Grundfos MAGNA1 N Permanent Magnet Variable Frequency Stainless Steel Shielded Circulating Pump:

High-Efficiency Energy-Saving Technology

Utilizing a permanent magnet synchronous motor and variable frequency drive technology, it achieves significant energy savings (up to 50%) and excellent EEI energy efficiency index.

Power Factor Optimization: Terminal connection type cos φ reaches 0.98-0.99, plug connection type is 0.55-0.98.

Intelligent Control Functions

Multi-Mode Adjustment: Supports proportional pressure (PP1/PP2/PP3), constant pressure (CP1/CP2/CP3), and constant speed curve (I/II/III).

Remote Monitoring: Via Grundfos GO... Remote control enables infrared/radio communication, supporting remote operation from Android/iOS devices.

Dual-head pump redundancy design: Dual pump heads automatically alternate operation (24-hour rotation), supporting master-slave pump pairing and fault switching.

Durable materials and structure:

All-stainless steel pump housing design, highly corrosion-resistant, suitable for domestic hot water, ground source heat pumps, and chlorine-containing environments (Cl-≤150mg/l).
Valve-closed operation capability: Can operate safely for several days under no-flow conditions.

Wide range of applications:

HVAC systems (heating/cooling)
Domestic hot water circulation
Solar/ground source heat pump systems
Industrial circulation systems (liquid temperature range -10 to +110°C)

Safety and maintenance features:

Thermal protection function: Prevents motor overload (TP 211 standard)
Automatic venting design: Dual-head pumps require an Rp 1/4 vent valve.
Fault diagnosis: Alarm codes (such as blockage alarm 51, communication failure 77, etc.) are displayed via Grundfos Eye indicator and GO Remote.

Environmentally friendly design:

85% material recycling rate, compliant with EN standards. 50419 Disposal Standards: Low-noise operation: Sound pressure level 39-55 dB(A) (depending on model)

conditioning, space heating, and hot water supply applications.