—
27
—
Table 18 — Fan Performance 551B102 — Vertical Discharge Units; High-Static Motor (Belt Drive)*
LEGEND
*Motor drive range: 860 to 1080 rpm. All other rpms require field-
supplied drive.
NOTES:
1.
Boldface
indicates field-supplied drive is required.
2. Maximum continuous bhp is 4.20.
3. See page 23 for general fan performance notes.
AIRFLOW
CFM
EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
1.0
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
2500
489
0.41
386
564
0.54
506
629
0.67
625
688
0.80
745
741
0.93
866
2600
502
0.45
424
576
0.59
548
640
0.72
672
697
0.85
797
750
0.99
923
2700
515
0.50
465
587
0.64
594
650
0.77
723
707
0.91
852
760
1.05
982
2800
529
0.55
508
599
0.69
642
661
0.83
776
718
0.98
910
769
1.12
1044
2900
542
0.59
555
611
0.74
693
672
0.89
832
728
1.04
970
779
1.19
1109
3000
556
0.65
604
623
0.80
748
684
0.95
891
738
1.11
1034
789
1.26
1177
3100
569
0.70
656
636
0.86
805
695
1.02
953
749
1.18
1100
799
1.34
1249
3200
583
0.76
712
648
0.93
865
707
1.09
1018
760
1.26
1170
809
1.42
1323
3300
597
0.83
770
661
1.00
929
718
1.17
1086
771
1.33
1244
820
1.50
1401
3400
611
0.89
832
674
1.07
996
730
1.24
1158
782
1.42
1320
831
1.59
1483
3500
625
0.96
898
687
1.14
1066
742
1.32
1233
794
1.50
1400
841
1.68
1567
3600
639
1.04
967
700
1.22
1140
754
1.41
1312
805
1.59
1484
852
1.78
1656
3700
654
1.11
1040
713
1.31
1218
767
1.50
1395
817
1.69
1571
863
1.87
1748
3800
668
1.20
1116
726
1.39
1299
779
1.59
1481
828
1.78
1662
874
1.98
1844
3900
683
1.28
1197
739
1.48
1385
792
1.69
1572
840
1.88
1758
886
2.08
1943
4000
697
1.37
1281
753
1.58
1474
804
1.79
1666
852
1.99
1857
897
2.20
2048
4100
712
1.47
1370
766
1.68
1567
817
1.89
1764
864
2.10
1960
909
2.31
2155
4200
726
1.57
1462
780
1.79
1665
830
2.00
1866
876
2.22
2067
920
2.43
2268
4300
741
1.67
1559
794
1.89
1767
843
2.12
1973
889
2.34
2179
932
2.56
2384
AIRFLOW
CFM
EXTERNAL STATIC PRESSURE (in. wg)
1.2
1.4
1.6
1.8
2.0
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
2500
791
1.06
988
837
1.19
1112
881
1.33
1236
922
1.46
1362
962
1.60
1490
2600
799
1.12
1049
845
1.26
1177
889
1.40
1306
930
1.54
1436
969
1.68
1568
2700
808
1.19
1113
854
1.34
1245
897
1.48
1378
938
1.62
1513
977
1.77
1648
2800
817
1.26
1179
863
1.41
1316
905
1.56
1454
946
1.71
1592
985
1.86
1732
2900
827
1.34
1249
872
1.49
1390
914
1.64
1532
954
1.80
1675
993
1.95
1819
3000
836
1.42
1322
881
1.57
1467
923
1.73
1613
963
1.89
1761
1001
2.05
1909
3100
846
1.50
1398
890
1.66
1547
932
1.82
1698
972
1.98
1849
1010
2.15
2002
3200
856
1.58
1477
899
1.75
1631
941
1.92
1786
980
2.08
1942
1018
2.25
2099
3300
866
1.67
1559
909
1.84
1718
950
2.01
1878
989
2.19
2038
1027
2.36
2199
3400
876
1.76
1645
919
1.94
1808
960
2.12
1972
998
2.29
2137
1036
2.47
2303
3500
886
1.86
1734
929
2.04
1902
969
2.22
2071
1008
2.40
2240
1045
2.58
2410
3600
897
1.96
1827
939
2.14
2000
979
2.33
2173
1017
2.52
2347
1054
2.70
2521
3700
907
2.06
1924
949
2.25
2101
989
2.44
2279
1027
2.63
2457
1063
2.83
2636
3800
918
2.17
2025
959
2.37
2207
999
2.56
2389
1036
2.76
2571
1073
2.95
2755
3900
929
2.28
2130
970
2.48
2316
1009
2.68
2502
1046
2.88
2690
1082
3.09
2877
4000
940
2.40
2238
980
2.61
2429
1019
2.81
2620
1056
3.02
2812
1092
3.22
3004
4100
951
2.52
2351
991
2.73
2547
1029
2.94
2743
1066
3.15
2939
1102
3.36
3136
4200
962
2.65
2468
1002
2.86
2668
1040
3.08
2869
1076
3.29
3070
1112
3.51
3271
4300
973
2.78
2589
1013
3.00
2794
1050
3.22
2999
1087
3.44
3205
1122
3.66
3411
Bhp
—
Brake Horsepower Input to Fan
Watts —
Input Watts to Motor
Summary of Contents for DURAPAC PLUS 551B
Page 5: ...5 Fig 7 Base Unit Dimensions...
Page 51: ......