Grundfos magna3 User Manual

Table of contents
2
MAGNA3
1. Product description 3
Type key 4
Model type 4
Pump heads in twin-head pumps 4
Performance range, MAGNA3 5
Performance range, MAGNA3 D single-head operation
5
Performance range, MAGNA3 D twin-head operation
6
2. Product range 7
3. System applications 9
Heating systems 9
Cooling systems 11
Solar-heating systems 13
4. Functions 14
Control modes: Quick overview 15
Operating modes 17
Control modes 17
Additional control mode features 22
Multipump modes 23
Flow estimation accuracy 24
Readings and settings on the pump 25
Communication 27
5. Operating conditions 32
General recommendations 32
Pumped liquids 33
Electrical data 34
6. Construction 35
7. Installation 37
Mechanical installation 37
Electrical installation 37
Connection to power supply, terminal-connected
versions 38
8. Curve conditions 40
Performance curves 40
Energy efficiency index (EEI) 40
QR code on the pump nameplate 40
Markings and approvals 41
9. Performance curves and technical data 42
10. Accessories 57
Insulating kits for air-conditioning and cooling systems
57
CIM modules 57
Grundfos GO 58
External Grundfos sensors 59
Cable for sensors 60
Blanking flange 60
Pipe connections 61
11. Product numbers 62
Single-head pumps 62
Twin-head pumps 62
12. Grundfos Product Center 63

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