R410A Temperature/Pressure Chart
Subcooling Values
| T e m p . | P re s s u re |
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| (F | P s ig |
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| 3 2 | 1 0 0 . 8 |
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| 3 3 | 1 0 2 . 9 |
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| 3 4 | 1 0 5 . 0 |
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| 3 5 | 1 0 7 . 1 |
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| 3 6 | 1 0 9 . 2 |
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| 3 7 | 1 1 1 . 4 |
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| 3 8 | 1 1 3 . 6 |
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| 3 9 | 1 1 5 . 8 |
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| 4 0 | 1 1 8 . 0 |
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| 4 1 | 1 2 0 . 3 |
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| 4 2 | 1 2 2 . 6 |
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| 4 3 | 1 2 5 . 0 |
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| 4 4 | 1 2 7 . 3 |
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| 4 5 | 1 2 9 . 7 |
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| 4 6 | 1 3 2 . 2 |
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| 4 7 | 1 3 4 . 6 |
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| 4 8 | 1 3 7 . 1 |
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| 4 9 | 1 3 9 . 6 |
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| 5 0 | 1 4 2 . 2 |
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| 5 1 | 1 4 4 . 8 |
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| 5 2 | 1 4 7 . 4 |
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| 5 3 | 1 5 0 . 1 |
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| 5 4 | 1 5 2 . 8 |
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| 5 5 | 1 5 5 . 5 |
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| 5 6 | 1 5 8 . 2 |
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| 5 7 | 1 6 1 . 0 |
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| 5 8 | 1 6 3 . 9 |
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| 5 9 | 1 6 6 . 7 |
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| 6 0 | 1 6 9 . 6 |
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| 6 1 | 1 7 2 . 6 |
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| 6 2 | 1 7 5 . 5 |
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| 6 3 | 1 7 8 . 5 |
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| 6 4 | 1 8 1 . 6 |
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| 6 5 | 1 8 4 . 3 |
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| 6 6 | 1 8 7 . 7 |
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| 6 7 | 1 9 0 . 9 |
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| 6 8 | 1 9 4 . 1 |
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| 6 9 | 1 9 7 . 3 |
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| 7 0 | 2 0 0 . 6 |
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| 7 1 | 2 0 3 . 9 |
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| 7 2 | 2 0 7 . 2 |
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| 7 3 | 2 1 0 . 6 |
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| 7 2 | 2 0 7 . 2 |
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| 7 3 | 2 1 0 . 6 |
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T e m p . | P re s s u re |
(F | P s ig |
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7 4 | 2 1 4 . 0 |
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7 5 | 2 1 7 . 4 |
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7 6 | 2 2 0 . 9 |
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7 7 | 2 2 4 . 4 |
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7 8 | 2 2 8 . 0 |
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7 9 | 2 3 1 . 6 |
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8 0 | 2 3 5 . 3 |
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8 1 | 2 3 9 . 0 |
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8 2 | 2 4 2 . 7 |
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8 3 | 2 4 6 . 5 |
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8 4 | 2 5 0 . 3 |
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8 5 | 2 5 4 . 1 |
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8 6 | 2 5 8 . 0 |
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8 7 | 2 6 2 . 0 |
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8 8 | 2 6 6 . 0 |
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8 9 | 2 7 0 . 0 |
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9 0 | 2 7 4 . 1 |
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9 1 | 2 7 8 . 2 |
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9 2 | 2 8 2 . 3 |
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9 3 | 2 8 6 . 5 |
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9 4 | 2 9 0 . 3 |
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9 5 | 2 9 5 . 1 |
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9 6 | 2 9 9 . 4 |
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9 7 | 3 0 3 . 8 |
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9 8 | 3 0 8 . 2 |
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9 9 | 3 1 2 . 7 |
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1 0 0 | 3 1 7 . 2 |
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1 0 1 | 3 2 1 . 8 |
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1 0 2 | 3 2 6 . 4 |
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1 0 3 | 3 3 1 . 0 |
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1 0 4 | 3 3 5 . 7 |
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1 0 5 | 3 4 0 . 5 |
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1 0 6 | 3 4 5 . 3 |
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1 0 7 | 3 5 0 . 1 |
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1 0 8 | 3 5 5 . 0 |
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1 0 9 | 3 6 0 . 0 |
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1 1 0 | 3 6 5 . 0 |
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1 1 1 | 3 7 0 . 0 |
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1 1 2 | 3 7 5 . 1 |
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1 1 3 | 3 8 0 . 2 |
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1 1 4 | 3 8 5 . 4 |
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1 1 5 | 3 9 0 . 7 |
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1 1 4 | 3 8 5 . 4 |
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1 1 5 | 3 9 0 . 7 |
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T e m p . | P re s s u re |
(F | P s ig |
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1 1 6 | 3 9 6 . 0 |
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1 1 7 | 4 0 1 . 3 |
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1 1 8 | 4 0 6 . 7 |
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1 1 9 | 4 1 2 . 2 |
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1 2 0 | 4 1 7 . 7 |
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1 2 1 | 4 2 3 . 2 |
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1 2 2 | 4 2 8 . 8 |
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1 2 3 | 4 3 4 . 5 |
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1 2 4 | 4 4 0 . 2 |
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1 2 5 | 4 4 5 . 9 |
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1 2 6 | 4 5 1 . 8 |
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1 2 7 | 4 5 7 . 6 |
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1 2 8 | 4 6 3 . 5 |
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1 2 9 | 4 6 9 . 5 |
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1 3 0 | 4 7 5 . 6 |
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1 3 1 | 4 8 1 . 6 |
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1 3 2 | 4 8 7 . 8 |
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1 3 3 | 4 9 4 . 0 |
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1 3 4 | 5 0 0 . 2 |
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1 3 5 | 5 0 6 . 5 |
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1 3 6 | 5 1 2 . 9 |
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1 3 7 | 5 1 9 . 3 |
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1 3 8 | 5 2 5 . 8 |
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1 3 9 | 5 3 2 . 4 |
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1 4 0 | 5 3 9 . 0 |
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1 4 1 | 5 4 5 . 6 |
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1 4 2 | 5 5 2 . 3 |
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1 4 3 | 5 5 9 . 1 |
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1 4 4 | 5 6 5 . 9 |
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1 4 5 | 5 7 2 . 8 |
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1 4 6 | 5 7 9 . 8 |
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1 4 7 | 5 8 6 . 8 |
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1 4 8 | 5 9 3 . 8 |
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1 4 9 | 6 0 1 . 0 |
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1 5 0 | 6 0 8 . 1 |
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1 5 1 | 6 1 5 . 4 |
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1 5 2 | 6 2 2 . 7 |
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1 5 3 | 6 3 0 . 1 |
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1 5 4 | 6 3 7 . 5 |
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1 5 5 |
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6 4 5 . 0 | |
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Table 6
° Liquid Line Temperature °F
_
° Outdoor Ambient Temperature °F
=° Approach Temperature °F
6.Compare the approach value with those shown in Table
7.If the values do not agree with those provided in Table 7, add refrigerant to lower the approach temperature or recover refrigerant from the system to increase the approach temperature.
Check Charge Using Normal Operating Pressures Use Table 8 to perform maintenance checks. Table 8 is not a procedure for charging the system. Minor variations in these pressures may be due to differences in installations. Significant deviations could mean that the system is not properly charged or that a problem exists with some component in the system.
Approach Values for TXV Systems
Approach value is the liquid line temperature minus the outdoor ambient temperature (± 1°F).
Note: For best results, use the same digital thermometer to check both outdoor ambient and liquid temperatures.
Table 7
Table 5
Issue 1008 | Page 14 |
