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Refrigerant Glide: implications when using R407F (GN27)

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Refrigerant Glide: implications when using R407F (GN27)

R407F is now a widely used refrigerant for commercial and industrial refrigeration applications in Europe. It is used primarily as a lower GWP replacement for R404A and R507 and as a retrofit replacement for R22. R407F is a non-azeotropic mixture consisting of R32, R125 and R134a in the proportions 30%/30%/40% by weight.

This guidance note covers:

  • the properties of this refrigerant
  • refrigeration system performance
  • temperature glide
  • system performance rating
  • use of refrigerants with glide
  • servicing considerations
  • leak detection and recharging
  • handling considerations

This is a summary of the 5-page Guidance note.  Revised 24.3.2016 (2nd version)

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