Grundfos MAGNA3 25-100 (N) Installation And Operating Instructions Manual

GRUNDFOS INSTRUCTIONS

MAGNA3

Installation and operating instructions

2

3

Table of contents

MAGNA3

English (US)

Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Español (ES)

Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Français (FR)

Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

English (US)

4

English (US) Installation and operating instructions

Original installation and operating instructions.

CONTENTS

Page

1. Limited warranty

5

2. Symbols used in this document

5

3. General information

6

3.1 Applications

6

3.2 Pumped liquids

6

3.3 Operating conditions

7

3.4 Frost protection

7

3.5 Insulating shells

7

3.6 Non-return valve

7

3.7 Nameplate

8

3.8 Radio communication

9

3.9 Tools

9

4. Mechanical installation

9

4.1 Installing the pump

9

4.2 Positioning

10

4.3 Control box positions

10

4.4 Changing the control box position

11

5. Electrical installation

12

5.1 Supply voltage

12

5.2 Connection to the power supply

13

5.3 Connection diagram

14

5.4 Connection to external controllers

14

5.5 Input/output communication

15

5.6 Priority of settings

17

6. First start-up

18

7. Settings

19

7.1 Overview of settings

19

8. Menu overview

20

9. Control panel

21

10. Menu structure

21

11. "Home" menu

21

12. "Status" menu

22

13. "Settings" menu

22

13.1 Setpoint

22

13.2 Operating mode

23

13.3 Control mode

23

13.4 FLOW

LIMIT

27

13.5 Automatic Night Setback

27

13.6 Relay outputs

28

13.7 Setpoint influence

28

13.8 Bus communication

29

13.9 General settings

29

14. "Assist" menu

33

14.1 Assisted pump setup

33

14.2 Setting of date and time

33

14.3 Multi-pump setup

33

14.4 Setup, analog input

33

14.5 Description of control mode

33

14.6 Assisted fault advice

33

14.7 Wireless GENIair

33

14.8 Multi-pump function

33

15. Selection of control mode

34

16. Fault finding

36

16.1 Grundfos Eye operating indications

36

16.2 Signalling communication with remote control

36

16.3 Fault finding

37

17. Sensor

38

17.1 Sensor specifications

38

18. Accessories

39

18.1 Grundfos GO Remote

39

18.2 Communication

39

18.3 Fitting the CIM module

40

19. Technical data

41

20. Disposal

41

Warning

Prior to installation, read these installation and

operating instructions. Installation and operation

must comply with local regulations and accepted

codes of good practice.

Warning

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.

5

English (US)

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

Warning

If these safety instructions are not observed,

it may result in personal injury.

Warning

If these instructions are not observed, it may lead

to electric shock with consequent risk of serious

personal injury or death.

Warning

The surface of the product may be so hot that

it may cause burns or personal injury.

Warning

Risk of dropping objects which may cause

personal injury.

Warning

Escaping vapor involves the risk of personal

injury.

Caution

If these safety instructions are not observed,

it may result in malfunction or damage to the

equipment.

Note

Notes or instructions that make the job easier

and ensure safe operation.

English (US)

6

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.

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.

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.

Warning

Do not use the pump for flammable liquids, such

as diesel oil and gasoline.

Warning

Do not use the pump for aggressive liquids, such

as acids and sea water.

TM05 2857 0612

Max. 95 % RH

Enclosure Type 2

Note

Additives with a density and/or kinematic

viscosity higher than those/that of water will

reduce the hydraulic performance.

7

English (US)

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.

3.4 Frost protection

3.5 Insulating shells

Insulating shells are available for single-head pumps only.

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.

• 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

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).

Fig. 4 Non-return valve

TM05 7662 1413

Caution

If the pump is not used during periods of frost,

necessary steps must be taken to prevent frost

bursts.

Note

Additives with a density and/or kinematic

viscosity higher than those/that of water will

reduce the hydraulic performance.

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

Limit the heat loss from the pump housing and

pipework.

TM05 2859 0612

Caution

Do not insulate the control box or cover the

control panel.

TM05 3055 0912

English (US)

8

3.7 Nameplate

The pump nameplate provides the following information:

Fig. 5 Example of nameplate

TM05 6381 4612

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

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

9

English (US)

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

Fig. 6 Recommended 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).

TM05 6472 4712

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

1.2 x 8.0 TX200.6 x 3.5 5.0

1

2

3

4

5

6

7

Warning

Observe local regulations setting limits for

manual lifting or handling.

Step Action Illustration

1

Arrows on the pump housing

indicate the liquid flow direction

through the pump. The liquid

flow direction can be horizontal

or vertical, depending on the

control box position.

TM05 2862 0612

2

Close the isolating valves and

make sure that the system is not

pressurized during the

installation of the pump.

TM05 2863 0612

3

Mount the pump with gaskets in

the pipework.

TM05 2864 0612

4

Fit bolts and nuts. Use the right

size of bolts according to system

pressure.

TM05 2865 0612

English (US)

10

4.2 Positioning

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.

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 clamp is tightened.

See fig. 9.

Fig. 9 Fitting the pump head to the pump housing

TM05 2866 0712

A

B

CD

TM05 2915 0612TM05 5837 4112

11

English (US)

4.4 Changing the control box position

Warning

The warning symbol on the clamp holding the

pump head and pump housing together indicates

that there is a risk of personal injury. See specific

warnings below.

Warning

When loosening the clamp, do not drop the pump

head.

Warning

Risk of escaping vapor.

Step Action Illustration

1

Loosen the screw in the clamp

holding the pump head and

pump housing together.

Warning: If the screw is

loosened too much, the pump

head will be completely

disconnected from the pump

housing.

TM05 2867 0612

2

Carefully rotate the pump head

to the desired position.

If the pump head is stuck,

loosen it with a light blow of a

rubber mallet.

TM05 2868 0612

3

Position the control box in

horizontal position so that the

Grundfos logo is in vertical

position. The motor shaft must

be horizontal.

TM05 2869 0612

4

Due to the drain hole in the

stator housing, position the gap

of the clamp as shown in step

4a, 4b, 4c or 4d.

TM05 2870 0612

4a

Single-head pump.

Position the clamp so that the

gap points towards the arrow.

It can be in position 3 or

9 o’clock.

TM05 2918 0612 - TM05 2871 0612

4b

Single-head pump.

Note: The gap of the clamp can

also be in position 6 o’clock for

the following pump sizes:

• MAGNA3 65-XX

• MAGNA3 80-XX

• MAGNA3 100-XX.

TM05 2899 1912

4c

Twin-head pump.

Position the clamps so that the

gaps point towards the arrows.

They can be in position 3 or

9o’clock.

TM05 2917 0612 - TM05 2873 0612

4d

Twin-head pump.

Note: The gap of the clamp can

also be in position 6 o’clock for

the following pump sizes:

• MAGNA3 65-XX

• MAGNA3 80-XX

• MAGNA3 100-XX.

TM05 2897 1912

6

Fit and tighten the screw

holding the clamp to minimum

6 ± 0.7 ft-lbs (8 ± 1 Nm).

TM05 2872 0612

7

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

pump housing and insulation

shell. Alternatively, the pump

may be insulated manually in

accordance with standard

insulation practices for cooling

applications.

TM05 2874 0412

Caution

If insulating the pump manually, do not insulate

the control box or cover the control panel.

Step Action Illustration

English (US)

12

5. Electrical installation

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.

• 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.

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.

Warning

Never make any connections in the pump control

box unless the power supply has been switched

off for at least 5 minutes.

Warning

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

Interrupter (GFCI) is used as additional

protection, this circuit interrupter must trip out

when ground fault currents with DC content

(pulsating DC) occur.

Note

The number of starts and stops via the power

supply must not exceed four times per hour.

13

English (US)

5.2 Connection to the power supply

Fig. 10 Insulation of pump housing and pipework

Step Action Illustration

1

Remove the front

cover from the

control box.

TM05 2875 0612

2

Locate the power

supply plug and

conduit adapter in

the box supplied

with the pump.

TM05 2876 0612

3

Connect the

conduit adapter to

the control box.

TM05 2877 0612

4

Pull the power

supply cable

through the

conduit adapter.

TM05 2878 0612

5

Strip the cable

conductors as

illustrated.

TM05 5534 3812

6

Connect the cable

conductors to the

power supply plug.

L - L or L1

Ground - Ground

N - N or L2

TM05 2880 0612

7

Insert the power

supply plug into

the male plug in

the pump control

box.

TM05 2881 0612

8

Tighten the

conduit adapter.

Refit the front

cover.

TM05 2882 0612

TM05 5549 3812

Step Action Illustration

English (US)

14

5.3 Connection diagram

Fig. 11 Example of typical connection, 1 x 230 V ± 10 %, 50/60 Hz

5.4 Connection to external controllers

Fig. 12 Connection diagram

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.

TM03 2397 0312

External switch

Fuse

(min. 10 A, time lag)

GFCI

Note

All cables used must be connected in

accordance with local regulations.

TM05 2901 1912 - TM05 3343 1212

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 N0 C

S/S

M

I

M

A

IN

24V

Vcc

Signal

Vcc

Signal

3

2

1

Warning

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.

Note

All cables used must be heat-resistant up to

+185 °F (+85 °C).

15

English (US)

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. 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

The functions of the signal relays appear from the table below:

TM05 3338 1212

Contact symbol Function

NC Normally closed

NO Normally open

C Common

NC NO C NC NO C

Alarm

Operation

Relay 1 Relay 2

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.

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

English (US)

16

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 maintained.

This connection is the factory setting.

Fig. 14 Digital input

External start/stop

The pump can be started or stopped via the digital input.

External forced max. or min. curve

The pump can be forced to operate on the max. or min. curve via

the digital input.

Select the function of the digital input on the pump control panel

or with the Grundfos GO Remote.

5.5.3 Analog input

See fig. 12, pos. 3.

The analog input can be used for the connection of an external

sensor for measuring temperature, pressure, flow or other

parameter. See fig. 17.

It is possible to use sensor types with 0-10 V or 4-20 mA signal.

The analog input can also be used for an external signal for the

control from a BMS system or similar control system. See fig. 18.

• When the input is used for the heat energy meter, a

temperature sensor must be installed in the return pipe.

• If the pump is installed in the return pipe of the system, the

sensor must be installed in the flow pipe.

• If the constant-temperature control mode has been enabled

and the pump is installed in the flow pipe of the system, the

sensor must be installed in the return pipe.

• If the pump is installed in the return pipe of the system, the

built-in temperature sensor can be used.

TM05 3339 1212

Contact symbol Function

M

A

Max. curve

100 % speed

M

I

Min. curve

25 % speed

S/S Start/Stop

Frame connection

Start/stop

Normal duty

Note: Factory setting with

jumper between S/S and .

Stop

S/S

M

I

M

A

On/off timer

Start/stop

S/S

Q

H

S/S

Q

H

Max. curve

Normal duty

Max. curve

Min. curve

Normal duty

Min. curve

M

A

Q

H

M

A

Q

H

M

I

Q

H

M

I

Q

H

17

English (US)

The selection of sensor type (0-10 V or 4-20 mA) can be changed

on the pump control panel or with the Grundfos GO Remote.

Fig. 15 Analog input for external sensor, 0-10 V

Fig. 16 Analog input for external sensor, 4-20 mA

Fig. 17 Examples of external sensors

Fig. 18 Examples of external signal for the control via

BMS/PLC

5.6 Priority of settings

The external forced-control signals will influence the settings

available on the pump control panel or with the Grundfos GO

Remote. However, the pump can always be set to max. curve

duty or to stop on the pump control panel or with the Grundfos

GO Remote.

If two or more functions are enabled at the same time, the pump

will operate according to the setting with the highest priority.

The priority of the settings is as shown in the table below.

Example: If the pump has been forced to stop via an external

signal, the pump control panel or the Grundfos GO Remote can

only set the pump to max. curve.

As illustrated in the table, the pump does not react to external

signals (max. curve and min. curve) when it is controlled via bus.

For further details, please contact Grundfos.

TM05 3221 0612TM05 2948 0612TM05 2947 1212TM05 2888 0612

signal

sensor

Vcc

24V

I

N

signal

sensor

Vcc

24V

I

N

signal

sensor

Vcc

I

24V

I

N

24V

IN

Vcc

Signal

24V

BMS

PLC

Priority

Possible settings

Pump control

panel or

Grundfos GO

Remote

External

signals

Bus signal

1 Stop

2 Max. curve

3Stop

4Stop

5Max. curve

6Min. curve

7Start

8Max. curve

9Min. curve

10 Min. curve

11 Start

English (US)

18

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

1

Switch on the power supply to the pump.

Note: When switched on, the pump will start in

AUTO

ADAPT

after approx. 5 seconds.

TM05 2884 0612

2

Pump display at first start-up.

After a few seconds, the pump display will change to the

start-up guide.

TM05 2885 0612

3

The start-up guide will guide you through the general

settings of the pump, such as language, date and time.

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

4

When the general settings have been made, select the

desired control mode or let the pump run in AUTO

ADAPT

.

For additional settings, see section 7.

Settings

.

TM05 2887 0612

19

English (US)

7. Settings

7.1 Overview of settings

All settings can be made on the pump control panel or with the Grundfos GO Remote.

Menu Submenu Further information

Setpoint See section 13.1

Setpoint

.

Operating mode See section 13.2

Operating mode

.

• Normal

• Stop

• Min.

• Max.

Control mode See section 13.3

Control mode

.

•AUTO

ADAPT

See section 13.3.1 AUTO

ADAPT

.

•FLOW

ADAPT

See section 13.3.2 FLOW

ADAPT

.

• 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

See section 13.4 FLOW

LIMIT

.

• Set FLOW

LIMIT

Automatic Night Setback See section 13.5

Automatic Night Setback

.

• Not active

• Active

Relay outputs See section 13.6

Relay outputs

.

• Relay output 1

• Relay output 2

Setpoint influence See section 13.7

Setpoint influence

.

• External setpoint function See section 13.7.1

External setpoint function

.

• Temperature influence See section 13.7.2

Temperature influence

.

Bus communication See section 13.8

Bus communication

.

• Pump number See section 13.8.1

Pump number

.

General settings See section 13.9

General settings

.

• Language See section 13.9.1

Language

.

• Set date and time See section 13.9.2

Set date and time

.

• Units See section 13.9.3

Units

.

• Enable/disable settings See section 13.9.4

Enable/disable settings

.

• Delete history See section 13.9.5

Delete history

.

• Define Home display See section 13.9.6

Define Home display

.

• Display brightness See section 13.9.7

Display brightness

.

• Return to factory settings See section 13.9.8

Return to factory settings

.

• Run start-up guide See section 13.9.9

Run start-up guide

.

English (US)

20

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

LIMIT

Date format, date and time

Max. curve and duty point Enable FLOW

LIMIT

function Date only

Resulting setpoint Set FLOW

LIMIT

Time only

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

ADAPT

Power consumption Not active FLOW

ADAPT

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

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Grundfos MAGNA3 25-100 (N) Installation And Operating Instructions Manual

Grundfos MAGNA3 25-100 (N) Installation And Operating Instructions Manual

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