6
CONTENTS
Page
Symbols used in this document
General description
Applications
Pumped liquids
Installation
Changing the control box position
Twin-head pumps
Non-return valve
Frost protection
Electrical connection
Supply voltage
Connection to the supply
Start-up
Functions
Control modes
Selection of control mode
Automatic night-time duty
Constant-curve duty
Max. or min. curve duty
Temperature influence
Expansion modules
Relay module
GENI module
7.10 Connection to LON network
Setting the pump
Factory setting
Control panel
R100 remote control
R100 display overview
Menu OPERATION
Menu STATUS
Menu INSTALLATION
Priority of settings
Fault finding chart
Checking the module
Megging
Technical data
Disposal
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.
Summary of Contents for MAGNA 25-100
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