91
PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND
NOTES:
1.
Boldface
indicates a field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
3.
Maximum continuous bhp is 2.40 for standard motors; 2.90 for high-static motors.
4.
Motor drive range: 1120 to 1585 rpm for standard motors; 1300 to 1685 rpm for high-static
motors. All other rpms require field-supplied drive.
5.
See page 93 for general fan performance notes.
LEGEND
NOTES:
1.
Boldface
indicates a field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
3.
Maximum continuous bhp is 2.40 for standard motors; 2.90 for high-static motors.
4.
Motor drive range: 1120 to 1585 rpm for standard motors; 1300 to 1685 rpm for high-static
motors. All other rpms require field-supplied drive.
5.
See page 93 for general fan performance notes.
LEGEND
NOTES:
1.
Boldface
indicates a field-supplied drive is required.
2.
indicates a high-static motor and drive are required.
3.
Maximum continuous bhp is 2.90 for standard motors; 4.20 for high-static motors.
4.
Standard motor drive range: 840 to 1085 rpm. High-static motor drive range: 860 to 1060
rpm. All other rpms require field-supplied drive.
5.
See page 93 for general fan performance notes.
551B072 (6 TONS) STANDARD MOTOR (BELT DRIVE)
Airflow
(Cfm)
External Static Pressure (in. wg)
0.1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
1800
765
0.45
821
0.51
923
0.65
1019
0.81
1099
0.96
1178
1.14
1249
1.32
1316
1.52
1382
1.72
1900
802
0.45
854
0.58
953
0.73
1046
0.90
1126
1.06
1201
1.23
1274
1.43
1338
1.62
1402
1.83
2000
840
0.60
888
0.66
984
0.82
1073
0.99
1154
1.16
1226
1.33
1297
1.53
1363
1.73
1424
1.94
2100
878
0.69
923
0.75
1015
0.91
1101
1.08
1182
1.27
1252
1.45
1320
1.64
1388
1.85
1448
2.07
2200
916
0.78
958
0.85
1046
1.01
1129
1.19
1209
1.39
1280
1.58
1345
1.77
1410
1.97
1473
2.20
2300
954
0.89
993
0.96
1079
1.13
1160
1.31
1237
1.51
1309
1.71
1372
1.91
1434
2.11
1496
2.34
2400
993
1.00
1029
1.07
1112
1.25
1190
1.43
1264
1.63
1336
1.85
1400
2.06
1459
2.26
1519
2.48
2500
1031
1.13
1066
1.20
1145
1.39
1220
1.57
1292
1.77
1363
2.00
1428
2.22
1486
2.43
1543
2.65
2600
1070
1.26
1103
1.34
1179
1.52
1251
1.71
1322
1.92
1390
2.15
1456
2.38
1514
2.61
1569
2.83
2700
1109
1.41
1140
1.48
1212
1.67
1283
1.87
1352
2.09
1418
2.31
1483
2.56
1543
2.80
—
—
2800
1148
1.57
1177
1.64
1246
1.83
1316
2.04
1383
2.26
1446
2.48
1510
2.73
—
—
—
—
2900
1188
1.74
1215
1.81
1281
2.00
1349
2.22
1413
2.44
1476
2.67
1537
2.92
—
—
—
—
3000
1227
1.92
1253
2.00
1316
2.19
1382
2.42
1444
2.63
1506
2.88
—
—
—
—
—
—
Bhp —
Brake Horsepower Input to Fan
551B072 (6 TONS) HIGH-STATIC MOTOR (BELT DRIVE)
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
1800
821
0.51
923
0.65
1019
0.81
1099
0.96
1178
1.14
1249
1.32
1316
1.52
1382
1.72
1427
1.89
1468
2.06
1900
854
0.58
953
0.73
1046
0.90
1126
1.06
1201
1.23
1274
1.43
1338
1.62
1402
1.83
1447
2.01
1489
2.19
2000
888
0.66
984
0.82
1073
0.99
1154
1.16
1226
1.33
1297
1.53
1363
1.73
1424
1.94
1470
2.13
1512
2.32
2100
923
0.75
1015
0.91
1101
1.08
1182
1.27
1252
1.45
1320
1.64
1388
1.85
1448
2.07
1495
2.28
1538
2.48
2200
958
0.85
1046
1.01
1129
1.19
1209
1.39
1280
1.58
1345
1.77
1410
1.97
1473
2.20
1621
2.42
1564
2.64
2300
993
0.96
1079
1.13
1160
1.31
1237
1.51
1309
1.71
1372
1.91
1434
2.11
1496
2.34
1544
2.57
1589
2.80
2400
1029
1.07
1112
1.25
1190
1.43
1264
1.63
1336
1.85
1400
2.06
1459
2.26
1519
2.48
1568
2.73
1613
2.97
2500
1066
1.20
1145
1.39
1220
1.57
1292
1.77
1363
2.00
1428
2.22
1486
2.43
1543
2.65
1593
2.92
1639
3.17
2600
1103
1.34
1179
1.52
1251
1.71
1322
1.92
1390
2.15
1456
2.38
1514
2.61
1569
2.83
1620
3.11
1666
3.39
2700
1140
1.48
1212
1.67
1283
1.87
1352
2.09
1418
2.31
1483
2.56
1543
2.80
1600
3.12
1651
3.43
1699
3.74
2800
1177
1.64
1246
1.83
1316
2.04
1383
2.26
1446
2.48
1510
2.73
1574
3.09
1632
3.45
1685
3.79
1733
4.13
2900
1215
1.81
1281
2.00
1349
2.22
1413
2.44
1476
2.67
1537
2.92
1602
3.31
1661
3.69
1715
4.06
1764
4.42
3000
1253
2.00
1316
2.19
1382
2.42
1444
2.63
1506
2.88
1582
3.34
1649
3.78
1710
4.21
1765
4.64
—
—
Bhp —
Brake Horsepower Input to Fan
551B090 (7
1
/
2
TONS) — STANDARD AND HIGH-STATIC MOTOR (BELT DRIVE)
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
2250
465
0.43
554
0.64
630
0.86
695
1.09
757
1.34
810
1.62
850
1.91
873
2.20
863
2.50
855
2.78
2300
471
0.45
559
0.66
635
0.89
699
1.12
760
1.37
816
1.65
859
1.94
888
2.24
897
2.55
887
2.85
2400
482
0.50
569
0.71
645
0.95
708
1.18
768
1.44
824
1.72
872
2.01
909
2.32
931
2.64
935
2.96
2500
494
0.54
581
0.76
654
1.01
717
1.25
776
1.51
832
1.79
882
2.09
925
2.40
955
2.72
972
3.06
2550
501
0.57
587
0.79
659
1.05
722
1.29
780
1.55
836
1.83
887
2.13
931
2.45
964
2.77
986
3.11
2660
507
0.59
592
0.82
663
1.08
727
1.32
784
1.58
839
1.87
891
2.17
936
2.49
973
2.82
999
3.16
2700
520
0.65
604
0.89
672
1.14
737
1.40
793
1.66
846
1.95
898
2.26
946
2.58
987
2.91
1019
3.26
2800
533
0.71
615
0.95
683
1.20
747
1.49
802
1.75
855
2.04
906
2.35
954
2.67
997
3.01
1034
3.36
2900
546
0.77
626
1.02
693
1.27
756
1.57
813
1.84
863
2.13
913
2.44
961
2.77
1006
3.12
—
—
3000
559
0.83
637
1.09
704
1.35
765
1.66
823
1.94
872
2.22
921
2.54
969
2.88
1014
3.22
—
—
3100
572
0.90
648
1.17
715
1.43
775
1.74
832
2.05
882
2.33
930
2.65
976
2.99
1021
3.34
—
—
3200
585
0.96
660
1.24
727
1.52
785
1.83
841
2.15
892
2.45
939
2.76
984
3.10
—
—
—
—
3300
598
1.03
671
1.32
739
1.62
795
1.91
851
2.26
902
2.57
948
2.88
993
3.21
—
—
—
—
3400
610
1.10
682
1.41
750
1.72
806
2.01
860
2.36
912
2.69
958
3.01
1002
3.34
—
—
—
—
3500
623
1.17
694
1.50
761
1.82
817
2.11
870
2.47
921
2.82
968
3.15
—
—
—
—
—
—
3600
636
1.25
707
1.60
772
1.93
828
2.23
880
2.57
930
2.95
978
3.29
—
—
—
—
—
—
3700
649
1.33
720
1.71
783
2.03
840
2.35
890
2.69
940
3.07
—
—
—
—
—
—
—
—
3750
655
1.37
727
1.77
789
2.09
846
2.42
896
2.75
945
3.14
—
—
—
—
—
—
—
—
Bhp
—
Brake Horsepower Input to Fan
0TF
Q
0
04-
01
2
5
5
1
B
03
6-
15
0
Summary of Contents for 551A
Page 14: ...14 TYPICAL WIRING SCHEMATIC Single Fan Units Sizes 036 073 ...
Page 16: ...16 TYPICAL WIRING SCHEMATIC Sizes 155 300 ...
Page 29: ...29 BASE UNIT DIMENSIONS 558F036 072 0TFQ004 012 558F036 150 ...
Page 30: ...30 BASE UNIT DIMENSIONS 558F073 0TFQ004 012 558F036 150 ...
Page 31: ...31 BASE UNIT DIMENSIONS 558F090 102 120 150 0TFQ004 012 558F036 150 ...
Page 32: ...32 BASE UNIT DIMENSIONS 558F091 121 0TFQ004 012 558F036 150 ...
Page 74: ...74 BASE UNIT DIMENSIONS 551B036 072 0TFQ004 012 551B036 150 ...
Page 75: ...75 BASE UNIT DIMENSIONS 551B090 150 0TFQ004 012 551B036 150 ...
Page 133: ...133 BASE UNIT DIMENSIONS 558F180 210 0TFQ004 012 558F180 300 ...
Page 134: ...134 BASE UNIT DIMENSIONS 558F240 0TFQ004 012 558F180 300 ...
Page 135: ...135 BASE UNIT DIMENSIONS 558F300 0TFQ004 012 558F180 300 ...
Page 153: ...153 BASE UNIT DIMENSIONS 551A155 180 0TFQ004 012 551A155 180 ...