UPM3 SOLAR OEM circulator pump for HVAC SOLAR systems

UPM3 SOLAR is an OEM high efficient circulator offering flexible solutions for thermal solar systems.

General Details


It is designed to work both with and without PWM signal, allowing you to upgrade your systems without having to change the controller.

With PWM Signal:

  • Externally speed controlled
  • Choice of one of 4 PWM SOLAR Profile C curves

Without PWM Signal:

  • Externally speed controlled
  • Using the Mini Superseal signal cable connection
  • Configured via user interface or pre-set in Grundfos factory

Characteristic Features

  • High Efficiency circulator for integration in HVAC SOLAR systems; EEI ≤ 0.20 EN16297/3
  • Smallest design ever for a circulator; smaller than the well-known UPS circulator
  • Integrated OEM high efficient circulator with one specific external control mode
  • Active or passive inrush current limitation
  • Ambient temperatures of up to 70 °C.


  • Lowest space requirements ever for a circulator integrated in an appliance
  • Optimised design fit for easy accessibility
    Easy access to the user interface from front
    Easy access to the connectors from front
    Easy access to the pump head screws from the front
    Easy access to the de-blocking screw from front
  • Intelligent configuration
    Different signals and profiles available (PWM A, PWM C, KMBus)
    Standard return signal showing power consumption, alarm and operation status
    Other customized input profiles and different return profiles are possible e.g. flow estimation
  • Ready for Conversion according Ecodesign requirement for August, 2015 exceeding benchmark level; EEI ≤ 0.20 EN16297/3
  • Unmatched reliability
    Field and lab tested product quality
    Ceramic bearing shaft – The UPM3 comes equipped with ceramic bearing shafts for a long and trouble-free lifetime. The ceramic material is extremely durable and will not wear.
    Double de-blocking system – Electronic de-blocking that maintains the maximum starting torque up to 25 Ncm and manual de-blocking accessible from the front without demounting the control box.
    High temperature resilience – The resilience to heat will enhance the possibilities of system integration enormously. Ambient temperatures of up to 70 °C.
Technical service