Brochure

Product description
MAGNA3
1
3
1. Product description
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
Fig. 1 MAGNA3 pump ranges
Characteristic features
•AUTO
ADAPT
.
•FLOW
ADAPT
and FLOW
LIMIT
.
• 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.
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].
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.
Data
MAGNA3 (N)
Single-head
pumps
MAGNA3 D
Twin-head pumps
Maximum flow rate, Q
346 GPM
[78.5 m
3
/h]
570 GPM
[150 m
3
/h]
Maximum head, H 60 ft [18 m]
Maximum system pressure 175 PSI [1.2 MPa (12 bar)]
Liquid temperature 14 to 230 F [-10 to +110 °C]
TM05 7660 1413