Grundfos MAGNA3 Installation Manual

MAGNA3
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
MAGNA3
Table of contents
English (US)
Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Français (CA)
Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
2
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 Pump head position
4.5 Changing the control box position
5. Electrical installation
5.1 Supply voltage
5.2 Connection to the power supply (models 40-XX, 50-XX, 65-XX, 80-XX, 100-XX)
5.3 Connection to the power supply (models 32-XX)
5.4 Connection diagram
5.5 Input/output communication
5.6 Analog input for external sensor
5.7 Electrical connection for external sensor
5.8 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
LIMIT
Page
10
11
12
12 13 14 16 18 19 19
20 21
21
22 23 23 23 24 24
24 25 25 29 29 30 30 31 31
35
35 35 35 35 35 35 35 35
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 38
38 38 39
40
40
41
41 41 44
45 45

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
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)
9 TF-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
7
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 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. 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
6 Wire cutter
Depending on flange bolt size
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
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 Action Illustration
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 Action Illustration
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 Action Illustration
Connect the cable conductors to the power supply plug.
6
L - L or L1 Ground - Ground N - N or L2
Step Action Illustration
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 Action Illustration
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 Action Illustration
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 C NC 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 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

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.
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 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.
Activated:
• The pump is running.
Fig. 17 Relay output
Contact symbol Function
NC Normally closed NO Normally open
C Common
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 symbol Function
M A
M
I
S/S Start/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 mode Sensor type
Heat energy meter Temperature sensor Constant temperature Temperature sensor Differential pressure Pressure sensor
Fig. 20 Wiring, analog input
PIN Description Load
IN Analog input
150 (4-20 mA signal)
78 k (0-10 V signal)
24 V 24 V supply to external sensor Max. 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
PIN 1 2 3 4
Wire color Brown Grey Blue Black
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.
+ not used - not used
Pressure
+
signal
-*
Temperature
signal
TM04 7156 1610
Priority
1 Stop 2 Max. curve 3Stop 4Stop 5Max. curve 6Min. curve 7Start 8Max. curve
9Min. curve 10 Min. curve 11 Star t
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.
Step Action Illustration
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.
Menu Submenu Further information
English (US)
Setpoint See section 13.1 Operating mode See section 13.2
Normal
Stop
Min.
Max.
Control mode See section 13.3
•AUTO
•FLOW
Prop. press. See section 13.3.3 Proportional pressure.
Const. press. See section 13.3.4 Constant pressure.
Const. temp. See section 13.3.5 Constant temperature.
• Differential temperature See section 13.3.6 Differential temperature.
Constant curve See section 13.3.7 Constant curve.
FLOW
LIMIT
Set FLOW
Automatic Night Setback See section 13.5
Not active
Active
Relay outputs See section 13.6
Relay output 1
Relay output 2
Setpoint influence See section 13.7
External setpoint function See section 13.7.1
Temperature influence See section 13.7.2
Bus communication See section 13.8
Pump number See section 13.8.1
General settings See section 13.9
Language See section 13.9.1
Set date and time See section 13.9.2
Units See section 13.9.3
Enable/disable settings See section 13.9.4
Delete history See section 13.9.5
Define Home display See section 13.9.6
Display brightness See section 13.9.7
Return to factory settings See section 13.9.8
Run start-up guide See section 13.9.9
ADAPT ADAPT
LIMIT
See section 13.3.1 AUTO See section 13.3.2 FLOW
See section 13.4 FLOW
Setpoint
Operating mode
Control mode
.
ADAPT
ADAPT
LIMIT
.
.
.
.
.
Automatic Night Setback
Relay outputs
Setpoint influence
.
.
External setpoint function
Temperature influence
Bus communication
Pump number
General settings
Language
Set date and time
Units
.
.
.
.
.
.
Enable/disable settings
Delete history
.
Define Home display
Display brightness
.
Return to factory settings
Run start-up guide
.
.
.
.
.
.
.
21
English (US)

8. Menu overview

Status Settings Assist
Operating status Setpoint Assisted pump setup
Operating mode, from Operating mode Setting of pump
Control mode Control mode Setting of date and time
Pump performance FLOW
Max. curve and duty point Enable FLOW
Resulting setpoint Set FLOW
LIMIT
LIMIT
function Date only
LIMIT
Liquid temperature Automatic Night Setback Multi-pump setup
Speed Relay outputs Setup, analog input
Operating hours Relay output 1 Description of control mode
Power and energy consumption Relay output 2 AUTO
Power consumption Not active FLOW
Energy consumption Ready Prop. press.
Warning and alarm Alarm Const. press.
Actual warning or alarm Operation Const. temp. Warning log Setpoint influence Differential temperature
Warning log 1 to 5 External setpoint function Constant curve
Alarm log Temperature influence Assisted fault advice
Alarm log 1 to 5 Bus communication Blocked pump
Heat energy meter Pump number Pump communication fault
Heat power General settings Internal fault
Heat energy Language Internal sensor fault
Flow rate Set date and time Dry running
Volume Select date format Forced pumping
Hours counter Set date Undervoltage
Temperature 1 Select time format Overvoltage
Temperature 2 Set time External sensor fault
Differential temp. Units
Work log SI or US units
Operating hours Customized units
Trend data Pressure
Duty point over time Differential 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 modules Temperature
Date and time Differential temp.
Date Power
Time Energy
Pump identification Enable/disable settings
Multi-pump system Delete history
Operating status Delete work log
Operating mode, from Delete heat energy data
Control mode Delete energy consumption
System performance Define Home display
Duty point Select Home display type
Resulting setpoint List of data
System identification Graphical illustration
Power and energy consumption Define Home display contents
Power consumption List of data
Energy consumption Graphical 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
Button Function
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 mode Measuring unit
Proportional pressure m, ft Constant pressure m, 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 - 0.5 10 + 5L
-0.5 10 + 5L
0.5 - 0.5 30 + 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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