Grundfos magna3 User Manual

Product range
MAGNA3
2
7
2. Product range
Pump selection
All pumps have a "best point" (η
max
), indicating where
the pump is working most efficiently.
Consider the parameters in the following section.
Pump size
The system characteristic is used together with the
performance curve of the pump for sizing and correct
pump selection.
The selection of pump size must be based on the
following:
• required maximum flow
• maximum pressure loss in the system.
Refer to the system characteristics to determine the
duty point. See fig. 7.
Fig. 7 System characteristic
Operating conditions
You must check whether the operating conditions are
fulfilled, i.e:
• liquid quality and temperature
• ambient conditions
• minimum inlet pressure
• maximum operating pressure.
See also Operating conditions, page 32.
Closed valve operation
A MAGNA3 pump can operate at any speed against a
closed valve for several days without damage to the
pump. However, Grundfos recommends to operate at
the lowest possible speed curve to minimize energy
losses. There are no minimum flow requirements.
Note: Do not close inlet and outlet valves
simultaneously, always keep one open when the pump
is running. Media- and ambient temperatures must
never exceed the specified temperature range.
Cast iron Stainless steel (N)
Page reference
115 V 230 V 115 V 230 V
Single-head pump models
MAGNA3 32-60 F (N) 98126820 98126822 43
MAGNA3 32-100 F (N) 98126824 98126826 44
MAGNA3 40-80 F (N) 98126800 98126828 98126802 98126830 45
MAGNA3 40-120 F (N) 98126804 98126832 98126806 98126834 46
MAGNA3 40-180 F (N) 98126808 98126836 98126810 98126838 47
MAGNA3 50-80 F (N) 98126812 98126840 98126814 98126842 48
MAGNA3 50-150 F (N) 98126816 98126844 98126818 98126846 49
MAGNA3 65-120 F (N) 98124696 98126848 98124702 98126850 50
MAGNA3 65-150 F (N) - 98126852 - 98126854 51
MAGNA3 80-100 F (N) - 98126856 - 98126858 53
MAGNA3 100-120 F (N) - 98126860 - 98126862 55
Twin-head pump models
MAGNA3 D 65-150 F - 98126863 - - 52
MAGNA3 D 80-100 F - 98126864 - - 54
MAGNA3 D 100-120 F - 98126865 - - 56
TM02 2040 3301
Q
Duty point
H

Grundfos magna3 Specifications

General

Liquid Temperature Range	-10°C to +110°C
Max Operating Pressure	16 bar
Type	Circulator Pump
Series	MAGNA3
Operating Temperature Range	-10°C to +110°C
Ambient Temperature Range	0°C to +40°C
Protection Class	IPX4D
Power Supply	1 x 230 V, 3 x 230 V, 3 x 400 V
Control Mode	Constant pressure, Proportional pressure
Communication	Modbus RTU
Pump Housing	Cast Iron
Impeller	Composite
Enclosure Class	X4D
Approvals	CE, EAC
Connection	Flange
Weight	Varies depending on model
Power Consumption	Varies depending on model