MAGNA3 32-120 F Circulator Pump

The Grundfos MAGNA3 32-120 F is a high-efficiency wet rotor circulator pump, specially designed for heating, cooling, and air conditioning systems in commercial buildings. This model stands out for its energy performance, its ability to automatically adapt to the installation, and its advanced control and monitoring options.

Equipped with AutoAdapt technology, the pump adjusts its operation in real-time according to system conditions, optimizing energy consumption and ensuring constant thermal comfort. Its energy efficiency index (EEI) is below 0.19, meeting the highest efficiency standards on the market. Additionally, it integrates advanced functions such as FlowAdapt and FlowLimit, which eliminate the need for external control valves, reducing costs in components and installation.

Its color display with 3D infographics facilitates navigation and parameter adjustment. The pump features configurable relays, analog and digital inputs, as well as the possibility to incorporate CIM communication modules for direct integration into building management systems (BMS) via various protocols such as Modbus, BACnet, or LON.

The MAGNA3 32-120 F model also offers parallel operation capabilities through wireless communication between pumps of the same type and is equipped with integrated temperature and differential pressure sensors. All this allows for efficient flow and thermal energy management, with the option of monitoring through Grundfos GO.

Recommended Applications

• Heating systems in commercial and residential buildings
• Cooling and air conditioning installations
• Mixing loops and air handling units
• Geothermal systems and small chillers
• Integration with Grundfos MIXIT systems

Integrated Control Functions

• AutoAdapt and FlowAdapt: dynamic adjustment and energy saving
• Proportional and constant pressure control
• Constant and differential temperature control (requires additional sensor)
• Constant curve control
• Automatic night function
• Digital input for start/stop
• Configurable status and alarm relays (NO/NC)

Technical Specifications

• Nominal flow rate: 11.22 m³/h
• Head: 7.239 m
• Electrical power: from 15 W to 333 W
• Maximum current consumption: 1.55 A
• Maximum speed: 4,800 rpm
• Protection class: IPX4D | Insulation class F
• Liquid temperature range: -10 °C to 110 °C (60 °C in normal operation)
• Ambient working temperature: 0 °C to 40 °C
• Maximum working pressure: 10 bar
• Connection type: DIN, size DN 32 | PN 6/10
• Length between connections: 220 mm
• Materials: pump body in EN-GJL-250 cast iron, impeller in composite
• Compatibility with pumped liquid: water (density: 983.2 kg/m³)

Logistical Data

• Net weight: 15.2 kg | Gross weight: 16.9 kg
• Transport volume: 0.039 m³
• Country of origin: Germany
• International codes: VVS DK: 380951312 | RSK SE: 5732486 | NRF NO: 9042657

The Grundfos MAGNA3 32-120 F is the perfect choice for installations that demand energy efficiency, precise control, and ease of integration into smart systems. An advanced, versatile solution ready for the current and future requirements of the HVAC sector.