Mitsubishi Electric R410A Manual page 9

R410A has zero O zone Depletion Potential (O DP)
W ith the relatively high density and high efficiency of R410A , it is possible to reduce
the size of system components such as condensers, compressors, evaporators and
piping, etc. As operating pressures are higher compared to that of R22 and R407c,
all system components must all be designed for suitability with R410A.
R22
Suction 60psi
Discharge 260psi
W hen installing equipment using R410A refrigerant, there are a number of standards
that must be met:
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An ester oil is used for R410A (as with R407c)
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It•s important to work with absolute cleanliness
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Brazing must be done with the use of N itrogen (O FN )
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The system must be evacuated thoroughly (triple evacuation)
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A strength test in accordance with local code
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The system must always be charged in the liquid phase
R410A
90 to 105 psi
350 to 400 psi
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