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BlueBox SIGMA Zero

High efficiency water source chillers and heat pumps with natural refrigerant, with inverter scroll and reciprocating compressors. 20 ÷ 75 kW


Hi: chiller with inverter compressor
Hi HP: reversible heat pump with inverter compressor
Hi HPW: heat pump reversible on hydronic side, with inverter compressor
Hi OH: heat pump with inverter compressor


  • Natural refrigerant R290 - GWP=3.
  • High efficiency and compact footprint
  • Chiller version: user temperature from -10°C up to 20°C.
  • Heat pump version: hot water up to 75°C
  • Outdoor version available
  • BlueThink advanced control with integrate web server.
  • Multilogic function and Blueye supervision system. (options)

Download documents

You can find more documents on our document search page. Looking for older versions, you can find them in the document archive

Comprehensive detailed product information for the best selection and integration in project design
Installation, Operating, Maintenance and Safety information
Our products and services presented in an easy-to-access manner
Declarations and certificates etc
Wiring diagrams and hydraulic schemes etc
Document Article Document type Date Download
Leaflet (EN) (pdf 5.06MB) Sigma Zero Brochure 04/05/2023

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