16
REFRIGERANT CHARGING CHARTS
Shaded boxes indicate fl ooded conditions.
Rated design values. The suction pressure will vary from design value if outdoor air fl ow, entering dry
bulb, or entering wet bulb temperatures vary.
1. All pressures are listed psig and all temperatures in °F
2. Discharge temperatures greater than charted values indicate an undercharged system.
Refrigerant Charging Chart Legend:
Suct.
Press.
OUTDOOR TEMPERATURE (°F)
70 75 80 85 90 95 100 105
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
137 254 133
139
257 139
276 135
141 259 144
279 140
299 138
143
265 142
281 146
301 142
321 140
145 268 144
286 145
303 147
323 145
343 143
147 290 148
308 149
325 149
345 147
365 145
149 312 152
330 152
347 151
367 149
388 148
151 333 156
351 155
369 154
390 152
410 151
153 337 159 355 159
373 158
392 156
412 155
155 358 163 376 162
395 160
414 159
157 380 166 398 164
416 163
159 401 169 420 167
161 423 171
163
Table 7. Charging Chart for 2.5 Ton Units
Suct.
Press.
OUTDOOR TEMPERATURE (°F)
70 75 80 85 90 95 100 105
Liquid
Press.
Dis
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
134 243 132
136
245 137
265 134
138 247 143
267 139
287 136
140
253 141
269 144
289 140
309 138
142 256 144
274 144
291 145
311 142
331 140
144 278 147
296 147
313 147
333 144
353 142
146 299 151
317 150
335 148
355 146
375 144
148 321 153
339 152
357 150
377 148
397 147
150 324 157 342 156
360 154
379 152
399 150
152 346 160 364 158
382 156
401 154
154 367 163 385 161
404 158
156 389 165 407 163
158 410 167
160
Table 6. Charging Chart for 2 Ton Units