Grundfos MAGNA3 Installation Manual

MAGNA3

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

MAGNA3

Table of contents

English (US)

Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Español (MX)

Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Français (CA)

Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

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

12 13 14 16 18 19 19

20 21

22 23 23 23 24 24

24 25 25 29 29 30 30 31 31

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 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

41 41 44

45 45

English (US)

Caution

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.

3. General information

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.

English (US)

Caution

Note

Min./Max. +14 °F - 230 °F (-10 °C - +110 °C)

175 psi (12 bar)

+32 to +104 °F (0 to +40 °C)

< 43 dB(A)

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

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

English (US)

1.2 x 8.0 TX200.6 x 3.5 5.0

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

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

pressurized during the installation of the pump.

TM05 2863 0612

Mount the pump with gaskets in

the pipework.

TM05 2864 0612

Fit bolts and nuts. Use the right

size of bolts according to system pressure.

TM05 2865 0612

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.

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

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

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

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

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

clamp as shown in step 4a, 4b, 4c or 4d.

TM05 2870 0612

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

Caution

Step Action Illustration

Note

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.

Twin-head pump. Position the clamps so that the gaps point towards the arrows.

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:

• MAGNA3 65-XX

• MAGNA3 80-XX

• MAGNA3 100-XX.

Fit and tighten the screw holding

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

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

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.

L - L or L1 Ground - Ground N - N or L2

Step Action Illustration

Remove the front

cover from the control box.

Locate the power supply plug and conduit adapter in

the box supplied with the pump.

Connect the

conduit adapter to the control box.

TM05 2880 0612

Insert the power supply plug into the male plug in

TM05 2875 0612

the pump control box.

TM05 2881 0612

TM05 2876 0612

Tighten the conduit adapter.

Refit the front cover.

TM05 2882 0612

Pull the power supply cable

through the conduit adapter.

Strip the cable

conductors as illustrated.

TM05 2877 0612

TM05 2878 0612

TM05 5534 3812

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

control box and access the power connection.

Locate the power

plug inside.

Connect the conduit to the control box.

Pull the power supply cable through the conduit.

Step Action Illustration

Refit the front

cover.

TM06 1102 1614

TM06 1103 1614

English (US)

TM06 1107 1614

Strip the cable as illustrated.

Connect the cable

conductors to the power supply plug. L - L or L1 Ground - Ground N - N or L2

Insert the power plug into its mating connector.

Tighten the conduit.

TM06 1104 1614

TM06 1105 1614

TM06 1106 1614

English (US)

External switch

Fuse

(min. 10 A, time lag)

GFCI

Note

NC NO C NC NO C

S/S

M A

signal

sensor

Vcc

24V

Mains

connection

Alarm

Operation

Start/ stop

On/off timer

Analog input

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).

TM05 2673 3812

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.

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

5.5.2 Digital inputs

S/S

On/off timer

Start/stop

S/S

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

Normal duty

Max. curve

Min. curve

Normal duty

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

S/S Start/Stop

External start/stop

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

Start/stop

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

English (US)

signal

sensor

Vcc

24V

Sensor

24V

Vcc

Signal

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 Ω (4-20 mA signal)

78 kΩ (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,

Grundfos type DPI V.2 1/2" connection and 4-20 mA signal.

Relative pressure transmitter, combined pressure and temperature sensor,

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

Ground for external sensor

5.7 Electrical connection for external sensor

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

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.

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.

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

desired control mode or let the pump run in AUTO For additional settings, see section 7.

Settings

ADAPT

TM05 2887 0612

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

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

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

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

9. Control panel

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.

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

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

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

Max.

Min.

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

• 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

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.

English (US)

Note

auto_min

fac

set1

set2

max

90 %

auto_min

fac

Setting range

set

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.

function will automatically select a correspondingly

. If the valves in the system close, the

set2

, the

A1: Original duty point.

: Lower registered head on the max. curve.

: New duty point after AUTO

: Original setpoint setting.

set1

: New setpoint after AUTO

set2

: MAGNA3 xx-60: 11.4 ft (3.5 m)

fac.

ADAPT

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).

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

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.

max

TM05 3334 1212 TM05 2448 1212

13.3.4 Constant pressure

Note

Δt

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

other modes the default values are K T

= 0.5.

= 0.5,

English (US)

TM05 2451 5111TM05 8236 2113

TM05 2451 5111

Fig. 30 Constant temperature

English (US)

[m]

Δt

[m]

L2 [m]

Note

H [%]

Q [m

/h]

100 %

Max. curve

Limited

max. curve

Actual duty point

See table, fig. 33. The table shows the suggested controller settings:

System/application

Heating

system

Cooling

system

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

range from 25 to 100 %.

0.5 - 0.5 10 + 5L

-0.5 10 + 5L

0.5 - 0.5 30 + 5L

Fig. 33 Suggested controller settings

Heating systems are systems in which an increase in pump performance will result in a rise in temperature at the sensor.

Cooling systems are systems in which an increase in pump performance will result in a drop in temperature at the sensor.

= Distance in [m] between heat exchanger and sensor.

Proceed as follows:

1. Increase the gain (K Instability can be seen by observing if the measured value

) until the motor becomes unstable.

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

) until the motor becomes

) to twice the value which made the

motor unstable. This is the correct setting of the integral time.

General rules of thumb:

• If the controller is too slow-reacting, increase K

• If the controller is hunting or unstable, dampen the system by

reducing K

or increasing Ti.

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

13.4 FLOW

max

limit

90 %

Setting range

Note

LIMIT

13.5 Automatic Night Setback

English (US)

LIMIT

Navigation

Home > Settings > FLOW

FLOW

LIMIT

• Enable FLOW

• Set FLOW

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

English (US)

Note

rpm

Min.

Max.

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

TM05 3219 1212

Fig. 37 External setpoint function, 0-10 V

+ 106 hidden pages

Grundfos MAGNA3 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

English (US)

1. Limited warranty

2. Symbols used in this document

3. General information

3.1 Applications

3.2 Pumped liquids

3.2.1 Glycol

3.3 Operating conditions

3.3.1 Liquid temperature

3.3.2 System pressure

3.3.3 Ambient temperature

3.3.4 Sound pressure level

3.3.5 Approvals

3.5 Insulating shells

3.6 Non-return valve

3.4 Frost protection

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

5.4.1 Connection to external controllers

5.5 Input/output communication

5.5.1 Relay outputs

5.5.2 Digital inputs

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

13.3.3 Proportional pressure

13.3.4 Constant pressure

13.3.5 Constant temperature

13.3.6 Differential temperature

13.3.7 Constant curve

13.5 Automatic Night Setback

13.6 Relay outputs

13.7 Setpoint influence

13.7.1 External setpoint function