UPM GEO OEM circulator pump - condensing environments



The Grundfos UPM GEO is optimised for operation in condensing environments such as the ground side of a geothermal heat pump. The circulator is specially designed for system integration and controlled via a digital low- voltage PWM signal.

Characteristic Features

  • Glandless circulator pumps integrated in products shall have an energy efficiency index (EEI) of not more than 0.23, the benchmark level being 0.20
  • Controlled via a digital low-voltage pulse-width modulation (PWM) signal which means that the speed of rotation depends on the input signal. The speed changes as a function of the input profile.
  • A PWM feedback signal provides information about the current performance of the pump, such as current power consumption or various alarm or warning modes
  • Motor protected against condensed water by means of drain holes and double-coated wiring
  • Fit for operation in condensing environments thanks to the electronics being separated from the motor


  • Ready for Conversion according to Ecodesign Requirements for August, 2015
  • Fit for cold antifreeze media containing glycol or ethanol
  • Fit for condensing environments: Cataphoretically coated cast iron housing
  • Especially optimised for geothermal heat pumps in terms of performance and robustness

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