A Guide to Flammable Refrigerants has been released.
It includes a "traffic light" assessment of which systems are suitable with the use of flammable refrigerants.
They are divided into green, amber and red categories.
The publication outlines the basic properties of flammable refrigerants such as boiling points and lower flammability limits before going into maximum flammable gas charge sizes.
It also provides tables summarising maximum charge sizes for A2 and A3 class refrigerants.
The publication, which has been released by the British Refrigeration Association, also includes codes of practice as well as specifying how cylinders and charged systems should be transported.
The BRA Guide is available for download.
