Grundfos MAGNA1 40-180F (250) Variable Speed Circulator 240V

Purpose-built circulator for hot-water and heating systems: The Grundfos MAGNA1 40-180F (250) is a variable-speed circulator designed to circulate water in heating and domestic hot-water systems, including main-pump and mixing-loop applications, and to support systems with hot-water priority.

• Variable-speed control with nine light-field pump-setting indication and selectable curves: three proportional-pressure, three constant-pressure and three fixed-speed curves.
• Performance and electrical data: 240V 1Ph 50Hz power, max flow up to 27 m3/h, and max head up to 17 m.
• Mechanical and service facts: 250 mm port-to-port dimension, 40 mm flanged connections, cast-iron construction, and maintenance-free operation.
• Operating range and rating: suitable pumped liquid is water; liquid temperature range −10 to 110 °C; EuP-ready with an 'A' rating noted for the model.
• Physical and warranty details: dimensions 250 mm (h) × 234 mm (w) × 369 mm (d), weight 17.7 kg, manufacturer warranty 2 years.

Use this circulator where variable flow and hot-water priority are needed: the external signal option forces operation on the maximum curve for priority situations such as solar-heating integration.