SI 6TU

SI 6TU

SI 6TU

Highly efficient brine-to-water heat pump for indoor installation. 6 kW heat output.

Simply tap the ground.

The SI 6TU is a highly efficient brine-to-water heat pump that uses the thermal energy from the ground and can be installed easily indoors. With 6 kW heat output, it is the most efficient solution for newly built single family homes with a living area up to 140 sqm. Flexible expansion options are available thanks to the universal design. Domestic hot water preparation, for example, and the combination with an oil or gas boiler. Different heat distribution systems (radiators, underfloor heating, fan convectors) can also be connected here.

  • Naturally quiet. Sound-optimised through insulated metal casing and double vibration-isolated compressor.
  • Low operating costs. High seasonal performance factors thanks to economizer and sensor monitoring of the refrigeration circuit for high operational reliability and integrated thermal energy metering.
  • Expansion options. Bivalent or bivalent-renewable operation, distribution systems with mixed and unmixed heating circuits (e.g. underfloor heating and radiators). Even more efficient room temperature control Smart-RTC+.
  • Future-orientated. Use of load-variable tariffs or self-produced PV-electricity possible: SmartGrid Ready.
  • Intelligent. Eligible for funding in existing buildings thanks to high efficiency. Suitable for use in new builds for compliance with the German federal energy efficiency ordinance (EnEV) and Renewable Energy Heat Act (EEWärmeG).
  • Adjustable. Including for special applications, such as use with a heat source temperature up to –10 °C.

Technical Data.

Energy efficiency class with 35 °C flow temperature: A++


Energy efficiency class with 55 °C flow temperature: A++


Heat output B0/W35: 6,1 kW


COP B0/W35: 4,7


Lower operating limit heat source (heating operation): -5 Grad


Upper operating limit heat source (heating operation): 25 Grad


Max. flow temperature: 62 Grad


Sound pressure level in 1 m: 34 dB(A)


Width: 650 mm


Height: 845 mm


Depth: 565 mm


Weight: 119 kg


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