Operating and Temperature Pressures
Minor variations in these pressures may be expected due to differences in installations. Significant differences could mean that the system is not properly charged or that a problem exists with some component in the system.
Table 4. Normal Operating Pressures (Liquid +10 and Suction +5 psig)*
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| Use this table to perform maintenance checks; it is not a procedure for charging the | |||||||||||||
IMPORTANT | 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 | ||||||||||||||||||
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| problem exists with some component in the system. |
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Model |
| −024 |
| −030 |
| −036 |
| −042 |
| −048 |
| −060 | ||||||
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°F (°C)** | Liquid |
| Suction | Liquid | Suction | Liquid |
| Suction | Liquid |
| Suction | Liquid |
| Suction | Liquid |
| Suction | |
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65 (18.3) | 234 |
| 139 | 236 |
| 134 | 226 |
| 134 | 232 |
| 137 | 232 |
| 132 | 236 |
| 131 |
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70 (21.1) | 249 |
| 140 | 251 |
| 135 | 245 |
| 135 | 249 |
| 139 | 249 |
| 133 | 254 |
| 132 |
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75 (23.9) | 268 |
| 141 | 271 |
| 138 | 266 |
| 137 | 270 |
| 140 | 268 |
| 134 | 273 |
| 133 |
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80 (26.7) | 289 |
| 142 | 291 |
| 139 | 287 |
| 138 | 291 |
| 141 | 288 |
| 135 | 294 |
| 135 |
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85 (29.4) | 310 |
| 142 | 312 |
| 140 | 310 |
| 139 | 314 |
| 142 | 311 |
| 136 | 317 |
| 136 |
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90 (32.2) | 334 |
| 144 | 335 |
| 142 | 333 |
| 140 | 338 |
| 143 | 333 |
| 137 | 340 |
| 137 |
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95 (35.0) | 358 |
| 145 | 358 |
| 142 | 358 |
| 141 | 363 |
| 144 | 357 |
| 138 | 364 |
| 139 |
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100 (37.8) | 383 |
| 146 | 383 |
| 143 | 383 |
| 143 | 389 |
| 145 | 380 |
| 139 | 389 |
| 140 |
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105 (40.6) | 408 |
| 147 | 409 |
| 144 | 410 |
| 144 | 419 |
| 147 | 406 |
| 140 | 416 |
| 142 |
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110 (43.3) | 436 |
| 148 | 436 |
| 145 | 437 |
| 145 | 447 |
| 148 | 433 |
| 142 | 444 |
| 143 |
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115 (46.1) | 465 |
| 150 | 467 |
| 147 | 464 |
| 146 | 480 |
| 149 | 462 |
| 143 | 475 |
| 145 |
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*Typical pressures only, expressed in psig (liquid +/− 10 and vapor+/− 5 psig); indoor match up, indoor air quality, and indoor load will cause the pressures to vary. These operating pressures are also listed on the unit charging sticker (580005−01) located on the access panel.
** Temperature of air entering outdoor coil.
Table 5. HFC−410A Temperature (° Fahrenheit)
°F | Psig | °F | Psig | °F | Psig | °F | Psig | °F | Psig | °F | Psig | °F | Psig | °F | Psig |
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32 | 100.8 | 48 | 137.1 | 63 | 178.5 | 79 | 231.6 | 94 | 290.8 | 110 | 365.0 | 125 | 445.9 | 141 | 545.6 |
33 | 102.9 | 49 | 139.6 | 64 | 181.6 | 80 | 235.3 | 95 | 295.1 | 111 | 370.0 | 126 | 451.8 | 142 | 552.3 |
34 | 105.0 | 50 | 142.2 | 65 | 184.3 | 81 | 239.0 | 96 | 299.4 | 112 | 375.1 | 127 | 457.6 | 143 | 559.1 |
35 | 107.1 | 51 | 144.8 | 66 | 187.7 | 82 | 242.7 | 97 | 303.8 | 113 | 380.2 | 128 | 463.5 | 144 | 565.9 |
36 | 109.2 | 52 | 147.4 | 67 | 190.9 | 83 | 246.5 | 98 | 308.2 | 114 | 385.4 | 129 | 469.5 | 145 | 572.8 |
37 | 111.4 | 53 | 150.1 | 68 | 194.1 | 84 | 250.3 | 99 | 312.7 | 115 | 390.7 | 130 | 475.6 | 146 | 579.8 |
38 | 113.6 | 54 | 152.8 | 69 | 197.3 | 85 | 254.1 | 100 | 317.2 | 116 | 396.0 | 131 | 481.6 | 147 | 586.8 |
39 | 115.8 | 55 | 155.5 | 70 | 200.6 | 86 | 258.0 | 101 | 321.8 | 117 | 401.3 | 132 | 487.8 | 148 | 593.8 |
40 | 118.0 | 56 | 158.2 | 71 | 203.9 | 87 | 262.0 | 102 | 326.4 | 118 | 406.7 | 133 | 494.0 | 149 | 601.0 |
41 | 120.3 | 57 | 161.0 | 72 | 207.2 | 88 | 266.0 | 103 | 331.0 | 119 | 412.2 | 134 | 500.2 | 150 | 608.1 |
42 | 122.6 | 58 | 163.9 | 73 | 210.6 | 89 | 270.0 | 104 | 335.7 | 120 | 417.7 | 135 | 506.5 | 151 | 615.4 |
43 | 125.0 | 59 | 166.7 | 74 | 214.0 | 90 | 274.1 | 105 | 340.5 | 121 | 423.2 | 136 | 512.9 | 152 | 622.7 |
44 | 127.3 | 60 | 169.6 | 75 | 217.4 | 91 | 278.2 | 106 | 345.3 | 122 | 428.8 | 137 | 519.3 | 153 | 630.1 |
45 | 129.7 | 61 | 172.6 | 76 | 220.9 | 92 | 282.3 | 107 | 350.1 | 123 | 434.5 | 138 | 525.8 | 154 | 637.5 |
46 | 132.2 | 62 | 175.4 | 77 | 224.4 | 93 | 286.5 | 108 | 355.0 | 124 | 440.2 | 139 | 532.4 | 155 | 645.0 |
47 | 134.6 |
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| 78 | 228.0 |
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| 109 | 360.0 |
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| 140 | 539.0 |
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Page 30
506510−01
