Wilo Wilo-Para Series User manual

4 530 831-Ed.01 / 2018-02
Wilo-Para
Pioneering for You
de Einbau- und Betriebsanleitung
en Installation and operating instructions
fr Notice de montage et de mise en service

Fig. 1:
12
Para.../iPWM
Para.../LIN
11
8
1
2
3
4
58
9
10
7
Para.../SC
6

Fig. 2:
Fig. 3:
a
b
Fig. 4:
1
2

30 Wilo SE 02/2018
en
1General
About these
instructions These installation and operating instructions are an
integral part of the product. Read these instructions
before commencing work and keep them in an accessi-
ble place at all times.
Strict adherence to these instructions is a requirement
for intended use and correctly operating the product. All
specifications and markings on the product must be
observed.
The language of the original operating instructions is
German. All other languages of these instructions are
translations of the original operating instructions.
2Safety
This section contains basic information which must be
adhered to during installation, operation and mainte-
nance. Additionally, the instructions and safety instruc-
tions in the other sections must be followed.
Failure to follow the installation and operating instruc-
tions will result in the risk of injury to persons and dam-
age to the environment and the product. This will result
in the loss of any claims for damages.
Failure to follow the instructions will, for example, result
in the following risks:
• Injury to persons from electrical, mechanical and bac-
teriological factors as well as electromagnetic fields
• Environmental damage from leakage of hazardous
substances
• Property damage
• Failure of important functions of the product
Identification of
safety instructions
These installation and operating instructions set out
safety instructions for preventing personal injury and
damage to property, which are displayed in different
ways:
• Safety instructions relating to personal injury start
with a signal word and are preceded by a corre-
sponding symbol.

Installation and operating instructions Wilo-Para 31
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• Safety instructions relating to property damage start
with a signal word and are displayed
without a symbol.
Signal words DANGER!
Failure to observe safety instructions will result in seri-
ous injury or death!
WARNING!
Failure to follow instructions can lead to (serious) injury!
CAUTION!
Failure to follow instructions can lead to property dam-
age and possible total loss.
NOTICE
Useful information on handling the product
Symbols These instructions use the following symbols:
Personnel
qualifications
Personnel must:
• Be instructed about locally applicable regulations
governing accident prevention.
• Have read and understood the installation and oper-
ating instructions.
Personnel must have the following qualifications.
• Electrical work must be carried out by an authorised
electrician (in accordance with EN 50110-1).
Danger due to electrical voltage
General danger symbol
Warning of hot surfaces/fluids
Warning of magnetic fields
Notices

32 Wilo SE 02/2018
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• 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.
Definition of “qualified electrician”
A qualified electrician is a person with appropriate techni -
cal training, knowledge and experience who can identify
and prevent electrical hazards.
Electrical work • Electrical work must be performed by a qualified
electrician.
• Nationally applicable guidelines, standards and regu-
lations as well as specifications issued by the local
energy supply companies for connection to the local
power supply system must be observed.
• Before commencing work, disconnect the product
from the mains and safeguard it from being switched
on again.
• The connection must be protected by means of a
residual-current device (RCD).
• The product must be earthed.
• Have defective cables replaced immediately by a
qualified electrician.
• Never open the control module and never remove
operating elements.
Operator
responsibilities • Have all work carried out by qualified personnel only.
• Ensure on-site guard against hot components and
electrical hazards.
• Have defective gaskets and connection pipes
replaced.
This device can be used by children from 8 years of age as
well as by people with reduced physical, sensory or mental
capacities or lack of experience and knowledge if they are
supervised or instructed in the safe use of the device and
they understand the dangers that can occur. Children are
not allowed to play with the device. Cleaning and user
maintenance must not be carried out by children without
supervision.

Installation and operating instructions Wilo-Para 33
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3 Product description and function
Overview Wilo-Para (Fig. 1)
1 Pump housing with screwed connections
2 Glandless motor
3 Condensate drain openings
(4x around circumference)
4Housing screws
5 Control module
6 Rating plate
7 Operating button for pump adjustment
8 Run signal/fault signal LED
9 Display of selected control mode
10 Display of selected characteristic curve (I, II, III)
11 PWM or LIN signal cable connection
12 Mains connection: 3-pin plug connection
Function High-efficiency circulator for hot-water heating sys-
tems with integrated differential pressure control. Con-
trol mode and delivery head (differential pressure) are
adjustable. The differential pressure is controlled via the
pump speed.
Type key
Example: Wilo-Para 15-130/7-50/SC-12/I
Para High-efficiency circulator
15 15 = screwed connection DN 15 (Rp ½)
DN 25 (Rp 1), DN 30 (Rp 1¼)
130 Port-to-port length: 130 mm or 180 mm
7 7 = maximum delivery head in m at Q = 0 m³/h
50 50 = max. power consumption in watts
SC SC = Self-Control
iPWM1 = external control via iPWM1 signal
iPWM2 = external control via iPWM2 signal
12 Position of the control module at 12 o’clock
I Individual packaging

34 Wilo SE 02/2018
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Technical data
Indicator
lights (LEDs)
•Signal display
• LED is lit up in green in normal operation
• LED lights up/flashes in case of a fault
(see chapter 10.1)
• Display of selected control mode
Δp-v, Δp-c and constant speed
• Display of selected pump curve (I, II, III) within the
control mode
• LED indicator combinations during the pump venting
function, manual restart and key lock
Connection voltage 1 ~ 230 V +10 %/-15 %, 50/60 Hz
Protection class IPX4D
Energy efficiency index EEI See rating plate (6)
Fluid temperatures at
max. ambient temperature +40 °C -20 °C to +95 °C (Heating/GT) -10 °C to +110 °C (ST)
Ambient temperature +25 °C 0 °C to +70 °C
Max. operating pressure 10 bar (1000 kPa)
Min. inlet pressure at +95 °C/+110 °C 0.5 bar / 1.0 bar (50 kPa / 100 kPa)

Installation and operating instructions Wilo-Para 35
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Operating button
Press
•Select control mode
• Select pump curve (I, II, III) within the control mode
Press and hold
• Activate the pump venting function
(press for 3 seconds)
• Activate manual restart (press for 5 seconds)
• Lock/unlock button (press for 8 seconds)
3.1 Control modes and functions
Variable
differential
pressure
Δp-v (I, II, III)
Recommended for two-pipe heating systems with radi-
ators to reduce the flow noise at thermostatic valves.
The pump reduces the delivery head to half in the case of
decreasing volume flow in the pipe network.
Electrical energy saving by adjusting the delivery head to
the volume flow requirement and lower flow rates.
There are three pre-defined pump curves (I, II, III) to
choose from.
Constant
differential
pressure
Δp-c (I, II, III)
Recommended for underfloor heating for large-sized
pipes or all applications without a variable pipe network
curve (e.g. storage charge pumps), as well as single-pipe
heating systems with radiators.
The control keeps the set delivery head constant irre-
spective of the pumped volume flow.
There are three pre-defined pump curves (I, II, III) to
choose from.
II
III
I
H/m
Q/m³/h
III
I
II
H/m
Q/m³/h

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Constant
speed (I, II, III) Recommended for systems with fixed system resistance requiring a constant volume flow.
The pump runs in three prescribed fixed speed
stages (I, II, III).
External control
via iPWM signal The required setpoint/actual value comparison for con- trol is performed by an external controller.
A PWM signal (pulse-width modulation) is fed as a cor-
recting variable to the pump.
The PWM signal generator gives the pump a periodic
sequence of impulses (the duty cycle) in accordance
with DIN IEC 60469-1.
iPWM 1 mode (heating application):
In iPWM 1 mode, the pump speed is controlled according
to the PWM input signal.
Behaviour in the event of a cable break:
If the signal cable is disconnected from the pump,
e.g. due to a cable break, the pump accelerates to maxi-
mum speed.
PWM signal input [%]
< 5: Pump runs at maximum speed
5-85: The speed of the pump decreases linearly
from nmax to nmin
85-93: Pump runs at minimum speed (operation)
85-88: Pump runs at minimum speed (starting)
93-100: Pump stops (standby)
I
III
II
H/m
Q/m³/h
NOTICE
Factory setting:
Constant speed, pump curve III
55 (45)%
45 (55)%
5 (95)%
65 (35)%
35 (65)%
75 (25)%
85 (15)%
15 (85)%
25 (75)%
H/m
Q/m³/h
% PWM 1 (% PWM 2)
3:0
max
n
¹/min
min
0 5 85 88 93 100 PWM
%

Installation and operating instructions Wilo-Para 37
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iPWM 2 mode:
In iPWM 2 mode, the pump speed is controlled according
to the PWM input signal.
Behaviour in the event of a cable break:
If the signal cable is disconnected from the pump, e.g.
due to a cable break, the pump stops.
PWM signal input [%]
0-7: Pump stops (standby)
7-15: Pump runs at minimum speed (operation)
12-15: Pump runs at minimum speed (starting)
15-95: The speed of the pump increases linearly
from nmin to nmax
> 95: Pump runs at maximum speed
Venting The pump venting function is activated by pressing and
holding the operating button (for 3 seconds) and auto-
matically vents the pump.
However, this function does not vent the heating sys-
tem.
Manual restart A manual restart is initiated by pressing and holding the
operating button (for 5 seconds) and unblocks the pump
as required (e.g. after a long idle time in the summer).
Lock/unlock the
button The key lock is activated by pressing and holding the operating button (for 8 seconds) and locks the pump’s
current settings. It protects against undesired or unau-
thorised adjustment of the pump.
Activating
factory setting The factory setting is activated by pressing and holding the operating button whilst switching off the pump.
When the pump is switched on again, the pump runs
using the factory settings (delivery condition).
max
min
0 7 12 15 95 100 PWM
%
n
¹/min

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4 Intended use
High-efficiency circulators in the Wilo-Para series are
exclusively intended for circulating fluids in hot-water
heating systems and similar systems with constantly
changing volume flows.
Permitted fluids:
• Heating water according to VDI 2035
(CH: SWKI BT 102-01).
• Water-glycol mixtures* with a maximum of 50% glycol.
* Glycol has a higher viscosity than water. If admixtures
of glycol are used, the pumping data of the pump must
be corrected to match the mixing ratio.
Intended use includes observing these instructions and
the specifications and markings on the pump.
Misuse Any use beyond the intended use is considered misuse
and will void any warranty claims.
NOTICE
Only introduce ready-to-use mixtures to the
system. The pump must not be used to mix fluid
in the system.
WARNING!
Danger of injury or material damage from improper
use!
• Never use non-specified fluids.
• 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 only.
• Never operate with phase angle control.

Installation and operating instructions Wilo-Para 39
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5 Transportation and storage
Scope of delivery • High-efficiency circulator
• Installation and operating instructions
Accessories Accessories must be ordered separately. For a detailed
list and description, consult the catalogue.
The following accessories are available:
• Mains connection cable
• iPWM/LIN signal cable
• Thermal insulation shell
• Cooling shell
Transport
inspection Immediately check for transportation damage and com- pleteness upon delivery, and lodge any complaints
immediately.
Transport and
storage conditions Protect against moisture, frost and mechanical loads.
Permissible temperature range: -40 °C to +85 °C
(for max. 3 months)
6 Installation and electrical connection
6.1 Installation
May only be installed by qualified technicians.
WARNING!
Risk of burns from hot surfaces!
Pump housing (1) and glandless motor (2) may become
hot and cause burns if touched.
• During operation, only touch the control module (5).
• Allow the pump to cool down before commencing
any work.

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Preparation Installation within a building:
• Install the pump in a dry, well-ventilated, frost-free
room.
Installation outside a building (outdoor installation):
• Install the pump in a chamber with cover or in a cabi-
net/housing as weather protection.
• Avoid exposure of the pump to direct sunlight.
• Protect the pump against rain.
• Keep the motor and electronics continually ventilated
to avoid overheating.
• The permitted fluid temperatures and ambient tem-
peratures should not be exceeded or undershot.
• Choose an installation point that is as easily accessible
as possible.
• Observe the pump’s permitted installation
position (Fig. 2).
• Install shut-off devices upstream and downstream of
the pump to facilitate pump replacement.
WARNING!
Risk of scalding from hot fluids!
Hot fluids can cause scalding. Before installing or
removing the pump, or loosening the housing
screws (4), note the following:
• Allow the heating system to cool down completely.
• Close shut-off devices or drain the heating system.
CAUTION!
An incorrect installation position may damage the
pump.
• Select the installation point in line with the permis-
sible installation position (Fig. 2).
• The motor must always be installed horizontally.
• The electrical connection must never face upwards.

Installation and operating instructions Wilo-Para 41
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• Align the upper shut-off device laterally.
• When installing in the feed of open systems, the
safety supply must branch off upstream of the
pump (EN 12828).
• Complete all welding and brazing work.
• Flush the pipe system.
• Do not use the pump to flush the pipe system.
Installing the pump Observe the following points when installing the pump:
• Note the direction arrow on the pump housing (1).
• Install glandless motor (2) horizontally, without
mechanical tension.
• Place gaskets in the screwed connections.
• Screw on threaded pipe unions.
• Use an open-end wrench to secure the pump against
twisting and screw tightly to piping.
• Re-mount the thermal insulation shell if required.
CAUTION!
Leaking water may damage the control module.
• Align the upper shut-off device so that leaking
water cannot drip onto the control module (5).
• If the control module is sprayed with liquid, the sur-
face must be dried off.
1
2
3
CAUTION!
Insufficient heat dissipation and condensation water
may damage the control module and the glandless
motor.
• Do not thermally insulate the glandless motor (2).
• Ensure all condensate drain openings (3) are kept
free.

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6.2 Electrical connection
The electrical connection may only be carried out by a
qualified electrician.
WARNING!
Risk of fatal injury from magnetic field!
Risk of fatal injury for people with medical implants due
to permanent magnets installed in the pump.
• The motor must never be removed.
DANGER!
Risk of fatal injury from electrical voltage!
Immediate risk of fatal injury if live components are
touched.
• Before commencing work, switch off the power sup-
ply and secure it from being switched on again.
• Never open the control module (5) and never remove
operating elements.
CAUTION!
Pulsed mains voltage can cause damage to electronic
components.
• Never operate the pump with phase angle control.
• For applications where it is not clear whether the
pump is operated with pulsed voltage, get the
control/system manufacturer to confirm that the
pump is operated with sinusoidal AC voltage.
• Switching the pump on/off via triacs/solid-state
relays must be examined on a case-by-case basis.

Installation and operating instructions Wilo-Para 43
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Preparation • The current type and voltage must correspond to the
specifications on the rating plate (6).
• Maximum back-up fuse: 10 A, slow-blow.
• Only operate the pump with sinusoidal AC voltage.
• Note the switching frequency:
- On/off switching operations via mains
voltage ≤ 100/24 h.
- ≤ 20/h for a switching frequency of 1 min.
between switching on/off via mains voltage.
• The electrical connection must be made via a fixed
connecting cable equipped with a connector device or
an all-pole switch with a contact opening width of at
least 3 mm (VDE 0700/Part 1).
• Use a connecting cable with sufficient outer diameter
(e.g. H05VV-F3G1.5) to protect against leaking water
and to ensure strain relief on the threaded cable con-
nection.
• Use a heat-resistant connecting cable where fluid
temperatures exceed 90 °C.
• Ensure that the connecting cable does not make con-
tact with either the pipes or the pump.
Mains cable
connection Installing the mains connection cable (Fig. 3):
1. Standard: 3-core coated cable with brass ferrules
2. Optional: Mains cable with 3-pin connection plug
3. Optional: Wilo-Connector cable (Fig. 3, item b)
• Cable assignment:
1 yellow/green: PE (;)
2 blue: N
3 brown: L
• Press down the locking button of the 3-pin pump
plug and connect the plug to the plug connection (12)
of the control module until it snaps into place (Fig. 4).

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Wilo-Connector
connection Installing Wilo-Connector
• Disconnect the connecting cable from the power
supply.
• Observe terminal assignment ( ; (PE), N, L ).
• Connect and install the Wilo-Connector
(Fig. 5a to 5e).
Connecting the pump
• Earth the pump.
• Connect the Wilo-Connector to the connection
cable until it snaps into place (Fig. 5f).
Removing the Wilo-Connector
• Disconnect the connecting cable from the power
supply.
• Remove the Wilo-Connector using a suitable
screwdriver (Fig. 6).
Connection to an
existing device The pump can be directly connected to an existing pump cable with a 3-pin plug (e.g. Molex) when being replaced
(Fig. 3, item a).
• Disconnect the connecting cable from the
power supply.
• Press down the locking button of the installed plug
and remove the plug from the control module.
• Observe the terminal assignment (PE, N, L).
• Connect the existing device plug to the plug
connection (12) of the control module.

Installation and operating instructions Wilo-Para 45
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iPWM/LIN
connection Connecting the iPWM/LIN signal cable (accessories)
• Connect the signal cable plug to the iPWM/LIN
connection (11) until it snaps into place.
iPWM:
• Cable assignment:
1 brown: PWM input (from controller)
2 blue or grey: Signal earth (GND)
3 black: PWM output (from the pump)
•Signal properties:
- Signal frequency: 100 Hz – 5000 Hz
(1000 Hz nominal)
- Signal amplitude: Min. 3.6 V at 3 mA to 24 V
for 7.5 mA, absorbed by the pump interface.
- Signal polarity: yes
LIN:
• Cable assignment:
1 brown: 12 V DC to 24 V DC (+/-10 %)
2 blue or grey: Signal earth (GND)
3 black: LIN bus data
•Signal properties:
- Bus speed: 19200 bit/s
CAUTION!
The connection of mains voltage (230 V AC) to the com -
munication pins (iPWM/LIN) will destroy the product.
• At the PWM input, the maximum voltage is 24 V
pulsed input voltage.

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7 Commissioning
Commissioning only by qualified technicians.
7.1 Venting
• Fill and vent the system correctly.
If the pump does not vent automatically:
• Activate the pump venting function via the operating
button: press and hold for 3 seconds, then release.
The pump venting function is initiated and
lasts 10 minutes.
The top and bottom LED rows flash in turn at 1 second
intervals.
• To cancel, press and hold the operating button
for 3 seconds.
7.2 Setting the control mode
Select control mode The LED selection of control modes and corresponding
pump curves takes place in clockwise succession.
• Press the operating button briefly (approx. 1 second).
LEDs display the set control mode and pump curve.
The following shows the various possible settings (for
example: constant speed / characteristic curve III):
sec3
min10
NOTICE
After venting, the LED display shows the previ-
ously set values of the pump.