Manual 2100-720E
Page
32 of 42
TABLE 10A
2nd Stage Cooling Pressures – Standard Airflow
Air Temperature Entering Outdoor Coil °F
Low side pressure ± 4 PSIG
High side pressure ± 10 PSIG
Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the
system, the charge should be removed and system evacuated and recharged to serial plate charge weight.
NOTE:
Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated check condenser fan
wiring. See
Condenser Fan Operation
on page 24.
* Operating at these conditions would be outside the compressor operating envelope and is not recommended.
Model
Return Air Temp
(DB/WB)
Pressure
75
80
85
90
95
100
105
110
115
120
125
131
W3SAC
75/62
Low Side
High Side
125
298
127
318
129
340
131
363
133
387
135
412
136
439
138
466
139
495
140
525
142
556
143
595
80/67
Low Side
High Side
134
305
136
326
138
349
140
372
142
397
144
423
146
450
147
478
149
508
150
539
152
571
153
611
85/72
Low Side
High Side
138
316
141
338
143
361
145
385
147
411
149
438
151
466
152
495
154
526
155
558
157
591
158
632
W4SAC
75/62
Low Side
High Side
126
320
127
343
129
366
130
391
132
417
134
444
136
472
138
501
140
531
143
562
145
594
148
635
80/67
Low Side
High Side
135
328
136
352
138
376
139
401
141
427
143
455
145
484
148
513
150
544
153
576
155
610
159
651
85/72
Low Side
High Side
140
340
141
364
143
389
144
415
146
442
148
471
150
501
153
531
155
563
158
597
161
631
164
674
W5SAC
75/62
Low Side
High Side
125
332
127
352
129
372
130
394
132
417
133
442
135
467
137
494
137
523
139
552
141
582
143
620
80/67
Low Side
High Side
134
341
136
631
138
382
139
404
141
428
142
453
144
479
146
507
147
536
149
566
151
597
153
636
85/72
Low Side
High Side
139
353
141
374
143
395
144
418
146
443
147
469
149
496
151
525
152
555
154
586
156
618
__*
TABLE 10B
1st Stage Cooling Pressures
–
Balanced Climate Airflow
Air Temperature Entering Outdoor Coil °F
Low side pressure ± 4 PSIG
High side pressure ± 10 PSIG
Tables are based upon Balanced Climate CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge
being in the system, the charge should be removed and system evacuated and recharged to serial plate charge weight.
NOTE:
Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated check condenser fan
wiring. See
Condenser Fan Operation
on page 24.
Model
Return Air Temp
(DB/WB)
Pressure
75
80
85
90
95
100
105
110
115
120
125
131
W3SAC
75/62
Low Side
High Side
129
270
130
290
131
311
133
333
134
356
136
380
138
405
140
431
142
459
144
487
146
516
149
553
80/67
Low Side
High Side
137
277
139
298
140
319
142
342
144
365
145
390
147
416
149
443
151
470
154
499
156
530
159
567
85/72
Low Side
High Side
142
287
144
308
145
330
147
354
149
378
150
403
152
430
154
458
157
487
159
517
162
548
165
587
W4SAC
75/62
Low Side
High Side
131
286
132
306
134
327
135
350
137
373
139
397
142
422
144
449
147
476
149
505
152
534
156
571
80/67
Low Side
High Side
140
294
141
314
143
336
145
359
147
382
149
407
151
433
154
460
157
488
160
517
163
548
167
585
85/72
Low Side
High Side
145
304
146
325
148
347
150
371
152
396
154
421
157
448
159
476
162
505
165
536
169
567
173
606
W5SAC
75/62
Low Side
High Side
132
294
133
314
134
334
135
355
137
377
137
401
139
425
140
450
142
477
144
504
146
532
148
567
80/67
Low Side
High Side
141
302
142
322
143
343
144
364
146
387
147
411
149
436
150
462
152
489
154
517
156
546
158
582
85/72
Low Side
High Side
146
313
147
333
148
355
149
377
151
401
152
425
154
451
155
478
157
506
159
535
161
565
164
602
