Lennox 13ACX

Page 21
13ACX SERIES
Table 3. 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.
13ACX
−018 −024 −030 −036 −042 −048 −060
5F (5C)* Liquid / Suction Liquid / Suction Liquid / Suction Liquid / Suction Liquid / Suction Liquid / Suction Liquid / Suction
Expansion Valve (TXV)
65 (18) 233 / 132 244 / 137 248 / 127 263 / 135 238 /132 235 / 132 241 / 130
70 (21) 251 / 133 263 / 138 263 / 131 281 / 138 262 / 133 254 / 132 260 / 130
75 (24) 265 / 133 285 / 139 284 / 132 302 / 140 280 / 134 276 / 134 280 / 132
80 (27) 292 / 135 307 / 140 307 / 134 325 / 142 301 / 136 298 / 134 299 / 134
85 (29) 314 / 136 329 / 141 330 / 135 349 / 142 327 / 137 323 / 135 321 / 135
90 (32) 338 / 137 354 / 142 355 / 136 375 / 143 353 / 138 350 / 137 344 / 134
95 (35) 362 / 138 379 / 143 380 / 137 404 / 144 377 / 140 377 / 138 371 / 135
100 (38) 388 / 140 404 / 144 407 / 138 433 / 145 404 / 141 406 / 140 400 / 137
105 (41) 415 / 141 438 / 145 434 / 139 462 / 147 435 / 142 430 / 141 428 / 139
110 (43) 444 / 142 464 / 147 465 / 141 494 / 149 465 / 143 464 / 142 458 / 141
115 (45) 475 / 143 495 / 148 497 / 142 527 / 150 499 / 144 495 / 143 484 / 142
Fixed Orifice (RFC)
65 (18) 233 / 121 246 / 126 245 / 123 261 / 134 246 / 126 247 / 125 248 / 124
70 (21) 250 / 124 265 / 129 265 / 126 281 / 136 263 / 128 266 / 128 266 / 126
75 (24) 270 / 128 286 / 132 286 / 129 301 / 138 284 / 131 286 / 131 288 / 130
80 (27) 291 / 131 307 /135 308 / 132 324 / 140 305 / 133 307 / 133 309 / 133
85 (29) 313 / 134 330 / 137 331 / 135 346 / 142 327 / 135 329 / 135 330 / 135
90 (32) 335 / 136 353 / 140 355 / 138 371 / 144 350 / 138 353 / 138 354 / 138
95 (35) 359 / 138 378 / 142 380 / 140 396 / 146 374 / 140 377 / 140 377 / 140
100 (38) 383 / 140 402 / 143 405 / 142 422 / 148 399 / 142 403 / 142 406 / 142
105 (41) 409 / 142 428 / 145 431 / 144 448 / 150 424 / 144 428 / 144 431 / 144
110 (43) 436 / 145 456 / 147 458 / 146 477 / 151 452 / 146 455 / 146 457 / 146
115 (46) 464 / 147 486 / 149 487 / 148 506 / 153 481 / 148 483 / 147 484 / 148
*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.
Table 4. HFC−410A Temperature  Pressure (Psig)
°F °C Psig °F °C Psig
−40 −40.0 11.6 60 15.6 170
−35 −37.2 14.9 65 18.3 185
−30 −34.4 18.5 70 21.1 201
−25 −31.7 22.5 75 23.9 217
−20 −28.9 26.9 80 26.7 235
−15 −26.1 31.7 85 29.4 254
−10 −23.3 36.8 90 32.2 274
−5 −20.6 42.5 95 35.0 295
0 −17.8 48.6 100 37.8 317
5 −15.0 55.2 105 40.6 340
10 −12.2 62.3 110 43.3 365
15 −9.4 70.0 115 46.1 391
20 −6.7 78.3 120 48.9 418
25 −3.9 87.3
125 51.7 446
30 −1.1 96.8 130 54.4 476
35 1.7 107 135 57.2 507
40 4.4 118 140 60.0 539
45 7.2 130
145 62.8 573
50 10.0 142
150 65.6 608
55 12.8 155