Evikon E2630-HFC, User Manual

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E2630-HFC Rev 23.03.2021
Hydrofluorocarbons
HFCs are relatively non-flammable, chemically stable, and nonreactive.
Classification of halocarbon refrigerants
Group Refrigerants
Chlorofluorocarbons (CFC) R11, R12
Hydrochlorofluorocarbons
(HCFC)
R22, R141b, R142b
Hydrofluorocarbons (HFC) R32, R125, R134a, R143a
Hydrofluoroolefins (HFO) R 1234ez, R1234yf, R1336mzz
Chlorine containing refrigerants (CFC and HCFC) are considered to be damaging to the ozone layer
and contributing to the greenhouse effect. According to the Montreal Protocol, chlorine-containing
halocarbons should be completely dismissed and their manufacturing closed down.
Hydrofluorocarbons (HFC) contain no chlorine and are safer for the environment. Now
hydrofluorocarbons are the most commonly used halocarbon refrigerants.
Hydrofluoroolefins (HFO) is the last generation of refrigerants, more environmentally friendly than
HFCs, but moderately flammable (A2L Class).
Properties of selected halocarbons
Name Type Components Components weight % Boiling point
R12 CFC CCl
2
F
2
100 −29.8 °C
R22 CFC CHClF
2
100 −40.8 °C
R125 HFC CHF
2
CF
3
100 −48.5 °C
R134a HCFC CF
3
CH
2
F 100 −26.2°C
R143a HCFC CF
3
CH
3
100 -47.5 °C
R32 HFC CH
2
F
2
100 −52 °C
R1234yf HFO 2,3,3,3-Tetrafluoropropene 100 -30 °C
R1234ze HFO 1,3,3,3-Tetrafluoropropene 100 -19 °C
R404a mixture R125, R143a, R134a 44:52:4 −47.8 °C
R407c mixture R32, R125, R134a 23:25:52 −43 °C
R410a mixture R32, R125 50:50 −48.5 °C
Overexposure may cause dizziness and loss of concentration. At higher concentrations, CNS
depression and cardiac arrhythmia may result from exposure. Vapors displace air and can cause
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