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3.4
Technical data
3.5
Control mode and functions
H
H max
Hs
H min
H
max
III
I I
min
I
H
max
Hs
min
4
Application/use
4.1
Intended use
8
Connection voltage
Protection class IP
Fluid temperatures at max. ambient tem-
perature +40 °C
Permitted ambient temperature
Max. operating pressure
Minimum inlet pressure at +95 °C
Constant differential pressure (Δp-c)
The control keeps the set delivery head constant at the set differential pressure setpoint Hs.
Recommended for systems with balancing valves.
Q
Constant speed I II III
I II III
The pump runs uncontrolled in three prescribed fixed speed stages.
Recommended for systems with fixed system resistance requiring a constant volume flow or
for systems with balancing valves.
Q
Constant speed
The pump is running uncontrolled via a continuously adjustable value at constant speed. The
speed (n) corresponds to the default value x 100 [rpm].
Recommended for systems with fixed system resistance requiring a constant volume flow or
for systems with balancing valves.
Q
Pump venting function
The pump venting function is activated via the function key and automatically vents the
pump for a period of 10 minutes.
The pump venting function removes accumulated air from the pump rotor chamber.
The domestic hot water circulation system is not vented using the pump venting function.
Manual restart
A manual restart is activated via the function key and unblocks the pump as required.
High-efficiency circulators from this series are only used for pumping drinking water in re-
circulation loop systems in industry and building services.
These pumps are specially adapted to the operating conditions in domestic hot water cir-
culation systems through the selection of materials and their design, taking into account
the national guidelines.
NOTICE
Factory setting: ½ n
[rpm]
max
Installation and operating instructions • Wilo-Yonos PICO-Z • Ed.01/2023-02
1 ~ 230 V ± 10 %, 50/60 Hz
See rating plate (4)
+2 °C to +95 °C
-10 °C to +40 °C
10 bar (1000 kPa)
0.3 bar (30 kPa)
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