Grundfos TPE 2 Series User manual

TPE2 (D), TPE3 (D)
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
Other languages
http://net.grundfos.com/qr/i/98450210

English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
CONTENTS
Page
1. Symbols used in this document 3
2. Abbreviations and definitions 4
3. General information 4
4. General description 4
4.1 Radio communication 4
4.2 Battery 4
5. Receiving the product 5
5.1 Delivery 5
5.2 Transporting the product 5
5.3 Inspecting the product 5
5.4 Handling the product 5
6. Applications 5
6.1 Pumped liquids 6
7. Mechanical installation 6
7.1 Pipes 7
7.2 Terminal box positions 8
7.3 Fitting of pump head 8
7.4 Base plate 9
7.5 Insulation 10
7.6 Frost protection 10
7.7 Cable entries 10
7.8 Ensuring motor cooling 10
7.9 Outdoor installation 10
8. Electrical installation 11
8.1 Protection against electric shock,
indirect contact 11
8.2 Cable requirements 11
8.3 Mains supply 12
8.4 Additional protection 13
8.5 Connection terminals 13
8.6 Signal cables 16
8.7 Bus connection cable 16
9. Startup 17
9.1 Flushing the pipe system 17
9.2 Priming the pump 17
9.3 Starting the pump 17
9.4 Shaft seal run-in 17
10. Operating conditions 18
10.1 Maximum number of starts and stops 18
10.2 Alternating operation of twin-head
pumps 18
10.3 Liquid temperature 18
10.4 Ambient temperature 18
10.5 Operating pressure or test pressure 18
10.6 Inlet pressure 18
10.7 Electrical data 18
10.8 Sound pressure level 18
10.9 Environment 18
10.10 Installation altitude 19
10.11 Humidity 19
10.12 Motor cooling 19
11. User interfaces 20
12. Standard control panel 20
12.1 Setpoint setting 21
13. Advanced control panel 23
14. Home display 24
14.1 Start-up guide 24
14.2 Menu overview for advanced control
panel 25
15. Grundfos GO 28
15.1 Communication 28
15.2 Menu overview for Grundfos GO main
menus 29
16. Description of functions 32
16.1 "Heat energy monitor" 32
16.2 Setpoint 32
16.3 Operating mode 32
16.4 Set manual speed 33
16.5 "Set user-defined speed" 33
16.6 Control mode 33
16.7 "Proportional-pressure setup" 40
16.8 FLOWLIMIT 40
16.9 Automatic Night Setback 41
16.10 Analog inputs 41
16.11 Built-in Grundfos sensor 43
16.12 Pt100/1000 inputs 43
16.13 Digital inputs 44
16.14 Digital inputs/outputs 45
16.15 "Signal relays 1 and 2" (Relay outputs) 47
16.16 Analog output 47
16.17 "Controller" ("Controller settings") 48
16.18 Operating range 50
16.19 External setpoint function 50
16.20 "Predefined setpoints" 52
16.21 "Temperature influence" 53
16.22 Limit-exceeded function 53
16.23 "Pulse flowmeter setup" 54
16.24 "Ramps" 55
16.25 "Standstill heating" 55
16.26 Motor bearing monitoring 55
16.27 "Service" 56
16.28 "Number" (Pump number) 56
16.29 "Radio communication" (Enable/disable
radio comm.) 56
16.30 Language 56
16.31 "Date and time" (Set date and time) 57
16.32 "Unit configuration" (Units) 57
16.33 "Buttons on product" (Enable/disable
settings) 57
16.34 Delete history 57
16.35 Define Home display 58
16.36 Display settings 58
16.37 "Store settings" (Store actual settings) 58
16.38 "Recall settings" (Recall stored settings) 58
16.39 "Undo" 58

English (GB)
3
1. Symbols used in this document
The text accompanying the three hazard symbols
DANGER, WARNING and CAUTION is structured in
the following way:
16.40 "Pump name" 58
16.41 "Connection code" 59
16.42 Run start-up guide 59
16.43 Alarm log 59
16.44 Warning log 60
16.45 Assist 60
16.46 Assisted pump setup 60
16.47 Setup, analog input 60
16.48 Setting of date and time 61
16.49 "Multipump setup" (Setup of multi-pump
system) 61
16.50 Description of control mode 64
16.51 Assisted fault advice 64
17. Selecting control mode 65
18. Bus signal 67
19. Priority of settings 68
20. Grundfos Eye 69
21. Signal relays 70
22. Installing a communication interface
module 71
23. Identification of functional module 73
24. Identification of control panel 73
25. Changing the position of the control
panel 74
26. Servicing the product 75
26.1 Maintenance 75
26.2 Service 75
27. Cleaning the product 76
28. Fault finding 76
29. Megging 78
30. Technical data, single-phase motors 78
30.1 Supply voltage 78
30.2 Leakage current 78
31. Technical data, three-phase motors 78
31.1 Supply voltage 78
31.2 Leakage current, AC 78
32. Inputs and outputs 79
33. Other technical data 80
33.1 Torques 81
33.2 Sound pressure level 81
34. Factory settings 82
35. Disposing of the product 83
Read this document before installing the
product. Installation and operation must
comply with local regulations and accepted
codes of good practice.
DANGER
Indicates a hazardous situation which, if
not avoided, will result in death or serious
personal injury.
WARNING
Indicates a hazardous situation which, if
not avoided, could result in death or
serious personal injury.
CAUTION
Indicates a hazardous situation which, if
not avoided, could result in minor or
moderate personal injury.
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.
Tips and advice that make the work easier.
If these instructions are not observed, it
may result in malfunction or damage to the
equipment.
A blue or grey circle with a white graphical
symbol indicates that an action must be
taken.
A red or grey circle with a diagonal bar,
possibly with a black graphical symbol,
indicates that an action must not be taken
or must be stopped.

English (GB)
4
2. Abbreviations and definitions 3. General information
These installation and operating instructions apply to
the Grundfos TPE2, TPE2 D and TPE3, TPE3 D
pumps.
The pumps are fitted with frequency-controlled
permanent-magnet motors for single-phase or
three-phase mains connection.
4. General description
The pumps are fitted with frequency-controlled
permanent-magnet motors for single-phase or
three-phase mains connection.
4.1 Radio communication
This product incorporates a radio module for remote
control which is a class 1 device and can be used
anywhere in the EU member states without
restrictions.
For use in USA and Canada, see page 84.
Some variants of the product and products sold in
China and Korea have no radio module.
This product can communicate with Grundfos GO
and other products of the same type via the built-in
radio module.
In some cases, an external antenna may be
required. Only Grundfos-approved external antennas
may be connected to this product, and only by a
Grundfos-approved installer.
4.2 Battery
Pumps with the advanced functional module, FM
300, incorporate a Li-ion battery. The Li-ion battery
complies with the Battery Directive (2006/66/EC).
The battery does not contain mercury, lead and
cadmium.
AI Analog input
AL Alarm, out of range at lower limit
AO Analog output
AU Alarm, out of range at upper limit
CIM Communication interface module
Current
sinking
The ability to draw current into the
terminal and guide it towards earth in
the internal circuitry.
Current
sourcing
The ability to push current out of the
terminal and into an external load
which must return it to earth.
DI Digital input
DO Digital output
ELCB Earth-leakage circuit breaker
FM Functional module
GDS
Grundfos Digital Sensor
Factory-fitted sensor in some
Grundfos pumps
GENIbus Proprietary Grundfos fieldbus
standard
GFCI Ground fault circuit interrupter
USA and Canada
GND Earth
Grundfos
Eye Status indicator light
LIVE Low voltage with the risk of electric
shock if the terminals are touched
OC Open collector:
Configurable open-collector output
PE Protective earth
PELV
Protective extra-low voltage
A voltage that cannot exceed ELV
under normal conditions and under
single-fault conditions, except earth
faults in other circuits.
RCD Residual-current device
SELV
Safety extra-low voltage
A voltage that cannot exceed ELV
under normal conditions and under
single-fault conditions, including earth
faults in other circuits.
TPE2
Single-head pump without
factory-fitted differential-pressure and
temperature sensor
TPE2 D
Twin-head pump without factory-fitted
differential-pressure and temperature
sensor
TPE3
Single-head pump with factory-fitted
differential-pressure and temperature
sensor
TPE3 D
Twin-head pump with factory-fitted
differential-pressure and temperature
sensor

English (GB)
5
5. Receiving the product
5.1 Delivery
The pump is delivered from the factory in a carton
with a wooden bottom, specially designed for
transport by fork-lift truck or a similar vehicle.
5.2 Transporting the product
5.3 Inspecting the product
Before you install the product, do the following:
• Check that the product is as ordered.
• Check that no visible parts have been damaged.
If parts are damaged or missing, contact your local
Grundfos sales company.
5.4 Handling the product
Observe local regulations setting limits for manual
lifting or handling. The motor weight is stated on the
nameplate.
Lift the pump by means of nylon straps. See figures
1and 2.
Fig. 1 TPE2, TPE3
Fig. 2 TPE2 D, TPE3 D
6. Applications
The pumps are designed to circulate hot or cold
water in residential, institutional and industrial
applications:
• heating systems
• district heating plants
• central heating systems for blocks of flats
• air-conditioning systems
• cooling systems.
In addition, the pumps are used for liquid transfer
and water supply in for instance:
• washing systems
• domestic hot-water systems
• industrial systems in general.
To ensure optimum operation, the dimensioning
range of the system must fall within the performance
range of the pump.
WARNING
Falling objects
Death or serious personal injury
- Secure the product during
transportation to prevent it from tilting or
falling down.
CAUTION
Crushing of feet
Minor or moderate personal injury
- Wear safety shoes when moving the
product.
CAUTION
Back injury
Minor or moderate personal injury
- Use lifting equipment.
CAUTION
Crushing of feet
Minor or moderate personal injury
- Wear safety shoes and attach lifting
equipment to the motor eyebolts when
handling the product.
Do not lift the product by the terminal box.
TM05 7914 1613TM05 7915 1613

English (GB)
6
6.1 Pumped liquids
The pump is suitable for thin, clean, non-aggressive
and non-flammable liquids, not containing solid
particles or fibres that may attack the pump
mechanically or chemically.
Examples:
• Central heating system water. The water must
meet the requirements of accepted standards on
water quality in heating systems.
• Cooling liquids.
• Domestic hot water.
• Industrial liquids.
• Softened water.
The pumping of liquids with a density and/or
kinematic viscosity higher than that of water will have
the following effects:
• a considerable pressure drop
• a drop in hydraulic performance
• a rise in power consumption.
In such cases, fit the pump with a bigger motor. If in
doubt, contact Grundfos.
The EPDM O-rings fitted as standard are primarily
suitable for water.
If the water contains mineral or synthetic oils or
chemicals or if other liquids than water are pumped,
chose the O-rings accordingly.
7. Mechanical installation
Install the pump in a dry well-ventilated, but
frost-free position.
When installing pumps with oval bolt holes in the
pump flange, PN 6/10, use washers as shown in fig.
3.
Fig. 3 Use of washers for oval bolt holes
Arrows on the pump housing show the direction of
flow of liquid through the pump.
You can install the pump in horizontal or vertical
pipes.
For inspection and removal of motor or pump head, a
clearance of 300 mm is required above the motor.
See fig. 4.
Fig. 4 Required clearance above the motor
WARNING
Contact with hazardous liquids
Death or serious personal injury
- If the pump is used for a liquid which is
injurious to health, it will be classified as
contaminated. In such cases, take
proper precautions to avoid injury to
health when operating or working on the
pump.
- Wear personal protection equipment.
WARNING
Hot or cold surface
Death or serious personal injury
- Make sure that no one can accidentally
come into contact with hot or cold
surfaces.
In order to maintain the UL mark,
additional requirements apply to the
equipment. See page 84.
TM01 0683 1997
The motor must never fall below the
horizontal plane.
TM05 7916 1613
Installation
Washer Pump
300 mm

English (GB)
7
Twin-head pumps installed in horizontal pipes must
be fitted with an automatic air vent in the upper part
of the pump housing. See fig. 5.
The automatic air vent is not supplied with the pump.
Fig. 5 Automatic air vent
If the liquid temperature falls below the ambient
temperature, condensation may form in the motor
during standstill. In this case, make sure that one of
the drain holes in the motor flange is open and points
downwards. See fig. 6.
Fig. 6 Drain hole in motor flange
If twin-head pumps are used for pumping liquids with
a temperature below 0 °C (32 °F), condensed water
may freeze and cause the coupling to get stuck. You
can solve the problem by installing heating elements.
Whenever possible, install the pump with the motor
shaft in horizontal position. See fig. 5.
7.1 Pipes
Fit isolating valves on either side of the pump to
avoid draining the system if the pump needs to be
cleaned or repaired.
The pump is suitable for pipeline mounting, provided
that the pipes are adequately supported on either
side of the pump.
Single-head pumps are designed for pipeline
mounting only.
Twin-head pumps are prepared for installation on a
mounting bracket or base plate.
When installing the pipes, make sure that the pump
housing is not stressed by the pipes.
The inlet and outlet pipes must be of an adequate
size, taking the pump inlet pressure into account.
To avoid sediment build-up, do not fit the pump at the
lowest point of the system.
Install the pipes so that air locks are avoided,
especially on the inlet side of the pump. See fig. 7.
Fig. 7 Correct pipes on the inlet side of the
pump
If there is any risk of the pump running against a
closed outlet valve, ensure a minimum liquid flow
through the pump by connecting a bypass or a drain
to the outlet pipe. The drain can for instance be
connected to a tank. A minimum flow rate of 10 % of
the flow rate at maximum efficiency is needed at all
times.
Flow rate and head at maximum efficiency are stated
on the pump nameplate.
TM05 7983 1713TM05 7917 1613
Observe the conditions in section
10. Operating conditions.
TM00 2263 0195
The pump must not run against a closed
outlet valve as this will cause an increase
in temperature or formation of steam in the
pump, which may cause damage to the
pump.

English (GB)
8
7.2 Terminal box positions
You can turn the terminal box to any position.
Change the terminal box position as follows:
1. Loosen the clamp securing the pump head to the
pump housing. See fig. 8.
Fig. 8 Clamp (A)
2. Turn the pump head to the required position.
3. Check the following before you tighten the clamp:
– The contact face of the pump housing and that
of the pump head must be in full contact.
– The clamp must be positioned correctly in the
flange recess of both the pump head and the
pump housing. See fig. 11.
Torque: 8 Nm (± 1 Nm).
7.3 Fitting of pump head
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply to the motor
and to the signal relays. Wait at least 5
minutes before you make any
connections in the terminal box. Make
sure that the power supply cannot be
accidentally switched on.
WARNING
Hazardous liquids
Death or serious personal injury
- If the pump is used for a liquid which is
injurious to health, it will be classified as
contaminated. In such cases, take
proper precautions to avoid injury to
health when operating or working on the
pump.
- Wear personal protection equipment.
WARNING
Falling objects
Death or serious personal injury
- If the pump head has been lifted partly
or completely from the pump housing,
pay special attention when fitting the
pump head again.
CAUTION
Crushing of feet
Minor or moderate personal injury
- Wear safety shoes.
- Pay special attention that the pump
head does not fall down when loosening
the clamp. See fig. 8.
WARNING
Pressurised system
Death or serious personal injury
- Pay special attention to any escaping
vapour when loosening the clamp. See
fig. 8.
- Wear personal protection equipment.
TM06 0721 0814
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply to the motor
and to the signal relays. Wait at least 5
minutes before you make any
connections in the terminal box. Make
sure that the power supply cannot be
accidentally switched on.
WARNING
Falling objects
Death or serious personal injury
- If the pump head has been lifted partly
or completely from the pump housing,
pay special attention when fitting the
pump head again.
A

English (GB)
9
If for some reason the pump head has been lifted
from the pump housing, follow the following
procedure in order to mount the pump head
correctly:
1. Visually check that the neck ring is centred in the
pump housing. See fig. 9.
Fig. 9 Centring of neck ring
2. Gently lower the pump head with rotor shaft and
impeller into the pump housing. See fig. 10.
Fig. 10 Lowering of pump head
3. Check the following before you tighten the clamp:
– The contact face of the pump housing and that
of the pump head must be in full contact.
– The clamp must be positioned correctly in the
flange recess of both the pump head and the
pump housing. See fig. 11.
Torque: 8 Nm (± 1 Nm).
Fig. 11 Positioning of clamp ring
7.4 Base plate
Twin-head pumps have tapped holes in the bottom of
the pump housing. You can use the holes for
mounting a base plate.
CAUTION
Crushing of feet
Minor or moderate personal injury
- Wear safety shoes.
- Pay special attention that the pump
head does not fall down when loosening
the clamp. See fig. 8.
WARNING
Pressurised system
Death or serious personal injury
- Pay special attention to any escaping
vapour when loosening the clamp. See
fig. 8.
- Wear personal protection equipment.
TM06 0722 0814
TM06 0723 0814TM06 0724 0814

English (GB)
10
7.5 Insulation
Follow the guidelines in fig. 12 when insulating the
pump.
Fig. 12 Insulation of TPE2, TPE3 pumps
7.6 Frost protection
Drain pumps which are not being used during
periods of frost to avoid damage.
7.7 Cable entries
See the size of the cable entries in section 33. Other
technical data.
7.8 Ensuring motor cooling
Leave at least 50 mm between the end of the fan
cover and a wall or other fixed objects. See fig. 13.
Fig. 13 Minimum distance, D, from the motor to
a wall or other fixed objects
7.9 Outdoor installation
If you install the motor outdoors, provide the motor
with a cover and open the drain holes to avoid
condensation on the electronic components. See fig.
14.
The cover must be sufficiently large to ensure that
the motor is not exposed to direct sunlight, rain or
snow. Grundfos does not supply covers. We
therefore recommend that you have a cover built for
the specific application. In areas with high humidity,
we recommend that you connect the motor
permanently to the mains supply and activate the
built-in standstill heating function. See section
16.25 "Standstill heating".
Fig. 14 Examples of covers, not supplied by
Grundfos
Do not insulate the motor stool as this will
trap any vapour escaping from the shaft
seal, thus causing corrosion. Covering the
motor stool with insulation will also make
inspection and service difficult.
TM05 7918 1613
Pos. Description
A Without insulation
B Correct insulation
C Incorrect insulation
A
BC
TM05 5236 3512
When fitting a cover to the motor, observe
the guidelines in section 7.8 Ensuring
motor cooling.
TM05 3496 3512
In order to maintain the UL mark,
additional requirements apply to the
equipment. See page 84.
D

English (GB)
11
8. Electrical installation
If the power supply cable is damaged, it must be
replaced by the manufacturer, the manufacturer's
service partner or a similarly qualified person.
The user or the installer is responsible for the
installation of correct earthing and protection
according to local regulations. All operations must be
carried out by a qualified electrician.
8.1 Protection against electric shock,
indirect contact
Protective earth conductors must always have a
yellow and green, PE, or yellow, green and blue,
PEN, colour marking.
8.1.1 Protection against mains voltage transients
The motor is protected against mains voltage
transients in accordance with EN 61800-3.
8.1.2 Motor protection
The motor requires no external motor protection. The
motor incorporates thermal protection against slow
overloading and blocking.
8.2 Cable requirements
8.2.1 Cable cross-section
1 x 200-230 V
3 x 380-500 V
3 x 200-240 V
8.2.2 Conductors
Type
Stranded or solid copper conductors.
Temperature rating
Temperature rating for conductor insulation: 60 °C
(140 °F).
Temperature rating for outer cable sheath: 75 °C
(167 °F).
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply to the motor
and to the signal relays. Wait at least 5
minutes before you make any
connections in the terminal box. Make
sure that the power supply cannot be
accidentally switched on.
DANGER
Electric shock
Death or serious personal injury
- Check that the supply voltage and
frequency correspond to the values
stated on the nameplate.
WARNING
Electric shock
Death or serious personal injury
- Connect the motor to protective earth
and provide protection against indirect
contact in accordance with local
regulations.
DANGER
Electric shock
Death or serious personal injury
- Always comply with local regulations as
to cable cross-sections.
Power
[kW]
Conductor
type
Cross section
[mm2][AWG]
0.25 - 1.5 Solid 1.5 - 2.5 16-12
Stranded 1.5 - 2.5 16-12
Power
[kW]
Conductor
type
Cross section
[mm2][AWG]
0.25 - 2.2 Solid 1.5 - 10 16-8
Stranded 1.5 - 10 16-8
3.0 - 11 Solid 2.5 - 10 14-8
Stranded 2.5 - 10 14-8
Power
[kW]
Conductor
type
Cross section
[mm2][AWG]
1.1 - 1.5 Solid 1.5 - 10 16-8
Stranded 1.5 - 10 16-8
2.2 - 5.5 Solid 2.5 - 10 14-8
Stranded 2.5 - 10 14-8

English (GB)
12
8.3 Mains supply
8.3.1 Single-phase supply voltage
• 1 x 200-240 V - 10 %/+ 10 %, 50/60 Hz, PE.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
The wires in the motor terminal box must be as short
as possible. Excepted from this is the separated
earth conductor which must be so long that it is the
last one to be disconnected in case the cable is
inadvertently pulled out of the cable entry.
For maximum backup fuse, see section 30.1 Supply
voltage.
Fig. 15 Example of a mains-connected motor
with mains switch, backup fuse and
additional protection
Fig. 16 Mains connection, single-phase motors
8.3.2 Three-phase supply voltage
Three-phase motors are available for the voltages
below:
• 3 x 380-500 V - 10 %/+ 10 %, 50/60 Hz, PE
• 3 x 200-240 V - 10 %/+ 10 %, 50/60 Hz, PE.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
The wires in the motor terminal box must be as short
as possible. Excepted from this is the separated
earth conductor which must be so long that it is the
last one to be disconnected in case the cable is
inadvertently pulled out of the cable entry.
In order to avoid loose connections, ensure that the
terminal block for L1, L2 and L3 is pressed home in
its socket when the supply cable has been
connected.
For maximum backup fuse, see section 31.1 Supply
voltage.
Only the following motors can be supplied through
an IT network:
• Motors with speed of 1450-2000/2200 rpm and
up to 1.5 kW
• Motors with speed of 2900-4000 rpm or
4000-5900 rpm and up to 2.2 kW.
Fig. 17 Example of a mains-connected motor
with mains switch, backup fuses and
additional protection
DANGER
Electric shock
Death or serious personal injury
- Use the recommended fuse size. See
sections 30.1 Supply voltage and
31.1 Supply voltage.
If you want to supply the motor through an
IT network, make sure that you have a
suitable motor variant. If you are in doubt,
contact Grundfos.
TM05 4034 1912TM05 3494 1512
RCD,
type B
If you want to supply the motor through an
IT network, make sure that you have a
suitable motor variant. If you are in doubt,
contact Grundfos.
Corner earthing is not allowed for supply
voltages above 3 x 240 V and 3 x 480 V,
50/60 Hz.
TM05 3942 1812
L1
L2
L3
L2
L1
L3
PE
RCD,
type B

English (GB)
13
Fig. 18 Mains connection, three-phase motors
8.4 Additional protection
The residual-current circuit breaker must be marked
with the following symbol:
The total leakage current of all the electrical
equipment in the installation must be taken into
account. You find the leakage current of the motor in
sections 30.2 Leakage current and 31.2 Leakage
current, AC.
This product can cause a direct current in the
protective earth conductor.
Overvoltage and undervoltage protection
Overvoltage and undervoltage may occur in case of
unstable power supply or a faulty installation. The
motor is stopped if the voltage falls outside the
permissible voltage range. The motor restarts
automatically when the voltage is again within the
permissible voltage range. Therefore, no additional
protection relay is required.
Overload protection
If the upper load limit is exceeded, the motor
automatically compensates for this by reducing the
speed and stops if the overload condition persists.
The motor remains stopped for a set period. After
this period, the motor automatically attempts to
restart. The overload protection prevents damage to
the motor. Consequently, no additional motor
protection is required.
Overtemperature protection
The electronic unit has a built-in temperature sensor
as an additional protection. When the temperature
rises above a certain level, the motor automatically
compensates for this by reducing the speed and
stops if the temperature keeps rising. The motor
remains stopped for a set period. After this period,
the motor automatically attempts to restart.
Protection against phase unbalance
Three-phase motors must be connected to a power
supply with a quality corresponding to IEC
60146-1-1, class C, to ensure correct motor
operation at phase unbalance. This also ensures
long life of the components.
8.5 Connection terminals
The descriptions and terminal overviews in this
section apply to both single-phase and three-phase
motors.
For maximum tightening torques, see section
33.1 Torques.
TM05 3495 1512
DANGER
Electric shock
Death or serious personal injury
- Only use residual-current circuit
breakers (ELCB, GFCI, RCD) of type B.
The motor is protected against transients
from the power supply according to EN
61800-3. In areas with high lightning
intensity, we recommend external lightning
protection.

English (GB)
14
8.5.1 Connection terminals, advanced functional
module, FM 300
The advanced module has these connections:
• Three analog inputs.
• One analog output.
• Two dedicated digital inputs.
• Two configurable digital inputs or open-collector
outputs.
• Input and output for Grundfos Digital Sensor.
The input and output are not applicable for TPE2,
TPE2 D pumps. The built-in sensor for TPE3,
TPE3 D pumps is connected to this input.
• Two Pt100/1000 inputs.
For some pumps, the built-in temperature sensor
is connected to Pt100/1000 input 1 (terminals 17
and 18).
• Two LiqTec sensor inputs.
• Two signal relay outputs.
• GENIbus connection.
See fig. 19.
• Inputs and outputs
All inputs and outputs are internally separated
from the mains-conducting parts by reinforced
insulation and galvanically separated from other
circuits.
All control terminals are supplied by protective
extra-low voltage, PELV, thus ensuring protection
against electric shock.
• Signal relay outputs
– Signal relay 1:
LIVE:
You can connect supply voltages up to 250
VAC.
PELV:
The output is galvanically separated from
other circuits. Therefore, you can connect the
supply voltage or protective extra-low voltage
to the output as desired.
– Signal relay 2:
PELV:
The output is galvanically separated from
other circuits. Therefore, you can connect the
supply voltage or protective extra-low voltage
to the output as desired.
• Mains supply, terminals N, PE, L or L1, L2, L3,
PE
* If you use an external supply source, make sure
that there is a connection to earth.
Fig. 19 Connection terminals, FM 300 (option)
Digital input 1 is factory-set to be start-stop
input where open circuit results in stop. A
jumper has been factory-fitted between
terminals 2 and 6. Remove the jumper if
digital input 1 is to be used as external
start-stop or any other external function.
DANGER
Electric shock
Death or serious personal injury
- Make sure that the wires to be
connected to the connection groups
below are separated from each other by
reinforced insulation in their entire
lengths.
TM05 3509 3512
3
15
8
26
23
25
24
7
21
20
22
B
Y
6
5
2
4
10
A
+24 V*
1
14
9
12
17
19
11
18
+24 V*
+
+24 V* OC DI
+24 V*/5 V*
+24 V*
+
++
+24 V*/5 V*
+24 V*
+24 V*
+
+
+24 V*/5 V*
+24 V*
+5 V*
AI2
GDS RX
GDS TX
GND
GENIbus A
GENIbus B
+5 V
+24 V
+24 V
GND
GENIbus Y
GND
+5 V
DI1
AI1
DI3/OC1
LiqTec
AI3
GND
DI2
LiqTec
GND
AO
Pt100/1000
Pt100/1000
DI4/OC2
GND
+24 V* OC DI
GND
NC
C2
NO
NC
C1
NO
+5 V*

English (GB)
15
Terminal Type Function
NC Normally closed
contact
Signal relay 1
LIVE or PELV
C1 Common
NO Normally open
contact
NC Normally closed
contact
Signal relay 2
PELV only
C2 Common
NO Normally open
contact
18 GND Earth
11 DI4/OC2
Digital input and
output, configurable.
Open collector: Max.
24 V resistive or
inductive.
19 Pt100/1000 input
2
Pt100/1000 sensor
input
17 Pt100/1000 input
1
Pt100/1000 sensor
input
12 AO
Analog output:
0-20 mA / 4-20 mA
0-10 V
9GND Earth
14 AI3
Analog input:
0-20 mA / 4-20 mA
0-10 V
1DI2 Digital input,
configurable
21 LiqTec sensor
input 1
LiqTec sensor input
white conductor
20 GND
Earth
brown and black
conductors
22 LiqTec sensor
input 2
LiqTec sensor input
blue conductor
10 DI3/OC1
Digital input or output,
configurable.
Open collector:
maximum 24 V
resistive or inductive.
4AI1
Analog input:
0-20 mA / 4-20 mA
0.5 - 3.5 V / 0-5 V /
0-10 V
2DI1 Digital input,
configurable
5+5V
Supply to
potentiometer and
sensor
6GND Earth
A GENIbus, A GENIbus, A (+)
Y GENIbus, Y GENIbus, GND
B GENIbus, B GENIbus, B (-)
3GND Earth
15 +24 V Supply
8 +24 V Supply
26 +5 V
Supply to
potentiometer and
sensor
23 GND Earth
25 GDS TX Grundfos Digital
Sensor output
24 GDS RX Grundfos Digital
Sensor input
7AI2
Analog input:
0-20 mA / 4-20 mA
0.5 - 3.5 V / 0-5 V /
0-10 V

English (GB)
16
8.6 Signal cables
• Use screened cables with a cross-sectional area
of minimum 0.5 mm2and maximum 1.5 mm2for
external on/off switch, digital inputs, setpoint and
sensor signals.
• Connect the screens of the cables to frame at
both ends with good connection. The screens
must be as close as possible to the terminals.
See fig. 20.
Fig. 20 Stripped cable with screen and wire
connections
• Always tighten screws for frame connections
whether a cable is fitted or not.
• The wires in the motor terminal box must be as
short as possible.
8.7 Bus connection cable
8.7.1 New installations
For the bus connection, use a screened 3-core cable
with a cross-sectional area of minimum 0.5 mm2and
maximum 1.5 mm2.
• If the motor is connected to a unit with a cable
clamp which is identical to the one on the motor,
connect the screen to this cable clamp.
• If the unit has no cable clamp as shown in fig. 21,
leave the screen unconnected at this end.
Fig. 21 Connection with screened 3-core cable
8.7.2 Replacing a motor
• If you have used a screened 2-core cable in the
existing installation, connect the cable as shown
in fig. 22.
Fig. 22 Connection with screened 2-core cable
• If you have used a screened 3-core cable in the
existing installation, follow the instructions in
section 8.7.1 New installations.
TM02 1325 4402
TM05 3973 1812TM02 8842 0904
A
Y
B
A
Y
B
1
2
3
1
2
3
Motor
A
Y
B
A
Y
B
1
2
1
2
Motor

English (GB)
17
9. Startup
9.1 Flushing the pipe system
9.2 Priming the pump
Closed systems or open systems where the
liquid level is above the pump inlet
1. Close the outlet isolating valve and loosen the
vent screw in the motor stool. See fig. 23.
2. Slowly open the isolating valve in the inlet pipe
until a steady stream of liquid runs out of the vent
hole.
3. Tighten the vent screw and completely open the
isolating valve(s).
Open systems where the liquid level is below the
pump inlet
Make sure that the inlet pipe and the pump is filled
with liquid and vented before you start the pump.
1. Close the outlet isolating valve and open the
isolating valve in the inlet pipe.
2. Loosen the vent screw. See fig. 23.
3. Remove the plug from one of the pump flanges,
depending on the pump location.
4. Pour liquid through the priming port until the inlet
pipe and the pump are filled with liquid.
5. Replace the plug and tighten securely.
6. Tighten the vent screw.
You can fill the inlet pipe with liquid and vent it before
you connect it to the pump. You can also install a
priming device before the pump.
Fig. 23 Position of vent screw
9.3 Starting the pump
1. Before starting the pump, completely open the
isolating valve on the inlet side of the pump and
leave the outlet isolating valve almost closed.
2. Start the pump. See section 11. User interfaces.
3. Vent the pump by loosening the vent screw in the
motor stool until a steady stream of liquid runs
out of the vent hole. See fig. 23.
4. When the pipe system has been filled with liquid,
slowly open the outlet isolating valve until it is
completely open.
9.4 Shaft seal run-in
The seal faces are lubricated by the pumped liquid,
meaning that there may be a certain amount of
leakage from the shaft seal.
When the pump is started up for the first time, or
when a new shaft seal is installed, a certain run-in
period is required before the leakage is reduced to
an acceptable level. The time required for this
depends on the operating conditions, i.e. every time
the operating conditions change, a new run-in period
will be started.
Under normal conditions, the leaking liquid will
evaporate. As a result, no leakage will be detected.
However, liquids such as kerosene will not
evaporate. The leakage may therefore be seen as a
shaft seal failure.
Before starting up the pump for the first
time, clean the pipe system thoroughly by
flushing it and filling it with clean water.
Do not use the pump for flushing the pipe
system.
The warranty does not cover any damage
caused by flushing the pipe system by
means of the pump.
Fill the pump with liquid and vent the pump
before starting the pump. To ensure
correct venting, the vent screw must point
upwards.
WARNING
Escaping hot or cold liquids
Death or serious personal injury
- Pay attention to the direction of the vent
hole, and make sure that the escaping
hot or cold liquid does not cause injury
to persons or damage to the equipment.
- Wear personal protection equipment.
TM05 7922 1613
WARNING
Escaping hot or cold liquids
Death or serious personal injury
- Pay attention to the direction of the vent
hole, and make sure that the escaping
hot or cold liquid does not cause injury
to persons or damage to the equipment.
- Wear personal protection equipment.

English (GB)
18
10. Operating conditions
10.1 Maximum number of starts and stops
The number of starts and stops via the power supply
must not exceed four times per hour.
When switched on via the power supply, the pump
will start after approximately 5 seconds.
If a higher number of starts and stops is desired, use
the input for external start/stop when starting or
stopping the pump.
When started via an external on/off switch, the pump
will start immediately.
10.2 Alternating operation of twin-head
pumps
On twin-head pumps, the duty and backup pumps
must be alternated on a regular basis, i.e. once a
week, to ensure an even distribution of the operating
hours on both pumps. The pumps alternate
automatically. See section 16.49 "Multipump setup"
(Setup of multi-pump system).
If twin-head pumps are used for pumping domestic
hot water, the duty and backup pumps must be
alternated on a regular basis, i.e. once a day, to
avoid blocking of the backup pump due to deposits
such as calcareous deposits. The pumps alternate
automatically. See section 16.49 "Multipump setup"
(Setup of multi-pump system).
10.3 Liquid temperature
-25 °C (~ -13 °F) up to +120 °C (~ +248 °F).
The maximum liquid temperature depends on the
shaft seal type and the pump type.
Depending on the cast-iron version and the pump
application, the maximum liquid temperature may be
limited by local regulations and laws.
The maximum liquid temperature is stated on the
pump nameplate.
10.4 Ambient temperature
10.4.1 Ambient temperature during storage and
transportation
Minimum: -30 °C.
Maximum: 60 °C.
10.4.2 Ambient temperature during operation
The motor can operate with the rated power output,
P2, at 50 °C, but continuous operation at higher
temperatures reduces the expected product life. If
the motor is to operate at ambient temperatures
between 50 and 60 °C, select an oversized motor.
Contact Grundfos for further information.
10.5 Operating pressure or test pressure
The pressure test has been made with water
containing anti-corrosive additives at a temperature
of 20 °C (~ 68 °F).
10.6 Inlet pressure
To ensure optimum and quiet pump operation, the
inlet pressure, system pressure, must be adjusted
correctly. See the table on page 86.
For the calculation of specific inlet pressures,
contact the local Grundfos company or see the data
booklet for TP, TPD, TPE, TPED, TPE2, TPE2 D,
TPE3 and TPE3,D on Grundfos Product Center
(https://product-selection.grundfos.com/).
10.7 Electrical data
See sections 30. Technical data, single-phase
motors and 31. Technical data, three-phase motors.
For specific motor data, see the motor nameplate.
10.8 Sound pressure level
See section 33.2 Sound pressure level.
10.9 Environment
Non-aggressive and non-explosive atmosphere.
If the pump is used for liquids at high
temperatures, the life of the shaft seal and
the built-in Grundfos sensor may be
reduced.
3 x 200-240 V 3 x 380-500 V
Minimum -20 °C -20 °C
Maximum 40 °C 50 °C
Pressure
stage
Operating
pressure Test pressure
[bar] [MPa] [bar] [MPa]
PN 6 6 0.6 10 1.0
PN 6 / PN 10 10 1.0 15 1.5
PN 16 16 1.6 24 2.4

English (GB)
19
10.10 Installation altitude
Installation altitude is the height above sea level of
the installation site.
Motors installed up to 1000 m above sea level can
be loaded 100 %.
The motors can be installed up to 3500 m above sea
level.
Fig. 24 Motor output power in relation to altitude
In order to maintain the galvanic isolation and ensure
correct clearance according to EN 60664-1:2007,
you must adapt the supply voltage to the altitude:
Fig. 25 Supply voltage for three-phase motor in
relation to altitude
Fig. 26 Supply voltage for single-phase motor in
relation to altitude
10.11 Humidity
Maximum humidity: 95 %.
If the humidity is constantly high and above 85 %,
one of the drain holes in the drive-end flange must
be open.
See section 7. Mechanical installation.
10.12 Motor cooling
To ensure cooling of motor and electronics, observe
the following:
• Position the motor in such a way that adequate
cooling is ensured. See section 7.8 Ensuring
motor cooling.
• The temperature of the cooling air must not
exceed 50 °C.
• Keep cooling fins and fan blades clean.
Motors installed more than 1000 m above
sea level must not be fully loaded due to
the low density and consequent low
cooling effect of the air.
TM05 5243 3717TM06 9866 3617
0
60
80
90
70
100
500 1000 1500 2000 2500 3000 3500
Altitude [m]
P2 [%]
500
480
460
440
420
380
400
0 500 1000 2000 2500 3000 3500 4000 1500
Supply voltage [V]
Altitude [m]
TM06 9867 3617
0 500 1000 1500 2000 2500 3000 3500 4000
200
210
220
230
240
250
Supply voltage [V]
Altitude [m]

English (GB)
20
11. User interfaces
You can make pump settings by means of the
following user interfaces:
Control panels
• Standard control panel.
See section 12. Standard control panel.
• Advanced control panel.
See section 13. Advanced control panel.
Remote controls
• Grundfos GO.
See section 15. Grundfos GO.
If the power supply to the pump is switched off, the
settings are stored.
12. Standard control panel
Fig. 27 Standard control panel
WARNING
Hot surface
Death or serious personal injury
- Only touch the buttons on the display as
the product may be very hot.
WARNING
Electric shock
Death or serious personal injury
- If the control panel is cracked or
perforated, replace it immediately.
Contact the nearest Grundfos sales
company.
Pump variant Fitted as standard Option
TPE3, TPE3 D - -
TPE2, TPE2 D ●-
TM05 4848 3512
1
2
3
4
5
Stop
Pos. Symbol Description
1
Grundfos Eye
Shows the operating status of
the pump.
See section 20. Grundfos Eye
for further information.
2-
Light fields for indication of
setpoint.
3Up and down. Changes the
setpoint.
4
Allows radio communication
with Grundfos GO and other
products of the same type.
When you try to establish radio
communication between the
pump and Grundfos GO or
another pump, the green
indicator light in Grundfos Eye
on the pump flashes
continuously. Press on the
pump control panel to allow
radio communication with
Grundfos GO and other
products of the same type.
5
Makes the pump ready for
operation as well as starts and
stops the pump.
Start
If you press the button when
the pump is stopped, the pump
only starts if no other functions
with higher priority have been
enabled. See section
19. Priority of settings.
Stop
If you press the button when
the pump is running, the pump
always stops. The "Stop" text
next to the button is on.