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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
Language bg, cs, da, de, el, en, es, et, fi, fr, hr, hu, it, lt, lv, nl, no, pl, pt, ro, ru, sk, sl, sr, sv, tr, uk
PDF (19 MB)

Wilo-Yonos PICO-Z

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