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AIRFLOW
0.50
0.75
(Cfm)
Rpm
Bhp
Rpm
18,000
668
5.1
702
20,000
725
6.6
756
22,000
781
8.2
809
24,000
837
10.0
864
26,000
898
12.3
923
28,000
955
14.8
979
30,000
1011
17.4
1034
32,000
1071
20.7
1093
34,000
1129
24.3
1150
36,000
1186
28.1
1207
AIRFLOW
3.00
(Cfm)
Rpm
Bhp
Rpm
18,000
983
14.3
1011
20,000
1014
16.3
1042
22,000
1050
18.5
1074
24,000
1089
20.9
1113
26,000
1132
23.8
1155
28,000
1172
26.8
1195
30,000
1219
30.3
1238
32,000
1270
34.4
1288
34,000
1319
38.9
1337
36,000
1369
43.6
1386
LEGEND
Bhp — Brake Horsepower
*Refer to Fan Performance, 48MP Units section, for correct procedure on
48MP units.
AIRFLOW
0.50
0.75
(Cfm)
Rpm
Bhp
Rpm
20,000
449
4.1
485
22,000
477
4.9
511
24,000
505
5.9
538
26,000
535
7.0
565
28,000
563
8.1
591
30,000
595
9.6
621
32,000
624
11.0
649
34,000
655
12.7
679
36,000
685
14.6
709
38,000
717
16.7
739
40,000
748
18.9
769
42,000
779
21.3
799
AIRFLOW
3.00
3.25
(Cfm)
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
20,000
—
—
—
22,000
—
—
—
24,000
—
—
—
26,000
798
20.3
—
28,000
812
21.9
835
30,000
831
23.8
851
32,000
851
26.0
871
34,000
874
28.4
893
36,000
896
31.0
915
38,000
920
33.7
938
40,000
943
36.6
961
42,000
967
39.8
984
LEGEND
Bhp — Brake Horsepower
*Refer to Fan Performance, 48MP Units section, for correct procedure on
48MP units.
Table 14 — Fan Performance (Air Foil) — 48/50MP70M*
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.00
1.25
Bhp
Rpm
Bhp
Rpm
Bhp
5.9
735
6.7
767
7.5
7.4
787
8.3
816
9.1
9.1
838
10.0
865
10.9
11.0
890
12.1
916
13.1
13.4
947
14.5
971
15.6
16.0
1002
17.2
1025
18.4
18.8
1056
20.0
1078
21.3
22.1
1114
23.5
1135
24.9
25.7
1171
27.2
1190
28.7
29.6
1226
31.2
1245
32.8
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.25
3.50
3.75
Bhp
Rpm
Bhp
Rpm
15.4
1039
16.4
1065
17.4
1069
18.6
1095
19.6
1098
20.8
1124
22.2
1136
23.4
1158
25.1
1177
26.4
1199
28.2
1217
29.6
1239
31.6
1256
32.9
1277
35.8
1305
37.2
1323
40.3
1354
41.8
1371
45.1
1403
46.6
1419
Table 15 — Fan Performance (Air Foil) — 48/50MP82N*
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.00
1.25
Bhp
Rpm
Bhp
Rpm
Bhp
5.0
519
6.0
551
7.0
5.9
543
7.0
574
8.1
7.0
568
8.1
598
9.2
8.1
594
9.3
622
10.5
9.3
619
10.6
646
11.9
10.8
647
12.1
673
13.5
12.3
673
13.7
698
15.2
14.1
702
15.6
725
17.1
16.1
731
17.6
752
19.2
18.3
761
19.9
781
21.5
20.5
789
22.2
809
24.0
23.1
819
24.8
838
26.6
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.50
3.75
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
23.6
858 25.3
—
—
25.4
874 27.2
896 29.1
27.6
890 29.3
910 31.0
30.1
912 31.8
930 33.6
32.7
934 34.5
952 36.3
35.6
956 37.5
974 39.4
38.5
978 40.5
996 42.4 1013 44.4 1030 46.4 1046 48.4 1062 50.4 1078 52.5
41.8 1001 43.7 1018 45.8 1035 47.8 1052 49.9 1068 52.0 1084 54.0 1099 56.2
1.50
1.75
Rpm
Bhp
Rpm
Bhp
Rpm
801
8.4
833
9.3
863
844
10.0
875
11.0
905
892
11.9
917
12.8
945
941
14.1
966
15.1
989
995
16.7
1018
17.8
1041
1047
19.6
1069
20.8
1091
1098
22.6
1119
23.9
1140
1154
26.2
1174
27.6
1193
1210
30.1
1228
31.6
1246
1264
34.3
1282
35.9
1299
4.00
4.25
Bhp
Rpm
Bhp
Rpm
17.5
1091
18.6
—
19.7
1120
20.9
1145
22.1
1149
23.3
1173
24.7
1180
26.0
1202
27.8
1221
29.1
1242
31.0
1260
32.5
1280
34.4
1298
35.9
1318
38.6
1340
40.0
1360
43.2
1388
44.7
1404
48.2
1435
49.7
1451
NOTES:
1. Fan performance is based on wet coils and clean 2-in. filters.
2. Conversion — Bhp to kW:
Bhp × .746
kW =
Motor efficiency
See Table 1 for motor efficiency.
1.50
1.75
Rpm
Bhp
Rpm
Bhp
Rpm
583
8.1
616
9.4
—
602
9.2
631
10.3
661
626
10.4
652
11.6
677
649
11.7
675
13.0
699
671
13.2
697
14.5
721
698
14.9
721
16.3
745
722
16.6
745
18.1
767
748
18.7
770
20.2
792
771
20.8
796
22.4
817
801
23.2
822
24.9
843
829
25.7
848
27.4
868
857
28.4
875
30.3
894
4.00
4.25
4.50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
917 30.9
—
—
—
931 32.9
952 34.9
972 36.8
948 35.3
966 37.2
986 39.2 1006 41.3 1025 43.4
969 38.2
986 40.0 1003 41.9 1021 43.8 1039 46.0
991 41.3 1008 43.2 1025 45.1 1041 47.1 1057 49.0
NOTES:
1. Fan performance is based on wet coils and clean 2-in. filters.
2. Conversion — Bhp to kW:
Bhp × .746
kW =
Motor efficiency
See Table 1 for motor efficiency.
33
2.00
2.25
2.50
Bhp
Rpm
Bhp
Rpm
10.3
893
11.2
924
12.0
933
13.1
961
13.9
973
15.0
999
16.2
1013
17.3
1039
19.0
1063
20.1
1084
21.9
1112
23.1
1133
25.2
1160
26.5
1180
29.0
1213
30.4
1232
33.1
1264
34.6
1283
37.4
1317
39.0
1334
4.50
4.75
Bhp
Rpm
Bhp
Rpm
Bhp
—
—
—
—
—
22.1
1169
23.3
1193
24.5
24.6
1197
25.9
1220
27.2
27.3
1226
28.6
1249
30.0
30.5
1262
31.9
1282
33.3
33.9
1300
35.4
1320
36.8
37.5
1338
39.0
1357
40.5
41.6
1379
43.2
1398
44.8
46.2
1420
47.7
1439
49.3
51.3
1467
52.8
1483
54.4
2.00
2.25
2.50
Bhp
Rpm
Bhp
Rpm
—
—
—
—
11.7
—
—
—
12.9
706
14.3
733
14.4
723
15.7
748
15.9
744
17.3
766
17.8
767
19.3
789
19.6
789
21.2
811
21.8
813
23.4
834
24.1
838
25.8
857
26.6
863
28.4
882
29.3
888
31.1
907
32.1
913
34.0
931
4.75
5.00
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
992 38.8
—
—
2.75
Bhp
Rpm
Bhp
12.2
954
13.3
14.1
987
15.2
16.2
1025
17.3
18.5
1065
19.7
21.2
1108
22.5
24.3
1153
25.6
27.7
1200
29.0
31.7
1251
33.1
36.0
1301
37.4
40.5
1351
42.1
5.00
Rpm
Bhp
—
—
1216
25.8
1243
28.5
1271
31.4
1303
34.7
1340
38.3
1376
42.1
1417
46.4
1457
51.0
1498
55.9
2.75
Bhp
Rpm
Bhp
—
—
—
—
—
—
15.8
—
—
17.2
773
18.7
18.8
787
20.2
20.8
810
22.3
22.8
831
24.4
25.0
854
26.7
27.5
877
29.2
30.1
901
31.9
32.9
925
34.8
35.9
950
37.9
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