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.
The MAGNA3 circulator pumps are designed for circulating liquids in heating systems with variable flows where you want to optimise the setting of the pump duty point, thus reducing energy costs. The
pumps are also suitable for domestic hot-water systems. Observe local legislation regarding pump
house material. Grundfos strongly recommend that you use stainless-steel pumps in domestic hot-water applications to avoid corrosion.
To ensure correct operation, it is important that the
sizing range of the system falls within the duty range of
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 the head to the actual
flow demand is required, 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 maximum curve, for example in solar-heating