Wilo Varios PICO Manuale utente
4 219 917-Ed.01 / 2017-11
Wilo-Varios PICO
Pioneering for You
en Installation and operating instructions
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Installation and operating instructions Wilo-Varios PICO 5
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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.
6WILO SE 11/2017
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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 a qualified elec-
trician (in accordance with EN 50110-1).
Risk of fatal injury from electric voltage
General danger symbol
Warning of hot surfaces/fluids
Warning of magnetic fields
Notices
Installation and operating instructions Wilo-Varios PICO 7
en
• 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 elec-
trician.
• 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
control 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 is not allowed to be carried out by children
without supervision.
8WILO SE 11/2017
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3 Product description and function
Overview Wilo-Varios PICO (Fig. 1)
1 Pump housing with screwed connections
2 Glandless motor
3 Condensate drain openings
(4x around circumference)
4Housing screws
5 Control module
6 PWM signal cable connection
7 Rating plate
8 Operating buttons for pump adjustment
9 Fault signal LED
10 Display of control mode
11 Display of PWM signal type
12 Display of set pump curve (I, II, III)
13 Mains connection: 3-pin plug connection
14 Wilo-Connector
15 Connection cable: 3-pin pump plug and
Wilo-Connector 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-Varios PICO 25/1-7-130
Varios PICO High-efficiency circulator
25 Screwed connection DN 25 (Rp 1)
1-7 1 = minimum delivery head in m (adjustable down
to 0.5 m)
7 = maximum delivery head in m at Q = 0 m³/h
130 Port-to-port length: 130 mm or 180 mm
Installation and operating instructions Wilo-Varios PICO 9
en
Technical data
Indicator lights
(LEDs)
• Display of selected control mode Δp-v, Δp-c,
constant speed and external speed control
• Display of selected pump curve (I, II, III) or PWM signal
type (PWM1, PWM2) within the control mode.
• LED indicator combinations during pump venting
function, manual restart and LED coding within the
sync function.
•Signal display
• LED lights up green during normal operation.
• LED flashes red or green or lights up permanently
red in the case of a fault signal.
• LED lights up red in the event of incorrect LED cod-
ing after ending the sync function.
Connection voltage 1 ~ 230 V ± 10%, 50/60 Hz
Protection class IP See rating plate (7)
Energy efficiency index EEI See rating plate (7)
Fluid temperatures at max. ambient
temperature +40 °C -10 °C to +95 °C
Fluid temperatures at max. ambient
temperature +25 °C -10 °C to +110 °C
Permitted ambient temperature -10 °C to +40 °C
Max. operating pressure 10 bar (1000 kPa)
Minimum inlet pressure
at +95 °C/+110 °C 0.3 bar/1.0 bar (30 kPa/100 kPa)
10 WILO SE 11/2017
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Operating buttons
Top operating button
Press
•Select control mode.
• Activate the pump venting function (press and hold).
• Select the LED during the sync function.
Bottom operating button
Press
• Selection of pump curve (I, II, III) or PWM signal
(PWM1, PWM2) within the control mode.
• Activate manual restart (press and hold).
• Activate or deactivate selected LED during the sync
function.
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.
II
III
I
H/m
Q/m³/h
NOTICE
Factory setting: Δp-v, pump curve II
Indice
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