Grundfos ALPHA3 15-50/60 130 High-Efficiency Circulator Pump - App-Controlled for Heating Systems, 230V

The Grundfos ALPHA3 15-50/60 130 High-Efficiency Circulator Pump 99371966 is a compact, app-controlled pump designed for domestic heating systems, featuring AUTOADAPT technology for automatic adjustment and hydronic balancing to optimize energy efficiency.

Product Description

The Grundfos ALPHA3 15-50/60 130 is a high-efficiency circulator pump for circulating liquids in heating systems with variable flow rates. It is completely controlled via the Grundfos GO Remote app, enabling easy hydronic balancing. The pump features AUTOADAPT for automatic optimization of the duty point, reducing energy costs. Suitable for underfloor heating, radiator systems, and domestic hot water recirculation, it replaces older fixed-speed pumps with its compact design and versatile performance.

Key Features

• AUTOADAPT technology: Automatically adjusts to system demands for optimal efficiency.
• App control: Grundfos GO Remote app for hydronic balancing and monitoring.
• Energy efficiency: EEI ≤ 0.20 for low running costs.
• Variable speed: Adjusts between 5m and 6m head for flexible use.
• Compact design: 130 mm port-to-port length for easy replacement.
• Quiet operation: Low noise levels for residential comfort.

Technical Specifications

• Model: ALPHA3 15-50/60 130.
• Max head: 6 m.
• Max flow: 3 m³/h.
• EEI: ≤ 0.20.
• Port-to-port length: 130 mm.
• Connection: G 1 1/2.
• Power supply: 1~230 V, 50/60 Hz.
• Fluid temperature: -10°C to +110°C.
• Max operating pressure: 10 bar.
• Protection class: IP X4D.
• Materials: Cast iron pump housing, composite impeller.

Dimensions & Weights

• L1: 130 mm.
• B1/B2: 54 mm.
• B3/B4: 44 mm.
• H1: 36 mm.
• H2: 104 mm.
• H3: 47 mm.
• Net weight: 1.9 kg.
• Gross weight: 2.0 kg.

System & Application Notes

• Ideal for one- and two-pipe heating systems, underfloor heating, and domestic hot water recirculation.
• Compatible with heating water (VDI 2035) and water-glycol mixtures.
• Installation: Flexible due to compact size; use with union kit for Rp 1" connections.
• Warranty: 2 years.
• Professional installation recommended; ensure proper venting for optimal performance.