Manual 2100-631
Page
51 of 53
36. REFRIGERANT CHARGE
The correct system R-410A charge is shown on the unit
rating plate.
You can reference Table 17 to validate proper system
operation (+2 psig suction, +5 psig discharge). However,
it is recommended that if incorrect charge is suspected,
the system refrigerant be reclaimed, evacuated and
charged to the nameplate charge quantity and type.
TABLE 17
REFRIGERANT CHARGE – PRESSURE TABLE
The nameplate charge quantity is optimized for thermal
performance and efficiency of this self-contained
package system.
The system operating pressures in Table 17 are based
upon rated airflow across the evaporator during cooling
cycle.
Total system charge for these models can be found in
Table 1.
Low side pressure ± 4 PSIG
High side pressure ± 10 PSIG
Tables 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 reclaimed, system
evacuated and recharged to serial plate instruction.
Model
Return Air
Temperature
Pressure
65°
70°
75°
80°
85°
90°
95°
100° 105° 110° 115° 120° 125°
W24G3D
75° DB
62° WB
Low Side
High Side
108
250
111
273
115
296
118
319
121
342
124
364
127
387
129
415
131
442
134
469
136
497
138
524
140
552
80° DB
67° WB
Low Side
High Side
123
258
126
282
129
305
131
329
134
352
137
376
140
401
142
427
145
456
147
484
149
512
152
540
155
569
85° DB
72° WB
Low Side
High Side
136
268
139
292
141
316
144
340
147
363
150
387
153
411
156
440
158
469
161
498
164
527
166
556
169
585
W30G3D
75° DB
62° WB
Low Side
High Side
113
262
116
287
119
311
122
335
125
359
128
383
131
407
133
435
134
463
136
491
138
519
139
547
141
575
80° DB
67° WB
Low Side
High Side
129
271
131
296
134
321
137
345
139
370
142
395
145
411
146
449
148
477
150
506
152
535
154
564
156
592
85° DB
72° WB
Low Side
High Side
142
282
145
307
147
332
150
357
153
382
155
407
158
432
160
461
162
491
164
521
166
550
168
580
170
609
W36G3D
75° DB
62° WB
Low Side
High Side
115
271
120
291
123
311
127
332
130
356
133
380
136
406
137
433
139
461
140
490
141
522
141
554
141
588
80° DB
67° WB
Low Side
High Side
123
278
128
298
132
319
136
341
139
365
142
390
145
416
147
444
149
473
150
503
151
535
151
568
151
603
85° DB
72° WB
Low Side
High Side
127
288
132
308
137
330
141
353
144
378
147
404
150
431
152
460
154
490
155
521
156
554
156
588
156
624
W42G3D
75° DB
62° WB
Low Side
High Side
126
287
126
304
127
324
128
344
129
367
130
391
131
416
132
444
133
472
135
503
137
534
137
568
139
604
80° DB
67° WB
Low Side
High Side
135
294
135
312
136
332
137
353
138
376
139
401
140
427
141
455
142
484
144
516
146
548
147
583
149
619
85° DB
72° WB
Low Side
High Side
140
304
140
323
141
344
142
365
143
389
144
415
145
442
146
471
147
501
149
534
151
567
152
603
154
641
W48G3D
75° DB
62° WB
Low Side
High Side
130
276
130
296
131
317
132
339
133
363
134
387
135
412
136
439
137
467
138
495
140
526
142
556
144
588
80° DB
67° WB
Low Side
High Side
139
283
139
304
140
325
141
348
142
372
143
397
144
423
145
450
147
479
148
508
150
539
152
570
154
603
85° DB
72° WB
Low Side
High Side
144
293
144
315
145
336
146
360
147
385
148
411
149
438
150
466
152
496
153
526
155
558
157
590
159
624
W60G3D
75° DB
62° WB
Low Side
High Side
122
282
123
302
125
324
126
346
128
370
129
395
131
420
132
447
134
475
135
504
137
533
138
565
139
597
80° DB
67° WB
Low Side
High Side
131
289
132
310
134
332
135
355
137
379
138
405
140
431
141
458
143
487
144
517
146
547
148
579
149
612
85° DB
72° WB
Low Side
High Side
136
299
137
321
139
344
140
367
142
392
143
419
145
446
146
474
148
504
149
535
151
566
153
599
154
633