Brochure

Product introduction
MAGNA3
1
3
1. Product introduction
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.
Fig. 1 MAGNA3 pump ranges
Features and benefits
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).
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.
Duty range
TM05 7660 1413
Data
MAGNA3 (N)
Single-head pumps
MAGNA3 D
Twin-head pumps
Max. flow rate, Q
346 gpm (78.5 m
3
/h) 570 gpm (150 m
3
/h)
Max. head, H 60 ft (18 m)
Max. system pressure 175 psi (12 bar) (1.2 MPa)
Liquid temperature +14 to +230 °F (-10 to +110 °C)