Manual 2100-790
Page
37 of 49
TABLE 11A
Cooling Pressure
Air Temperature Entering Outdoor Coil °F
Model
Return Air Temp
(DB/WB)
Pressure
75
80
85
90
95
100
105
110
115
120
125
131
W18HY
75/62
Low Side
High Side
124
294
126
315
129
337
131
359
133
383
136
408
138
434
140
461
142
488
144
517
146
546
149
583
80/67
Low Side
High Side
132
301
135
323
138
345
140
369
143
393
145
419
147
445
150
472
152
501
154
530
157
560
159
598
85/72
Low Side
High Side
137
312
140
334
142
357
145
382
148
407
150
433
153
461
155
489
157
518
160
548
162
580
165
619
W24HY
75/62
Low Side
High Side
121
298
125
319
128
341
131
365
133
389
135
414
137
440
139
467
141
495
142
524
143
554
144
591
80/67
Low Side
High Side
130
306
133
328
137
350
140
374
142
399
145
424
147
451
149
479
151
508
152
537
153
568
154
606
85/72
Low Side
High Side
134
317
138
339
141
363
145
387
147
413
150
439
152
467
154
496
156
525
157
556
159
588
160
628
W30HY
75/62
Low Side
High Side
133
320
135
337
136
356
138
377
139
400
141
426
143
453
144
482
146
513
148
547
150
582
153
627
80/67
Low Side
High Side
143
328
144
346
146
365
147
387
149
411
151
437
152
465
154
495
156
527
158
561
161
597
163
644
85/72
Low Side
High Side
148
340
149
358
151
378
152
400
154
425
156
452
158
481
160
512
162
545
164
581
166
618
--*
W36HY
75/62
Low Side
High Side
129
322
131
344
133
366
135
390
137
414
139
440
140
466
142
493
144
522
145
552
147
582
148
620
80/67
Low Side
High Side
138
330
140
352
142
375
145
400
146
425
148
451
150
478
152
506
154
535
155
566
157
597
159
636
85/72
Low Side
High Side
143
342
145
365
147
389
150
414
152
440
154
467
156
495
157
524
159
554
161
585
162
618
--*
TABLE 11B
Heating Pressure
Air Temperature Entering Outdoor Coil °F
Model Indoor
Heating
0
5
10
15
17
20
25
30
35
40
45
47
50
55
60
65
W18HY
70
Suction Pressure
Head Pressure
41.70
243.00
48.00
250.20
54.50
257.70
61.20
265.40
64.00
268.50
68.20
273.30
75.40
281.40
82.90
289.80
90.70
298.40
98.60
307.20
106.90
316.20
110.20
319.90
115.30
325.50
124.00
335.00
133.00
344.70
142.20
354.70
W24HY
70
Suction Pressure
Head Pressure
39.10
255.50
45.10
264.90
51.30
274.30
57.70
283.60
60.40
287.30
64.40
292.90
71.40
302.10
78.60
311.30
86.10
320.50
93.80
329.70
101.80
338.80
105.10
342.40
110.10
347.80
118.60
356.90
127.40
365.90
136.40
374.80
W30HY
70
Suction Pressure
Head Pressure
39.40
254.60
45.50
260.70
51.80
267.10
58.40
273.70
61.00
276.40
65.10
280.60
72.00
287.70
79.10
295.10
86.50
302.80
94.00
310.70
101.70
318.90
104.90
322.20
109.70
327.30
117.80
336.00
126.20
344.90
134.70
354.20
W36HY
70
Suction Pressure
Head Pressuree
39.50
289.40
44.80
293.90
50.40
298.90
56.30
304.60
58.50
307.10
62.50
310.90
69.00
317.80
75.80
325.40
82.90
333.50
90.30
342.20
98.00
351.60
101.20
355.50
106.00
361.50
114.30
372.10
122.90
383.30
131.70
395.10
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 28.
* Operating at these conditions would be outside the compressor operating envelope and is not recommended.
