Manual 2100-586D
Page
21 of 25
TABLE 5A
COOLING PRESSURE TABLE
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”.
TABLE 5B
HEATING PRESSURES – (ALL TEMPERATURES °F)
COOLING
AIR TEMPERATURE ENTERING OUTDOOR COIL °F
MODEL
RETURN AIR
TEMPERATURE PRESSURE
75°F
80°F
85°F
90°F
95°F
100°F
105°F
110°F
115°F
120°F
C24H
75° DB
62° WB
LOW SIDE
HIGH SIDE
134
288
137
309
138
331
141
353
144
377
146
402
148
427
151
454
152
482
154
510
80° DB
67° WB
LOW SIDE
HIGH SIDE
143
295
146
317
148
339
151
362
154
387
156
412
158
438
161
466
163
494
165
523
85° DB
72° WB
LOW SIDE
HIGH SIDE
148
305
151
328
153
351
156
375
159
401
161
426
164
453
167
482
169
511
171
541
C30H
75° DB
62° WB
LOW SIDE
HIGH SIDE
129
303
131
328
133
353
135
378
136
405
137
431
138
457
139
485
141
513
142
541
80° DB
67° WB
LOW SIDE
HIGH SIDE
138
311
140
336
142
362
144
388
145
415
147
442
148
469
149
497
151
526
152
555
85° DB
72° WB
LOW SIDE
HIGH SIDE
143
322
145
348
147
375
149
402
150
430
152
457
153
485
154
514
156
544
157
574
C36H
75° DB
62° WB
LOW SIDE
HIGH SIDE
134
305
135
326
137
348
137
372
139
399
140
427
141
458
143
490
145
526
146
563
80° DB
67° WB
LOW SIDE
HIGH SIDE
143
313
144
334
146
357
147
382
149
409
150
438
151
470
153
503
155
539
156
577
85° DB
72° WB
LOW SIDE
HIGH SIDE
148
324
149
346
151
369
152
395
154
423
155
453
156
486
158
521
160
558
161
597
C42H
75° DB
62° WB
LOW SIDE
HIGH SIDE
133
302
133
321
133
341
134
365
136
391
137
418
138
449
141
481
143
516
146
553
80° DB
67° WB
LOW SIDE
HIGH SIDE
142
310
142
329
142
350
143
374
145
401
146
429
148
460
151
493
153
529
156
567
85° DB
72° WB
LOW SIDE
HIGH SIDE
147
321
147
341
147
362
148
387
150
415
151
444
153
476
156
510
158
548
161
587
C48H
75° DB
62° WB
LOW SIDE
HIGH SIDE
137
315
137
336
138
360
139
385
141
412
142
442
143
473
145
506
147
541
148
578
80° DB
67° WB
LOW SIDE
HIGH SIDE
147
323
147
345
148
369
149
395
151
423
152
453
153
485
155
519
157
555
158
593
85° DB
72° WB
LOW SIDE
HIGH SIDE
152
334
152
357
153
382
154
409
156
438
157
469
158
502
160
537
162
574
164
614
C60H
75° DB
62° WB
LOW SIDE
HIGH SIDE
135
290
136
313
137
337
137
362
139
387
140
412
143
438
146
464
149
490
152
518
80° DB
67° WB
LOW SIDE
HIGH SIDE
145
297
146
321
147
346
147
371
149
397
150
423
153
449
156
476
159
503
163
531
85° DB
72° WB
LOW SIDE
HIGH SIDE
150
307
151
332
152
358
152
384
154
411
155
438
158
465
161
493
165
521
169
550
HEATING
AIR TEMPERATURE ENTERING OUTDOOR COIL °F
MODEL
RETURN AIR
TEMPERATURE PRESSURE
0°F
5°F
10°F 15°F 20°F 25°F 30°F 35°F 40°F 45°F 50°F 55°F 60°F 65°F
C24H
70° DB
LOW SIDE
HIGH SIDE
25
233
34
242
42
251
50
260
58
269
66
278
74
287
81
296
88
305
95
314
102
322
109
331
115
339
121
348
C30H
70° DB
LOW SIDE
HIGH SIDE
34
261
39
267
45
274
51
281
57
289
64
297
71
307
78
317
86
327
94
338
102
350
110
363
119
376
128
390
C36H
70° DB
LOW SIDE
HIGH SIDE
36
244
42
251
48
259
54
267
61
275
68
283
75
291
83
299
90
307
99
316
107
324
116
333
125
341
135
350
C42H
70° DB
LOW SIDE
HIGH SIDE
37
270
42
274
47
279
52
285
59
293
65
301
73
311
81
322
89
334
98
347
108
361
118
377
128
394
140
411
C48H
70° DB
LOW SIDE
HIGH SIDE
24
240
34
251
43
261
52
271
60
280
68
289
75
297
83
305
89
312
96
318
102
325
108
330
113
336
118
341
C60H
70° DB
LOW SIDE
HIGH SIDE
31
230
40
245
48
259
56
271
64
283
72
293
80
302
88
310
95
317
102
323
109
327
116
331
123
333
130
334
