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Installation Instructions
5 Airfl ow Performance
Airfl ow performance data is based on cooling performance with a coil and no fi lter
in place. Check the performance table for appropriate unit size selection.
External static pressure should stay within the minimum and maximum limits
shown in the table below in order to ensure proper operation of both cooling,
heating, and electric heating operation.
Air Handler
Motor Speed
Model Size
Low
Medium
24
(Default)
High
Low
Medium
36
(Default)
High
Low
Medium
48
(Default)
High
Low
Medium
60
(Default)
High
Table 7
Bold outlined areas represent airfl ow outside of the required 300-450 cfm/ton range.
NOTES:
1. The high stage airfl ow must be used as the rated airfl ow for the full load operation of machine.
2. The rated airfl ow of systems without electric heater kits requires between 300 and 450 cubic feet of air per
minute (CFM).
3. The rated airfl ow of systems with electric heater kits requires between 350 and 450 cubic feet of air per
minute (CFM).
4. The air distribution system has the greatest effect on airfl ow. Therefore, the contractor should use only
industry-recognized procedures.
5. Duct design and construction should be carefully done. System performance can be lowered dramatically
through poor design or workmanship.
6. Air supplier ducts should be located along the perimeter of the conditioned space and properly sized.
Improper location or insuffi cient air fl ow may cause drafts or noise in the ductwork.
7. Installers should balance the air distribution system to ensure proper quiet airfl ow to all rooms in the
home. An air velocity meter or airfl ow hood can be used to balance and verify branch and system airfl ow
(CFM).
Bosch Thermotechnology Corp. | 10.2020
0[0]
0.1[.02]
0.2[. 05]
SCFM
743
692
Watts
207
204
Amps
0.91
0.89
0.87
SCFM
958
913
Watts
241
239
Amps
1.05
1.04
SCFM
1107
1066
1022
Watts
315
310
Amps
1.37
1.34
SCFM
1028
985
Watts
362
353
Amps
1.64
1.62
1.60
SCFM
1315
1266
1208
Watts
406
399
Amps
1.82
1.80
SCFM
1532
1478
1421
Watts
524
513
Amps
2.39
2.36
SCFM
1336
1310
1282
Watts
492
483
Amps
2.24
2.22
SCFM
1654
1610
1569
Watts
550
537
Amps
2.40
2.38
SCFM
1918
1875
1817
Watts
717
703
Amps
3.20
3.18
3.14
SCFM
1726
1693
1655
Watts
678
658
Amps
2.95
2.87
SCFM
1983
1933
1879
Watts
695
675
Amps
3.02
2.93
SCFM
2138
2086
2024
Watts
793
773
Amps
3.45
3.37
SCFM
External Static Pressure-Inches W.C.[kPa]
0.3[.07]
0.4[.10]
0.5[.12]
619
550
494
409
200
195
190
184
0.85
0.84
0.81
865
810
711
656
236
231
223
218
1.03
1.00
0.97
0.95
973
897
807
305
299
293
280
1.33
1.27
1.20
1.30
859
930
781
712
345
335
323
313
1.57
1.54
1.51
1146
1065
981
392
385
372
361
1.78
1.75
1.72
1.69
1347
1284
1184
502
491
478
462
2.28
2.23
2.34
2.31
1234
1182
1140
474
463
452
443
2.10
1.93
2.17
2.13
1510
1461
1394
526
512
503
489
2.35
2.32
2.30
2.18
1771
1715
1651
686
670
652
635
3.10
3.04
3.00
1637
1584
1500
639
619
602
576
2.78
2.69
2.62
2.52
1828
1760
1685
655
635
615
596
2.85
2.76
2.67
2.59
1952
1873
1797
751
726
702
679
3.27
3.17
3.06
2.97
Bosch IDS BVA 15 | 15
0.6[.15]
0.7[.17]
0.8[.20]
339
245
190
178
168
161
0.79
0.76
0.73
576
467
368
211
201
191
0.92
0.89
0.84
697
662
526
270
262
246
1.19
1.15
1.09
468
649
571
303
290
276
1.49
1.45
1.42
866
775
686
344
331
320
1.65
1.62
1.59
805
1082
932
446
423
407
2.2
2.14
2.11
833
1049
925
422
393
374
2.03
1.90
1.87
1034
1350
1265
475
458
416
2.04
2.16
2.08
1584
1511
1395
617
600
570
2.90
2.87
2.85
1421
1328
1217
553
526
495
2.42
2.31
2.18
1403
1597
1507
574
550
522
2.5
2.4
2.28
1722
1646
1516
658
638
604
2.88
2.79
2.65
Data subject to change
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