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
4.4Pump head position
4.5Changing the control box position
5.Electrical installation
5.1Supply voltage
5.2Connection to the power supply (models 40-XX,
50-XX, 65-XX, 80-XX, 100-XX)
5.3Connection to the power supply (models 32-XX)
5.4Connection diagram
5.5Input/output communication
5.6Analog input for external sensor
5.7Electrical connection for external sensor
5.8Priority 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
13.1 Setpoint
13.2 Operating mode
13.3 Control mode
13.4 FLOW
13.5 Automatic Night Setback
13.6 Relay outputs
13.7 Setpoint influence
13.8 Bus communication
13.9 General settings
14."Assist" menu
14.1 Assisted pump setup
14.2 Setting of date and time
14.3 Multi-pump setup
14.4 Setup, analog input
14.5 Description of control mode
14.6 Assisted fault advice
14.7 Wireless GENIair
14.8 Multi-pump function
LIMIT
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15.Selection of control mode
16.Fault finding
16.1 Grundfos Eye operating indications
16.2 Signalling communication with remote control
4
4
5
5
5
6
6
6
6
7
8
8
8
8
9
9
9
16.3 Fault finding
17.Sensor
17.1 Sensor specifications
18.Accessories
18.1 Grundfos GO Remote
18.2 Communication
18.3 Fitting the CIM module
19.Technical data
20.Disposal
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.
36
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English (US)
3
English (US)
Caution
Note
Note
1. Limited warranty
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 Grundfos' 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 apply to
you. This warranty gives you specific legal rights and you 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.
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.
4
3. General information
Note
Note
Max. 95 % RH
Enclosure Type 2
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.
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.
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)
TM05 2857 0612
Fig. 1 Pumped liquids
3.2.1 Glycol
The pump can be used for pumping water/glycol mixtures up to
50 %.
Example of a water/ethylene glycol mixture:
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.
5
English (US)
Caution
Note
Note
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)
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 electric shock in case of a
fault, or the terminal of a protective earth (ground) electrode.
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. 13.
• Insulating shells for pumps in heating systems are supplied
with the pump; see fig. 3.
• 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. 13).
The fitting of insulating shells will increase the pump dimensions.
TM05 7662 1413
TM05 2859 0612
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).
3.4 Frost protection
6
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.
TM05 3055 0912
Fig. 4 Non-return valve
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
7
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 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
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 wrench
6Wire cutter
Depending on flange bolt
size
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
8
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.
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 clamp is tightened.
See fig. 9.
English (US)
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.
TM05 2866 0712TM05 2915 0612
Fig. 9 Fitting the pump head to the pump housing
4.4 Pump head 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:
3. Visually check that the floating ring in the sealing system is
centered. See figs. 10 and 11.
4. Gently lower the pump head with rotor shaft and impeller into
the pump housing.
5. Make sure that the contact face of the pump housing and that
of the pump head are in contact before the clamp is tightened.
See fig. 12.
TM05 5837 4112TM05 6650 5012
Fig. 8 Pump with control box in horizontal position
Fig. 10 Correctly centered sealing system
9
English (US)
Caution
Fig. 11 Incorrectly centered sealing system
Observe the position of the clamp before the
clamp is tightened. Incorrect position of the
clamp will cause leakage from the pump and
damage the hydraulic parts in the pump head.
See fig. 12.
4.5 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. S ee specific
warnings below.
Warnin g
When loosening the clamp, do not drop the pump
head.
Warning
Risk of escaping vapor.
Step ActionIllustration
TM05 6651 5012
Loosen the screw in the clamp
holding the pump head and pump
housing together.
Warning: If the screw is loosened
1
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, loosen it
2
with a light blow of a rubber
mallet.
TM05 2867 0612
TM05 2868 0612
Fig. 12 Fitting the pump head to the pump housing
Position the control box in
horizontal position so that the
Grundfos logo is in vertical
3
position. The motor shaft must be
horizontal.
TM05 2869 0612
TM05 5837 4112
Due to the drain hole in the stator
housing, position the gap of the
4
clamp as shown in step 4a, 4b, 4c
or 4d.
TM05 2870 0612
Single-head pump.
Position the clamp so that the gap
4a
points towards the arrow.
It can be in position 3 or 9 o'clock.
TM05 2918 0612 - TM05 2871 0612
10
Caution
Step ActionIllustration
Note
Note
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.
Twin-head pump.
Position the clamps so that the
gaps point towards the arrows.
4c
They can be in position 3 or
9o'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
6
the clamp to minimum
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
7
between the pump housing and
insulation shell. Alternatively, the
pump may be insulated manually
in accordance with standard
insulation practices for cooling
applications.
5. Electrical installation
Carry out the electrical connection and protection according to
TM05 2899 1912
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 power supply has been switched
off for at least 5 minutes.
Warnin g
TM05 2917 0612 - TM05 2873 0612
TM05 2897 1912
• 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
TM05 2872 0612
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.
TM05 2874 0412
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
connected to 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
Interrupter (GFCI) is used as additional
protection, this circuit interrupter must trip out
when ground fault currents with DC content
(pulsating DC) occur.
The number of starts and stops via the power
supply must not exceed four times per hour.
English (US)
If insulating the pump manually, do not insulate
the control box or cover the control panel.
TM05 5549 3812
Fig. 13 Insulation of pump housing and pipework
11
English (US)
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.
5.2 Connection to the power supply (models 40-XX,
50-XX, 65-XX, 80-XX, 100-XX)
Step ActionIllustration
Connect the cable
conductors to the
power supply plug.
6
L - L or L1
Ground - Ground
N - N or L2
Step ActionIllustration
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.
TM05 2880 0612
Insert the power
supply plug into
the male plug in
TM05 2875 0612
7
the pump control
box.
TM05 2881 0612
TM05 2876 0612
Tighten the
conduit adapter.
8
Refit the front
cover.
TM05 2882 0612
Pull the power
supply cable
4
through the
conduit adapter.
Strip the cable
5
conductors as
illustrated.
TM05 2877 0612
TM05 2878 0612
TM05 5534 3812
12
5.3 Connection to the power supply (models 32-XX)
L (L1) N (L2)
Step ActionIllustration
Remove two
screws.
Remove the front
cover from the
1
control box and
access the power
connection.
Locate the power
2
plug inside.
Connect the
conduit to the
control box.
3
Pull the power
supply cable
through the
conduit.
Step ActionIllustration
Refit the front
7
cover.
TM06 1102 1614
TM06 1103 1614
English (US)
TM06 1107 1614
Strip the cable as
illustrated.
Connect the cable
5
conductors to the
power supply plug.
L - L or L1
Ground - Ground
N - N or L2
Insert the power
plug into its mating
connector.
6
Tighten the
conduit.
TM06 1104 1614
TM06 1105 1614
TM06 1106 1614
13
English (US)
External switch
Fuse
(min. 10 A, time lag)
GFCI
Note
Note
NC NO CNC NO C
NL
S/S
M
I
M
A
signal
sensor
Vcc
24V
IN
Mains
connection
Alarm
Operation
Start/
stop
On/off timer
Analog input
Note
Note
5.4 Connection diagram
TM03 2397 0312
Fig. 14 Example of typical connection, 1 x 230 V ± 10 %, 50/60 Hz
All cables used must be connected in accordance with local regulations.
5.4.1 Connection to external controllers
Fig. 15 Example of connections in the control box
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).
14
TM05 2673 3812
Note
Note
Fig. 16 Wiring diagram, 32-XX versions
English (US)
TM05 8539 2413
The connection terminals of 32-XX versions differ from those of
terminal-connected versions, but they have the same function
and connection options.
Use screened cables for external on/off switch, digital input,
sensor and setpoint signals.
Connect screened cables to the ground connection as follows:
• Terminal-connected versions:
Connect the cable screen to ground via the digital-input
terminal (earth).
• Plug-connected versions:
Connect the cable screen to ground via cable clamp.
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.
All cables used must be heat-resistant up to
+85 °C.
All cables used must be installed in accordance
with EN 60204-1 and EN 50174-2:2000.
15
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
5.5 Input/output communication
• Relay outputs
Alarm, ready and operating indication via signal relay.
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.
5.5.1 Relay outputs
See fig. 15, 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 Grundfos GO
Remote.
The relays can be used for outputs up to 250 V and 2 A.
The functions of the signal relays appear from the table below:
Signal relayAlarm 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 relayReady 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 relayOperating signal
Not activated:
• The pump is not running.
Activated:
• The pump is running.
Fig. 17 Relay output
Contact symbolFunction
NCNormally closed
NONormally open
CCommon
TM05 3338 1212
16
5.5.2 Digital inputs
S/S
M
I
M
A
On/off timer
Start/stop
S/S
S/S
M
A
M
A
Q
H
M
I
M
I
Q
H
See fig. 15, 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 maintained.
This connection is the factory setting.
External forced max. or min. curve
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 Grundfos GO Remote.
English (US)
Fig. 18 Digital input
Contact symbolFunction
M
A
M
I
S/SStart/Stop
External start/stop
The pump can be started or stopped via the digital input.
Start/stop
H
Q
H
Q
Max. curve
100 % speed
Min. curve
25 % speed
Frame connection
Normal duty
Note: Factory setting with
jumper between S/S and .
Stop
TM05 3339 1212
17
English (US)
signal
sensor
Vcc
24V
I
N
-+
Sensor
Sensor
24V
IN
Vcc
Signal
1
2
24V
BMS
PLC
5.6 Analog input for external sensor
The analog input can be used for the connection of an external
sensor for measuring temperature or pressure.
The analog input can also be used for an external signal for the
control from a BMS system or similar control system.
The electrical signal for the input can be 0-10 VDC or 4-20 mA.
The selection of electrical signal (0-10 V or 4-20 mA) can be
changed on the control panel or with Grundfos GO Remote.
Fig. 19 Analog input for external sensor or control
In order to optimize the pump performance, external sensors can
advantageously be used in the following cases:
Function/control modeSensor type
Heat energy meterTemperature sensor
Constant temperatureTemperature sensor
Differential pressurePressure sensor
Fig. 20 Wiring, analog input
PINDescriptionLoad
INAnalog input
150 Ω (4-20 mA signal)
78 kΩ (0-10 V signal)
24 V 24 V supply to external sensorMax. 22 mA
TM05 3221 1112
Fig. 21 Examples of external sensors
Pos.Sensor type
Differential pressure transmitter,
1
Grundfos type DPI V.2
1/2" connection and 4-20 mA signal.
Relative pressure transmitter,
combined pressure and temperature sensor,
2
Grundfos type RPI/T G 1/2" connection and 4-20 mA
signal.
For further details, visit WebCAPS and reference Magna3 Data
booklet 98439208.
TM06 0882 1114
Fig. 22 Example of external signal for the control via BMS or
PLC
TM05 2947 1212
TM05 2888 0612
18
Ground for external sensor
5.7 Electrical connection for external sensor
1
3
4
2
5.8 Priority of settings
The external forced-control signals will influence the settings
available on the pump control panel or with Grundfos GO
Remote. However, the pump can always be set to max. curve
duty or to stop on the pump control panel or with 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 Grundfos GO Remote can only
set the pump to max. curve.
English (US)
Fig. 23 Example electrical connections for external sensor
PIN1234
Wire colorBrownGreyBlueBlack
Output
4 to 20 mA
Output
2 x 0 to 10 V
* Common ground for both pressure and temperature signal.
* Power supply (screened cable): SELV or PELV.
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
Possible settings
External
signals
Bus signal
19
English (US)
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
2
Note: When switched on, the pump will start in
AUTO
after approx. 5 seconds.
ADAPT
Pump display at first start-up.
After a few seconds, the pump display will change to the
start-up guide.
TM05 2884 0612
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
.
TM05 2887 0612
20
7. Settings
7.1 Overview of settings
All settings can be made on the pump control panel or with 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
Brightness
Return to factory settings
Run start-up guide
Date format, date and time
Time only
ADAPT
ADAPT
22
9. Control panel
Note
Note
Warnin g
At high liquid temperatures, the pump housing
may be very hot. In that case, only touch the
control panel.
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. "
4. Assist
This menu enables assisted pump setup, provides a short
description of the control modes and offers fault advice.
See section 14. "
Home
" menu.
Status
" menu.
No settings can be made in this menu.
Settings
Assist
" menu.
" menu.
11. "Home" menu
English (US)
Fig. 24 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.
TM05 7642 1313
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
shortcuts with or .
The "Home" display can be defined by the user.
See section 13.9.6
Define Home display
.
TM05 7929 1613
23
English (US)
12. "Status" menu
13. "Settings" menu
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 .
2.1.0.0.0.0 Status
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
• Automatic Night Setback
• Relay outputs
• Setpoint influence
• Bus communication
• General settings.
Navigate between submenus with or .
LIMIT
13.1 Setpoint
3.1.0.0.0.0 Settings
24
TM05 7925 1613
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 .
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%
13.2 Operating mode
H
Q
Max.
Min.
Note
Note
13.3 Control mode
English (US)
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. 25.
Fig. 25 Max. and min. curves
3.1.2.0.0.0 Operating mode
Navigation
Home > Settings > Control mode
Control mode
•AUTO
•FLOW
ADAPT
ADAPT
• Prop. press. (proportional pressure)
• Const. press. (constant pressure)
• Const. temp.(constant temperature)
• Constant curve.
The operating mode must be set to "
before a control mode can be enabled.
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.
, can be changed in the "Setpoint" submenu under
ADAPT
ADAPT
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
TM05 2446 5111
function can also be combined with the last five
LIMIT
Automatic Night
Normal
and
"
LIMIT
3.1.3.0.0.0 Control mode
.
• Normal: The pump runs according to the selected control
mode.
• Stop: The pump stops.
• 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.
25
English (US)
Note
Note
H
Q
H
auto_min
H
fac
A
1
A
3
A
2
H
set1
H
set2
H
Q
Q
max
90 %
H
auto_min
H
fac
Q
fac
Setting range
H
Q
H
set
H
set
2
13.3.1 AUTO
The AUTO
performance according to the actual system characteristic.
ADAPT
control mode continuously adapts the pump
ADAPT
Manual setting of the setpoint is not possible.
Fig. 26 AUTO
When the AUTO
will start with the factory setting, H
ADAPT
control mode has been enabled, the pump
ADAPT
fac
= H
, corresponding to
set1
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
ADAPT
lower control curve, H
pump will adjust its performance to A
. See fig. 26.
1
function will automatically select a correspondingly
. If the valves in the system close, the
set2
.
3
, the
2
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.
ADAPT
ADAPT
control.
control.
MAGNA3 xx-80: 14.7 ft (4.5 m)
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)
MAGNA3 xx-180: 31.1 ft (9.5 m).
H
The AUTO
control where the control curves have a fixed origin, H
The AUTO
for heating systems and is not recommended for air-conditioning
: A fixed value of 4.9 ft (1.5 m).
auto_min
control mode is a form of proportional-pressure
ADAPT
control mode has been developed specifically
ADAPT
auto_min
.
and cooling systems.
To r e s et A U TO
settings
.
, see section 13.9.8
ADAPT
Return to factory
13.3.2 FLOW
When FLOW
ensure that the flow never exceeds the entered FLOW
The setting range for the FLOW
the pump.
The factory setting of the FLOW
AUTO
TM05 2452 1312
Fig. 27 FLOW
ADAPT
is selected, the pump will run AUTO
ADAPT
is 25 to 90 % of the Q
LIMIT
is the flow where the
factory setting meets the max. curve. See fig. 27.
ADAPT
ADAPT
LIMIT
13.3.3 Proportional pressure
The pump head is reduced at decreasing water demand and
increased at rising water demand. See fig. 28.
Fig. 28 Proportional pressure
ADAPT
LIMIT
and
value.
of
max
TM05 3334 1212 TM05 2448 1212
26
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. 29.
Fig. 29 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. 30. 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 liquid temperature going out to the load.
An external temperature sensor must be installed in the system to
measure the liquid temperature returning from the heating load.
In this mode, the pump will maintain a constant temperature.
See figs 31 and 32, differential between the pump and the
external sensor.
TM05 2449 0312
Fig. 31 Differential temperature
Fig. 32 Differential temperature
Changing Kp and Ti values are only possible with
Grundfos GO.
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
K
and Ti values back to default values. For all
p
other modes the default values are K
T
= 0.5.
i
= 0.5,
p
English (US)
TM05 2451 5111TM05 8236 2113
TM05 2451 5111
Fig. 30 Constant temperature
27
English (US)
t
L
2
[m]
Δt
L
2
[m]
L2 [m]
t
Note
Note
H
Q
H [%]
Q [m
3
/h]
100 %
Max. curve
Limited
max. curve
Actual duty point
See table, fig. 33.
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. 34.
The desired speed can be set in % of maximum speed in the
T
i
range from 25 to 100 %.
0.5- 0.510 + 5L
-0.510 + 5L
0.5- 0.530 + 5L
2
2
2
Fig. 33 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 heat exchanger and sensor.
2
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
unstable.
4. Set the integral time (T
) to half the value of the value which made the
p
) until the motor becomes
i
) to twice the value which made the
i
motor unstable. This is the correct setting of the integral time.
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. 34 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. 35 Power and pressure limitations influencing the max.
curve
28
13.4 FLOW
H
Q
Q
max
Q
limit
90 %
Setting range
Note
Note
LIMIT
13.5 Automatic Night Setback
English (US)
LIMIT
Navigation
Home > Settings > FLOW
FLOW
LIMIT
• Enable FLOW
• Set FLOW
LIMIT
LIMIT
LIMIT
function
.
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.
Fig. 36 FLOW
The FLOW
control modes:
LIMIT
function can be combined with the following
LIMIT
• 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
LIMIT
value.
is 25 to 90 % of the Q
LIMIT
max
of the
pump.
The factory setting of the FLOW
AUTO
factory setting meets the max. curve. See fig. 27.
ADAPT
is the flow where the
LIMIT
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
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.
TM05 2445 1212
3.1.6.0.0.0 Automatic Night Setback
29
English (US)
Note
Note
rpm
V
Min.
02
Max.
10
13.6 Relay outputs
13.7 Setpoint influence
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.
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.
3.1.12.0.0.0 Relay outputs
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. 37.
Before the "
External setpoint function
" can be
enabled, the analog input must be set to "
setpoint influence
" via the "
Assist
" menu.
See section 5.6 Analog input for external sensor.
3.1.15.0.0.0 Setpoint influence
External
30
TM05 3219 1212
Fig. 37 External setpoint function, 0-10 V
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