R410A
FLEXYII_WSHP-IOM-0909-E Page 99
REFRIGERANT DEFINITION
R-410A is an HFC, or hydro fluorocarbon, and is made of
hydrogen, fluorine, and carbon atoms. Because it has no
chlorine, it won’t interact with the ozone layer once it
breaks down. It’s non-toxic and non-inflammable.
CHEMICAL CHARACTERISTICS OF REFRIGERANT
*1 see table below :
Refrigerant Safety classifications from ASHRAE Standard
Lower toxicity Higher toxicity
Higher
flammability
A3 B3
LFL≤0.10kg/m3 or
heat of
combustion≥19000k
J/kg
Lower
flammability
A2 B2
LFL>0.10kg/m3 and
heat of combustion
>19000kJ/kg
No flame
propagation
A1 B1 No LFL
No indentified
toxicity at
concentration
≤ 400ppm
Evidence of
toxicity below
400ppm
LFL = Lower Flammability Limit
*2 Based on CFC11
*3 Based on CO2
STANDARDS THAT MUST BE MET WITH R410A:
• An ester oil (POE) is used for R410A (as with
R407c)
• It’s important to work with absolute cleanliness
• Brazing must be done with the use of Nitrogen
(OFN)
• The system must be evacuated thoroughly
(0.3mbar or less)
• The system must always be charged in the liquid
phase
SATURATION PRESSURE
Saturation pressure (relative pressure in bars)
Temp. °C R22 R407C Vapor R410A
70 28.97 31.94 46.54
65 26.01 28.55 41.7
60 23.27 25.44 37.29
58 22.24 24.26 35.63
56 21.24 23.13 34.03
54 20.27 22.04 32.49
52 19.33 20.99 31.01
50 18.43 19.98 29.57
48 17.55 19 28.19
46 16.70 18.05 26.86
44 15.89 17.14 25.57
42 15.10 16.26 24.33
40 14.34 15.42 23.14
38 13.60 14.61 21.99
36 12.89 13.82 20.88
34 12.21 13.07 19.81
32 11.55 12.35 18.79
30 10.92 11.65 17.8
28 10.31 10.99 16.85
26 9.72 10.35 15.93
24 9.16 9.73 15.06
22 8.62 9.14 14.21
20 8.10 8.58 13.41
18 7.60 8.04 12.63
16 7.12 7.52 11.89
14 6.67 7.03 11.17
12 6.23 6.55 10.49
10 5.81 6.1 9.84
8 5.41 5.67 9.21
6 5.03 5.26 8.61
4 4.66 4.87 8.04
2 4.31 4.5 7.5
0 3.98 4.14 6.98
-2 3.66 3.81 6.48
-4 3.36 3.49 6.01
-6 3.08 3.19 5.56
-8 2.81 2.9 5.14
-10 2.55 2.63 4.73
-12 2.30 2.37 4.35
-14 2.07 2.13 3.98
-16 1.85 1.9 3.64
-18 1.65 1.68 3.31
-20 1.45 1.48 3
Name R22 R407C R410A
Component HCFC22
HFC32/HFC12
5/HFC134a
HFC32/HFC12
5
Composition (%) 100 23/25/52 50/50
Type of refrigerant
Single
refrigerant
Non-azeotropic
refrigerant
mixture
Near
azeotropic
refrigerant
mixture
Chlorine Contained Not contained Not contained
Safety Class *1 A1 A1/A1 A1/A1
Ozone Depletion
Potential (ODP) *2
0.055 0 0
Global Warming
Potential (GWP) *3
1700 1530 1730
Refrigerant charging
method
Gas
change
Refrigerant is
taken out from
the liquid
phase of gas
cylinder
Refrigerant is
taken out from
the liquid
phase of gas
cylinder
Additional charge
due to refrigerant
leakage
Possible
Possible
temporarily
Possible
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