Refrigerant Charging tables
Shaded boxes indicate flooded conditions.
Rated design values. The suction pressure will vary from design value if indoor air flow, entering dry bulb, or entering wet bulb temperatures are lower than design.
1.All pressures are listed in psig and all temperatures in ° F
2.Discharge temperatures greater than charted values indicate an undercharged system.
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| OUTDOOR TEMPERATURE (° F) |
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Suct. | 70 |
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| 75 |
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| 80 |
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| 85 |
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| 90 |
| 95 |
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| 100 |
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| 105 | |||||||||||
Press. |
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Liq. |
| Dis. |
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| Liq. |
| Dis. |
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| Liq. |
| Dis. |
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| Liq. |
| Dis. |
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| Liq. |
| Dis. | Liq. |
| Dis. |
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| Liq. |
| Dis. |
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| Liq. |
| Dis. | |
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| Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | ||||||||||||||||||||
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68 | 139 |
| 94 |
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70 | 142 |
| 100 |
| 158 |
| 108 |
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72 | 144 |
| 105 |
| 160 |
| 113 |
| 176 |
| 120 |
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74 | 142 |
| 118 |
| 162 |
| 118 |
| 178 |
| 125 |
| 194 |
| 133 |
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76 | 145 |
| 121 |
| 161 |
| 127 |
| 180 |
| 130 |
| 196 |
| 137 |
| 212 |
| 144 |
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78 |
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| 165 |
| 130 |
| 180 |
| 137 |
| 198 |
| 142 |
| 214 |
| 149 | 230 |
| 156 |
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80 |
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| 184 |
| 140 |
| 199 |
| 147 |
| 216 |
| 153 | 232 |
| 160 |
| 248 |
| 167 |
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82 |
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| 203 |
| 151 |
| 218 |
| 158 | 234 |
| 164 |
| 250 |
| 171 |
| 266 |
| 178 | ||||
84 |
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| 206 |
| 154 |
| 222 |
| 161 | 237 |
| 168 |
| 252 |
| 175 |
| 268 |
| 182 | ||||
86 |
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| 225 |
| 165 | 241 |
| 173 |
| 256 |
| 180 |
| 270 |
| 186 | |||
88 |
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| 244 |
| 177 |
| 260 |
| 184 |
| 275 |
| 191 | ||
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90 |
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| 263 |
| 188 |
| 279 |
| 196 | ||
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92 |
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| 282 |
| 200 | |
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94 |
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Table 6. Charging Table for 2.5 Ton Units (with Microchannel Coil)
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| OUTDOOR TEMPERATURE (° F) |
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Suct. | 70 |
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| 75 |
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| 80 |
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| 85 |
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| 90 |
| 95 |
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| 100 |
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| 105 | |||||||||||
Press. |
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Liq. |
| Dis. |
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| Liq. |
| Dis. |
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| Liq. |
| Dis. |
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| Liq. |
| Dis. |
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| Liq. |
| Dis. | Liq. |
| Dis. |
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| Liq. |
| Dis. |
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| Liq. |
| Dis. | |
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| Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | Press. | Temp. | ||||||||||||||||||||
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69 | 147 |
| 99 |
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71 | 150 |
| 105 |
| 167 |
| 113 |
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73 | 152 |
| 110 |
| 169 |
| 118 |
| 186 |
| 126 |
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75 | 150 |
| 124 |
| 171 |
| 123 |
| 188 |
| 131 |
| 205 |
| 139 |
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77 | 153 |
| 126 |
| 170 |
| 133 |
| 190 |
| 136 |
| 207 |
| 144 |
| 224 |
| 151 |
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79 |
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| 174 |
| 136 |
| 190 |
| 143 |
| 209 |
| 148 |
| 226 |
| 156 | 243 |
| 163 |
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81 |
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| 194 |
| 146 |
| 210 |
| 153 |
| 228 |
| 160 | 245 |
| 168 |
| 262 |
| 175 |
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83 |
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| 214 |
| 157 |
| 230 |
| 164 | 247 |
| 172 |
| 264 |
| 179 |
| 281 |
| 186 | ||||
85 |
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| 217 |
| 161 |
| 234 |
| 168 | 251 |
| 176 |
| 266 |
| 183 |
| 283 |
| 190 | ||||
87 |
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| 237 |
| 172 | 254 |
| 180 |
| 271 |
| 187 |
| 285 |
| 194 | |||
89 |
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| 257 |
| 184 |
| 274 |
| 192 |
| 291 |
| 199 | ||
91 |
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| 277 |
| 196 |
| 294 |
| 204 | ||
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93 |
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| 297 |
| 208 | |
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95 |
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Table 7. Charging Table for 3 Ton Units (with Microchannel Coil)
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