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Wilo-Yonos PICO-Z | Wilo

Wilo-Yonos PICO-Z

Quick switch to energy-saving domestic hot water circulation.

Your advantages
Wilo-Yonos PICO-Z

Quick switch to energy-saving domestic hot water circulation.

The compact Wilo-Yonos PICO-Z is the ideal replacement pump when switching to energy-saving circulators for domestic hot water applications in detached, semi-detached and multi-family houses. The high-efficiency pump equipped with a thermal insulation shell offers a high-degree of hygienic safety due to its stainless-steel housing. The Wilo-Connector enables quick electrical installation. Replacing a Wilo-Star-Z is very easy due to new, equivalent pump versions as well as the continuous control mode “n-cst” for selecting the correct pump curve. With the automatic and manual restart as well as the pump venting function, the Wilo-Yonos PICO-Z offers all the standard functions required for reliable operation.

Your advantages

  • Stainless steel pump housing provides hygienic safety
  • EC motor enables energy-saving supply
  • Green Button Technology, intuitive user interface with LED display and continuous control functions offer ease of use
  • Simple electrical installation with the Wilo-Connector
  • Automatically and manually triggered restart or pump venting function allow for an easy maintenance and a high degree of operational reliability
  • Current parameters such as flow and power consumption in view at all times via LED display
Series description
Wilo-Yonos PICO-Z


Glandless circulator with screwed connection, blocking-current proof EC motor and integrated electronic power control.


Domestic hot water circulation systems in the industry and building services.


Operating modes

  • Δ p-c for constant differential pressure
  • Constant speed (3 constant speed stages)
  • Constant speed (continuously adjustable)

Manual functions

  • Setting the operating mode
  • Setting of pump output (delivery head)
  • Setting the constant speed (continuous or fixed)
  • Pump venting function
  • Manual restart

Automatic functions

  • Continuous power adjustment according to the operating mode
  • Automatic restart
  • Automatic dry-running detection

Signal and display functions

  • Display of the current power consumption in W
  • Display of the current flow in m³/h
  • Displays during setting:
    • Delivery head in m
    • Constant speed (c1, c2; c3)
    • Speed during continuous adjustment (n/100)
  • Display of fault messages (error codes)
  • Display of manually activated restart or pump venting function


  • Wrench attachment point on pump body
  • Quick electrical connection with Wilo-Connector
  • Blocking-current proof motor
  • Particle filter
  • Thermal insulation as standard



Wilo-Yonos PICO-Z 20/0,5-4 150

Yonos PICO

High-efficiency pump (screw-end pump), electronically controlled


Domestic hot water circulation


Nominal connection diameter


Nominal delivery head range [m]


Port-to-port length [mm]

Technical data

  • Fluid temperature +2 °C to +95 °C
  • Mains connection 1~230 V, 50 Hz
  • Protection class IPX4D
  • Screwed connection G1, G1½, G1¼
  • Max. operating pressure 10 bar


  • Pump housing: Stainless steel
  • Impeller: Plastic
  • Shaft: Oxide ceramic
  • Bearing: Carbon, synthetic resin-impregnated

Scope of delivery

  • Pump
  • Thermal insulation
  • Wilo-Connector
  • Gaskets
  • Installation and operating instructions


  • Screwed connections
  • Adapter fittings
  • Wilo-Connector with 2 m connection cable and shockproof plug
  • Angle plug with 2 m connection cable

Installation and operating instructions

Wilo-Yonos PICO-Z - Quick Guide

Article Number 4252849
Edition 2022-11
Number of pages 80
PDF (19 MB)

Wilo-Yonos PICO-Z

Article Number 4258256
Edition 2023-02
Number of pages 28
PDF (4 MB)


CE 2223542-01

Number of pages 6
PDF (220 KB)