Manual 2100-588A
Page 22 of 29
TABLE 4
COOLING PRESSURE TABLE
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, 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”.
Model
Return Air Temp
(DB/WB)
Pressure
75
80
85
90
95
100
105
110
115
120
J17A/L
75/62
Low Side
High Side
124
321
126
340
128
362
130
384
132
409
133
434
135
461
137
490
138
521
140
553
80/67
Low Side
High Side
133
329
135
349
137
371
139
394
141
419
142
445
144
473
146
503
148
534
150
567
85/72
Low Side
High Side
138
341
140
361
142
384
144
408
146
434
147
461
149
490
151
521
153
553
155
587
J24A/L
75/62
Low Side
High Side
119
340
121
361
122
383
124
407
127
432
129
459
131
488
133
518
135
550
137
583
80/67
Low Side
High Side
127
349
129
370
131
393
133
417
136
443
138
471
140
500
142
531
144
564
146
598
85/72
Low Side
High Side
131
361
134
383
136
407
138
432
141
459
143
487
145
518
147
550
149
584
151
619
J30A/L
75/62
Low Side
High Side
122
335
124
358
127
381
129
406
131
431
133
456
135
483
137
509
137
536
139
565
80/67
Low Side
High Side
130
344
133
367
136
391
138
416
140
442
142
468
144
495
146
522
147
550
149
579
85/72
Low Side
High Side
135
356
138
380
141
405
143
431
145
457
147
484
149
512
151
540
152
569
154
599
J36A/L
75/62
Low Side
High Side
120
339
122
366
124
392
126
418
129
446
130
473
132
501
134
529
135
558
136
586
80/67
Low Side
High Side
128
348
130
375
133
402
135
429
138
457
139
485
141
514
143
543
144
572
145
601
85/72
Low Side
High Side
132
360
135
388
138
416
140
444
143
473
144
502
146
532
148
562
149
592
150
622
J42A/L
75/62
Low Side
High Side
123
320
124
342
126
367
128
391
130
416
132
443
134
469
136
496
137
526
139
554
80/67
Low Side
High Side
132
328
133
351
135
376
137
401
139
427
141
454
143
481
145
509
147
539
149
568
85/72
Low Side
High Side
137
339
138
363
140
389
142
415
144
442
146
470
148
498
150
527
152
558
154
588
J48A/L
75/62
Low Side
High Side
117
355
119
378
121
403
123
427
125
454
127
482
129
510
131
539
133
570
135
603
80/67
Low Side
High Side
125
364
127
388
129
413
132
438
134
466
136
494
138
523
140
553
142
585
144
618
85/72
Low Side
High Side
129
377
131
402
134
427
137
453
139
482
141
511
143
541
145
572
147
605
149
640
J60A/L
75/62
Low Side
High Side
122
346
124
371
126
396
128
421
130
447
131
473
133
499
135
526
137
553
138
580
80/67
Low Side
High Side
131
355
133
380
135
406
137
432
139
458
140
485
142
512
144
539
146
567
148
595
85/72
Low Side
High Side
136
367
138
393
140
420
142
447
144
474
145
502
147
530
149
558
151
587
153
616
J70A/L
75/62
Low Side
High Side
118
349
121
371
122
395
123
419
125
444
127
470
129
497
131
525
132
553
134
583
80/67
Low Side
High Side
126
358
129
381
131
405
132
430
134
455
136
482
138
510
140
538
141
567
143
598
85/72
Low Side
High Side
130
371
134
394
136
419
137
445
139
471
141
499
143
528
145
557
146
587
148
619