Lennox International Inc. Merit Series 14ACX Units Air Conditioner User Manual


 
Page 27
14ACX SERIES
Table 4. HFC−410A Normal Operating Pressures (Liquid +10 and Suction +5 psig)
IMPORTANT
Use this table to perform maintenance checks; it 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.
Model −018 −024 −030 −036 −041 −042 −047 −048 −059/−060
**Temp.
5F (5C)
Liquid /
Suction
Liquid /
Suction
Liquid /
Suction
Liquid /
Suction
Liquid /
Suction
Liquid /
Suction
Liquid /
Suction
Liquid /
Suction
Liquid /
Suction
Expansion Valve (TXV)*
65 (18) 230 / 138 225 / 135 226 / 129 238 / 132 233 / 142 236 / 138 233 / 139 238 / 136 239 / 133
70 (21) 244 / 139 242 / 137 241 / 131 254 / 135 239 / 142 253 / 140 252 / 140 256 / 138 258 / 135
75 (24) 265 / 140 260 / 138 259 / 134 273 / 138 256 / 143 273 / 141 272 / 141 277 / 139 278 / 136
80 (27) 286 / 140 282 / 140 281 / 138 293 / 140 278 / 144 296 / 142 294 / 142 299 / 140 300 / 137
85 (29) 307 / 142 304 / 141 301 / 140 316 / 142 299 / 145 318 / 143 315 / 142 320 / 139 323 / 138
90 (32) 330 / 143 326 / 142 324 / 141 340 / 143 321 / 145 341 / 144 338 / 144 343 / 140 346 / 139
95 (35) 351 / 144 351 / 142 348 / 142 366 / 144 343 / 146 366 / 146 361 / 144 369 / 141 370 / 140
100 (38) 380 / 144 376 / 144 372 / 143 392 / 145 366 / 147 392 / 147 387 / 144 395 / 142 396 / 142
105 (41) 407 / 145 403 / 145 399 / 144 420 / 147 389 / 148 417 / 148 413 / 145 422 / 144 415 / 143
110 (43) 436 / 146 433 / 145 428 / 145 449 / 148 421 / 149 445 / 149 442 / 148 450 / 146 449 / 145
115 (45) 466 / 147 463 / 147 456 / 146 480 / 149 452 / 151 475 / 151 465 / 148 481 / 148 476 / 147
Fixed Orifice (RFC)*
65 (18) 232 / 124 228 / 125 229 / 128 241 / 131 228 / 131 248 / 135 232 / 125 240 / 126 244 / 125
70 (21) 248 / 127 244 / 127 243 / 129 258 / 134 245 / 135 266 / 138 249 / 129 260 / 129 263 / 128
75 (24) 267 / 131 261 / 131 261 / 132 277 / 136 263 / 138 285 / 141 268 / 133 281 / 133 281 / 131
80 (27) 286 / 135 284 / 134 284 / 135 298 / 139 284 / 141 305 / 143 286 / 136 301 / 135 303 / 134
85 (29) 307 / 138 303 / 137 305 / 138 321 / 141 306 / 144 327 / 145 312 / 140 324 / 138 324 / 136
90 (32) 328 / 141 325 / 140 327 / 140 342 / 143 327 / 146 349 / 147 332 / 142 346 / 140 347 / 139
95 (35) 351 / 143 347 / 142 349 / 142 366 / 145 348 / 148 372 / 149 357 / 144 371 / 142 370 / 141
100 (38) 375 / 146 370 / 144 372 / 144 392 / 147 372 / 149 396 / 150 379 / 146 395 / 144 394 / 143
105 (41) 400 / 148 394 / 146 396 / 146 416 / 149 395 / 151 421 / 152 406 / 149 420 / 146 418 / 145
110 (43) 426 / 150 420 / 148 422 / 148 446 / 151 424 /153 447 / 153 430 / 150 447 / 148 444 / 146
115 (46) 457 / 153 447 / 150 449 / 150 480 / 152 453 / 155 476 / 154 460 / 152 473 / 150 471 / 147
*Values shown are typical pressures; indoor unit match up, indoor air quality equipment, and indoor load will cause the pressures to vary.
**Temperature of the air entering the outside coil.