Wilo Wilo-CronoLine-IL-E User manual

Wilo-CronoLine-IL-E
Wilo-CronoTwin-DL-E
Wilo-CronoBloc-BL-E
Pioneering for You
2 140 044-Ed.01 / 2013-11-Wilo
de Einbau- und Betriebsanleitung
en Installation and operating instructions
fr Notice de montage et de mise en service
nl Inbouw- en bedieningsvoorschriften

Fig. 1: IF-Modul
5,5 - 7,5 kW: 11 - 22 kW:1,5 - 4 kW:
Fig. 2:
IF-modul
!
Entladeze it Kondensatoren5min!
Dis chargetimecapacito rs 5min!
Tempsdedechargeducondensate
ur 5min!
FISchutz
Groundfa ult
current
interru pto r
Protecti o n
contre lesmis es
ala masse
AUX
SSM SBM
Ext. off MP DDG
Gnd
10V/20mA
LH
In2 Gnd INn1 +24V
L1L1 L2 L3 PE PE
M25
M20
M16
M16
M12
L3 L2 L1
L1 L2 L3 PE
AUX
SSM SBM
Ext. off MP DDG
GND
10V/20mA
LH
IN2GND IN1 +24V
M16
M12
M20
M12
M25
1 x M40
1 x M20
1 x M16
2 x M12
5,5 - 7,5 kW: 11 - 22 kW:1,5 - 4 kW:

Fig. 3:
5,5 - 7,5 kW: 11 - 22 kW:1,5 - 4 kW:
Fig. 4:
208,0 [mA] 0 2,0 3,0
2010,44 5,6 6,4
104,0 [V] 0 1,0 1,5
105,22 2,8 3,2
[1/min]
0
nmax
nmin
Δpmax
Δpmin
[%]
off
0
100
[%]
off
0
100
[m]
0
[1/min]
0
nmax
nmin
Δpmax
Δpmin
[m]
0

Fig. 5a: IL-E / DL-E
+
-
3.1 1.14
3
3.33.1 1.14
3
1.11 1.121.131.14
1.1
1.311.32 1.33 1.11
1.12
1.14
10
1.3
211
12
5
1.41 10
1.11
1.12
1.14
1.4
1.11 1.121.211.14 10
1.2
94678
(5mm)
10
Fig. 5b: BL-E
3.13.21.14
3
1.11 1.121.131.14
1.1
1.311.32 1.33 1.11
1.12
1.14
10
1.3
211
12
5
1.41 10
1.11
1.12
1.14
1.4
1.11 1.121.211.14 10
1.243.5678

English
1 General ..................................................................................................................................................55
2 Safety ....................................................................................................................................................55
2.1 Indication of instructions in the operating instructions .................................................................................55
2.2 Personnel qualifications ......................................................................................................................................56
2.3 Danger in the event of non-observance of the safety instructions ..............................................................56
2.4 Safety consciousness on the job ........................................................................................................................56
2.5 Safety instructions for the operator .................................................................................................................56
2.6 Safety instructions for installation and maintenance work ...........................................................................56
2.7 Unauthorised modification and manufacture of spare parts ..........................................................................57
2.8 Improper use ........................................................................................................................................................57
3 Transport and interim storage ...........................................................................................................57
3.1 Shipping ................................................................................................................................................................57
3.2 Transport for installation/removal purposes ....................................................................................................57
4 Intended use .........................................................................................................................................58
5 Product information ............................................................................................................................59
5.1 Type key ................................................................................................................................................................59
5.2 Technical data .....................................................................................................................................................59
5.3 Scope of delivery ..................................................................................................................................................60
5.4 Accessories ...........................................................................................................................................................60
6 Description and function ....................................................................................................................60
6.1 Description of the product .................................................................................................................................60
6.2 Permissible forces and torques on the pump flanges (only BL-E pumps)......................................................62
6.3 Control modes ......................................................................................................................................................62
6.4 Dual pump function .............................................................................................................................................64
6.5 Other functions ....................................................................................................................................................67
7 Installation and electrical connection ...............................................................................................68
7.1 Installation ............................................................................................................................................................69
7.2 Electrical connection ...........................................................................................................................................70
8 Operation ..............................................................................................................................................75
8.1 Operating elements .............................................................................................................................................75
8.2 Display structure ..................................................................................................................................................76
8.3 Explanation of standard symbols .......................................................................................................................76
8.4 Symbols in graphics/instructions .......................................................................................................................76
8.5 Display modes ......................................................................................................................................................77
8.6 Operating instructions ........................................................................................................................................79
8.7 Menu elements reference ...................................................................................................................................83
9 Commissioning .....................................................................................................................................89
9.1 Filling and bleeding ..............................................................................................................................................89
9.2 Double pump installation/Y-pump installation ................................................................................................90
9.3 Setting the pump performance ..........................................................................................................................90
9.4 Setting the control mode ....................................................................................................................................91
10 Maintenance .........................................................................................................................................92
10.1 Air supply ..............................................................................................................................................................93
10.2 Maintenance work ...............................................................................................................................................93
11 Faults, causes and remedies ...............................................................................................................97
11.1 Mechanical faults .................................................................................................................................................97
11.2 Error table .............................................................................................................................................................98
11.3 Acknowledging errors .........................................................................................................................................99
12 Spare parts .........................................................................................................................................104
13 Disposal ..............................................................................................................................................105

English
Installation and operating instructions Wilo-CronoLine-IL-E, CronoTwin-DL-E, CronoBloc-BL-E 55
Installation and operating instructions
1 General
About this document The language of the original operating instructions is German. All
other languages of these instructions are translations of the original
operating instructions.
These installation and operating instructions are an integral part of
the product. They must be kept readily available at the place where
the product is installed. Strict adherence to these instructions is a
precondition for the proper use and correct operation of the product.
The installation and operating instructions correspond to the relevant
version of the product and the underlying safety regulations and
standards valid at the time of going to print.
EC declaration of conformity:
A copy of the EC declaration of conformity is a component of these
operating instructions.
If a technical modification is made on the designs named there with-
out our agreement or the declarations made in the installation and
operating instructions on the safety of the product/personnel are not
observed, this declaration loses its validity.
2Safety These operating instructions contain basic information which must
be adhered to during installation, operation and maintenance. For this
reason, these operating instructions must, without fail, be read by the
service technician and the responsible specialist/operator before
installation and commissioning.
It is not only the general safety instructions listed under the main
point “safety” that must be adhered to but also the special safety
instructions with danger symbols included under the following main
points.
2.1 Indication of instructions in the
operating instructions
Symbols General danger symbol
Danger from electrical voltage
NOTE
Signal words DANGER!
Acutely dangerous situation
Non-observance results in death or the most serious of injuries.
WARNING!
The user can suffer (serious) injuries. “Warning” implies that (seri-
ous) injury to persons is probable if this information is disregarded.
CAUTION!
There is a risk of damaging the product/unit. “Caution” implies that
damage to the product is likely if this information is disregarded.
NOTE:
Useful information on handling the product. It draws attention to
possible problems.

English
56 WILO SE 11/2013
Information applied directly to the product, such as:
• Arrows indicating the direction of rotation,
• Identification for fluid connections,
• Rating plates and
• Warning stickers,
must be strictly complied with and kept in a fully legible condition.
2.2 Personnel qualifications The installation, operating and maintenance personnel must have the
appropriate qualifications for this work. The area of accountability,
responsibility and personnel monitoring are to be ensured by the
operator. If the personnel are not in possession of the necessary
knowledge, they are to be trained and instructed. This can be accom-
plished if necessary by the manufacturer of the product at the request
of the operator.
2.3 Danger in the event of non-
observance of the safety
instructions
Non-observance of the safety instructions can result in risk of injury
to persons and damage to the product/unit as well as environmental
hazards. Non-observance of the safety instructions results in the loss
of any claims to damages.
In particular, lack of care may lead to problems such as:
• Danger to persons from electrical, mechanical and bacteriological
influences.
• Pollution of the environment due to leakage of hazardous materials
• Damage to property
• Failure of important product/unit functions
• Failure of required maintenance and repair procedures
2.4 Safety consciousness on the job The safety instructions included in these installation and operating
instructions, the existing national regulations on accident prevention
together with any internal working, operating and safety regulations
of the operator are to be complied with.
2.5 Safety instructions for the operator This appliance is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of expe-
rience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible
for their safety.
Children should be supervised to ensure that they do not play with the
appliance.
• If hot or cold components on the product/unit cause hazards, meas-
ures must be taken by the customer to prevent them from being
touched.
• Guards which prevent moving components (such as the coupling)
from being touched must not be removed whilst the product is in
operation.
• Leakages (e.g. from a shaft seal) of hazardous fluids (e.g. explosive,
toxic or hot) must be led away so that no danger to persons or to the
environment arises. National statutory provisions are to be observed.
• Danger from electrical current must be eliminated. Local directives or
general directives [e.g. IEC, VDE etc.] and local power supply compa-
nies must be adhered to.
2.6 Safety instructions for installation
and maintenance work
The operator must ensure that all installation and maintenance work is
carried out by authorised and qualified personnel, who are sufficiently
informed from their own detailed study of the operating instructions.
Work on the product/unit must only be carried out when at a stand-
still. It is mandatory that the procedure described in the installation
and operating instructions for shutting down the product/unit be
complied with.

English
Installation and operating instructions Wilo-CronoLine-IL-E, CronoTwin-DL-E, CronoBloc-BL-E 57
Immediately on conclusion of the work, all safety and protective
devices must be put back in position and/or recommissioned.
2.7 Unauthorised modification and
manufacture of spare parts
Unauthorised modification and manufacture of spare parts will put
the safety of the product/personnel at risk and invalidate the state-
ments on safety made by the manufacturer.
Modifications to the product are only permissible after consultation
with the manufacturer. Original spare parts and accessories author-
ised by the manufacturer ensure safety. The use of other parts can
nullify the liability from the results of the usage.
2.8 Improper use The operating safety of the supplied product is only guaranteed when
used properly in accordance with the section in the operating instruc-
tions titled “Intended use”. The limit values must on no account fall
under or exceed those specified in the catalogue/data sheet.
3 Transport and interim storage
3.1 Shipping The pump is delivered from the factory packaged in a cardboard box
or secured to a pallet and protected against dust and moisture.
Transport inspection On arrival, inspect the pump immediately for any transport damage. If
damage is found, the necessary procedure involving the forwarding
agent must be taken within the specified period.
Storage Before installation, the pump must be kept dry, frost-free and pro-
tected from mechanical damage.
CAUTION! Risk of damage due to incorrect packaging!
If the pump is transported again at a later time, it must be packaged
so that it cannot be damaged during transport.
• Use the original packaging for this, or select equivalent packaging.
3.2 Transport for installation/removal
purposes
WARNING! Risk of personal injury!
Improper transport can lead to personal injury.
• The pump must be transported using approved load-bearing
equipment (e.g. block and tackle, crane, etc.). This must be secured
to the pump flanges and, if necessary, to the external diameter of
the motor (protection against slipping is required!).
• To lift with a crane, the pump must be supported by suitable belts,
as shown. Place loops around the pump which tighten from the
pump's own weight.
• The transport eyes on the motor are only for guiding while bearing
the load (Fig. 6).
Fig.6: Transporting the pump

English
58 WILO SE 11/2013
• The transport eyes on the motor are only for transporting the
motor, and are not approved for transporting the complete pump
(Fig. 7).
WARNING! Risk of personal injury!
Setting up the pump without securing it can lead to personal injury.
• Do not place the pump unsecured on the pump base. The base with
the threaded holes is only used for attachment. When standing
freely, the pump might not be sufficiently stable.
WARNING! Risk of injury due to the weight of the pump!
The pump itself and the parts of pump can be extremely heavy.
Falling parts pose a risk of cuts, crush injuries, bruises or impacts,
which may lead to death.
• Always use suitable lifting equipment and secure parts against fall-
ing.
• Never stand underneath a suspended load.
• Make sure the pump is securely positioned and is stable during
storage and transport as well as prior to all installation and other
assembly work.
4 Intended use
Purpose Glanded pumps in the IL-E series (Inline), DL-E series (double) and BL-
E series (monobloc) are intended for use as circulation pumps in buil-
ding services.
Fields of application They may be used for:
• Hot water heating systems
• Cooling and cold water circulation systems
• Industrial circulation systems
• Heat carrier circuits
Restrictions The pumps are exclusively intended for installation and operation in
enclosed rooms. Typical installation locations are technical rooms
within the building with other domestic installations. No provision has
been made for direct installation of the device in rooms used for other
purposes (residential and work rooms). The following is not permit-
ted:
• Outdoor installation and operation outdoors
CAUTION! Risk of property damage!
Unpermitted substances in the fluid can destroy the pump. Abra-
sive solids (e.g. sand) increase pump wear.
Pumps without an Ex certificate are not suitable for use in poten-
tially explosive areas.
• The correct use of the pump/installation also includes following
these instructions.
• Any other use is considered to be incorrect use.
Fig. 7: Transporting the motor

English
Installation and operating instructions Wilo-CronoLine-IL-E, CronoTwin-DL-E, CronoBloc-BL-E 59
5 Product information
5.1 Type key The type key consists of the following elements:
5.2 Technical data
When ordering spare parts be sure to state all the information given
on the pump and motor type plates.
Example: IL-E 80/ 130-5,5/ 2 xx
DL-E 80/ 130-5,5/ 2 xx
BL-E 65/ 130-5,5/ 2 xx
IL
DL
BL
Flange-end pump as inline single pump
Flange-end pump as inline double pump
Flange-end pump as monobloc pump
-E With Electric module for electronic speed control
80 Nominal diameter DN of the flange connection
(for BL-E: pressure side) [mm]
130 Impeller diameter [mm]
5.5 Rated motor power P2[kW]
2 Number of poles, motor
xx Versions:
e.g. R1 – without differential pressure sensor
Property Value Remarks
Speed 750 - 2900 rpm; 380 - 1450 rpm
Nominal diameters DN IL-E/DL-E: 40, 50, 65, 80, 100, 125,
150, 200 mm
BL-E: 32, 40, 50, 65, 80, 100,
125 mm (pressure side)
Pipe connections Flanges PN 16 EN 1092-2
Permissible min./max. fluid temperature -20 °C to +140 °C Depending on fluid
Ambient temperature min./max. 0 °C to +40 °C Lower or higher ambient
temperature on request
Max. admissible operating pressure 16 bar (120 °C)
13 bar (140 °C)
Insulation class F
Protection class 55
Electromagnetic compatibility*)
Emitted interference in acc. with
Interference resistance in acc. with
EN 61800-3
EN 61800-3
Residential
Industrial
Sound pressure level < 83 dB(A) Depending on pump type
Approved fluids Heating water according to VDI 2035
Cooling/cold water
Water/glycol mixture up to 40 % vol.
Heat transfer oil
Other fluids on request
Standard version
Standard version
Standard version
Only for special version
Only for special version
Electrical connection 3~440 V ± 10 %, 50/60 Hz
3~400 V ± 10 %, 50/60 Hz
3~380 V -5 % + 10 %, 50/60 Hz
Supported network types:
TN, TT
Internal electric circuit PELV, galvanically isolated
Speed control Built-in frequency converter
Relative humidity < 90 %, non-condensing
*) Pumps with motor power between 11 kW and 22 kW can cause radio interference in residential spaces; should this be the case it may be necessary for the
operator to implement appropriate measures.

English
60 WILO SE 11/2013
Fluids If water/glycol mixtures are used (or fluids with a viscosity other than
that of pure water), an increase in power consumption of the pump is
to be taken into account. Only use mixtures with corrosion inhibitors.
The respective manufacturer's instructions are to be observed.
• The fluid must be sediment-free.
• Wilo's approval must be obtained for use of other media.
• Mixtures with a proportion of glycol of > 10 % influence the Δp-v
pump curve and the flow calculation.
NOTE
The flow value shown on the IR-Monitor/IR-Module (PDA) display or
output to the building management system must not be used to con-
trol the pump. This value is merely an indicator of general trends.
A flow value is not output on every type of pump.
NOTE
Always read and follow the material safety data sheet for the fluid
being pumped!
5.3 Scope of delivery • Pump IL-E/DL-E/BL-E
• Installation and operating instructions
5.4 Accessories Accessories must be ordered separately:
•IL-E/DL-E:
3 mounting brackets with fixation material for installation on a base
•BL-E:
4 mounting brackets with fixation material for installation on a base
for rated motor power of 5.5kW and above
• Blind flanges for double pump housing
• IR-Monitor
• IR-Module (PDA)
• IF-Module PLR for connecting to PLR/interface converter
• IF-Module LON for connection to the LONWORKS network
•BACnetIF-Module
• Modbus IF-Module
• CAN IF-Module
See catalogue for detailed list.
NOTE
IF-Module may only be plugged in when the pump is de-energised
(voltage-free).
6Descriptionandfunction
6.1 Description of the product The described pumps are single-stage low-pressure centrifugal
pumps in compact design with a coupled motor. The pumps can be
installed both directly as a pipe installation pump in a sufficiently
anchored pipe or placed on a foundation base.
The pump housing of the IL-E and the DL-E is configured in an inline
design, i.e. the flanges on the suction and pressure sides are located
in the same axis. All pump housings are provided with a pump base.
Installation on a foundation base is recommended.

English
Installation and operating instructions Wilo-CronoLine-IL-E, CronoTwin-DL-E, CronoBloc-BL-E 61
NOTE
Blind flanges, which allow the motor impeller unit to be replaced even
in double pump housing, are available for all pump types/housing
sizes in the DL-E series (see Section 5.4 “Accessories” on page 60). A
drive can therefore remain in operation while replacing the motor
impeller unit.
The pump housing in the BL-E series is a spiral pump housing with
flange and housing dimensions in accordance with DIN EN 733. A
pedestal screwed onto the pump is available for motor powers up to
4 kW. For motor powers of 5.5 kW and above, the pumps in the BL-E
series are equipped with feet that are screwed onto the motor (motor
type B35).
Electronic module The electronic module controls the speed of the pump to a setpoint
that can be adjusted within the control range.
The hydraulic capacity is controlled by differential pressure and the
set control mode.
In all control modes, however, the pump adapts itself continuously to
the changing power requirements of the system, which is the case
especially when thermostatic valves or mixers are used.
The basic advantages of the electronic control are:
• Energy saving at the same time as reduced operating costs
• Fewer differential pressure valves required
• Reduction of flow noise
• Adaptation of the pump to changing operating requirements
Legend (Fig. 8):
1 Attachment point, cover
2Theredbutton
3 Infrared window
4Terminalstrip
5Display
6DIPswitch
7 Mains terminals
8 Interface for IF-Module
Fig. 8: Electronic module
123 4 5
768
2
5
3
1864
7
1,5 - 7,5 kW:
11 - 22 kW

English
62 WILO SE 11/2013
6.2 Permissible forces and torques on
the pump flanges (only BL-E pumps)
The following condition must be fulfilled:
(FV), (FH) and (Mt) are the totals of the absolute amounts of the
corresponding loads acting on the connecting pieces. For these
totals, neither the direction of the loads nor their distribution is taken
into consideration.
6.3 Control modes The selectable control modes are:
Δp-c:
The electronics keep the differential pressure created by the pump
above the permitted feed flow range constantly at the pre-selected
differential pressure setpoint Hsup to the maximum pump curve
(Fig. 10).
Q = Volume flow
H = Differential pressure (min./max.)
HS= Differential pressure setpoint
NOTE
For further information about setting the control mode and the asso-
ciated parameters, see Section 8 “Operation” on page 75 and Section
9.4 “Setting the control mode” on page 91.
Pump type
BL-E
Suction flange DN [mm] Pressure flange DN [mm] Kraft FVmax
[kN]
Force FHmax
[kN]
Torques 
Mtmax [kNm]
40/... 65 40 2,4 1,7 0,55
2,4 1,7 0,52
2,4 1,7 0,50
2,5 1,8 0,62
50/... 65 50 2,4 1,7 0,55
2,4 1,7 0,52
2,4 1,7 0,50
2,5 1,8 0,62
65/... 80 65 2,6 1,8 0,7
2,6 1,8 0,7
2,6 1,8 0,7
2,6 1,8 0,7
2,6 1,8 0,7
80/... 100 80 3,3 2,4 1,1
3,3 2,4 1,1
3,3 2,4 1,1
3,3 2,4 1,1
Fig. 9: Forces affecting the connecting pie-
ces
Fig. 10: Δp-c control
Q
s
H
max
H
H
s
H
min

English
Installation and operating instructions Wilo-CronoLine-IL-E, CronoTwin-DL-E, CronoBloc-BL-E 63
Δp-v:
The electronics change the differential pressure setpoint to be main-
tained by the pump linearly between the delivery head Hsand ½ Hs.
The differential pressure setpoint Hsdecreases/increases with the
volume flow (Fig. 11).
NOTE
Δp-v control on monobloc pumps can result in differing amounts of
deviation in relation to the optimum linear progression between the
delivery head Hs and ½ Hs. The deviation depends on the respective
pump type and on the positioning of the sensors in the different appli-
cations.
Q = Volume flow
H = Differential pressure (min./max.)
HS= Differential pressure setpoint
NOTE
For further information about setting the control mode and the asso-
ciated parameters, see Section 8 “Operation” on page 75 and Section
9.4 “Setting the control mode” on page 91.
Manual control mode:
The speed of the pump can be kept to a constant speed between nmin
and nmax (Fig. 12). “Manual control” mode deactivates all other con-
trol modes.
PID controller
If the aforementioned standard control modes cannot be used – e.g.if
other sensors are to be used or the distance to the pump is very long
– then the PID control (Proportional-Integral-Differential control) is
available.
By selecting a good combination of individual control portions, the
operator can ensure fast reacting, constant control without lasting
setpoint deviations.
The output signal of the selected sensor can adopt any intermediate
value. The respective actual value reached (sensor signal) will be
shown as a percent (100 % = maximum measurement range of the
sensor) on the status page of the menu.
NOTE
The displayed percent value only corresponds indirectly to the current
delivery head of the pump(s). It can be, for example, that the maxi-
mum delivery head has already been reached at a sensor signal
<100%.
For further information about setting the control mode and the asso-
ciated parameters, see Section 8 “Operation” on page 75 and Section
9.4 “Setting the control mode” on page 91.
Fig. 11: Δp-v control
Q
H
H
Q
Hmax
Hs
½ Hs
Hmin
Fig. 12: Manual control mode
Q
H
H
Q
nmin
nmax
s
Hs

English
64 WILO SE 11/2013
6.4 Dual pump function NOTE
The properties described below are only available if the internal MP
interface (MP = Multi Pump) is used.
• Both pumps are controlled by the master pump.
If one of the pumps malfunctions, the other will run according to the
master's control settings. In case of a total failure of the master, the
slave pump operates at emergency operation speed.
The emergency operation speed can be set in menu <5.6.2.0> (see
Section 6.4.3 “Operation during interruption of communication” on
page 66).
• The master's display will show the status of the double pump. On the
slave display, 'SL' will appear.
• The master pump is the pump on the left by direction of flow. Connect
the differential pressure sensor to this pump.
The measuring points of the differential pressure sensor of the master
pump must be on the suction and pressure side of the double-pump
system in the corresponding collector pipe (Fig. 12).
InterFace module (IF-Module) For communication between pumps and the building management
system, one IF-Module (accessories) is required per pump. This is
plugged into the terminal space (Fig. 1).
• The master-slave communication uses an internal interface (terminal:
MP, Fig. 21).
• In double pumps, only the master pump has to be equipped with an
IF-Module.
NOTE
The procedure and further information for commissioning and confi-
guring the IF-Module on the pump canbe found in the installation and
operating instructions of the IF-Module used.
6.4.1 Operating modes
Main/readiness operation Each of the two pumps provides the configuration flow rate. The
other pump is available in case of malfunction or runs after pump
cycling. Only one pump runs at a time (see Fig. 10, 11 and 12).
Parallel operation In the partial load range, the hydraulic output is provided at the
beginning by one pump. The second pump will be switched on when
it is most effective to do this, i.e. when the total power consumption
P1of both pumps in the partial load range is less than the power con-
sumption P1of one pump. Both pumps will then be simultaneously
adjusted upwards to the maximum speed. (Fig. 14 and 15).
In manual control mode, both pumps always run synchronously.
Fig. 13: Example, DDG connection
Communication Master pump Slave 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 CAN IF-Module No IF-Module
necessary
Fig. 14: Δp-c control (parallel operation)
Q
s
H
max
H
H
s
H
min

English
Installation and operating instructions Wilo-CronoLine-IL-E, CronoTwin-DL-E, CronoBloc-BL-E 65
6.4.2 Behaviour in dual pump operation
Pump cycling In dual pump operation, pump cycling is done every 24 hours (config-
urable).
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 edge at the “AUX” contact
(See Fig. 21),
• or Manually, (menu <5.1.3.1>).
Manual or external pump cycling is possible 5 seconds after the last
pump cycling, at the earliest.
Activation of external pump cycling simultaneously deactivates
internal time-controlled pump cycling.
Behaviour of the inputs and outputs Actual value input IN1 setpoint input IN2
• At the master: acts on the whole unit.
“External off”
• Set at the master (menu <5.1.7.0 >): depending on the setting in
menu <5.1.7.0>, acts only on the master or on the master and the
slave
• Set at the slave: acts only on the slave
Fault and run signals ESM/SSM:
• A collective fault signal (SSM) can be connected to the master for a
central control centre.
• In this case, the contact may only be made to the master.
• The display is for the whole unit.
• This signal can be programmed on the master (or using the IR-Moni-
tor/PDA) as an individual fault signal (ESM) or a collective fault signal
(SSM) in menu <5.1.5.0>.
• The contact must be made to each pump for individual fault signals.
EBM/SBM:
• A collective run signal (SBM) can be connected to the master for
a central control centre.
• In this case, the contact may only be made to the master.
• The display is for the whole unit.
• This signal can be programmed on the IR-Monitor (or using the PDA)
as an individual fault signal (ESM) or collective fault signal (SSM)
(menu <5.1.6.0>).
• The functions – “Readiness”, “Operation”, “Mains on” – from
EBM/SBM can be set at <5.7.6.0> on the master.
Fig. 15: Δp-v control (parallel mode)
Q
H
H
Q
Hmax
Hs
Hmin

English
66 WILO SE 11/2013
NOTE
“Readiness” means: The pump could run, there is no fault.
“Operation” means: Motor turning.
“Mains on” means: Mains voltage is present.
• The contact must be made to each pump for individual run signals.
Operating possibilities at the slave
pump
No further settings can be made on the slave except for “External off”
and “Block/release pump”.
NOTE
If an individual motor is switched voltage-free in a double pump, the
integrated dual pump management is deactivated.
6.4.3 Operation during interruption of
communication
When communication is interrupted between two pump heads in dual
pump operation, both displays show the error code 'E052'. Both
pumps behave as single pumps for as long as the interruption lasts.
• Both modules report the malfunction via the ESM/SSM contact.
• The slave pump runs in emergency operation (manual control) mode
according to the emergency operation speed previously set on the
master (see menu items <5.6.2.0>). The factory setting for the emer-
gency operation speed is n = 1850/925 rpm for 2/4 pole.
• After acknowledging the fault display, the status display will be
shown on both pump displays for the duration of the communication
interruption. This resets the ESM/SSM contact at the same time.
• The slave pump display will show the symbol ( - Pump running in
emergency operation).
• The (former) master pump continues to have control. The (former)
slave pump follows the emergency operation settings. Emergency
mode can only be exited by triggering the factory setting, eliminating
the interruption in communication or by switching the mains off/on.
NOTE
During communication interruptions, the (former) slave pump cannot
run in auto control, since the differential pressure sensor has switched
to the master. No changes can be made to the module when the slave
is running in emergency mode.
• After the end of the communication interruption, the pumps will
resume regular dual pump operation as before the malfunction.
Slave pump behaviour Slave discontinues emergency operation:
• Factory settings restored
During a communication interruption on the (former) slave, if emer-
gency operation is discontinued because the factory settings have
been restored, the (former) slave will start up with the factory settings
of a single pump. It will then run in Δp-c mode at about half the max-
imum delivery head.
NOTE
In the absence of a sensor signal, the (former) slave will run at maxi-
mum speed. To prevent this, the (former) master's differential pres-
sure signal can be looped through. When the double pump is
operating normally, it is not affected by sensor signals pending on the
slave.
• Mains Off, Mains On
During a communication interruption on the (former) slave, if emer-
gency operation is discontinued due to mains off, mains on, the
(former) slave will start up with the latest emergency operation set-
tings received from the master.(for example, manual control mode at
a specific speed or off).

English
Installation and operating instructions Wilo-CronoLine-IL-E, CronoTwin-DL-E, CronoBloc-BL-E 67
Master pump behaviour Master discontinues emergency operation:
• Factory settings restored
During a communication interruption on the (former) master, if the
factory settings are restored, it will start up with the factory settings
of a single pump. It will then run in Δp-c mode at approximately half
the maximum delivery head.
• Mains Off, Mains On
During a communication interruption on the (former) master, if emer-
gency operation is discontinued due to mains off, mains on, the
(former) master will start up with the latest settings it has from the
double pump configuration.
6.5 Other functions
Disabling or enabling a pump A particular pump can generally be enabled or disabled in terms of
operation in menu <5.1.4.0>. A disabled pump cannot be used in
operation until the disabling has been manually lifted.
The setting can be made at each pump directly or over the infrared
interface.
Pump kick A pump kick is performed for 2 minutes after a period of 24 h has
elapsed, after a pump or a pump head has been at a standstill. The
reason for the standstill is not important (Manual off, Ext. off, Fault,
Adjustment, Emergency operation, BMS setting). This procedure is
repeated until the pump is switched back on via a control mechanism.
The “pump kick” function cannot be disabled via the menu or any
other interface. As soon as the pump is switched on via the control
system, the countdown to the next pump kick is interrupted.
The duration of a pump kickis 5 seconds. The motor turns at minimum
speed during this period. If both pump heads of a double pump
are switched off, e.g. by Ext. off, then both run for the period of
5 seconds. The pump kick also takes place in “Main/standby opera-
tion“ operating mode if the pump cycling takes more than 24 h.
NOTE
A pump kick is also attempted even in case of a fault.
The remaining operating time until the next pump kick can be read off
in menu <4.2.4.0>. This menu is only available when the motor is
stopped. The number of pump kicks can be read off in menu
<4.2.6.0>.
All faults, with the exception of warnings, that occur during the pump
kick switch the motor off. The corresponding fault code is shown on
the display.
Overload protection The pumps are equipped with an electronic overload protection func-
tion which switches off the pump in the event of an overload.
For data storage, the modules are equipped with a non-fading mem-
ory. The data is retained no matter how longer the module is discon-
nected from the power supply. When the power supply is re-
established, the pump continues to run with the values set prior to
disconnection from the power supply.
Behaviour after being switched on The pump operates with its factory settings in initial commissioning.
• The service menu deals with the setting and converting of individual
pumps; see Section 8 “Operation” on page 75.
• To correct faults, also see Section 11 “Faults, causes and remedies” on
page 97.
CAUTION! Risk of property damage!
Modifying the settings for the differential pressure sensor can lead
to malfunctions. The factory settings are configured for the sup-
plied Wilo differential pressure sensor.

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68 WILO SE 11/2013
• Default value:
input In = 0-10 volts,
pressure value correction = ON
• When using the supplied Wilo differential pressure sensor, these
settings must not be changed!
Modifications are only needed if another differential pressure sen-
sor is used.
Switching frequency At high ambient temperatures, the thermal load on the module can be
reduced by lowering the switching frequency (menu <4.1.2.0>).
NOTE
The switching frequency can be changed via the menu, the CAN bus
or the IR-PDA.
Lower switching frequencies result in increased noise levels.
Variants If menu <5.7.2.0> “Pressure value correction” is not available on the
display for a pump, this is a variant of the pump in which the following
functions are unavailable:
• Pressure value correction (menu <5.7.2.0>)
• Flow rate trend display
7 Installation and electrical
connection
Safety DANGER! Danger of death!
Incorrect installation and improper electrical connections can
result in a risk of fatal injury.
• Have the electrical connections established by approved electri-
cians only, in compliance with the applicable regulations.
• Accident prevention regulations must be observed!
DANGER! Danger of death!
Failure to install safety devices on the module cover or near the
coupling can cause electrical shock or contact with rotating parts,
potentially resulting in life-threatening injuries.
• Before commissioning, all safety devices such as module covers or
coupling covers that were removed must be reinstalled.
CAUTION! Risk of property damage!
Risk of property damage if the module is not installed.
• Normal operation of the pump is only permitted with the module
installed.
• The pump is not allowed to be connected or operated without the
module installed.
CAUTION! Risk of property damage!
Danger of damage due to incorrect handling.
• Have the pump installed by qualified personnel only.
CAUTION! Damage to the pump by overheating!
The pump must not be allowed to operate dry for more than 1
minute. Dry running causes a build-up of energy in the pump,
which can damage the shaft, impeller, and mechanical seal.
• Make sure that the volume flow does not go below the minimum
value Qmin.
Calculation of Qmin:
Qmin = 10% x Qmax pumpxActual speed
max. speed

English
Installation and operating instructions Wilo-CronoLine-IL-E, CronoTwin-DL-E, CronoBloc-BL-E 69
7.1 Installation
Preparation • The pump should only be installed after completion of all welding and
soldering work and, if necessary, flushing of the pipe system. Dirt can
cause pump failure.
• The pumps must be protected from the weather and installed in a
frost/dust-free, well-ventilated atmosphere which is not potentially
explosive. The pump must not be installed outdoors.
• Install the pump in a place that is easy to access so that subsequent
inspections, maintenance (e.g. mechanical seal) or replacement is
easily possible. The air access to the dissipator of the electronic mod-
ule may not be limited.
Positioning/alignment • A hook or a lug with sufficient load-bearing capacity must be installed
vertically over the pump (total weight of the pump: see catalogue/
data sheet), to which the pump lifting gear or similar equipment can
be attached during maintenance or repair of the pump.
CAUTION! Risk of property damage!
Danger of damage due to incorrect handling.
• Only use lifting eyes on the motor for carrying the weight of the
motor and not for carrying the entire pump (Fig. 16).
• The pump is only to be lifted with approved load-bearing equip-
ment.
• Minimum axial distance between a wall and the fan cover of the
motor: Free dismantling dimension of at least 200 mm + diameter of
the fan cover.
NOTE
Shut-off devices shall be installed in front of and behind the pump in
all cases, in order to avoid having to drain the entire system when
checking or renewing the pump.
A non-return valve shall be installed on the pressure side of each pump.
NOTE
A settling section must be provided before and after the pump, in the
form of a straight pipe. The length of this settling section should be at
least 5 x DN of the pump flange (Fig. 17). This measure serves to avoid
flow cavitation.
• The pipes and pump must be free of mechanical stress when installed.
The pipes must be fastened in such a way that the pump does not
bear the weight of the pipes.
• The direction of flow must correspond to the direction arrow on the
pump housing flange.
• The bleed valve (Fig. 18, Item 1) must always face upwards.
• All installation positions except for “motor facing down” are allowed.
• The installation position with horizontal motor shaft is only permitted
up to a motor power of 15 kW. A motor support is not necessary.
• Only the installation position with vertical motor shaft is intended for
a motor power >15 kW.
NOTE
BL-E series monobloc pumps are to be mounted on a sufficiently
strong base or mounting brackets.
• The electronic module must not face downwards. If required, the
motor can be turned after loosening the hexagon head bolts.
NOTE
After loosening the hexagon head bolts, the differential pressure sen-
sor is attached to the pressure measuring lines only. When turning the
motor housing, make sure that the pressure measuring lines are not
bent or kinked. Furthermore, while rotating the motor housing, it must
be ensured that the housing O-ring seal does not become damaged.
Fig. 16: Transporting the motor
Fig. 17: Settling section before and after
the pump
r
5 x DN
d s
r ⬇2,5 · (d · 2s)
Fig. 18: Bleed valve
1