Wilo Yonos PICO User manual
4 209 895-Ed.01 / 2017-03
Wilo-Yonos PICO
Pioneering for You
en Installation and operating instructions
Fig. 1:
1 9
4
5
2
3
671112
810
Fig. 2: Fig. 3a:
Fig. 3b:
PE NL
Fig. 3c:
Fig. 3d:
Fig. 3e:
Fig. 3f:
Fig. 4:
4Wilo SE 03/2017
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1 General information
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 precondition
for the intended use and correct operation of the pro-
duct. All information 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 chapter contains basic information which must be
adhered to during installation, operation and mainte-
nance. Additionally, the instructions and safety instruc-
tions in the other chapters must be observed.
Failure to follow the installation and operating instruc-
tions will result in risk of injury to persons and damage 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:
• Danger to persons due to electrical, mechanical and
bacteriological factors as well as electromagnetic fields
• Environmental risks due to leakage of hazardous sub-
stances
• 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 that are displayed in different ways:
• Safety instructions relating to personal injury start
with a signal word and are preceded by a
corresponding symbol.
Installation and operating instructions Wilo-Yonos PICO 5
en
• Safety instructions relating to property damage start
with a signal word and are displayed
without
a symbol.
Signal words DANGER!
Failure to observe the safety instructions will result in
serious injuries or death!
WARNING!
Failure to follow the instructions can lead to (serious)
injuries!
CAUTION!
Failure to follow the instructions can lead to property
damage and a possible total loss.
NOTE
Useful information on handling the product.
Symbols These instructions use the following symbols:
Personnel
qualifications
Personnel must:
• Be instructed in the locally applicable accident pre-
vention regulations.
• Have read and understood the installation and
operating 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/media
Warning of magnetic fields
Notes
6Wilo SE 03/2017
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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 mounting materials.
• The product must be operated by persons who are
instructed in the functioning of the complete system.
Definition of “qualified electrician”
A qualified electrician is a person with appropriate techni
-
cal education, knowledge and experience who can iden
-
tify 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 by 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 secure it against 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.
Obligations of the
operator
• Have all work carried out by qualified personnel only.
• Ensure on-site contact protection from hot com-
ponents and electrical hazards.
• Have defective gaskets and connecting cables replaced.
This device can be used by children from 8 years old as
well as persons with limited physical, sensory or mental
capabilities 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 may arise. Chil-
dren are not allowed to play with the device. Cleaning
and user maintenance may not be carried out by children
without supervision.
Installation and operating instructions Wilo-Yonos PICO 7
en
3 Product description and function
Overview Wilo-Yonos PICO (Fig. 1)
1 Pump housing with screwed connections
2 Glandless pump motor
3 Condensate drain openings
(4x around circumference)
4 Rating plate
5Housing screws
6 Control module
7 LED display
8Operating button
9 Wilo-Connector, electrical mains connection
10 Function key
11 Function LED
12 Fault signal LED
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-Yonos PICO 25/1-6 130
Yonos PICO High-efficiency circulator
25 Screwed connection DN 25 (Rp 1)
1-6 1 = Minimum delivery head in m (adjustable down
to 0.5 m)
6 = Maximum delivery head in m at Q = 0 m³/h
130 Port-to-port length: 130 mm or 180 mm
8Wilo SE 03/2017
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Technical data
LED display
• Display of the current power consumption in W.
• Display of the setpoint H of the delivery head
(differential pressure) in m.
• Display of selected constant speed
(c1 = I, c2 = II, c3 = III).
• Display of warning and fault signals.
3.1 Controls
Operating button Turn
• Select application/control mode.
• Set setpoint H of the delivery head (differential pres-
sure).
• Select constant rotation speed.
Connection voltage 1 ~ 230 V ± 10 %, 50/60 Hz
Protection class IP See rating plate (4)
Energy efficiency index EEI See rating plate (4)
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)
Min. inlet pressure at +95 °C/+110 °C 0.3 bar/1.0 bar (30 kPa/100 kPa)
Installation and operating instructions Wilo-Yonos PICO 9
en
Function key Press
• Start pump venting function.
• activate pump manual restart.
3.2 Applications/control mode and functions
Radiator heating
system
Recommended for two-pipe heating systems with radi-
ators to reduce the flow noises at the thermostatic
valves.
Variable differential pressure (Δp-v):
The pump reduces the delivery head at a decreasing vol-
ume flow in the pipe network to half.
Electrical energy saving by adjusting the delivery head to
the volume flow requirement and lower flow rates.
Underfloor heating Recommended for underfloor heating.
Or for large-sized pipes as well as all applications with-
out changeable pipe network curve (e.g. storage charge
pumps) as well as single-pipe heating systems with radi-
ators.
Constant differential pressure (Δp-c):
The controller keeps the set delivery head constant
irrespective of the conveyed volume flow.
H max
H
H min
Hs
Q
Hs
1
/2
NOTE
Factory setting: Δp-v, ½ Hmax
H max
H
H min
Hs
Q
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