4
CONTENTS
Page
1. Symbols used in this document 4
2. General description 4
3. Applications 4
3.1 Pumped liquids 4
4. Installation 5
4.1 Changing the control box position 5
4.2 Two pumps in parallel 5
4.3 Check valve 5
4.4 Frost protection 5
5. Electrical connection 6
5.1 Supply voltage 6
5.2 Connection diagram 7
6. Start-up 8
7. Functions 9
7.1 Control modes 10
7.2 Selection of control mode 11
7.3 Automatic night-time duty 12
7.4 Constant-curve duty 12
7.5 Max. or min. curve duty 12
7.6 Temperature influence 12
7.7 External start/stop 13
7.8 Signal relay 13
7.9 Indicator lights 13
7.10 Expansion modules 14
7.11 GENI module 14
7.12 LON module 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
10. Megging 23
11. Technical data 24
12. Disposal 24
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 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 optimize the setting of the pump duty
point,
• systems with variable supply-pipe temperature.
GRUNDFOS MAGNA pumps can be used in snow-
melting applications. To avoid condensation in the
control box, the pump should not be installed on the
return side.
3.1 Pumped liquids
Thin, clean, non-aggressive and non-explosive liquids,
not containing solid particles, fibers or mineral oil.
In heating systems, the water should meet the
requirements of accepted standards on water quality
in heating systems.
In domestic hot-water systems, it is advisable to
use GRUNDFOS MAGNA pumps only for water with
a degree of hardness lower than approx. 17 grains/
gallon (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!
If these safety instructions are not
observed, it may result in malfunction
or damage to the equipment!
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.
Grundfos.bk Page 4 Friday, January 15, 2010 3:23 PM
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