Wilo CronoLine-IL-E User manual

Pioneering for You
·
Wilo-CronoLine-IL-E
Wilo-CronoBloc-BL-E
2227275 • Ed.01/2023-04
en Installation and operating instructions

CronoLine-IL-E
https://qr.wilo.com/238
CronoBloc-BL-E MX
https://qr.wilo.com/219

Fig. I IL-E

Fig. II: BL-E

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Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04 5
Table of Contents
1 General information...................................................................6
1.1 About these instructions ..................................................... 6
1.2 Copyright ...............................................................................6
1.3 Subject to change................................................................. 6
2 Safety...........................................................................................6
2.1 Identification of safety instructions................................... 6
2.2 Personnel qualifications....................................................... 7
2.3 Electrical work .......................................................................8
2.4 Transport................................................................................ 8
2.5 Installing/dismantling........................................................... 9
2.6 During operation ................................................................... 9
2.7 Maintenance tasks..............................................................11
2.8 Operator responsibilities....................................................11
3 Transport and storage .............................................................12
3.1 Shipping................................................................................12
3.2 Transport inspection ..........................................................12
3.3 Storage .................................................................................12
3.4 Transport for installation/dismantling purposes............13
4 Application/use.........................................................................14
4.1 Intended use........................................................................14
4.2 Misuse...................................................................................15
5 Product information.................................................................15
5.1 Type key...............................................................................15
5.2 Technical data .....................................................................15
5.3 Scope of delivery.................................................................17
5.4 Accessories ..........................................................................17
6 Description of the pump..........................................................17
6.1 Design...................................................................................17
6.2 Electronic module ...............................................................18
6.3 Control modes.....................................................................18
6.4 Twin-head pump function/Y-pipe application ..............19
6.5 Other functions ...................................................................23
6.6 Variants ................................................................................24
7 Installation ................................................................................24
7.1 Personnel qualifications.....................................................24
7.2 Operator responsibilities....................................................24
7.3 Safety....................................................................................24
7.4 Permitted installation positions and change of the ar-
rangement of components before the installation........25
7.5 Preparing the installation...................................................28
8 Electrical connection ...............................................................33
8.1 Fuse on mains side..............................................................34
8.2 Requirements and limit values for harmonic currents...35
8.3 Preparing the electrical connection .................................35
8.4 Terminals..............................................................................37
8.5 Terminal assignment ..........................................................38
8.6 Differential pressure sensor connection .........................39
8.7 Making the electrical connection .....................................40
9 Protective devices....................................................................40
10 Commissioning .........................................................................40
10.1 Personnel qualifications......................................................41
10.2 Filling and venting................................................................41
10.3 Twin-head pump installation/Y-pipe installation...........42
10.4 Setting of pump output ......................................................43
10.5 Switching on the pump .......................................................43
10.6 Behaviour after being switched on....................................44
10.7 Operation ..............................................................................44
10.8 Setting the control mode....................................................45
11 Pump operation.........................................................................46
11.1 Operating elements .............................................................46
11.2 Display structure ..................................................................47
11.3 Explanation of standard symbols.......................................47
11.4 Symbols in graphics/instructions.......................................47
11.5 Display modes.......................................................................48
11.6 Operating instructions ........................................................50
11.7 Menu elements reference ...................................................54
12 Decommissioning......................................................................59
12.1 Switching off the pump and temporary shutdown.........59
12.2 Shutdown and storage ........................................................60
13 Maintenance/repair...................................................................60
13.1 Operation monitoring..........................................................61
13.2 Maintenance tasks ...............................................................62
13.3 Draining and cleaning..........................................................62
13.4 Replacing the mechanical seal ...........................................62
13.5 Replacing the motor/drive ..................................................64
14 Spare parts.................................................................................68
15 Faults, causes and remedies ....................................................69
15.1 Mechanical faults .................................................................70
15.2 Error codes, display ..............................................................71
15.3 Acknowledge fault...............................................................75
16 Factory settings ........................................................................80
17 Disposal......................................................................................80
17.1 Oils and lubricants................................................................80
17.2 Water-glycol mixture ..........................................................80
17.3 Protective clothing ..............................................................80
17.4 Information on the collection of used electrical and elec-
tronic products .....................................................................80

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6 Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04
1 General information
1.1 About these instructions These instructions form part of the product. Compliance with the instructions is essential
for correct handling and use:
•Read the instructions carefully before all activities.
•Keep the instructions in an accessible place at all times.
•Observe all product specifications.
•Observe the markings on the product.
The language of the original operating instructions is German. All other languages of these
instructions are translations of the original operating instructions.
1.2 Copyright WILO SE © 2023
The reproduction, distribution and utilization of this document as well as the communica-
tion of its contents to others without express authorization is prohibited. Offenders will be
held liable for the payment of damages. All rights reserved.
1.3 Subject to change Wilo shall reserve the right to change the listed data without notice and shall not be liable
for technical inaccuracies and/or omissions. The illustrations used may differ from the ori-
ginal and are intended as an example representation of the device.
2 Safety This chapter contains basic instructions for the individual life
cycles of the product. Failure to observe this information carries
the following risks:
•Danger to persons from electrical, mechanical and bacteriolo-
gical effects as well as electromagnetic fields
•Environmental damage from discharge of hazardous sub-
stances
•Damage to property
•Failure of important product functions
•Failure of required maintenance and repair procedures
Failure to observe the instructions will result in the loss of any
claims for damages.
The directions and safety instructions in the other sections
must also be observed!
2.1 Identification of safety
instructions
These installation and operating instructions set out safety in-
structions for preventing personal injury and damage to property.
These safety instructions are shown differently:
•Safety instructions relating to personal injury start with a signal
word, are preceded by a corresponding symbol and are shaded
in grey.
DANGER
Type and source of the danger!
Consequences of danger and instructions for avoidance.
•Safety instructions relating to property damage start with a
signal word and are displayed without a symbol.

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Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04 7
CAUTION
Type and source of the danger!
Consequences or information.
Signal words
•DANGER!
Failure to follow the instructions will result in serious injuries or
death!
•WARNING!
Failure to follow the instructions can lead to (serious) injury!
•CAUTION!
Failure to follow the instructions can lead to potentially irrepar-
able property damage.
•NOTICE!
Useful information on handling the product
Symbols
These instructions use the following symbols:
Danger – high voltage
General warning symbol
Warning – risk of cutting injuries
Warning – hot surfaces
Personal protective equipment: wear safety footwear
Personal protective equipment: Wear safety gloves
Personal protective equipment: wear safety glasses
Useful information
2.2 Personnel qualifications Personnel must:
•Be instructed about locally applicable regulations governing ac-
cident prevention.
•Have read and understood the installation and operating in-
structions.
Personnel must have the following qualifications:

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8 Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04
•Electrical work: Electrical work must be performed by a quali-
fied electrician.
•Installation/dismantling work: The installation/dismantling
must be carried out by a qualified technician who is trained in
the use of the necessary tools and fixation materials.
•The product must be operated by persons who are instructed
on how the complete system functions.
•Maintenance tasks: The technician must be familiar with the
use of operating fluids and their disposal.
Definition of “qualified electrician”
A qualified electrician is a person with appropriate technical edu-
cation, knowledge and experience who can identify and prevent
electrical hazards.
The operator must confirm and ensure the field of authority, the
competence and the monitoring of the personnel. If the person-
nel do not possess the necessary knowledge, they must be
trained and instructed. If required, this can be carried out by the
product manufacturer at the operator’s request.
2.3 Electrical work •Have electrical work carried out by a qualified electrician.
•When connecting to the mains supply, comply with the nation-
ally applicable guidelines, standards and regulations as well as
specifications issued by the local energy supply companies.
•Before commencing work, disconnect the product from the
mains and secure it against being switched on again.
•Give staff training on how to establish the electrical connection
and the methods for switching off the product.
•Observe the technical information in these installation and op-
erating instructions as well as on the rating plate.
•Earth the product.
•Comply with the manufacturer’s specifications when connect-
ing the product to electrical switching systems.
•Have a defective connection cable replaced immediately by a
qualified electrician.
2.4 Transport •Wear protective equipment:
–Safety gloves for protection against cuts
–Safety shoes
–Sealed safety glasses
–Safety helmet (when using lifting equipment)
•Only use legally specified and approved lifting slings.
•Select the lifting sling based on the prevailing conditions
(weather, slinging point, load etc.).
•Always attach the lifting sling to the designated slinging points
(lifting eyes).

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Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04 9
•Position the lifting accessory in a way that ensures stability
during use.
•When using lifting equipment, a second person must be
present to coordinate the procedure if required (e.g. if the op-
erator’s field of vision is blocked).
•Persons must not stand underneath suspended loads. Do not
move loads over workplaces where people are present.
Please note the following information during transport and
prior to installation:
•Do not reach into suction ports, discharge ports or other open-
ings.
•Avoid the penetration of foreign objects. To this end, leave the
protective covers or packaging on until they have to be re-
moved for installation.
•Packaging and covers may be removed from suction or outlet
openings for inspection purposes. They must be put back on
afterwards to protect the pump and ensure safety.
2.5 Installing/dismantling •Wear protective equipment:
–Safety shoes
–Safety gloves for protection against cuts
–Safety helmet (when using lifting equipment)
•Locally applicable laws and regulations on work safety and ac-
cident prevention must be complied with.
•The procedure described in the installation and operating in-
structions for shutting down the product/unit must be strictly
observed.
•Disconnect the device from the mains and secure it against be-
ing switched on again without authorisation.
•All rotating parts must be at a standstill.
•Close the gate valve in the inlet and in the pressure pipe.
•Provide adequate aeration in enclosed spaces.
•Clean the device thoroughly. Disinfect devices that use fluids
hazardous to health!
•Make sure that there is no risk of explosion when carrying out
any type of welding work or work with electrical devices.
2.6 During operation •Wear protective equipment:
–Safety shoes
–Safety gloves for protection against cuts
–Safety helmet (when using lifting accessories)
•The work area in which the product is used is not a recreational
area. No persons are allowed in the work area during operation.
•The operator must report any faults or irregularities to a line
manager immediately.

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10 Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04
•If hazardous defects occur, the operator must immediately de-
activate the device. Hazardous defects include:
–Malfunction of safety and monitoring devices
–Damage to housing parts
–Damage to electrical equipment
•Open all gate valves in the piping on both the suction and dis-
charge sides.
•Collect any leakage of fluids and operating fluids immediately
and dispose of it according to the locally applicable guidelines.
•Tools and other objects should only be kept in their designated
places.
Thermal hazards
Most pump and drive surfaces can become hot during operation.
The surfaces in question also remain hot after switching off the
unit. These surfaces may only be touched with extreme caution.
Wear safety gloves if it is essential to touch hot surfaces.
Make sure that the drained water is not too hot for more intensive
contact with skin.
Employ suitable fittings to protect components that can become
hot against skin contact.
Such fittings must not impair the ventilation required for cooling.
Hazard due to articles of clothing or other objects being caught
To avoid the dangers presented by the rotating parts of the
device:
•Do not wear loose or frayed clothing or jewellery.
•Do not dismantle devices for protecting against accidental con-
tact with moving parts (e.g. coupling guard).
•Only put the device into operation once this protection is in
place.
•The devices for protecting against accidental contact with
moving parts may only be removed when the system is at a
standstill.
Hazards due to noise
Observe the applicable health and safety regulations. If the device
is operated under normal operating conditions, the operator must
measure the sound pressure.
Sound pressure levels of 80dB(A) and above must be noted in the
work regulations! The operator must also introduce the following
preventative measures:
•Inform the operating personnel
•Provide hearing protection
For a sound pressure level of 85dB(A) and above, the operator
must:

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Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04 11
•Make it a mandatory requirement to wear hearing protection
•Demarcate the noisy areas
•Take measures to reduce noise (e.g. insulation, noise barriers)
Leakages
Observe local standards and regulations. Avoid pump leakages to
protect persons and the environment against hazardous (explos-
ive, toxic or hot) substances.
Ensure that a dry run of the pump is not possible. A dry run can
damage the shaft seal and thereby cause leakages.
2.7 Maintenance tasks •Wear the following protective equipment:
–Sealed safety glasses
–Safety shoes
–Safety gloves for protection against cuts
•Only carry out the maintenance tasks described in these install-
ation and operating instructions.
•Only original parts from the manufacturer may be used for
maintenance and repairs. Use of parts other than original parts
releases the manufacturer from any liability.
•Collect any leakage of fluid and operating fluid immediately and
dispose of it according to the locally applicable guidelines.
•Tools and other objects should only be kept in their designated
places.
•After completing work, reattach all safety and monitoring
devices and check that they function properly.
2.8 Operator responsibilities •Provide installation and operating instructions in a language
which the personnel can understand.
•Make sure that personnel are suitably trained for the specified
work.
•Verify the area of responsibility and individual responsibilities
of personnel.
•Provide the necessary protective equipment and make sure
that personnel wears it.
•Train personnel with regard to the operating principles of the
system.
•Eliminate risks from electrical current.
•Equip hazardous components (extremely cold, extremely hot,
rotating, etc.) with a guard to be provided by the customer.
•Remove leakages of hazardous fluids (e.g. explosive, toxic or
hot) in such a way that no danger is posed to persons or the en-
vironment. Comply with national statutory provisions.
•Keep highly flammable materials at a safe distance from the
product.
•Ensure compliance with the regulations for accident preven-
tion.

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12 Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04
•Ensure compliance with local directives or general directives
[e.g. IEC, VDE, etc.] and instructions from local energy supply
companies.
Follow all information that appears on the product and ensure
that it remains permanently legible:
•Warning and hazard notices
•Rating plate
•Direction of rotation arrow/symbol for direction of flow
•Labelling of connections
Children and persons younger than 16years or with reduced
physical, sensory or mental capacities or limited experience are
prohibited from handling the product! A technician must super-
vise persons younger than 18years!
3 Transport and storage
3.1 Shipping The pump is secured to a pallet ex works, packaged in a box and protected against dirt and
moisture.
3.2 Transport inspection Check delivery immediately for damage and completeness. Defects must be noted on the
freight documentation! Defects must be notified to the transport company or the manu-
facturer immediately on the day of receipt of shipment. Subsequently notified defects can
no longer be asserted.
Only remove the outer packaging at the place of utilisation to ensure that the pump is not
damaged during transport.
3.3 Storage
CAUTION
Damage due to incorrect handling during transport and stor-
age!
Protect the product from moisture, frost and mechanical damage during
transport and temporary storage.
If available, leave the covers on the pipe connections so that no dirt and other foreign mat-
ter can get into the pump housing.
To avoid scoring at the bearings and sticking, turn the pump shaft once a week using a
socket wrench.
If a longer storage time is required, contact Wilo for preservation measures.
WARNING
Risk of injury due to incorrect transport!
If the pump is transported again at a later date, it must be packaged so
that it cannot be damaged during transport. Use the original packaging
for this, or choose equivalent packaging.

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Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04 13
3.4 Transport for installation/dismant-
ling purposes WARNING
Risk of personal injury!
Incorrect transport can lead to personal injury!
• Unload boxes, lathed spaces, pallets or cartons, depending on the size
and construction, with forklift trucks or with slings.
• Always lift heavy parts of more than 30kg with hoisting gear that is in
accordance with local regulations.
– The bearing capacity has to be adapted to the weight!
• Transport the pump using approved lifting gear (block and tackle,
crane etc.). Lifting gear must be attached to the pump flanges and, if
necessary, to the outer motor diameter.
– Securing against slipping is required for this!
• When lifting machines or parts with eyes, only use load hooks or
shackles that are in accordance with local safety regulations.
• The transport eyes on the motor are only for transporting the motor,
but are not approved for transporting the complete pump.
• If load chains or ropes are put over sharp edges, a guard has to be
used or they have to be put through eyes.
• When using a block and tackle or similar hoisting gear, make sure that
the load is lifted vertically.
• Prevent the suspended load from swinging.
– Swinging can be avoided by using a second block and tackle. The
direction of pull of both block and tackles must be less than 30° to
the vertical.
• Never subject load hooks, eyes or shackles to bending forces-their
load axes have to be in the direction of the tractive forces!
• When lifting, make sure that the load limit of a load rope is reduced
for diagonal pulling.
– The safety and effectiveness of a stranding is best ensured when
all load-bearing elements are loaded in the vertical direction to the
greatest extent possible. If need be, use a lifting arm which can be
attached vertically to the load rope.
• Set up a safety zone in such a way that there is no danger in the event
that the load or a part of the load slips or the hoisting gear breaks or
tears.
• Never leave a load longer than necessary in a suspended position!
Make sure there is no danger to the personnel when accelerating and
slowing down during the lifting procedure.
Fig.1: Transporting the pump
For lifting with a crane, the pump must be supported by suitable belts or load ropes, as
shown. Place belts or load ropes in loops around the pump, which tighten from the pump’s
own net weight.
The transport eyes on the motor are only for guiding when the load is being carried!
WARNING
Damaged transport lugs can break off and cause considerable
personal injury.
• Check the transport lugs before use for damage and secure fixation.

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14 Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04
Fig.2: Transporting the motor
The transport eyes on the motor are only for transporting the motor, but are not approved
for transporting the complete pump!
DANGER
Risk of fatal injury from falling parts!
The pump itself and pump parts can be extremely heavy. Falling parts pose
a risk of cuts, crush injuries, bruises or impacts, which can be fatal.
• Always use suitable lifting equipment and secure parts against falling.
• Never stand underneath a suspended load.
• During storage and transport, as well as before all installation and as-
sembly work, ensure that the pump is in a safe position and standing
securely.
WARNING
Personal injury due to unsecured installation of the pump!
The base with the threaded holes is used for fixation only. When standing
freely, the pump might not be sufficiently stable.
• Never place the pump unsecured on the pump support feet.
4 Application/use
4.1 Intended use The glanded pumps of the IL-E (inline single) and BL-E (block) series are intended for use as
circulators in building services.
They may be used for:
•Hot-water heating systems
•Cooling and cold water circulation systems
•Industrial circulation systems
•Heat carrier circuits
•Irrigation
The pumps are only approved for the fluids specified in the “Technical data” section.
Installation within a building:
Typical installation locations are technical rooms within the building with other domestic
installations. No provision has been made for direct installation of the pump in rooms used
for other purposes (residential and work rooms). The installation location must be dry, well
ventilated and frost-resistant.
Installation outside a building (outdoor installation)
•Observe permissible environmental conditions and protection class.
•Install the pump in a housing as weather protection. Observe permissible ambient tem-
peratures (see “Technical data” table).
•Protect the pump against the effects of weather, for example, direct sunlight, rain and
snow.
•Protect the pump so that the condensate drain openings remain free of dirt.
•Take suitable measures to prevent the formation of condensation water.
Intended use also includes observance of these instructions. Any other use is regarded as
non-compliant with the intended use.

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Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04 15
4.2 Misuse
WARNING
Misuse of the pump can lead to dangerous situations and dam-
age!
Non-permitted substances in the fluid can destroy the pump. Abrasive
solids (e.g. sand) increase pump wear.
• Never use fluids other than those approved by the manufacturer.
• Highly flammable materials/fluids should always be kept at a safe dis-
tance from the device.
• Never allow unauthorised persons to carry out work.
• Never operate the pump beyond the specified limits of use.
• Never carry out unauthorised conversions.
• Use authorised accessories and genuine spare parts only.
5 Product information
5.1 Type key Example:
IL-E 80/130-5.5/2-xx
BL-E 65/130-5.5/2-xx
IL
BL
Flange-end pump as in-line single pump
Flange-end pump as monoblock pump
-E With electronic module for electronic speed control
80 Nominal diameter DN of the flange connection in mm
(for BL-E: discharge side)
130 Impeller nominal diameter in mm
5.5 Rated power P2 in kW
2 Number of poles, motor
xx Variant, e.g. R1 – without differential pressure sensor
Table1: Type key
5.2 Technical data Property Value Note
Speed range 750...2900rpm
380...1450rpm
Depending on pump type
Nominal diameters DN IL-E: 40...200mm
BL-E: 32...150mm (discharge
side)
Pipe and pressure measure-
ment connections
Flange PN16 in accordance
with DINEN1092-2
Permissible min./max. fluid
temperature
-20°C...+140°C Depends on fluid
Ambient temperature during
operation min./max.
0°C...+40°C Lower or higher ambient
temperatures on request
Temperature during storage
min./max.
-20°C...+60°C
Max. permissible operating
pressure
16bar (to +120°C)
13bar (to +140°C)
Insulation class F
Protection class IP55

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16 Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04
Property Value Note
Electromagnetic compatib-
ility1)
Interference emission in acc.
with:
Interference immunity in
acc. with:
EN61800-3:2018-09
EN61800-3:2018-09
Residential environment
(C1)
Industrial environment (C2)
Sound-pressure level2) LpA,1m <83dB(A)  ref. 20µPa Depending on pump type
Permissible fluids3) Heating water in accordance
with VDI 2035 part1 and
part2
Cooling/cold water
Water-glycol mixture to 40%
vol.
Water-glycol mixture to 50%
vol.
Standard version
Standard version
Standard version
Special version only
Permissible fluids3) Heat carrier oil
Other fluids (on request)
Special version or auxiliary
equipment (at additional
charge)
Electrical connection 3~380V -5% +10% 50/60Hz
3~400V ±10%, 50/60Hz
3~440V, ±10%, 50/60Hz
Supported mains types: TN,
TT, IT4)
Internal electric circuit PELV, galvanically isolated
Speed control Built-in frequency converter
Relative humidity For Tenvironment = 30°C:
90%, non-condensing
For Tenvironment = 40°C:
60%, non-condensing
1) This product is a professional device within the meaning of EN61000-3-2.
2) Mean value of the sound-pressure levels on a spatial cuboid measuring surface at a dis-
tance of 1m from the pump surface in accordance with DINENISO3744.
3) For additional information on permissible fluids, see “Fluids”.
4) For motor powers of 11...22kW, electronic modules for IT networks are optionally
available. Compliance with the specified values in accordance with EN61800-3 can only
be guaranteed for the standard version of TN/TT networks. Non-observance can result in
EMC faults.
Table2: Technical data
Additional information
CH
Permissible fluids
Heating pumps Heating water
(in accordance with VDI 2035/VdTÜVTch1466/CH: in ac-
cordance with SWKIBT102-01)
...
No oxygen binding agents, no chemical sealants (ensure
closed system from corrosion perspective according to VDI
2035 (CH: SWKI BT 102-01); rework leaky points).
Note that water-glycol mixtures or fluids with a viscosity different than that of clean water
increase the power consumption of the pump. Only use mixtures with corrosion protection.
Observe the relevant manufacturer’s specifications!
•The fluid must be sediment-free.
•Wilo’s approval must be obtained for the use of other fluids.
•Mixtures with a glycol content >10% influence the flow calculation.
•When using water-glycol mixtures, the use of an S1 variant with a corresponding mech-
anical seal is generally recommended.
•For state-of-the-art systems, compatibility of the standard (mechanical) seal with the
fluid can be assumed under normal system conditions.
Special circumstances may require special seals, for example:

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Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04 17
–solids, oils or EPDM-attacking substances in the fluid,
–Air in the system, etc.
NOTICE
The flow value shown on the IR Stick’s display or that is output to the
building management system must not be used to control the pump.
This value is merely an indicator of general trends.
A flow value is not output on every pump type.
Always observe the safety data sheet for the fluid to be pumped!
5.3 Scope of delivery •Pump
•Installation and operating instructions
5.4 Accessories Accessories must be ordered separately:
IL-E:
•3mounting brackets with fixation material for installation on a base
BL-E:
•Supports for installation on a base or baseplate
•IR-Stick
•IF module PLR for connecting to PLR/interface converter
•IF module LON for connection to the LONWORKS network
•IF module BACnet
•IF module Modbus
•CAN IF module
•Wilo-Smart IF module
•DDG kit
For a detailed list, consult the catalogue and spare parts documentation.
NOTICE
IF module may only be plugged in when the pump is de-energised
(voltage-free).
6 Description of the pump
6.1 Design All the pumps described here are low-pressure centrifugal pumps in compact construction
design with a coupled motor. The mechanical seal is maintenance-free. The pumps can be
installed directly in a sufficiently anchored pipe as an inline pump or placed on a base.
IL-E version
Fig.3: Illustration of IL-E
The pump housing has an in-line design, i.e. the flanges on the suction and discharge sides
lie along a centre line. All pump housings are equipped with cast-on pump feet. Installation
on a base is recommended for units with a rated power of ≥5.5kW and above.
BL-E version
Fig.4: View Atmos GIGA-B
Spiral housing pump with dimensions in accordance with DINEN733.
All pump housings are equipped with cast-on pump feet. From motor power ≥5.5kW: Mo-
tors with cast or screwed-on feet.
Installation on a base is recommended for units with a rated power of ≥5.5kW and above.

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18 Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04
6.2 Electronic module
1 2 3 4 5
7 68
2
5
3
1864
7
11 ... 22 kW:
1.5 ... 7.5 kW:
Fig.5: Electronic module, overview
Depending on the differential pressure and the set control mode, the electronic module reg-
ulates the speed of the pump to a setpoint that can be adjusted within the permissible con-
trol range.
Continuous adaptation of the hydraulic output adapts to the system’s changing require-
ments. Changing requirements can be expected especially when thermostatic valves or mix-
ers are used.
The basic advantages of the electronic control are:
•Energy saving at the same time as reduced operating costs
•Reduced number of differential pressure valves required
•Reduction of flow noise
•Modification of the pump to changing operating requirements
1 Fixing points on cover
2 Operating button
3 Infrared window
4 Control terminals
5 Display
6 DIP switch
7 Power terminals (mains terminals)
8 Interface for IF module
6.3 Control modes
NOTICE
For information on setting the control mode and related parameters, see
section “Operation” and section “Setting the control mode”.
Available control modes are:
Constant differential pressure (Δp-c)
The control keeps the delivery head constant at the set differential pressure setpoint HS.
Control is independent of the volume flow and operates until the maximum characteristic
curve is reached.
Q
s
Hmax
H
Hs
Hmin
Fig.6: Control mode Δp-c
Q = Volume flow
H = Differential pressure (min./max.)
HS = Differential pressure setpoint
Variable differential pressure (Δp-v)
The electronics change the differential pressure setpoint to be maintained by the pump lin-
early between the delivery head HS and ½ HS. The differential pressure setpoint HS decreases
or increases with the volume flow.

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Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04 19
Q
H
H
Q
Hmax
Hs
½ Hs
Hmin
Fig.7: Control mode Δp-v
Q = Volume flow
H = Differential pressure (min./max.)
HS = Differential pressure setpoint
NOTICE
A differential pressure sensor is needed for the control modes that are be-
ing performed (Δp-c and Δp-v) which sends the actual value to the elec-
tronic module.
NOTICE
The pressure range of the differential pressure sensor must match the
pressure value in the electronic module (menu <4.1.1.0>).
Q
H
H
Q
nmin
nmax
n = const
max
Fig.8: Constant speed
Constant speed
The pump speed can be kept at a constant speed between nmin und nmax. “Constant speed”
mode deactivates all other control modes.
PID control
If other sensors are used or if the distance between the sensors and the pump is very large,
the standard control modes are not applicable. In these cases, the “PID-Control” function
(Proportional Integral Differential control) is available.
By selecting a good combination of individual control elements, the operator can ensure
fast-reacting, constant control without lasting setpoint deviations. The output signal of the
selected sensor can accept any intermediate value. The relevant actual value reached (sensor
signal) will be shown as a percentage on the status page of the menu (100% = maximum
measurement range of the sensor).
NOTICE
The displayed percent value only corresponds indirectly to the
current delivery head of the pump(s).
The maximum delivery head can even been reached at a sensor signal of
<100%.
6.4 Twin-head pump function/Y-pipe
application NOTICE
The properties described in this section are only available if the internal
MP interface (MP = Multi Pump) is used.
Fig.9: Example – differential pressure sensor
connection in y-pipe installation
The main pump controls both pumps.
In the event of a fault in one pump, the other pump runs according to the main pump’s con-
trol input. In the event of a total breakdown of the main pump, the partner pump runs at the
emergency operation speed. The emergency operation speed can be set in menu <5.6.2.0>
(see section “Operation during interruption of communication”).
The main pump’s display shows the status of the twin-head pump. The partner pump’s dis-
play shows “SL”.
In the example, the main pump is the left-hand pump in the direction of flow. Connect the
differential pressure sensor to this pump!
The measuring points of the differential pressure sensor must be located in the collector pipe
on the suction and discharge side of the twin-head pump system.

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20 Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoBloc-BL-E • Ed.01/2023-04
Fig.10: Insert IF module
Interface module (IF module)
An IF module (accessories) attached in the terminal room is required for communication
between pumps and building management systems.
Communication between the main pump and the partner pump is via an internal interface
(terminal: MP).
For pumps in Y-pipe applications where the electronic modules are connected to each other
via the internal interface, only the main pumps require an IF module.
Communication Main pump Partner pump
PLR / Interface converter IF module PLR No IF module necessary
LONWORKS network IF module LON No IF module necessary
BACnet BACnet IF module No IF module necessary
Modbus Modbus IF module No IF module necessary
CAN bus IF module CAN No IF module necessary
Table3: IF modules
NOTICE
The procedure and additional explanations on commissioning and config-
uring the IF module on the pump are described in the installation and op-
erating instructions for the IF module used.
6.4.1 Operating modes Main/standby operation
Only one pump ever runs at a time. Each of the two pumps provides the configured flow
rate. The other pump is available in case of malfunction or runs after pump cycling.
6.4.2 Behaviour in twin-head pump op-
eration Pump cycling
t
Δp
Pump 1 Pump 2
Fig.11: Pump cycling, schematic representa-
tion
With twin-head pump operation, pump cycling occurs periodically (the intervals can be set;
factory setting = 24 hours).
Pump cycling can be triggered:
•Internally, time-controlled (menu <5.1.3.2> + <5.1.3.3>)
•Externally (menu <5.1.3.2>) by a positive beam on the “AUX” contact
•Manual (menu <5.1.3.1>)
Manual or external pump cycling is possible 5seconds after the last pump cycling at the
earliest.
Activating external pump cycling simultaneously deactivates internal time-controlled pump
cycling.
Schematised description of pump cycling operation (see diagram):
•Pump 1 is running (black line)
•Pump 2 is switched on at minimum speed and soon afterwards reaches the setpoint (grey
line)
•Pump 1 is switched off
•Pump 2 continues to run until the next pump cycling
NOTICE
In constant speed mode, a slight increase in flow can be expected. Pump
cycling is dependent on the ramp time and generally lasts 2sec. In control
mode, there may be minor fluctuations in the delivery head. However,
pump1 adjusts itself to the changed conditions. Pump cycling is depend-
ent on the ramp time and generally lasts 4sec.