MAGNA3 1 Benefits • • • • • • • • • Unparalleled energy efficiency. Safe selection. Simple installation. Maintenance free. Guided installation. Simple assisted troubleshooting. Easy system optimization. Multi-pump function. External control and monitoring enabled via add-on modules. • No external motor protection required. • The complete range is available for a maximum system pressure of 175 PSI [12 bar]. The Grundfos MAGNA3 circulator pumps are designed for circulating liquids in the following systems: • heating systems • air-conditioning and cooling systems • domestic hot-water systems. • ground source heat pump systems • solar-heating systems. Duty range Data Maximum flow rate, Q Maximum head, H Maximum system pressure Liquid temperature MAGNA3 (N) Single-head pumps MAGNA3 D Twin-head pumps 570 GPM 346 GPM [150 m3/h] [78.5 m3/h] 60 ft [18 m] 175 PSI [1.2 MPa (12 bar)] 14 to 230 F [-10 to +110 °C] Main applications Heating systems • Main pump • mixing loops • domestic hot water • heating surfaces • air-conditioning surfaces. The MAGNA3 circulator pumps are designed for circulating liquids in systems with variable flows where it is desirable to optimize the setting of the pump duty point, thus reducing energy costs. The pump is especially suitable for installation in existing systems where the differential pressure across the pump is too high in periods with reduced flow demand. The pump is also suitable for new systems where automatic adjustment of pump head to actual flow demand is desired, without using expensive bypass valves or similar components. Furthermore, the pump is suitable for systems with hot-water priority as an external signal can immediately force the pump to operate according to the max. curve, for example in solar-heating systems. Fig. 1 MAGNA3 pump ranges Characteristic features • • • • • • • • • • • • • • • AUTOADAPT. FLOWADAPT and FLOWLIMIT. Intuitive user interface with TFT display. Proportional-pressure control. Constant-pressure control. Constant-temperature control. Built-in Grundfos differential-pressure and temperature sensor. Constant-curve duty. Max. or min. curve duty. Automatic Night Setback. Internal motor protection. Heat energy meter. Work log history. Insulating shells supplied with single-head pumps for heating systems. Large temperature range where the liquid temperature and the ambient temperature are independent of each other. TM05 7660 1413 3 Product description 1. Product description
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