HFOs are a compromise between very low greenhouse effect and, for some molecules, limited flammability.
In order to categorize this characteristic, a new ASHRAE classification has been introduced which takes into account the difference in the flame spread speed of flammable substances compared to moderately flammable ones (<0.1 m/s)
Form of supply
7 litres
12,5 litres
21,6 litres
40 litres
from 800 to 950 litres
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