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Stratos MAXO-D 50/0,5-8 PN 6/10 | Wilo
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Stratos MAXO-D 50/0,5-8 PN 6/10

Article number: 2164653
Technical data
Tender text

Premium smart-pump Wilo-Stratos MAXO-D

High-efficiency inline glandless twin-head pump with EC motor and electronic power adjustment. Can be used for cold water, heating water and water/glycol mixtures. Energy efficiency index (EEI) between ≤ 0.17 and ≤ 0.19 depending on pump type.

Control modes:

  • Permanent, automatic performance adaptation to system requirements without setpoint specification Wilo Dynamic Adapt plus (factory setting). Up to 20% energy savings compared to dp-v control mode.
  • Constant temperature (T-const.)
  • Constant differential temperature (dT-const.)
  • Needs-based volume flow optimisation of the feeder pump through connectivity and communication between multiple pumps (Multi-Flow Adaptation).
  • Constant volume flow (Q-const.)
  • Differential pressure control (dp-c) to a remote point in the pipe network (index circuit evaluator)
  • Constant differential pressure (dp-c)
  • Variable differential pressure (dp-v) with the option to set the nominal duty point
  • Constant speed (n-const.)
  • User-defined PID control


  • Heat quantity measurement
  • Cooling quantity measurement
  • Pump automatically deactivates when no flow is detected (No-Flow Stop)
  • Switchover between heating and cooling mode (automatic, external or manual)
  • Adjustable volume flow limiter using the Q-Limit function (Qmin. and Qmax.)
  • Operating modes of twin-head pumps: Efficiency-optimised parallel operation for dp-c and dp-v, main and standby operation
  • Ability to save and restore configured pump settings (3 restoration points)
  • Fault and warning messages shown in plain text with advice on resolving the issue
  • Pump venting function for automatic venting of the rotor chamber
  • Automatic setback operation
  • Automatic deblocking function and integrated full motor protection
  • Dry-running detection


  • Control mode
  • Setpoint
  • Volume flow
  • Temperature
  • Power consumption
  • Electric consumption
  • Active influences (e.g. STOP, No-Flow Stop)


  • 2 configurable analogue inputs: 0–10 V, 2–10 V, 0–20 mA, 4–20 mA and commercially available PT1000; +24 V DC power supply
  • 2 configurable digital inputs (Ext. OFF, Ext. Min, Ext. Max, heating/cooling, manual override (uncoupled from building automation), operation lock (key lock and remote operation configuration protection))
  • 2 configurable signal relays for operational and fault messages
  • Slot for Wilo-CIF modules with interfaces for building automation BA (optional accessories: CIF modules Modbus RTU, Modbus TCP, BACnet MS/TP, BACnet IP, LON, PLR, CANopen)
  • Wilo Net as a Wilo system bus for communication between Wilo products, e.g. Multi-Flow Adaptation; double pump operation and Wilo-Smart Gateway
  • Integrated temperature sensor
  • Automatic emergency operation with definable pump speed for exceptional circumstances, e.g. bus communication or sensor value malfunction
  • Graphic colour display (4.3 inches) with one-button manual operation
  • Use the Wilo-Assistant app to read and set operating data and –among other things– set up a commissioning protocol through the Bluetooth interface (no further accessories required)
  • Integrated double pump management (double pumps are prewired) when using 2 single pumps as double pump unit (connection via Wilo Net)
  • Cable break detection when using an analogue signal (in connection with 2–10 V or 4–20 mA)
  • Outdoor installation with weather protection possible in accordance with the installation and operating instructions
  • Pre-set date and time

Scope of delivery

  • Pump
  • 2x optimised Wilo-Connector, suitable for all sizes
  • 4x threaded cable gland, M16 x 1.5
  • Washers for flange screws M12 and M16 (for nominal connection diameters DN 32 to DN 65)
  • 2x gaskets for threaded connection
  • Concise Installation and operating instructions

Optional accessories:

  • CIF module: Modbus TCP, Modbus RTU, BACnet IP, BACnet MS/TP, LON, PLR, CANopen
  • PT 1000 (B) pipe contact sensor (for domestic hot water)
  • PT 1000 (AA) sensor for installation in immersion well
  • Differential pressure sensor
  • Smart Gateway
Operating Data
Min. fluid temperature Tmin -10 °C
Max. fluid temperature Tmax 110 °C
Min. ambient temperature Tmin -10 °C
Max. ambient temperature Tmax 40 °C
Maximum operating pressure PN 10 bar
Minimum suction head at 50 °C m 5 m
Minimum suction head at 95 °C m 12 m
Minimum suction head at 110 °C 18 m
Motor data
Energy efficiency index (EEI) ≤0.17
Interference emission EN 61800-3;2004+A1;2012 /residential area (C1)
Interference immunity EN 61800-3;2004+A1;2012 /industrial environment (C2)
Mains connection 1~230 V, 50/60 Hz
Power consumption P1 max 390 W
Min. speed nmin 650 1/min
Max. speed nmax 3800 1/min
Protection class motor IPX4D
Threaded cable connection 5 x M16x1.5
Pump housing Grey cast iron
Impeller PPS-GF40
Shaft 1.4028, DLC-coated
Bearing Carbon, antimony-impregnated
Installation dimensions
Pipe connection on the suction side DNs DN 50
Pipe connection on the discharge side DNd DN 50
Port-to-port length L0 240 mm
Ordering information
Brand Wilo
Product description Stratos MAXO-D 50/0,5-8 PN 6/10
Net weight, approx. m 36.6 kg
Article number 2164653

Installation and operating instructions

Wilo-Stratos MAXO/-D/-Z

Article Number 2226401
Edition 2023-02
Page format 148.2 x 209.9 mm
Number of pages 272
PDF (6 MB)

Certification booklet

Stratos MAXO, Stratos MAXO-D, Stratos MAXO-Z, Stratos , Stratos-D, Stratos-Z, Stratos-ZD, Yonos MAXO,Yonos MAXO-D, Yonos MAXO-Z, Yonos ECO BMS, Yonos PARA HF, Stratos PARA, Stratos PARA-Z, TOP-Z, TOP-S Transportsysteme

Article Number 2209011
Edition 2022-11
Page format 209.9 x 297.0 mm
Number of pages 72
PDF (28 MB)

Certificate REACH

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (262 KB)

Release notes Software

Release notes Stratos MAXO

Article Number 2212705
Edition 2021-04
Page format 209.9 x 297.0 mm
Number of pages 60
PDF (4 MB)


Lithium Battery Test Summary

Page format 209.9 x 297.0 mm
Number of pages 1
PDF (179 KB)

Lithium Battery Test Summary / UN38.3

Page format 209.9 x 297.0 mm
Number of pages 1
PDF (179 KB)