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CONTENTS
Page
1. Symbols used in this document 6
2. General description 6
3. Applications 6
3.1 Pumped liquids 6
4. Installation 7
4.1 Changing the control box position 7
4.3 Twin-head pumps 7
4.4 Non-return valve 7
4.5 Frost protection 8
5. Electrical connection 8
5.1 Supply voltage 8
5.2 Connection to the supply 8
6. Start-up 9
7. Functions 9
7.1 Control modes 10
7.2 Selection of control mode 11
7.3 Automatic night-time duty 11
7.4 Constant-curve duty 12
7.5 Max. or min. curve duty 12
7.6 Temperature influence 12
7.7 Expansion modules 13
7.8 Relay module 13
7.9 GENI module 13
7.10 Connection to LON network 14
8. Setting the pump 14
8.1 Factory setting 14
8.2 Control panel 15
8.3 R100 remote control 16
8.4 R100 display overview 17
8.5 Menu OPERATION 18
8.6 Menu STATUS 19
8.7 Menu INSTALLATION 20
8.8 Priority of settings 21
9. Fault finding chart 22
9.1 Checking the module 23
10. Megging 24
11. Technical data 25
12. Disposal 25
1. Symbols used in this document
2. General description
The GRUNDFOS MAGNA Series 2000 is a complete
range of circulator pumps with integrated differential
pressure control enabling adjustment of pump
performance to the actual system requirements.
In many systems, this will reduce the power
consumption considerably, reduce noise from
thermostatic valves and similar fittings, and improve
the control of the system.
The desired head can be set on the pump control
panel.
3. Applications
The GRUNDFOS MAGNA is designed for circulating
liquids in heating and air-conditioning systems. The
pump can also be used in domestic hot-water
systems.
The pump range is primarily used in
• systems with a variable flow.
The pump range can also be used in
• systems with a constant flow where it is
desirable to optimise the setting of the pump duty
point,
• systems with variable flow-pipe temperature.
3.1 Pumped liquids
Thin, clean, non-aggressive and non-explosive
liquids, not containing solid particles, fibres or
mineral oil.
In heating systems, the water should meet the
requirements of accepted standards on water quality
in heating systems, e.g. the German standard
VDI 2035.
In domestic hot-water systems, it is advisable to
use GRUNDFOS MAGNA pumps only for water with
a degree of hardness lower than approx. 14 °dH.
Warning
Prior to installation, read these
installation and operating instructions.
Installation and operation must comply
with local regulations and accepted
codes of good practice.
Warning
If these safety instructions are not
observed, it may result in personal
injury!
Caution
If these safety instructions are not
observed, it may result in malfunction
or damage to the equipment!
Note
Notes or instructions that make the job
easier and ensure safe operation.
Warning
The pump must not be used for the
transfer of inflammable liquids such as
diesel oil, petrol or similar liquids.
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