA1 25-40 N 180
• ALPHA1 25-40 N 130
• ALPHA1 20-60 N 150
• ALPHA1 20-40 N 150

Performance Curve

Dimensions

ALPHA1 L is an efficient circulator pump tailored for heating systems. It serves as a versatile option, capable of functioning independently or integrating seamlessly into existing systems, whether as a replacement or in new installations.

Features

• Offers three constant-curve/constant-speed options.
• Features dedicated modes for both radiator and underfloor heating.
• Allows speed control through a low-voltage PWM (Pulse Width Modulation) signal profile A for heating, a method of generating an analog signal from digital sources.
• Maintains a low Energy Efficiency Index (EEI) for optimal energy performance.
• Equipped with a deblocking device for enhanced functionality.
• Requires no maintenance, ensuring long-term reliability.
• Operates quietly with minimal noise emission.
• Facilitates straightforward installation for user convenience.

Model

• ALPHA1 L 25-60 180
• ALPHA1 L 25-60 130
• ALPHA1 L 25-40 180
• ALPHA1 L 25-40 130

Performance Curve

Dimensions

ALPHA SOLAR, engineered specifically for thermal solar systems, is a circulator pump boasting three constant-curves modes. Moreover, its speed can be precisely regulated via a low-voltage PWM signal originating from a solar controller.

Features

• Consistently maintained speed.
• Utilizes PWM C profile, a digital source method for generating an analog signal.
• Achieves Low EEI (Energy Efficiency Index).
• Maintenance-free operation.
• Minimal noise emission.
• Straightforward installation process.

Model

• ALPHA SOLAR 25-145 N 180
• ALPHA SOLAR 25-145 180
• ALPHA SOLAR 25-75 N 180
• ALPHA SOLAR 25-75 180
• ALPHA SOLAR 25-75 130
• ALPHA SOLAR 15-75 130

Suitable for

• Domestic heating

Duty Range

• Max flow: 3 m³/h
• Head max: 15 m
• Liquid temperature: 0 .. 110 °C
• p max: 10 bar

Performance Curve

Dimensions

The ALPHA3 circulator pump is tailored for heating systems and offers complete control through the Grundfos GO Remote app. This intuitive application enables seamless hydronic balancing of both radiator and underfloor heating systems, simplifying the process for users.

Features

• Effortless setting, control, and monitoring via Grundfos GO Remote for a streamlined experience.
• Features radiator and underfloor heating modes with AUTOADAPT functionality.
• Offers proportional pressure, constant pressure, and constant curve settings with adjustable setpoints within the selected range.
• Allows personalized scheduling with a real-time clock for enhanced convenience.
• Includes a summer-mode function for seasonal optimization.
• Ensures firmware upgrades to keep the pump current and ready for future digital enhancements.
• Conducts automatic pump-venting process followed by a return to initial settings.
• Employs a motor based on permanent-magnet rotor/compact-stator technology for efficient performance.
• Incorporates built-in electrical and thermal protection for pump safety.
• Achieves a Low EEI (Energy Efficiency Index) for energy savings.
• Requires no maintenance and operates quietly for a peaceful environment.

Duty Range

• Maximum flow rate, Q: 3.8 m3/h
• Maximum head, H: 8 m
• Maximum system pressure: 1.0 MPa (10 bar)
• Liquid temperature: 2 to 110 °C

Model

• ALPHA3 32-80 180
• ALPHA3 25-80 180
• ALPHA3 25-80 130
• ALPHA3 25-60 180
• ALPHA3 25-60 130
• ALPHA3 25-40 180
• ALPHA3 15-80 130
• ALPHA3 15-60 130

Performance Curve

Dimensions