Grundfos MAGNA3 User Manual
MAGNA3
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
English (US)
English (US) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1. Limited warranty
2. Symbols used in this document
3. General information
3.1 Applications
3.2 Pumped liquids
3.3 Operating conditions
3.4 Frost protection
3.5 Insulating shells
3.6 Non-return valve
3.7 Nameplate
3.8 Radio communication
3.9 Tools
4. Mechanical installation
4.1 Installing the pump
4.2 Positioning
4.3 Control box positions
4.4 Changing the control box position
5. Electrical installation
5.1 Supply voltage
5.2 Connection to the power supply
5.3 Connection diagram
5.4 Connection to external controllers
5.5 Input/output communication
5.6 Priority of settings
6. First start-up
7. Settings
7.1 Overview 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
15. Selection of control mode
16. Fault finding
16.1 Grundfos Eye operating indications
16.2 Signalling communication with remote control
16.3 Fault finding
17. Sensor
17.1 Sensor specifications
LIMIT
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18. Accessories
18.1 Grundfos GO Remote
18.2 Communication
18.3 Fitting the CIM module
19. Technical data
2
20. Disposal
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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
1 Product name
2 Model
3 Production code (year and week)
4 Serial number
5 Product number
6 Enclosure type
7 Energy Efficiency Index (EEI)
8 Part (according to EEI)
9TF-class
10 Minimum current [A]
11 Maximum current [A]
12 Minimum power [W]
13 Maximum power [W]
14 Maximum pressure
15 Voltage [V] and frequency [Hz]
16 QR (Quick Response) code
17 Approvals (nameplate)
18 Assembled in USA
English (US)
TM05 6381 4612
5
English (US)
1.2 x 8.0 TX200.6 x 3.5 5.0
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. Tool Size
1 Screwdriver, straight slot 1.2 x 8.0 mm
2 Screwdriver, straight slot 0.6 x 3.5 mm
3 Screwdriver, torx bit TX20
4 Hexagon key 5.0 mm
5 Open end wrench Depending on PN size
6 Wire cutter
7Pipe wrench
Step Action Illustration
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 Action Illustration
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 Action Illustration
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.
• Digital input
– Start/Stop (S/S)
– Min. curve (MI)
– Max. curve (MA).
• 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 C NC NO C
Alarm
Operation
Relay 1 Relay 2
132
NC NO C
132
NC NO C
12 3
NC NO C
132
NC NO C
132
NC NO C
12 3
NC NO C
132
NC NO C
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 symbol Function
NC Normally closed
NO Normally open
C Common
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 symbol Function
M
A
M
I
Max. curve
100 % speed
Min. curve
25 % speed
S/S Start/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
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