6
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
4.2 Twin-head pumps 7
4.3 Non-return valve 7
4.4 Frost protection 8
5. Electrical connection 8
5.1 Supply voltage 8
5.2 Connection diagram 9
6. Start-up 10
7. Functions 11
7.1 Control modes 12
7.2 Selection of control mode 13
7.3 Automatic night-time duty 14
7.4 Constant-curve duty 14
7.5 Max. or min. curve duty 14
7.6 Temperature influence 14
7.7 External start/stop 15
7.8 Signal relay 15
7.9 Indicator lights 15
7.10 Expansion modules 16
7.11 Wiring diagrams for expansion modules 17
7.12 GENI module 18
7.13 LON module 18
8. Setting the pump 19
8.1 Factory setting 19
8.2 Control panel 19
8.3 R100 remote control 21
8.4 R100 display overview 22
8.5 Menu OPERATION 23
8.6 Menu STATUS 24
8.7 Menu INSTALLATION 25
8.8 Priority of settings 26
9. Fault finding chart 27
10. Megging 28
11. Technical data 29
12. Disposal 29
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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