16
Adjust refrigerant level to attain proper gage pressure.
5.
Add refrigerant if the design liquid line pressure is lower than the
chart value.
Connect gages to refrigerant bottle and unit as illustrated (Figure
40).
Purge all hoses.
Open bottle.
Stop adding refrigerant when liquid line pressure matches the
Refrigerant Charging Chart.
Recover refrigerant if the design liquid line pressure is lower than
the chart value.
Figure 40
Stabilize the system.
Wait 20 minutes for the system condition to stabilize between
adjustments.
Remove gages.
Replace service port caps to prevent leaks. Tighten finger tight plus
an additional 1/6 turn.
6.
Record system Information for reference (Table 8).
Record system pressures and temperatures after charging is
complete.
7.
When the liquid line pressure match the chart, the system is
properly charged.
20 MIN.
Figure 41
Description Value
Outdoor model number
Measured Outdoor Ambient °F
Measured Indoor Ambient °F
Liquid Gage Pressure PSIG
Suction Gage Pressure PSIG
Table 8
55 60 65 70 75 80 85 90 95 100 105 110 115
165
161
157
153
149
145
141
137
133
129
125
121
117
113
109
105
Suction Pressure at
Large Service Valve(psig)
Cooling
Mode
Outdoor Ambient Temperature(
℉
)
Liquid Pressure at Small Service Valve(psig)
14SEER R410A HP Charge Chart 4 TON(Cooling mode)
55 60 65 70 75 80 85 90 95 100 105 110 115
165
161
157
153
149
145
141
137
133
129
125
121
117
113
109
105
Suction Pressure at
Large Service Valve(psig)
Cooling
Mode
Outdoor Ambient Temperature(
℉
)
Liquid Pressure at Small Service Valve(psig)
14SEER R410A HP Charge Chart 5 TON(Cooling mode)
255 273 291 310 330 351 371 396 420 445 469
253 271 289 308 328 349 369 394 418 443 467
251 269 287 306 326 347 367 392 416 441 465
231 249 267 285 304 324 345 365 390 414 439 463
229 247 265 283 302 322 343 363 388 412 437 461
227 245 263 281 300 320 341 361 386 410 435 459
206 225 243 261 279 298 318 339 359 384 408 433 457
204 223 241 259 277 296 316 337 357 382 406 431 455
204 222 240 258 275 294 314 335 355 380 404 429 453
202 220 238 256 273 292 312 333 353 378 402 427 451
200 218 236 254 271 290 310 331 351 376 400 425
449
198 216 234 252 269 288 308 329 349 374 398 423 447
196 214 232 250 267 286 306 327 347 372 396 421 445
194 212 230 248 265 284 304 325 345 370 394 419 443
192 210 228 246 263 282 302 323 343 368 392 417 441
190 208 226 244 261 280 300 321 341 366 390 415 439
254 274 291 309 329 350 370 398 421 447 472
252 271 289 306 327 348 368 396 419 445 470
250 268 287 304 325 346 366 394 417 443 468
229 248 266 285 302 323 344 364 392 415 441 466
227 246 264 283 300 321 342 362 390 413 439 464
225 244 262 281 298 319 340 360 388 411 4
37 462
205 224 242 260 279 296 317 338 358 386 409 435 460
202 222 240 258 277 294 315 336 356 384 407 433 458
199 220 238 256 275 292 313 334 354 382 405 431 456
197 218 236 254 273 290 311 332 352 380 403 429 454
195 216 234 252 271 288 310 330 350 378 401 427 452
193 214 232 250 269 286 308 328 348 376 399 425 450
191 212 230 248 267 284 306 326 346 374 397 423 448
189 210 228 246 265 282 304 324 344 372 395 421 446
187 208 226 244 263 280 302 322 342 370 393 419 444
185 206 224 242 261 278 300 320 340 368 391 417 442