Wilo-Yonos MAXO-Z | Wilo

Wilo-Yonos MAXO-Z

The most efficient solution for domestic hot water circulation in larger buildings.

Your advantages
Wilo-Yonos MAXO-Z 25

The most efficient solution for domestic hot water circulation in larger buildings.

The Wilo-Yonos MAXO-Z is an efficient circulator for the hygienically safe provision of domestic hot water in commercial buildings. Thanks to its LED display, it gives you complete transparency regarding the delivery head, speed stage or any possible faults. The compact construction and Wilo plug for the electrical connection simplifies the installation. The Green Button makes pump operation simple.

Your advantages

  • High drinking water hygiene ensured through collective fault signal
  • Energy-saving due to high-efficiency hydraulics and synchronous motor
  • Complete transparency of the delivery head, speed and possible faults thanks to its LED display
  • Simple adjustment over three speed stages using the green Knob when replacing an uncontrolled standard pump
  • Easier electrical connection thanks to the Wilo-Plug
  • Compact design and proven user-friendliness
Series description
Yonos MAXO-Z


Glandless circulator with threaded connection or flange connection, EC motor with automatic power adjustment.


Domestic hot water circulation systems in industry and building services.


Operating modes

  • Δp-c for constant differential pressure
  • Δp-v for variable differential pressure
  • n = constant (3 speed stages)

Manual functions

  • Setting the operating mode
  • Setting of pump output (delivery head)
  • Setting the speed stages

Automatic functions

  • Infinitely variable power adjustment according to the operating mode
  • Deblocking function
  • Soft start
  • Integrated full motor protection

Signal and display functions

  • Collective fault signal (potential-free NC contact)
  • Fault signal light
  • LED segment display for displaying the delivery head and error codes
  • Display of the configured speed stage (C1, C2 or C3)


  • Wrench attachment point on pump body (for threaded pipe union pumps)
  • Quick electrical connection with Wilo plug. For the connection of the mains and SSM lines, with integrated strain relief
  • For flange-end pumps: Flange versions
    • Standard version for DN 40 to DN 65 pumps: Combination flange PN 6/10 for counter flanges PN 6 and PN 10

Scope of delivery

  • Pump
  • Including gaskets for threaded connection
  • Incl. washers for flange screws (for nominal connection diameters DN 40 - DN 65)
  • Including installation and operating instructions

Type key


Wilo-Yonos MAXO-Z 30/0.5-12

Yonos MAXO

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


Single pump for domestic hot water circulation


Nominal connection diameter


Nominal delivery head range [m]

Technical data

  • Permissible temperature range drinking water up to 3.57 mmol/l (20 °dH): 0 °C to +80 °C
  • Mains connection 1~230 V, 50/60 Hz
  • Protection class IPX4D
  • Screwed connection or flange connection (depending on type) Rp 1 to DN 65
  • Max. operating pressure of standard version: 6/10 bar or 6 bar (special version: 10 bar)


  • Pump housing made of red brass
  • Shaft: Stainless steel
  • Bearing: Carbon, synthetic resin-impregnated
  • Impeller: Plastic

Installation and operating instructions

Wilo-Yonos MAXO-Z

Article Number 2189869
Edition 1703
Page format 209.9 x 297.0 mm
Number of pages 21
PDF (5 MB)

Wilo-Yonos MAXO-Z

Article Number 2187324
Edition 1703
Page format 630.1 x 148.2 mm
Number of pages 17
PDF (6 MB)

Wilo-Yonos MAXO /-D/-Z

Article Number 2212299
Edition 2020-12
Page format 630.1 x 148.2 mm
Number of pages 160
PDF (7 MB)

General overview (Documents)

General overview 2021 International version

Edition 2020
Page format 209.9 x 297.0 mm
Number of pages 74
PDF (10 MB)

Certification booklet

Stratos, Stratos-D, Stratos-Z, Stratos-ZD, Stratos MAXO, Stratos MAXO-D, Stratos MAXO-Z, Stratos PARA, Stratos PARA-Z,Yonos MAXO, Yonos MAXO-Z, Yonos ECO BMS, Yonos PARA HF, TOP-S, TOP-Z, TOP-SD, TOP-RL, TOP-I

Page format 209.9 x 297.0 mm
Number of pages 40
PDF (6 MB)

Certificate REACH (Documents)

REACH regulation

Edition 2020-08
Page format 209.9 x 297.0 mm
Number of pages 2
PDF (158 KB)