Grundfos MAGNA1 100-100F (450) Variable Speed Circulator 240V

The Grundfos MAGNA1 100-100F (450) is a variable-speed circulator pump designed for circulating water in heating and domestic hot-water systems where flow varies. It delivers up to 69 m3/hr flow and a maximum head of 10 m, and its 100 mm flanged connections and 450 mm port-to-port dimension suit inline flanged installations.

• Voltage: 240V 1Ph 50Hz — for single-phase HVAC and hot-water systems.
• Liquid temperature range: -10 to 110 °C — supports a wide range of system temperatures.
• Hydraulic options: three proportional-pressure, three constant-pressure, and three fixed-speed curves — selectable pump control for different system needs.
• Operational benefits: A-rated/EuP ready design, low noise, maintenance-free construction, and nine light fields for pump-setting indication.
• Construction and size: cast-iron body, weight 37.0 Kg, overall dimensions 450 mm (h) x 356 mm (w) x 433 mm (d).

Applications include heating systems, main pumping duties, mixing loops and heating & air‑conditioning installations. The pump accepts an external hot-water priority signal to force operation to the maximum curve when required.