MAGNA3 D 40-120 F Circulating Pump

The Grundfos MAGNA3 D 40-120 F circulator pump is a high-efficiency solution designed to optimise heating and cooling systems in commercial buildings. This wet rotor pump is notable for its adaptability, ease of installation, and advanced technology, making it the perfect choice for construction projects requiring precise control and energy efficiency. Its robust design and innovative features enable reliable performance in district heating and air conditioning applications, ensuring optimal operation under various conditions.

The MAGNA3 D 40-120 F is distinguished by incorporating three multi-pump operating modes that enhance flexibility and operational safety:

• Alternation: One head operates while the other remains idle. Switching between heads is based on operating time or energy consumption, and if one fails, the other automatically activates.
• Standby: The same head is always in operation, but the standby head will activate if it detects a failure in the primary, preventing jams through periodic starts.
• Cascade: Both heads can operate simultaneously or alternate to match system consumption, ensuring a constant supply according to needs.

The pump offers advanced technical features that facilitate its integration into any system:

• Colour display with 3D infographics for intuitive visualisation of pump status and parameters.
• Low energy efficiency index (EEI) < 0.19, contributing to reduced energy consumption.
• Advanced connectivity with multiple communication protocols via CIM cards (optional), and start/stop options through digital inputs.
• Integrated sensors for temperature and differential pressure for automated system control.
• Grundfos Eye, providing real-time visual information on pump status.
• Monitoring and configuration via the Grundfos GO app, allowing remote adjustments and diagnostics.

Main technical data:

• Nominal flow rate: 13.3 m³/h
• Nominal head: 7.417 m
• Liquid temperature range: -10 to 110 °C
• Operating temperature: 60 °C
• Maximum working pressure: 10 bar
• Materials: Cast iron body, EN 1561 EN-GJL-250 housing, composite impeller.
• Connection: DIN, size DN 40, nominal pressure PN 6/10
• Port-to-port length: 250 mm
• Electrical power: 427 W max, 16 W min.
• Nominal voltage: 1 x 230 V
• Current consumption: 0.18 A min / 1.91 A max.
• Weight: 31.6 kg net, 35.4 kg gross

Additional advantages:

• Advanced control modes: AutoAdapt, FlowAdapt, proportional, constant, and temperature control.
• Automatic night mode: Energy saving during low demand periods.
• FlowLimit function and thermal monitoring (requires additional sensor) for greater precision in system management.

The Grundfos MAGNA3 D 40-120 F pump represents a superior choice for those seeking efficiency, flexibility, and advanced control in commercial heating and cooling applications, ensuring reliable operation and significant energy savings.