Manual for Refrigeration Servicing Technicians - UNEP - Division of ...

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Refrigerants
Application
Industrial
Process
Refrigeration
Refrigerated
Transport
Split and
ducted air
conditioners
Portable and
window
Application
units
Heat Pumps
Chillers
Mobile air
conditioning
(MAC)
Traditional
refrigerants
R22
R502
R717
R290/
R1270
R12
R502, R22
R22
R22 Traditional
refrigerants
R22
R11
R123
R12
R22
R12
Retrofit / drop-in refrigerants
Transitional Longer term
R408A (HT), R411A,
R411B, R412A,
R415A, R418A
R401A, R401C,
R405A, R406A,
R409A (HT), R414A,
R414B, R415B,
R416A (HT), R420A
(HT)
R408A (HT), R411A,
R411B, R412A,
R415A, R418A
R408A, R411A,
R411B, R412A,
R415A, R418A
R417A, R419A (HT),
R422B, R422D,
R424A, R431A,
R438A
R426A, R429A (HT),
R430A, R435A,
R436A*, R436B*,
R437A (LT)
R290*,R417A,
R419A (HT), R422B,
R422D, R424A,
R431A, R438A
R290*,R417A,
R419A, R422B,
R422D, R424A,
R431A, R438A
R290*,R417A,
R408A, R411A,
R411B, R412A,
Retrofit / drop-in R419A, refrigerants R422B,
R422D, R424A,
R415A, R418A
Transitional R431A, Longer R438A term
R408A, R411A,
R411B, R412A,
R415A, R418A
R290*,R417A,
R419A, R422B,
R422D, R424A,
R431A, R438A
New system refrigerants
R404A, R407A/B/D/E, R421A,
R421B, R427A, R433A/B/C,
R507A, R744, Indirect systems
(using R290*, R1270*), R717*
R134a, R423A, R435A, R436A*,
R436B*, R510A*
R404A, R407A/B/D/E, R421A,
R421B, R427A, R433A/B/C,
R507A, R744, R290*, R1270*
R407A/C/D/E, R421A, R427A,
R433A/B/C, R290*, R1270*, R410A
R407A/C/D/E, R421A, R427A,
New R433A/B/C, system refrigerants R290*, R1270*, R410A
R407A/C/D/E, R421A, R427A,
R433A/B/C, R744, R290*, R1270*,
R410A
None None R236ea, R236fa, R245fa
R401A, R401C,
R405A, R406A,
R409A, R414A,
R414B, R415B,
R416A, R420A
R408A, R411A,
R411B, R412A,
R415A, R418A
R401A, R401C,
R405A, R406A,
R409A, R414A,
R414B, R415B,
R416A, R420A
R426A, R429A,
R430A, R435A
R290*,R417A,
R419A, R422B,
R422D, R424A,
R431A, R438A
R426A, R429A,
R430A, R435A,
R436A*, R436B*
R134a, R423A, R435A
R407A/C/D/E, R421A, R427A,
R433A/B/C, R744, R290*, R1270*,
R410A
R134a, R744
A number of additional observations are made:
• Many of the blends in the “longer term” and “new
system” lists contain HFCs and PFCs, which are
included in the Kyoto Protocol, and are being
legislated against in several European counties.
• Flammable refrigerants – indicated with an asterisk (*)
must be handled appropriately, that is, systems are
designed and maintained according to safety rules. If
they are used as a drop-in refrigerant, the technician
must ensure that the conversion has been done
according to the appropriate safety rules.
• The initials “(HT)” and “(LT)” imply that the refrigerant
is more suited to high temperature (eg, chilled food) or
low temperature (eg. frozen food), respectively.
• In addition to the refrigerants listed, there are many
other products on the market that do not have an
R-number. Similarly, many of the refrigerants listed
are marketed under trade names, rather than the
R-number.
• Systems using carbon dioxide systems need to be
designed with particular respect to its thermodynamic
characteristics.
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