Grundfos MAGNA3 Permanent Magnet Variable-Speed ​​Circulator Pump: Key Features

1. Core Functional Features

AUTOADAPT

Automatically adjusts operating parameters based on actual system characteristics to optimize energy consumption (default control mode).

FLOWADAPT

Combines AUTOADAPT and FLOWLIMIT functions to limit maximum flow while maintaining system efficiency.

Built-in Sensors

Integrated differential pressure and temperature sensors for real-time system status monitoring.

Multiple Control Modes

Supports proportional pressure, constant pressure, constant temperature, differential temperature control, constant flow, and constant curve operation.

Wireless Multi-Pump Coordination

Enables parallel pump control (e.g., duty/standby/cascade operation) via wireless GENIair connectivity.

2. Energy Efficiency and Savings

Permanent Magnet Motor Technology

Utilizes a 4-pole synchronous permanent magnet (PM) motor, offering efficiency far superior to traditional asynchronous motors.

Variable Speed ​​Control

Integrated frequency converter adjusts speed to match variable flow demands, reducing energy costs.

EEI (Energy Efficiency Index)

Average EEI for single-head pumps is as low as 0.18—an industry-leading figure—delivering energy savings of over 75%.

3. Intelligence and Convenience

Grundfos GO Remote Control

Connects via Bluetooth to a mobile app for parameter setting, data monitoring, and fault diagnosis.

Application Wizard

Built-in guidance function automatically recommends the optimal control mode based on system type (e.g., heating or cooling).

Thermal Energy Metering

Monitors system thermal energy distribution to optimize energy usage (accuracy depends on flow and temperature sensors).

4. Structural Design Highlights

Sealless Design

Fully sealed rotor structure with gasket-only sealing; maintenance-free with a long service life.

Material Selection

Available with cast iron or stainless steel pump housings to suit different media (stainless steel recommended for domestic hot water systems).

Pressure and Temperature Range

Maximum pressure rating of 1.6 MPa (PN16); liquid temperature range of -10°C to +110°C.

5. Additional Features

Automatic Nighttime Cooling

Automatically switches to a low-energy operating mode based on the outlet water temperature.

CIM Module Expansion

Optional communication interface modules (e.g., PROFIBUS, Modbus) available for integration with Building Management Systems (BMS).

FLOWLIMIT (Flow Limitation)

Ensures flow rates do not exceed set values, preventing system overload.

Typical Applications: Heating systems, air conditioning/cooling, ground-source heat pumps, solar heating, and domestic hot water circulation.