6
CONTENTS
Page
1. General description 6
2. Applications 6
2.1 Pumped liquids 6
3. Installation 7
3.1 Changing the control box position 7
3.2 Twin-head pumps 7
3.3 Non-return valve 7
3.4 Frost protection 7
4. Electrical connection 8
4.1 Supply voltage 8
4.2 Connection to the electricity supply 8
5. Start-up 8
5.1 Condensed water in control box 8
6. Functions 9
6.1 Control modes 10
6.2 Selection of control mode 11
6.3 Automatic night-time duty 11
6.4 Constant-curve duty 12
6.5 Max. or min. curve duty 12
6.6 Temperature influence 12
6.7 Expansion modules 13
6.8 Relay module 13
6.9 GENI module 13
6.10 Connection to LON network 14
7. Setting the pump 14
7.1 Factory setting 15
7.2 Control panel 15
7.3 R100 remote control 16
7.4 R100 display overview 17
7.5 Menu OPERATION 18
7.6 Menu STATUS 18
7.7 Menu INSTALLATION 19
7.8 Priority of settings 20
8. Fault finding chart 21
8.1 Checking the module 22
9. Megging 23
10. Technical data 24
11. Disposal 24
1. General description
The GRUNDFOS MAGNA Series 2000 is a complete
range of circulator pumps with integrated differential
pressure control enabling adjustment of pump per-
formance to the actual system requirements. In
many systems, this will reduce the power consump-
tion 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.
2. 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 desira-
ble to optimise the setting of the pump duty point,
• systems with variable flow-pipe temperature.
2.1 Pumped liquids
Thin, clean, non-aggressive and non-explosive liq-
uids, not containing solid particles, fibres or mineral
oil.
In heating systems, the water should meet the re-
quirements 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.
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local regula-
tions and accepted codes of good prac-
tice.
The pump must not be used for the trans-
fer of inflammable liquids such as diesel
oil, petrol or similar liquids.
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