Circulation pump Grundfos MAGNA3 100-120 F PN10

The Grundfos MAGNA3 circulation pump is the ideal choice for almost any building project, old or new. With its unrivaled energy efficiency, comprehensive range, and built-in communication capabilities, the MAGNA3 is ideal for engineers and designers who want to create high-performance heating and cooling systems. The pump is maintenance-free thanks to its encapsulated rotor design. This also means that the pump and motor form an integral unit with no shaft seal and only two gaskets for sealing. The bearings are lubricated by the pumped liquid. The MAGNA3 has an intuitive display and allows it to connect wirelessly with the Grundfos GO Remote app, giving access to advanced reporting and monitoring. The pump includes fieldbus communication via CIM modules, analog and digital inputs, and configurable relays. Control features include FLOWADAPT, which reduces the need for throttle valves, thus cutting costs on system components.

Rated flow: 38 m³/h
Rated head: 10.08 m
Maximum head: 120 dm
TF class: 110
Type of connection: DIN
Size of connection: DN 100
Pressure rating for connection: PN 10
Port-to-port length: 450 mm
Maximum power input – P1: 1564 W
Mains frequency: 50 / 60 Hz
Rated voltage: 1 x 230 V
Maximum current consumption: 7 A
Net weight: 34 kg
Gross weight: 37.9 kg

The MAGNA3 100-120 F PN10 is a high-efficiency wet-rotor circulation pump designed for demanding heating, cooling, and hot water applications. Its robust construction with cast-iron housing and reinforced composite impeller ensures long service life and reliable operation. Key built-in features include dry-run protection, intelligent electronic control with AUTOADAPT™, and a thermal insulation shell for improved efficiency.

Thanks to these advanced functions, the MAGNA3 100-120 F PN10 is a dependable solution for modern energy-efficient systems, delivering both performance and safety in large-scale installations.

Typical applications

• Primary circulation in large heating systems with radiators, underfloor heating, or mixing circuits
• Domestic hot water recirculation loops
• Cooling and air-conditioning circuits with heat exchangers
• Geothermal pumping and recirculation systems

Important installation & safety information (model-specific)

• Installation only by registered specialist companies.
• Use exclusively in systems compatible with PN 10 pressure class and with matching flanges/gaskets.
• Follow the manufacturer’s installation, operation, and maintenance manuals, and confirm product/system approvals.
• For heat generators: use approved flue-gas systems only and comply with all inspection and servicing requirements.
• For gas appliances: installation, inspection, maintenance, repairs, and gas adjustments may only be carried out by authorised contractors.
• Before installing a new heating system: a prior consultation should address local heat planning considerations and any potential risk of non-profitability, particularly in light of rising CO₂ costs.