English (US) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1.Limited warranty
2.Symbols used in this document
3.General information
3.1Applications
3.2Pumped liquids
3.3Operating conditions
3.4Frost protection
3.5Insulating shells
3.6Non-return valve
3.7Nameplate
3.8Radio communication
3.9Tools
4.Mechanical installation
4.1Installing the pump
4.2Positioning
4.3Control box positions
4.4Changing the control box position
5.Electrical installation
5.1Supply voltage
5.2Connection to the power supply
5.3Connection diagram
5.4Connection to external controllers
5.5Input/output communication
5.6Priority of settings
6.First start-up
7.Settings
7.1Overview of settings
8.Menu overview
9.Control panel
10.Menu structure
11."Home" menu
12."Status" menu
13."Settings" menu
13.1Setpoint
13.2Operating mode
13.3Control mode
13.4FLOW
13.5Automatic Night Setback
13.6Relay outputs
13.7Setpoint influence
13.8Bus communication
13.9General settings
14."Assist" menu
14.1Assisted pump setup
14.2Setting of date and time
14.3Multi-pump setup
14.4Setup, analog input
14.5Description of control mode
14.6Assisted fault advice
14.7Wireless GENIair
14.8Multi-pump function
15.Selection of control mode
16.Fault finding
16.1Grundfos Eye operating indications
16.2Signalling communication with remote control
16.3Fault finding
17.Sensor
17.1Sensor specifications
LIMIT
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18.Accessories
18.1Grundfos GO Remote
18.2Communication
18.3Fitting the CIM module
19.Technical data
2
20.Disposal
3
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1. Limited warranty
9
Products manufactured by GRUNDFOS PUMPS CORPORATION
(Grundfos) are warranted to the original user only to be free of
defects in material and workmanship for a period of 24 months
from date of installation, but not more than 30 months from date
of manufacture. Grundfos' liability under this warranty shall be
limited to repairing or replacing at Grundfos' option, without
charge, F.O.B. Grundfos' factory or authorized service station,
any product of Grundfos' manufacture. Grundfos will not be liable
for any costs of removal, installation, transportation, or any other
charges which may arise in connection with a warranty claim.
Products which are sold but not manufactured by Grundfos are
subject to the warranty provided by the manufacturer of said
products and not by Grundfos' warranty. Grundfos will not be
liable for damage or wear to products caused by abnormal
operating conditions, accident, abuse, misuse, unauthorized
alteration or repair, or if the product was not installed in
accordance with Grundfos' printed installation and operating
instructions.
To obtain service under this warranty, the defective product must
be returned to the distributor or dealer of Grun dfos' products from
which it was purchased together with proof of purchase and
installation date, failure date, and supporting installation data.
Unless otherwise provided, the distributor or dealer will contact
Grundfos or an authorized service station for instructions. Any
defective product to be returned to Grundfos or a service station
must be sent freight prepaid; documentation supporting the warranty claim and/or a Return Material Authorization must be
included if so instructed.
GRUNDFOS WILL NOT BE LIABLE FOR ANY
INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSSES, OR
EXPENSES ARISING FROM INSTALLATION, USE, OR ANY
OTHER CAUSES. THERE ARE NO EXPRESS OR IMPLIED
WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND
THOSE WARRANTIES DESCRIBED OR REFERRED TO
ABOVE.
Some jurisdictions do not allow the exclusion or
limitation of incidental or consequential damages and some jurisdictions do not allow limit actions on how long implied warranties
may last. Therefore, the above limitations or exclusions may not
Warnin g
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
Warnin g
The use of this product requires experience with
and knowledge of the product.
Persons with reduced physical, sensory or
mental capabilities must not use this product,
unless they are under supervision or have been
instructed in the use of the product by a person
responsible for their safety.
Children must not use or play with this product.
34
34
34
35
36
36
2
apply to you. This warranty gives you specific legal rights and you
Caution
Note
Note
Note
Note
Max. 95 % RH
Enclosure Type 2
may also have other rights which vary from jurisdiction to jurisdiction.
2. Symbols used in this document
Warnin g
If these safety instructions are not observed,
it may result in personal injury.
Warnin g
If these instructions are not observed, it may lead
to electric shock with consequent risk of serious
personal injury or death.
Warnin g
The surface of the product may be so hot that it
may cause burns or personal injury.
Warnin g
Risk of dropping objects which may cause
personal injury.
Warnin g
Escaping vapor involves the risk of personal
injury.
In domestic hot-water systems, we recommend to use MAGNA3
pumps only for water with a degree of hardness lower than
approx. 14 °dH.
In domestic hot-water systems, we recommend to keep the liquid
temperature below 150 °F (+65 °C) to eliminate the risk of lime
precipitation.
Warnin g
Do not use the pump for flammable liquids, such
as diesel oil and gasoline.
Warnin g
Do not use the pump for aggressive liquids, such
as acids and sea water.
English (US)
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.
3. General information
The Grundfos MAGNA3 is a complete range of circulator pumps
with integrated controller enabling adjustment of pump
performance to the actual system requirements. In many
systems, this will reduce the power consumption considerably,
reduce noise from thermostatic radiator valves and similar fittings
and improve the control of the system.
The desired head can be set on the pump control panel.
3.1 Applications
The Grundfos MAGNA3 is designed for circulating liquids in the
following systems:
• heating systems
• domestic hot-water systems
• air-conditioning and cooling systems.
The pump can also be used in the following systems:
• ground source heat pump systems
• solar-heating systems.
TM05 2857 0612
Fig. 1 Pumped liquids
3.2.1 Glycol
The pump can be used for pumping water/ethylene glycol
mixtures up to 50 %.
Maximum viscosity: 50 cSt ~ 50 % water / 50 % ethylene glycol
mixture at +14 °F (-10 °C ).
The pump has a power-limiting function that protects against
overload.
The pumping of glycol mixtures will affect the max. curve and
reduce the performance, depending on the water/ethylene glycol
mixture and the liquid temperature.
To prevent the ethylene glycol mixture from degrading, avoid
temperatures exceeding the rated liquid temperature and
minimize the operating time at high temperatures.
It is important to clean and flush the system before the ethylene
glycol mixture is added.
To prevent corrosion or lime precipitation, check and maintain the
ethylene glycol mixture regularly. If further dilution of the supplied
ethylene glycol is required, follow the glycol supplier's
instructions.
Additives with a density and/or kinematic
viscosity higher than those/that of water will
reduce the hydraulic performance.
3.2 Pumped liquids
The pump is suitable for thin, clean, non-aggressive and
non-explosive liquids, not containing solid particles or fibers that
may attack the pump mechanically or chemically.
In heating systems, the water should meet the requirements of
accepted standards on water quality in heating systems.
3
English (US)
Min./Max.
+14 °F – 230 °F
(-10 °C – +110 °C)
175 psi (12 bar)
1
2
3
4
+32 to +104 °F
(0 to +40 °C)
<43 dB(A)
Caution
Note
Note
Note
Note
Caution
3.3 Operating conditions
Fig. 2 Operating conditions
3.3.1 Liquid temperature
See fig. 2, pos. 1.
Continuously: +14 °F to +230 °F (-10 °C to +110 °C).
Domestic hot-water systems:
• Up to +150 °F (+65 °C).
3.3.2 System pressure
See fig. 2, pos. 2.
The maximum permissible system pressure is stated on the pump
nameplate.
3.3.3 Ambient temperature
See fig. 2, pos. 3.
+32 °F to +104 °F (0 °C to +40 °C).
The control box is air-cooled. Therefore, it is important that the
maximum permissible ambient temperature is not exceeded
during operation.
During transport: -40 °F to +158 °F (-40 °C to +70 °C).
3.3.4 Sound pressure level
See fig. 2, pos. 4.
The sound pressure level of the pump is lower than 43 dB(A).
3.3.5 Approvals
• Conforms to ANSI/UL Standard 778.
• Certified to CAN/CSA Standard C22.2 No. 108.
• The protective earth (ground) symbol identifies any
terminal which is intended for connection to an external
conductor for protection against electrical shock in case of a
fault, or the terminal of a protective earth (ground) electrode.
3.4 Frost protection
If the pump is not used during periods of frost,
necessary steps must be taken to prevent frost
bursts.
Additives with a density and/or kinematic
viscosity higher than those/that of water will
reduce the hydraulic performance.
3.5 Insulating shells
Insulating shells are available for single-head pumps only.
Limit the heat loss from the pump housing and
pipework.
The heat loss from the pump and pipework can be reduced by
insulating the pump housing and the pipework. See fig. 3 and
fig. 10.
• Insulating shells for pumps in heating systems are supplied
with the pump; see fig. 3.
TM05 7662 1413
• For pumps in air-conditioning and cooling systems
(down to +14 ° (-10 °C)) it is required to apply a silicon sealant
to the internal contours of the shell in order to eliminate any air
gaps and prevent condensation between the insulation shell
and pump housing. Alternatively, the pump can also be
insulated manually in accordance with standard insulating
requirements for heating and cooling systems (fig. 10).
The fitting of insulating shells will increase the pump dimensions.
Fig. 3 Fitting insulating shells to the pump
Do not insulate the control box or cover the
control panel.
3.6 Non-return valve
If a non-return valve is fitted in the pipe system (fig. 4), it must be
ensured that the set minimum discharge pressure of the pump is
always higher than the closing pressure of the valve. This is
especially important in proportional-pressure control mode
(reduced head at low flow). The closing pressure of a single
non-return valve is accounted for in the pump settings as the
minimum head delivered is 5 ft (1.5 m).
TM05 2859 0612
TM05 3055 0912
Fig. 4 Non-return valve
4
3.7 Nameplate
RISQUE DE CHOC ELECTRIQUE. HORS DES EQUIPEMENT AVANT ENLEVEMENT DE LA COUVERTURE ET D’ENTRENTIEN. POUR
LE RECCORDEMENT D’ALIMENTATION, EMPLOYEZ DES FILS QUI RESISTENT AU MOINS A 90 °C UTILISEZ UNIQUEMENT DES
CONDUCTEURS DE CUIVRE. POUR RE’DUIRE LES RISQUES DE CHOC E’LECTRIQUE, CONSULTES LE MANUEL D’INSTRUCTIONS
POUR UNE INSTALLATION CORRECTE. EMPLOYER UNIQUEMENT A L’INTERIEUR.
TYPE 2
BOITIER DE TYPE 2
THERMALLY PROTECTED
Nonsubmersible Pump
RISK OF ELECTRIC SHOCK. DE-ENERGIZE EQUIPMENT BEFORE REMOVAL OF COVER & SERVICING. FOR SUPPLY
CONNECTION USE COPPER WIRE SUITABLE FOR 90 °C OR EQUIVALENT. THIS PUMP HAS NOT BEEN INVESTIGATED FOR USE
IN SWIMMING POOL OR MARINE AREAS. TO REDUCE THE RISK OF ELECTRIC SHOCK, SEE INSTRUCTION MANUAL FOR
PROPER INSTALLATION; ACCEPTABLE FOR INDOOR USE ONLY.
PSI
For use with maximum 230° F water
Contains FCC ID: OG3-RADIOM01-2G4
The pump nameplate provides the following information:
Fig. 5 Example of nameplate
Pos.Description
1Product name
2Model
3Production code (year and week)
4Serial number
5Product number
6Enclosure type
7Energy Efficiency Index (EEI)
8Part (according to EEI)
9TF-class
10Minimum current [A]
11Maximum current [A]
12Minimum power [W]
13Maximum power [W]
14Maximum pressure
15Voltage [V] and frequency [Hz]
16QR (Quick Response) code
17Approvals (nameplate)
18Assembled in USA
English (US)
TM05 6381 4612
5
English (US)
1.2 x 8.0TX200.6 x 3.55.0
1
2
3
4
5
6
7
3.8 Radio communication
The wireless radio in this product is class B.
Intended use
This product incorporates a radio for remote control.
The product can communicate with the Grundfos Go Remote and
with other MAGNA3 pumps of the same type via the built-in radio.
Only Grundfos-approved external antennae may be connected to
this product, and only by a Grundfos-approved installer.
3.9 Tools
4. Mechanical installation
4.1 Installing the pump
The MAGNA3 is designed for indoor installation.
The pump must be installed in such a way that it is not stressed
by the pipework.
The pump may be suspended direct in the pipes, provided that
the pipework can support the pump.
Twin-head pumps are prepared for installation on a mounting
bracket or base plate.
To ensure adequate cooling of motor and electronics, the
following must be observed:
• Position the pump in such a way that sufficient cooling is
ensured.
• The temperature of the ambient air must not exceed
+104 °F (+40 °C).
Warnin g
Observe local regulations setting limits for
manual lifting or handling.
Fig. 6 Recommended tools
Pos.ToolSize
1Screwdriver, straight slot 1.2 x 8.0 mm
2Screwdriver, straight slot 0.6 x 3.5 mm
3Screwdriver, torx bitTX20
4Hexagon key5.0 mm
5Open end wrenchDepending on PN size
6Wire cutter
7Pipe wrench
StepActionIllustration
Arrows on the pump housing
indicate the liquid flow direction
through the pump. The liquid
1
flow direction can be horizontal
or vertical, depending on the
control box position.
TM05 6472 4712
TM05 2862 0612
Close the isolating valves and
make sure that the system is not
2
pressurized during the
installation of the pump.
TM05 2863 0612
Mount the pump with gaskets in
3
the pipework.
TM05 2864 0612
Fit bolts and nuts. Use the right
4
size of bolts according to system
pressure.
TM05 2865 0612
6
4.2 Positioning
A
B
CD
Always install the pump with horizontal motor shaft.
• Pump installed correctly in a vertical pipe. See fig. 7, pos. A.
• Pump installed correctly in a horizontal pipe. See fig. 7, pos. B.
• Do not install the pump with vertical motor shaft. See fig. 7,
pos. C and D.
Fig. 7 Pump installed with horizontal motor shaft
4.3 Control box positions
To ensure adequate cooling, the control box must be in horizontal
position with the Grundfos logo in vertical position. See fig. 8.
English (US)
TM05 2866 0712
TM05 2915 0612TM05 5837 4112
Fig. 8 Pump with control box in horizontal position
If the pump head is removed before the pump is installed in the
pipework, pay special attention when fitting the pump head to the
pump housing:
1. Gently lower the pump head with rotor shaft and impeller into
the pump housing.
2. Make sure that the contact face of the pump housing and that
of the pump head are in contact before the clam p is tightened.
See fig. 9.
Fig. 9 Fitting the pump head to the pump housing
7
English (US)
Caution
4.4 Changing the control box position
Warnin g
The warning symbol on the clamp holding the
pump head and pump housing together indicates
that there is a risk of personal injury. See s pecific
warnings below.
Warnin g
When loosening the clamp, do not drop the pump
head.
Single-head pump.
Note: The gap of the clamp can
also be in position 6 o’clock for
the following pump sizes:
4b
• MAGNA3 65-XX
• MAGNA3 80-XX
• MAGNA3 100-XX.
TM05 2899 1912
Warning
Risk of escaping vapor.
Step ActionIllustration
Loosen the screw in the clamp
holding the pump head and
pump housing together.
Warning: If the screw is
1
loosened too much, the pump
head will be completely
disconnected from the pump
housing.
Carefully rotate the pump head
to the desired position.
If the pump head is stuck,
2
loosen it with a light blow of a
rubber mallet.
Position the control box in
horizontal position so that the
Grundfos logo is in vertical
3
position. The motor shaft must
be horizontal.
Due to the drain hole in the
stator housing, position the gap
4
of the clamp as shown in step
4a, 4b, 4c or 4d.
TM05 2867 0612
TM05 2868 0612
TM05 2869 0612
TM05 2870 0612
Twin-head pump.
Position the clamps so that the
gaps point towards the arrows.
4c
They can be in position
3 or 9 o’clock.
Twin-head pump.
Note: The gap of the clamp can
also be in position 6 o’clock for
the following pump sizes:
4d
• MAGNA3 65-XX
• MAGNA3 80-XX
• MAGNA3 100-XX.
Fit and tighten the screw
holding the clamp to minimum
6
6 ± 0.7 ft-lbs
(8 ± 1 Nm).
Fit the insulating shells.
Note: For air conditioning and
cooling systems a silicone
sealant must be applied inside
the insulation shell to eliminate
all air gaps and prevent
condensation between the
7
pump housing and insulation
shell. Alternatively, the pump
may be insulated manually in
accordance with standard
insulation practices for cooling
applications.
TM05 2917 0612 - TM05 2873 0612
TM05 2897 1912
TM05 2872 0612
TM05 2874 0412
Single-head pump.
Position the clamp so that the
gap points towards the arrow.
4a
It can be in position 3 or
9 o’clock.
8
If insulating the pump manually, do not insulate
the control box or cover the control panel.
TM05 2918 0612 - TM05 2871 0612
5. Electrical installation
Note
Note
5.2 Connection to the power supply
Step ActionIllustration
Carry out the electrical connection and protection according to
local regulations.
Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
Warnin g
Never make any connections in the pump control
box unless the electricity supply has been
switched off for at least 5 minutes.
Warnin g
The pump must be connected to an external
mains switch with a contact separation of at least
1/8 inch (3 mm) in each pole.
The ground terminal of the pump must be earth
ground. Grounding or neutralization can be used
for protection against indirect contact.
If the pump is connected to an electric
installation where a Ground Fault Circuit
Interrupt (GFCI) is used as additional protection,
this circuit breaker must trip out when ground
fault currents with DC content (pulsating DC)
occur.
• If rigid conduit is to be used, the hub must be connected to the
conduit system before it is connected to the terminal box of the
pump.
• The pump must be connected to an external mains switch.
• The pump requires no external motor protection.
• The motor incorporates thermal protection against slow
overloading and blocking.
• When switched on via the power supply, the pump will start
pumping after approx. 5 seconds.
The number of starts and stops via the power
supply must not exceed four times per hour.
Remove the front
1
cover from the
control box.
Locate the power
supply plug and
conduit adapter in
2
the box supplied
with the pump.
Connect the
3
conduit adapter to
the control box.
Pull the power
supply cable
through the
4
conduit adapter
and thread on
conduit.
English (US)
TM05 2875 0612
TM05 2876 0612
TM05 2877 0612
TM05 2878 0612
5.1 Supply voltage
1 x 115 V ± 10 %, 50/60 Hz, PE.
1 x 208-230 V ± 10 %, 50/60 Hz, PE.
See Pump Nameplate for rated supply voltage
The voltage tolerances are intended for mains voltage variations.
They should not be used for running pumps at other voltages than
those stated on the nameplate.
Strip the cable
5
conductors as
illustrated.
Connect the cable
conductors to the
power supply plug.
6
L - L or L1
Ground - Ground
N - N or L2
TM05 5534 3812
TM05 2880 0612
9
English (US)
Insert the power
supply plug into
the male plug in
7
the pump control
box.
Tighten the
conduit adapter.
8
Refit the front
cover.
TM05 2881 0612
TM05 2882 0612
Fig. 10 Insulation of pump housing and pipework
10
TM05 5549 3812
5.3 Connection diagram
External switch
Fuse
(min. 10 A, time lag)
ELCB
Note
Note
Max.
250 V AC
2 A AC1
Min.
5 V DC
20 mA
Max.
24 V DC
22 mA
0-10 V DC
4-20 mA
I
NC NO C
S/S
M
I
M
A
IN
24V
Vcc
Signal
Vcc
Signal
3
2
1
Note
Note
Fig. 11 Example of typical connection, 1 x 230 V ± 10 %, 50/60 Hz
All cables used must be connected in
accordance with local regulations.
5.4 Connection to external controllers
English (US)
TM03 2397 0312
Fig. 12 Connection diagram
Warnin g
Wires connected to supply terminals, outputs
NC, NO, C and start/stop input must be separated
from each other and from the supply by
reinforced insulation.
Concerning demands on signal wires and signal transmitters,
see section 19. Technical data.
Use screened cables for external on/off switch, digital input,
sensor and setpoint signals.
All cables used must be heat-resistant up to
+185 °F (+85 °C).
5.5 Input/output communication
• Relay outputs
Alarm, ready and operating indication via signal relay.
• Analog input
0-10 V or 4-20 mA control signal.
To be used for external control of the pump or as sensor input
for the control of the external setpoint.
The 24 V supply from pump to sensor is optional and is
normally used when an external supply is not available.
TM05 2901 1912 - TM05 3343 1212
11
English (US)
NC NO CNC NO C
Alarm
Operation
Relay 1Relay 2
132
NCNOC
132
NC NO C
12 3
NC NO C
132
NCNOC
132
NC NO C
12 3
NC NO C
132
NCNOC
132
NC NO C
12 3
NC NO C
S/S
M
I
M
A
On/off timer
Start/stop
S/S
Q
H
S/S
Q
H
5.5.1 Relay outputs
See fig. 12, pos. 1.
The pump incorporates two signal relays with a potential-free
changeover contact for external fault indication.
The function of the signal relay can be set to "Alarm", "Ready" or
"Operation" on the pump control panel or with the Grundfos GO
Remote.
The relays can be used for outputs up to 250 V and 2 A.
Fig. 13 Relay output
5.5.2 Digital inputs
See fig. 12, pos. 2.
The digital input can be used for external control of start/stop or
forced max. or min. curve.
If no external on/off switch is connected, the jumper between
terminals Start/Stop (S/S) and frame ( ) should be maintain ed.
This connection is the factory setting.
TM05 3338 1212
Contact symbolFunction
NCNormally closed
NONormally open
CCommon
The functions of the signal relays appear from the table below:
Signal relay Alarm signal
Not activated:
• The power supply has been switched off.
• The pump has not registered a fault.
Activated:
• The pump has registered a fault.
Signal relay Ready signal
Not activated:
• The pump has registered a fault and is
unable to run.
Activated:
• The pump has been set to stop, but is ready
to run.
• The pump is running.
Signal relay Operating signal
Not activated:
• The pump is not running.
Fig. 14 Digital input
Contact symbolFunction
M
A
M
I
Max. curve
100 % speed
Min. curve
25 % speed
S/SStart/Stop
Frame connection
External start/stop
The pump can be started or stopped via the digital input.
Start/stop
Normal duty
Note: Factory setting with
jumper between S/S and .
TM05 3339 1212
12
Activated:
• The pump is running.
Stop
External forced max. or min. curve
M
A
M
A
Q
H
M
I
M
I
Q
H
signal
sensor
Vcc
24V
I
N
signal
sensor
Vcc
24V
I
N
signal
sensor
Vcc
I
24V
I
N
24V
IN
Vcc
Signal
24V
BMS
PLC
The pump can be forced to operate on the max. or min. curve via
the digital input.
Max. curve
H
Normal duty
Q
Max. curve
Min. curve
H
Normal duty
Q
Min. curve
Select the function of the digital input on the pump control panel
or with the Grundfos GO Remote.
5.5.3 Analog input
See fig. 12, pos. 3.
The analog input can be used for the connection of an external
sensor for measuring temperature, pressure, flow or other
parameter. See fig. 17.
It is possible to use sensor types with 0-10 V or 4-20 mA signal.
The analog input can also be used for an external signal for the
control from a BMS system or similar control system. See fig. 18.
• When the input is used for the heat energy meter, a
temperature sensor must be installed in the return pipe.
• If the pump is installed in the return pipe of the system, the
sensor must be installed in the flow pipe.
• If the constant-temperature control mode has been enabled
and the pump is installed in the flow pipe of the system, the
sensor must be installed in the return pipe.
• If the pump is installed in the return pipe of the system, the
built-in temperature sensor can be used.
The selection of sensor type (0-10 V or 4-20 mA) can be changed
on the pump control panel or with the Grundfos GO Remote.
English (US)
TM05 2948 0612TM05 2947 1212TM05 2888 0612
Fig. 16 Analog input for external sensor, 4-20 mA
Fig. 17 Examples of external sensors
Fig. 18 Examples of external signal for the control via
BMS/PLC
TM05 3221 0612
Fig. 15 Analog input for external sensor, 0-10 V
13
English (US)
5.6 Priority of settings
The external forced-control signals will influence the settings
available on the pump control panel or with the Grundfos GO
Remote. However, the pump can always be set to max. curve
duty or to stop on the pump control panel or with the
Grundfos GO Remote.
If two or more functions are enabled at the same time, the pump
will operate according to the setting with the highest priority.
The priority of the settings is as shown in the table below.
Example: If the pump has been forced to stop via an external
signal, the pump control panel or the Grundfos GO Remote can
only set the pump to max. curve.
As illustrated in the table, the pump does not react to external
signals (max. curve and min. curve) when it is controlled via bus.
For further details, please contact Grundfos.
Pump control
panel or
Grundfos GO
Remote
External
signals
Bus signal
14
6. First start-up
Do not start the pump until the system has been filled with liquid
and vented. Furthermore, the required minimum inlet pressure
must be available at the pump inlet. See section 19. Technical
data.
The system cannot be vented through the pump. The pump is
self-venting.
StepActionIllustration
Switch on the power supply to the pump.
1
Note: When switched on, the pump will start in
AUTO
after approx. 5 seconds.
ADAPT
English (US)
TM05 2884 0612
2
After a few seconds, the pump display will change to the
start-up guide.
Pump display at first start-up.
TM05 2885 0612
The start-up guide will guide you through the general
settings of the pump, such as language, date and time.
3
If the buttons on the pump control panel are not touched
for 15 minutes, the display will go into sleep mode. When
a button is touched, the "Home" display will appear.
TM05 2886 0612
When the general settings have been made, select the
4
desired control mode or let the pump run in AUTO
For additional settings, see section 7.
Settings
.
ADAPT
.
15
TM05 2887 0612
English (US)
7. Settings
7.1 Overview of settings
All settings can be made on the pump control panel or with the Grundfos GO Remote.
Heat energy meterPump numberPump communication fault
Heat powerGeneral settingsInternal fault
Heat energyLanguageInternal sensor fault
Flow rateSet date and timeDry running
VolumeSelect date formatForced pumping
Hours counterSet dateUndervoltage
Temperature 1Select time formatOvervoltage
Temperature 2Set timeExternal sensor fault
Differential temp.Units
Work logSI or US units
Operating hoursCustomized units
Trend dataPressure
Duty point over timeDifferential pressure
3D showing (Q, H, t)Head
3D showing (Q, T, t)Level
3D showing (Q, P, t)Flow rate
3D showing (T, P, t)Volume
Fitted modulesTemperature
Date and timeDifferential temp.
DatePower
TimeEnergy
Pump identificationEnable/disable settings
Multi-pump systemDelete history
Operating statusDelete work log
Operating mode, fromDelete heat energy data
Control modeDelete energy consumption
System performanceDefine Home display
Duty pointSelect Home display type
Resulting setpointList of data
System identificationGraphical illustration
Power and energy consumptionDefine Home display contents
Power consumptionList of data
Energy consumptionGraphical illustration
Other pump 1, multi-pump sys.Display brightness
LIMIT
Brightness
Return to factory settings
Run start-up guide
Date format, date and time
ADAPT
ADAPT
English (US)
17
English (US)
Note
Note
9. Control panel
Warnin g
At high liquid temperatures, the pump housing
may be so hot that only the control panel should
be touched to avoid burns.
Fig. 19 Control panel
ButtonFunction
Goes to the "Home" menu.
Returns to the previous action.
Navigates between main menus, displays and
digits.
When the menu is changed, the display will always
show the top display of the new menu.
Navigates between submenus.
Saves changed values, resets alarms and expands
the value field.
4. Assist
This menu enables assisted pump setup, provides a short
description of the control modes and offers fault advice.
See section 14. "
Assist
" menu.
11. "Home" menu
Navigation
Home
Press to go to the "Home" menu.
"Home" menu (factory setting)
• Shortcut to control mode settings
• Shortcut to setpoint settings
• Flow rate
• Head.
Navigate in the display with or and change between the two
TM05 7642 1313
shortcuts with or .
The "Home" display can be defined by the user.
See section 13.9.6
Define Home display
.
12. "Status" menu
TM05 7929 1613
10. Menu structure
The pump incorporates a start-up guide which is started at the
first start-up. After the start-up guide, the four main menus will
appear in the display. See section 6. First start-up.
1. Home
This menu shows up to four user-defined parameters with
shortcuts or a graphical illustration of a Q/H performance curve.
See section 11. "
2. Status
This menu shows the status of the pump and system as well as
warnings and alarms. See section 12. "
3. Settings
This menu gives access to all setting parameters. A detailed
setting of the pump can be made in this menu.
See section 13. "
18
Home
" menu.
Status
" menu.
No settings can be made in this menu.
Settings
" menu.
2.1.0.0.0.0 Status
Navigation
Home > Status
Press and go to the "Status" menu with .
"Status" menu
This menu offers the following status information:
• Operating status
• Pump performance
• Power and energy consumption
• Warning and alarm
• Heat energy meter
• Work log
• Fitted modules
• Date and time
• Pump identification
• Multi-pump system.
Navigate between submenus with or .
13. "Settings" menu
H
Q
Max.
Min.
13.2 Operating mode
English (US)
Navigation
Home > Settings
Press and go to the "Settings" menu with .
"Settings" menu
This menu offers the following setting options:
• Setpoint
• Operating mode
• Control mode
•FLOW
LIMIT
• Automatic Night Setback
• Relay outputs
• Setpoint influence
• Bus communication
• General settings.
Navigate between submenus with or .
13.1 Setpoint
3.1.0.0.0.0 Settings
Navigation
Home > Settings > Operating mode
Operating mode
• Normal (control mode)
• Stop
• Min. (min. curve)
• Max. (max. curve).
Setting:
1. Select operating mode with or .
2. Press [OK] to save.
The pump can be set to operate according to the max. or min.
curve, like an uncontrolled pump. See fig. 20.
Fig. 20 Max. and min. curves
3.1.2.0.0.0 Operating mode
TM05 2446 5111
• Normal: The pump runs according to the selected control
mode.
TM05 7925 1613
• Stop: The pump stops.
Navigation
Home > Settings > Setpoint
Setpoint
Set the setpoint so that it matches the system.
Setting:
1. Press [OK] to start the setting.
2. Select digit with and and adjust with or .
• Min.: The min. curve mode can be used in periods in which a
minimum flow is required.
This operating mode is for instance suitable for manual night
setback if Automatic Night Setback is not desired.
• Max.: The max. curve mode can be used in periods in which a
maximum flow is required.
This operating mode is for instance suitable for hot-water
priority.
3. Press [OK] to save.
A too high setting may result in noise in the system whereas a too
low setting may result in insufficient heating or cooling in the
system.
Control modeMeasuring unit
Proportional pressurem, ft
Constant pressurem, ft
Constant temperature°C, °F, K
Constant curve%
19
English (US)
Note
Note
Note
Note
H
Q
H
auto_min
H
fac
A
1
A
3
A
2
H
set1
H
set2
H
Q
Q
max
25 %
90 %
H
auto_min
H
fac
Q
fac
Setting range
H
Q
H
set
H
set
2
13.3 Control mode
Navigation
Home > Settings > Control mode
Control mode
•AUTO
•FLOW
• Prop. press. (proportional pressure)
• Const. press. (constant pressure)
• Const. temp.(constant temperature)
• Constant curve.
Setting:
1. Select control mode with or .
2. Press [OK] to enable.
The setpoint for all control modes, except AUTO
FLOW
"Settings" when the desired control mode has been selected.
All control modes, except "Constant curve", can be combined with
Automatic Night Setback. See section 13.5
Setback
The FLOW
control modes mentioned above. See section 13.4 FLOW
13.3.1 AUTO
The AUTO
performance according to the actual system characteristic.
ADAPT
ADAPT
The operating mode must be set to "
before a control mode can be enabled.
, can be changed in the "Setpoint" submenu under
ADAPT
ADAPT
Automatic Night
.
function can also be combined with the last four
LIMIT
ADAPT
control mode continuously adapts the pump
ADAPT
Manual setting of the setpoint is not possible.
Normal
and
"
LIMIT
.
A1:Original duty point.
:Lower registered head on the max. curve.
A
2
:New duty point after AUTO
A
3
:Original setpoint setting.
H
set1
:New setpoint after AUTO
H
set2
:MAGNA3 xx-60: 11.4 ft (3.5 m)
H
fac.
MAGNA3 xx-80: 14.7 ft (4.5 m)
ADAPT
ADAPT
control.
control.
MAGNA3 xx-100: 18 ft (5.5 m)
MAGNA3 xx-120: 21.3 ft (6.5 m)
MAGNA3 xx-150: 26.2 ft (8.0 m)
3.1.3.0.0.0 Control mode
H
auto_min
The AUTO
MAGNA3 xx-180: 31.1 ft (9.5 m).
:A fixed value of 4.9 ft (1.5 m).
control mode is a form of proportional-pressure
ADAPT
control where the control curves have a fixed origin, H
The AUTO
for heating systems and is not recommended for air-conditioning
control mode has been developed specifically
ADAPT
and cooling systems.
To reset AU TO
settings
.
13.3.2 FLOW
When FLOW
ensure that the flow never exceeds the entered FLOW
The setting range for the FLOW
, see section 13.9.8
ADAPT
ADAPT
is selected, the pump will run AUTO
ADAPT
is 25 to 90 % of the Q
LIMIT
Return to factory
the pump.
The factory setting of the FLOW
AUTO
Fig. 22 FLOW
factory setting meets the max. curve. See fig. 22.
ADAPT
ADAPT
is the flow where the
LIMIT
13.3.3 Proportional pressure
The pump head is reduced at decreasing water demand and
increased at rising water demand. See fig. 23.
The setpoint can be set within the range from 1 meter (3.28 ft) to
approx. 1 meter (3.28 ft) below the maximum head, depending o n
pump type.
auto_min
ADAPT
value.
LIMIT
max
.
and
of
TM05 3334 1212 TM05 2448 1212
TM05 2452 1312
Fig. 21 AUTO
When the AUTO
approx. 55 % of its maximum head, and then adjust its
performance to A
When the pump registers a lower head on the max. curve, A
AUTO
lower control curve, H
pump will adjust its performance to A
20
ADAPT
function will automatically select a correspondingly
will start with the factory setting, H
ADAPT
control mode has been enabled, the pump
ADAPT
. See fig. 21.
1
set2
. If the valves in the system close, the
= H
fac
, corresponding to
set1
.
3
, the
2
Fig. 23 Proportional pressure
13.3.4 Constant pressure
Note
Note
H
Q
H
Q
Note
Note
Note
Note
H
Q
Δt
t
The pump maintains a constant pressure, irrespective of water
demand. See fig. 24.
Fig. 24 Constant pressure
13.3.5 Constant temperature
This control mode ensures a constant temperature. Constant
temperature is a comfort control mode that can be used in
domestic hot-water systems to control the flow to maintain a fixed
temperature in the system. See fig. 25. When this control mode is
used, no balancing valves must be installed in the system.
If the pump is installed in the return pipe of the system, the
internal temperature sensor can be used. In this case, the pump
must be installed as close as possible to the consumer (radiator,
heat exchanger, etc.).
If the pump is installed in the flow pipe, an external temperature
sensor must be installed in the return pipe of the system. The
sensor must be installed as close as possible to the consumer
(radiator, heat exchanger, etc.).
The constant-temperature control mode also reduces the risk of
bacterial growth (for example Legionella) in the system.
It is possible to set the sensor range:
• min. +14 °F (-10 °C)
• max. +266 °F (+130 °C).
To ensure that the pump is able to control, we
recommend to set the sensor range between
+3 °F and +257 °F (-5 and +125 °C).
13.3.6 Differential temperature
This control mode ensures a constant differential temperature drop
across a heating system.
The pump should be installed in the flow pipe so the built-in sensor
measures the fluid temperature going out to the load. An external
temperature sensor must be installed in the system to measure the
fluid temperature returning from the heating load. In this mode, the
pump will maintain a constant temperature. See fig. 20. and 21.
differential between the pump and the external sensor.
TM05 2449 0312
Fig. 26 Differential temperature
Fig. 27 Differential temperature
Changing Kp and Ti values are only possible with
Grundfos GO.
English (US)
TM05 2451 5111
TM05
Changing the Kp and Ti values will affect all
control modes. If the Control Mode is to be
changed back to another mode you must set the
Kp and Ti values back to default values. For all
other modes the default values are Kp=0.5,
Ti=0.5.
See table, fig. 28.
TM05 2451 5111
Fig. 25 Constant temperature
21
English (US)
t
L
2
[m]
Δt
L2 [m]
L2 [m]
t
Note
Note
H
Q
H [%]
Q [m
3
/h]
100 %
Max. curve
Limited
max. curve
Actual duty point
The table shows the suggested controller settings:
K
p
System/application
Heating
system
1)
Cooling
system
2)
13.3.7 Constant curve
The pump can be set to operate according to a constant curve,
like an uncontrolled pump. See fig. 29.
T
i
The desired speed can be set in % of maximum speed in the
range from 25 to 100 %.
0.5- 0.510 + 5L
0.510 + 5L
0.5- 0.530 + 5L
2
2
2
Fig. 28 Table, suggested controller settings
1. Heating systems are systems in which an increase in pump
performance will result in a rise in temperature at the sensor.
2. Cooling systems are systems in which an increase in pump
performance will result in a drop in temperature at the sensor.
L
= Distance in [m] between pump and sensor.
1
= Distance in [m] between heat exchanger and sensor.
L
2
How to set the PI controller
For most applications, the factory setting of the controller
constants K
and Ti will ensure optimum pump operation.
p
However, in some applications an adjustment of the controller
may be needed.
Proceed as follows:
1. Increase the gain (K
Instability can be seen by observing if the measured value
) until the motor becomes unstable.
p
starts to fluctuate. Furthermore, instability is audible as the
motor starts hunting up and down.
Some systems, such as temperature controls, are
slow-reacting, meaning that it may be several minutes before
the motor becomes unstable.
2. Set the gain (K
motor unstable. This is the correct setting of the gain.
3. Reduce the integral time (T
) to half the value of the value which made the
p
) until the motor becomes
i
unstable.
4. Set the integral time (T
motor unstable. This is the correct setting of the integral time.
) to twice the value which made the
i
General rules of thumb:
• If the controller is too slow-reacting, increase K
.
p
• If the controller is hunting or unstable, dampen the system by
reducing K
or increasing Ti.
p
TM05 2446 0312
Fig. 29 Constant curve
Depending on the system characteristic and the
duty point, the 100 % setting may be slightly
smaller than the pump’s actual max. curve even
though the display shows 100 %. This is due to
power and pressure limitations built into the
pump. The deviation varies according to pump
type and pressure loss in the pipes.
TM05 3041 1212
Fig. 30 Power and pressure limitations influencing the max.
curve
22
13.4 FLOW
H
Q
Q
max
Q
max
Q
limit
25 %
90 %
Setting range
Note
Note
LIMIT
13.5 Automatic Night Setback
English (US)
LIMIT
Navigation
Home > Settings > FLOW
FLOW
LIMIT
LIMIT
• Enable FLOWLIMIT function
• Set FLOWLIMIT.
Setting:
1. To enable the function, select "Active" with or and press
[OK].
2. To set the FLOW
, press [OK] to start the setting.
LIMIT
3. Select digit with and and adjust with or .
4. Press [OK] to save.
3.1.5.0.0.0 FLOW
Navigation
Home > Settings > Automatic Night Setback
Automatic Night Setback
To enable the function, select "Active" with or and press
[OK].
Once Automatic Night Setback has been enabled, the pump
automatically changes between normal duty and night setback
(duty at low performance).
Changeover between normal duty and night setback depends on
the flow-pipe temperature.
The pump automatically changes over to night setback when the
built-in sensor registers a flow-pipe temperature drop of more
3.1.6.0.0.0 Automatic Night Setback
than +18 to +27 °F (-8 to -3 °C) within approx. two hours. The
temperature drop must be at least 0.18 °F/min (0.1 °C/min).
Changeover to normal duty takes place without a time lag when
the temperature has increased by approx. +18 °F (-8 °C).
Automatic Night Setback cannot be enabled
when the pump is in constant-curve mode.
13.6 Relay outputs
TM05 2445 1212
Fig. 31 FLOW
The FLOW
control modes:
• Prop. press.
• Const. press.
• Const. temp.
• Constant curve.
A flow-limiting function ensures that the flow never exceeds the
entered FLOW
The setting range for FLOW
pump.
The factory setting of the FLOW
AUTO
ADAPT
LIMIT
function can be combined with the following
LIMIT
value.
LIMIT
is 25 to 90 % of the Q
LIMIT
is the flow where the
factory setting meets the max. curve. See fig. 22.
LIMIT
max
of the
3.1.12.0.0.0 Relay outputs
Navigation
Home > Settings > Relay outputs
Relay outputs
• Relay output 1
• Relay output 2.
The relay outputs can be set to the following:
• Not active
• Ready
• Alarm
• Operation.
The pump incorporates two signal relays, terminals 1, 2 and 3, for
a potential-free alarm signal, ready signal and operating signal.
For further information, see section 5.5.1 Relay outputs.
Set the function of the signal relays, alarm signal (factory setting),
ready signal and operating signal, on the pump control panel.
The output, terminals 1, 2 and 3, is electrically separated from the
rest of the controller.
23
English (US)
Note
Note
rpm
V
Min.
02
Max.
10
Note
Note
H
T [°F]
30 %
68122176
T [°C]
205080
100 %
H
actual
T
actual
H
Q
The signal relay is operated as follows:
• Not active
The signal relay is deactivated.
• Ready
The signal relay is active when the pump is running or has
been set to stop, but is ready to run.
• Alarm
The signal relay is activated together with the red indicator
light on the pump.
• Operation
The signal relay is activated together with the green indicator
light on the pump.
13.7 Setpoint influence
Navigation
Home > Settings > Setpoint influence
Setpoint influence
• External setpoint function
• Temperature influence.
13.7.1 External setpoint function
Range
4-20 mA [0-100 %]
0-10 V [0-100 %]
Control
0-20 % (e.g. 0-2 V) Setpoint = Min.
20-100 % (e.g. 2-10 V)Setpoint = Min. ↔ setpoint
The external setpoint function is an external 0-10 V or 4-20 mA
signal that will control the pump speed in a range from 0 to 100 %
in a linear function. See fig. 32.
Before the "
enabled, the analog input must be set to
"
External setpoint influence
See section 5.5.3 Analog input.
External setpoint function
" via the "
" can be
Assist
" menu.
13.7.2 Temperature influence
When this function is enabled in proportional- or
constant-pressure control mode, the setpoint for head will be
reduced according to the liquid temperature.
Temperature influence can be set to function at liquid
temperatures below +176 °F or +122 °F (80 °C or 50 °C). These
temperature limits are call ed T
relation to the head set (= 100 %) according to the characteristics
. The setpoint is reduced in
max.
below.
3.1.15.0.0.0 Setpoint influence
Fig. 33 Temperature influence
In the above example, T
selected.
= +176 °F (+80 °C) has been
max.
The actual liquid temperature T
to be reduced from 100 % to H
causes the setpoint for head
actual
.
actual
The temperature influence function requires the following:
• Proportional-pressure, constant-pressure or constant-curve
control mode.
• Pump installed in flow pipe.
• System with flow-pipe temperature control.
Temperature influence is suitable for the following systems:
• Systems with variable flows (for example two-pipe heating
systems) in which the enabling of the temperature influence
function will ensure a further reduction of the pump
performance in periods with small heating demands and
consequently a reduced flow-pipe temperature.
• Systems with almost constant flows (for example one-pipe
heating systems and underfloor heating systems), in which
variable heating demands cannot be registered as changes in
the head as is the case with two-pipe heating systems. In such
systems, the pump performance can only be adjusted by
enabling the temperature influence function.
Selection of T
max.
In systems with a dimensioned flow-pipe temperature of:
• up to and including +131 °F (+55 °C),
select T
• above +131 °F (+55 °C), select T
= +122 °F (+50 °C)
max.
= +176 °F (80 °C).
max.
The temperature influence function cannot be
used in air-conditioning and cooling systems.
TM05 7946 1613
Fig. 32 External setpoint function, 0-10 V
24
TM05 3219 1212
13.8 Bus communication
13.8.1 Pump number
Navigation
Home > Settings > Bus communication > Pump number
Pump number
A unique number can be allocated to the pump. This makes it
possible to distinguish between pumps in connection with bus
communication.
13.9 General settings
13.9.1 Language
Set date and time
• Select date format
• Set date
• Select time format
• Set time.
Set the real-time clock in this menu.
Select date format
• YYYY-MM-DD
• DD-MM-YYYY
• MM-DD-YYYY.
Setting:
1. Select "Set date".
3.1.18.1.0.0 Pump number
2. Press [OK] to start the setting.
3. Select digit with and and adjust with or .
4. Press [OK] to save.
Select time format
• HH:MM 24-hour clock
• HH:MM am/pm 12-hour clock.
Setting:
1. Select "Set time".
2. Press [OK] to start the setting.
3. Select digit with and and adjust with or .
4. Press [OK] to save.
13.9.3 Units
English (US)
Navigation
Home > Settings > General settings > Language
Language
The display can be shown in any of the following languages:
GB, BG, CZ, DK, DE, EE, GR, ES, FR, HR, IT, LV, LT, HU, NL,
UA, PL, PT, RU, RO, SK, SI, RS, FI, SE, TR, CN, JP or KO.
Measuring units are automatically changed according to selected
language.
Setting:
1. Select language with and .
2. Press [OK] to enable.
13.9.2 Set date and time
Navigation
Home > Settings > General settings > Set date and time
TM05 7947 1613
Navigation
Home > Settings > General settings > Units
Units
• SI or US units
• Customized units.
Select whether the display should shows SI or US units or select
the desired units for the parameters below.
• Pressure
• Differential pressure
• Head
• Level
• Flow rate
• Volume
• Temperature
• Differential temp.
• Power
• Energy.
Setting:
1. Select parameter and press [OK].
3.1.19.2.0.0 Set date and time
2. Select unit with or .
3. Press [OK] to enable.
If "SI or US units" is selected, the customized units will be reset.
3.1.19.3.0.0 Units
25
English (US)
13.9.4 Enable/disable settings
Navigation
Home > Settings > General settings > Enable/disable settings
Enable/disable settings
In this display, the possibility of making settings can be disabled
for protective reasons.
Select "Disable" with or and press [OK].
The pump will now be locked for settings. Only the "Home"
display will be available.
To unlock the pump and allow settings, press and
simultaneously for at least 5 seconds.
13.9.5 Delete history
Navigation
Home > Settings > General settings > Define Home display
Define Home display
• Select Home display type
• Define Home display contents.
The "Home" display can be set to show up to four user-defined
parameters or a graphical illustration of a performance curve.
Select Home display type
1. Select "List of data" or "Graphical illustration" with or .
2. Press [OK] to save.
To specify the contents, go to "Define Home display contents".
3.1.19.4.0.0 Enable/disable settings3.1.19.5.0.0 Delete history3.1.19.6.0.0 Define Home display
Define Home display contents
1. To set "List of data", press [OK] to start the setting.
A list of parameters will appear in the display.
2. Select or deselect with [OK].
Up to four parameters can be selected.
The selected parameters will be shown as illustrated below.
The arrow icon indicates that the parameter links to the "Settings"
menu and works as a shortcut for quick settings.
Navigation
Home > Settings > General settings > Delete history
Delete history
• Delete work log
• Delete heat energy data
• Delete energy consumption.
It is possible to delete data from the pump, for example if the
pump is moved to another system or if new data are required due
to changes to the system.
Setting:
1. Select the relevant submenu and press [OK].
2. Select "Yes" with or and press [OK] or press to
cancel.
13.9.6 Define Home display
TM05 7929 1613
1. To set "Graphical illustration", press [OK] to start the setting.
2. Select the desired curve and press [OK] to save.
13.9.7 Display brightness
3.1.19.7.1.0 Brightness
Navigation
Home > Settings > General settings > Display brightness
Brightness
1. Press [OK] to start the setting.
2. Set brightness with and .
3. Press [OK] to save.
26
13.9.8 Return to factory settings
14. "Assist" menu
English (US)
Navigation
Home > Settings > General settings > Return to factory settings
Return to factory settings
It is possible to recall the factory settings and overwrite the
current settings. All user settings in the "Settings" and "Assist"
menus will be set back to the factory settings. This also includes
language, units, possible setup of analog input, multi-pump
function, etc.
To overwrite the current settings with the factory settings, select
"Yes" with or and press [OK].
13.9.9 Run start-up guide
Navigation
Home > Settings > General settings > Run start-up guide
Run start-up guide
It is possible to run the start-up guide again. The start-up guide
will guide the user through the general settings of t he pump , su ch
as language, date and time.
To run the start-up guide, select "Yes" with or and press
[OK].
3.1.19.10.1.0 Return to factory settings3.1.19.11.0.0 Run start-up guide
Navigation
Home > Assist
Press and go to the "Assist" menu with .
"Assist" menu
This menu offers the following:
• Assisted pump setup
• Setting of date and time
• Multi-pump setup
• Setup, analog input
• Description of control mode
• Assisted fault advice.
The "Assist" menu guides the user through the setting of the
pump. In each submenu, the user is presented with a guide that
helps throughout the setting.
14.1 Assisted pump setup
This submenu is a step-by-step guide to complete pump setup,
starting with a presentation of the control modes and ending with
the setpoint setting.
14.2 Setting of date and time
See section 13.9.2
Set date and time
.
14.3 Multi-pump setup
This submenu assists the user in setting up a multi-pump system.
See section 14.8 Multi-pump function.
14.4 Setup, analog input
This submenu assists the user in setting up the analog input.
14.5 Description of control mode
This submenu gives a short description of each control mode.
Assist
14.6 Assisted fault advice
This submenu provides information about faults and corrective
actions.
14.7 Wireless GENIair
The pump is designed for multi-pump connection via the wireless
GENIair connection or wired via a bus system
(Building Management System).
The built-in wireless GENIair module enables communication
between pumps and with the Grundfos Go Remote without the
use of add-on modules:
• Multi-pump function.
See section 14.8 Multi-pump function.
• Grundfos GO Remote.
See section 18.1 Grundfos GO Remote.
27
English (US)
14.8 Multi-pump function
The multi-pump function enables the control of single-head
pumps connected in parallel and twin-head pumps without the
use of external controllers. The pumps in a multi-pump system
communicate with each other via the wireless GENIair
connection.
A multi-pump system is set up via a selected pump, i.e. the
master pump (first selected pump). All Grundfos pumps with a
wireless GENIair connection can be connected to the multi-pump
system.
The multi-pump functions are described in the following sections.
14.8.1 Alternating operation
Only one pump is operating at a time. The change from one pump
to the other depends on time or energy. If a pump fails, the other
pump will take over automatically.
Pump system:
• Twin-head pump.
• Two single-head pumps connected in parallel. The pumps
must be of same type and size. Each pump requires a
non-return valve in series with the pump.
14.8.2 Back-up operation
One pump is operating continuously. The back-up pump is
operated at intervals to prevent seizing up. If the duty pump stop s
due to a fault, the back-up pump will start automatically.
Pump system:
• Twin-head pump.
• Two single-head pumps connected in parallel. The pumps
must be of same type and size. Each pump requires a
non-return valve in series with the pump.
14.8.3 Cascade operation
Cascade operation ensures that the pump performance is
automatically adapted to the consumption by switching pumps on
or off. The system thus runs as energy-efficiently as possible with
a constant pressure and a limited number of pumps.
All pumps in operation will run at equal speed. Pump changeover
is automatic and depends on energy, operating hours and fault.
Pump system:
• Twin-head pump.
• Two single-head pumps connected in parallel. The pumps
must be of same type and size. Each pump requires a
non-return valve in series with the pump.
• The control mode must be set to "Const. press." or "Constant curve".
28
15. Selection of control mode
H
Q
H
Q
H
Q
H
set
H
set
2
H
Q
H
Q
System application
Recommended for most heating systems, especially in systems with relatively large pressure losses in the
distribution pipes. See description under proportional pressure.
In replacement situations where the proportional-pressure duty point is unknown.
The duty point has to be within the AUTO
makes the necessary adjustment to the actual system characteristic.
operating range. During operation, the pump automatically
ADAPT
This setting ensures minimum energy consumption and noise level from valves, which reduces operating costs
and increases comfort.
The FLOW
This control mode is suitable for systems where a maximum flow limit, FLOW
continuously monitors and adjusts the flow, thus ensuring that the selected FLOW
control mode is a combination of AUTO
ADAPT
ADAPT
and FLOW
.
LIMIT
, is desired. The pump
LIMIT
is not exceeded.
LIMIT
Main pumps in boiler applications where a steady flow through the boiler is required. No extra energy is used for
pumping too much liquid into the system.
In systems with mixing loops, the control mode can be used to control the flow in each loop.
Benefits:
• Enough water for all loops at peak load conditions if each loop has been set to the right maximum flow.
• The dimensioned flow for each zone (required heat energy) is determined by the flow from the pump.
This value can be set precisely in the FLOW
control mode without the use of pump throttling valves.
ADAPT
• When the flow is set lower than the balancing valve setting, the pump will ramp down instead of losing energy
by pumping against a balancing valve.
• Cooling surfaces in air-conditioning systems can operate at high pressure and low flow.
In systems with relatively large pressure losses in the distribution pipes and in air-conditioning and cooling systems.
• Two-pipe heating systems with thermostatic valves and
– a dimensioned pump head higher than 13 ft (4 meters)
– very long distribution pipes
– strongly throttled pipe balancing valves
– differential-pressure regulators
– large pressure losses in those parts of the system through which the total quantity of water flows
(for example boiler, heat exchanger and distribution pipe up to the first branching).
• Primary circuit pumps in systems with large pressure losses in the primary circuit.
• Air-conditioning systems with
– heat exchangers (fan coils)
– cooling ceilings
– cooling surfaces.
In systems with relatively small pressure losses in the distribution pipes.
• Two-pipe heating systems with thermostatic valves and
– a dimensioned pump head lower than 6.5 ft (2 meters)
– dimensioned for natural circulation
– small pressure losses in those parts of the system through which the total quantity of water flows
(for example boiler, heat exchanger and distribution pipe up to the first branching) or
– modified to a high differential temperature between flow pipe and return pipe (for example district heating).
• Underfloor heating systems with thermostatic valves.
• One-pipe heating systems with thermostatic valves or pipe balancing valves.
• Primary circuit pumps in systems with small pressure losses in the primary circuit.
In heating systems with a fixed system characteristic, for example d omestic h ot-water systems, the control of the
pump according to a constant return-pipe temperature may be relevant.
FLOW
can be used with advantage to control the maximum circulation flow.
LIMIT
Select this control
mode
AUTO
ADAPT
FLOW
ADAPT
Proportional
pressure
Constant pressure
Constant
temperature
English (US)
29
English (US)
H
Q
ΔT
H
Q
System application
In a heating system where a constant temperature drop across the system is desired, constant differential
temperature can be used.
Select this control
mode
Differential
temperature
If an external controller is installed, the pump is able to change from one constant curve to another, depending
on the value of the external signal.
The pump can also be set to operate according to the max. or min. curve, like an uncontrolled pump:
• The max. curve mode can be used in periods in which a maximum flow is required. This operat in g mod e is fo r
instance suitable for hot-water priority.
• The min. curve mode can be used in periods in which a minimum flow is required. This operating mode is for
instance suitable for manual night setback if Automatic Night Setback is not desired.
In systems with pumps operating in parallel.
The multi-pump function enables the control of single-head pumps connected in parallel (two pumps) and
twin-head pumps without the use of external controllers. The pumps in a multi-pump system communicate with
each other via the wireless GENIair connection.
Constant curve
"Assist" menu
"Multi-pump setup"
30
16. Fault finding
Warning
Before dismantling the pump, drain the system or close the isolating valve on either side of the pump. The pumped
liquid may be scalding hot and under high pressure.
16.1 Grundfos Eye operating indications
Grundfos EyeIndicationCause
English (US)
No lights on.
Two opposite green indicator light s running in the
direction of rotation of the pump.
Two opposite green indicator lights permanently
on.
One yellow indicator light running in the direction
of rotation of the pump.
One yellow indicator light permanently on.
Two opposite red indicator lights flashing
simultaneously.
Power off.
Pump not running.
Power on.
Pump running.
Power on.
Pump not running.
Warning.
Pump running.
Warning.
Pump stopped.
Alarm.
Pump stopped.
One green indicator light in the middle
permanently on (in addition to another
indication).
Remote-controlled.
The pump is currently being accessed by the
Grundfos GO Remote.
16.2 Signalling communication with remote control
The centre indicator light in the Grundfos Eye will indicate communication with the Grundfos GO Remote.
The table below describes the desired function of the center indicator light.
CaseDescriptionSignalling by the centre indicator light
Four or five quick flashes once to signal
"I am here".
Flashing continuously with 50 % duty
cycle.
Indicator light permanently on.
Wink
Push me
I am connected
The pump in question is highlighted in the Grundfos GO Remote display.
To inform the user of the location of the highlighted pump, the center
indicator light will flash four or five times once to signal "I am here".
The pump in question is selected/opened in the Grundfos GO Remote
menu. The pump will signal "Push me" to ask the user to select the
pump/allow the pump to exchange data with the Grundfos GO Remote.
The indicator light will flash continuously until a pop-up window asks the
user to press [OK] to allow communication with the Grundfos GO Remote.
The indicator light is signalling that the pump is connected to
Grundfos GO Remote. The indicator light is permanently on as long as the
pump is selected in the Grundfos GO Remote.
31
English (US)
Caution
16.3 Fault finding
A fault indication can be reset in one of the following ways:
• When the fault cause has been eliminated, the pump will
revert to normal duty.
• If the fault disappears by itself, the fault indication will
automatically be reset.
• The fault cause will be stored in the pump alarm log.
Warning and alarm codesFault
Pump communication fault (10)
Alarm
Forced pumping (29)
Alarm
Undervoltage (40, 75)
Alarm
Blocked pump (51)
Alarm
Dry running (57)
Alarm
Internal fault (72, 84, 155, 157)
Warning/alarm
Overvoltage (74)
Alarm
Internal sensor fault (88)
Warning
External sensor fault (93)
Warning
Communication fault between
different parts of the
electronics.
Other pumps or sources force
flow through the pump even if
the pump is stopped.
Supply voltage to the pump
too low.
The pump is blocked.No
No water at the pump inlet or
the water contains too much
air.
Internal fault in the pump
electronics.
Supply voltage to the pump
too high.
The pump is receiving a signal
from the internal sensor which
is outside the normal range.
The pump is receiving a signal
from the external sensor which
is outside the normal range.
Automatic reset
and restart?
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Corrective actions
Replace the pump, or call GRUNDFOS
SERVICE for assistance.
Check the system for defective non-return valves
and replace, if necessary.
Check the system for correct position of
non-return valves, etc.
Check that the power supply is within the
specified range.
Dismantle the pump, and remove any foreign
matter or impurities preventing the pump from
rotating.
Prime and vent the pump before a new start-up.
Check that the pump is operating correctly . If not,
replace the pump, or call GRUNDFOS SERVICE
for assistance.
Replace the pump, or call GRUNDFOS
SERVICE for assistance.
Check that the power supply is within the
specified range.
Check that the plug and cable are connected
correctly in the sensor. The sensor is located on
the back of the pump housing.
Replace the sensor, or call GRUNDFOS
SERVICE for assistance.
Does the electrical signal set (0-10 V or 4-20 mA)
match the sensor output signal?
If not, change the setting of the analog input, or
replace the sensor with one that matches the
setup.
Check the sensor cable for damage.
Check the cable connection at the pump and at
the sensor. Correct the connection, if required.
The sensor has been removed, but the analog
input has not been disabled.
Replace the sensor, or call GRUNDFOS
SERVICE for assistance.
If the power supply cable is damaged, it must be replaced by the manufacturer, the manufacturer’s service partner or
a similarly qualified person.
32
17. Sensor
Nose downwards
5 Nm
Fig. 34 Correct position of sensor
During maintenance and replacement of the sensor, it is
important that the sealing cap is fitted correctly on the sensor
housing.
Tighten the screw holding the clamp to 3.7 ft-lbs (5 Nm).
Warnin g
Before replacing the sensor, make sure that the
pump is stopped and that the system is not
pressurized.
English (US)
TM05 3036 0812
17.1 Sensor specifications
17.1.1 Pressure
Maximum differential pressure
during operation
Accuracy
+32 to +185 °F (0 to +85 °C)
Accuracy
+14 to +32 °F and +185 to +266 °F
(-10 to 0 °C and +85 to +130 °C)
* Full scale.
17.1.2 Temperature
Temperature range during operation
Accuracy
29 psi / 2 bar / 0.2 MPa
2 % *
3 % *
+14 to +266 °F
(-10 to +130 °C)
± 5.6 °F
(± 2 °C)
33
English (US)
Note
Note
Note
Note
18. Accessories
18.1 Grundfos GO Remote
The MAGNA3 is designed for wireless communication with the
Grundfos GO Remote app. The Grundfos GO Remote app
communicates with the pump via radio communication
(wireless GENIair).
The radio communication between the pump and
the Grundfos GO Remote is encrypted to protect
against misuse.
The Grundfos GO Remote app is available from Apple AppStore
and Android market.
The Grundfos GO Remote concept replaces the Grundfos R100
remote control. This means that all products supported by the
R100 are supported by the Grundfos GO Remote.
The Grundfos GO Remote can be used for the following:
• Reading of operating data.
• Reading of warning and alarm indications.
• Setting of control mode.
• Setting of setpoint.
• Selection of external setpoint signal.
• Allocation of pump number making it possible to distinguish
between pumps that are connected via Grundfos GENIbus.
• Selection of function for digital input.
• Generation of reports (PDF).
• Assist function.
• Multi-pump setup.
• Display of relevant documentation.
For function and connection to the pump, see separate
installation and operating instructions for the desired type of
Grundfos GO Remote setup.
18.2 Communication
The pump can communicate via the wireless GENIair connection
or a CIM module.
This enables the pump to communicate with other pumps and
with different types of network solutions.
The Grundfos CIM modules (CIM = Communication Interface
Module) enable the pump to connect to standard fieldbus
networks.
TM05 2710 0612
Fig. 35 Building management system (BMS) with four pumps
connected in parallel
A CIM module is an add-on communication interface module.
The CIM module enables data transmission between the pump
and an external system, for example a BMS or SCADA system.
The CIM module communicates via fieldbus protocols.
A gateway is a device that facilitates the transfer
of data between two different networks based on
different communication protocols.
A CIM module in a CIU unit used together with
GRUNDFOS MAGNA can be reused in MAGNA3.
The CIM module has to be re-configured before it is used in a
MAGNA3 pump. Contact your nearest Grundfos company.
TM05 2911 1312
Fig. 36 Reuse of CIM module
18.3 Fitting the CIM module
Warnin g
Before fitting the module, switch off the power supply. Make sure that the power supply cannot be accidentally
switched on.
StepActionIllustration
1Remove the front cover from the control box.
2Fit the CIM module as illustrated and click it on.
English (US)
TM05 2875 0912
TM05 2914 1112
3
Fit and tighten the screw holding the CIM module and
secure the earth connection.
TM05 2912 1112
For connection to fieldbus networks, see separate
4
installation and operating instructions for the desired
CIM module.
TM05 2913 1112
35
English (US)
19. Technical data
Supply voltage
See Pump Nameplate for Rated Supply Voltage:
1 x 115 V ± 10 %, 50/60 Hz, PE.
1 x 208-230 V ± 10 %, 50/60 Hz, PE.
Motor protection
The pump requires no external motor protection.
Enclosure class
Enclosure Type 2.
Insulation class
F.
Relative air humidity
Maximum 95 %.
Ambient temperature
+32 °F to +104 °F (0 °C to +40 °C).
During transport: -40 °F to +158 °F (-40 °C to +70 °C).
Temperature class
TF110 (EN 60335-2-51).
Liquid temperature
Continuously: +14 °F to +230 °F (-10 °C to +110 °C).
Stainless-steel pumps in domestic hot-water systems:
In domestic hot-water systems, we recommend to keep the liquid
temperature below +150 °F (+65 °C) to eliminate the risk of lime
precipitation.
System pressure
The maximum permissible system pressure is stated on the pump
nameplate:
175 psi (12 bar).
Inlet pressure
Recommended inlet pressures:
Single-head pumps:
• Min. 1.5 psi / 0.10 bar / 0.01 MPa at +167 °F (+75 °C)
• Min. 5 psi / 0.35 bar / 0.035 MPa at +203 °F (+95 °C)
• Min. 9.5 psi / 0.65 bar / 0.065 MPa at +230 °F (+110 °C).
Twin-head pumps:
• Min. 13 psi / 0.90 bar / 0.09 MPa at +167 °F (+75 °C)
• Min. 17.5 psi / 1.20 bar / 0.12 MPa at +203 °F (+95 °C)
• Min. 22 psi / 1.50 bar / 0.15 MPa at +230 °F (+110 °C).
EMC (electromagnetic compatibility)
EN 55014-1:2006, EN 55014-2:1998, EN 61800-3-3:2008 and
EN 61000-3-2:2006.
Sound pressure level
The sound pressure level of the pump is lower than 43 dB(A).
Leakage current
The pump mains filter will cause a discharge current to earth
during operation. I
Consumption when the pump is stopped
1 to 10 W, depending on activity, i.e. reading the display, use of
Grundfos GO Remote, interaction with modules, etc.
leakage
< 3.5 mA.
Input/output communication
External potential-free contact.
Two digital inputs
Analog input
Two relay outputs
cos φ
The MAGNA3 has a built-in active PFC (Power Factor Correctio n)
which gives a cos φ from 0.98 to 0.99, i.e. very close to 1.
Internal potential-free changeover contact.
Maximum load: 250 V, 2 A, AC1.
Minimum load: 5 VDC, 20 mA.
Screened cable, depending on signal level.
20. Disposal
This product has been designed with focus on the disposal and
recycling of materials. The following disposal values apply to all
variants of Grundfos MAGNA3 pumps:
• minimum 85 % recycling
• maximum 10 % incineration
• maximum 5 % depositing.
Values in percent of total weight.
This product or parts of it must be disposed of in an
environmentally sound way according to local regulations.