Grundfos ALPHA3 15-80 (130 mm) Variable-Speed Circulation Pump for 40,000–60,000 kcal/h Boilers, 8 m, 4 m³/h

Grundfos ALPHA3 15-80 Variable-Speed Circulation Pump

The Grundfos ALPHA3 15-80 is a high-efficiency canned rotor circulator designed for fluid circulation in heating systems. It delivers a world-class Energy Efficiency Index (EEI) well below the ErP benchmark, providing significant energy savings.

The Grundfos ALPHA3 15-80 features a built-in Bluetooth radio and is fully controlled by a smart device via the Grundfos GO Remote App. It provides step-by-step guidance for pump configuration, maintenance, and commissioning.

The Grundfos ALPHA3 15-80 communicates directly with the Grundfos GO Balance App, enabling installers to perform quick and easy hydraulic balancing.

The AUTOADAPT function, integrated into the radiator and underfloor heating modes, continuously adjusts pump performance to match the actual heat demand — that is, the size of the system and the varying heat demand throughout the year. AUTOADAPT will find the setting that delivers optimum comfort with minimum energy consumption. It also makes commissioning fast, safe, and straightforward.

Grundfos ALPHA3 15-80 Features

• Radiator mode with AUTOADAPT — a simple choice for two-pipe radiator heating systems
• Underfloor heating mode with AUTOADAPT — a simple choice for underfloor heating systems
• Combined radiator and underfloor heating mode for systems with a mix of heating types
• A real-time clock in programming and summer mode allows you to choose when the pump runs and when to save energy
• Simple user interface — the pump is operated entirely via the Grundfos GO Remote App
• Alarm and warning log with assistance via Grundfos GO Remote, available in the Grundfos ALPHA3 15-80
• No external motor protection required, reducing installation time
• High-torque start improves starting under difficult conditions
• Dry-run protection during start-up and normal operation
• Maintenance-free thanks to the canned rotor design and use of robust components
• ALPHA plug makes electrical installation fast and easy
• Insulation shells are supplied with the pumps to minimize heat loss in heating systems.

In addition, the Grundfos ALPHA3 15-80 pump also has three control modes with an incremental setpoint adjustment that allows the pump setting to be set to a specific duty point:

• proportional pressure control
• constant pressure control
• constant curve mode

The display shows actual power consumption in Watts or actual flow rate in m³/h. The LEDs indicate the actual operating status.

In the Grundfos ALPHA3 15-80, the pump design and selected materials contribute to a long service life. The pump self-vents through the system, which facilitates easy commissioning.

The compact design with a pump head featuring an integrated control box fits the most common installations. The pump and motor form an integrated unit without a mechanical seal. The bearings are lubricated by the pumped liquid. These structural features ensure maintenance-free operation.

In the Grundfos ALPHA3 15-80, the pump casing is made of cast iron. Both the pump casing and pump head are electroplated to enhance corrosion resistance.

The motor is a synchronous permanent-magnet motor characterized by high efficiency. The pump speed is controlled by an integrated variable frequency drive (VFD) built into the control box.