265
581
A1
55
-3
00
PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND
*Motor drive ranges:
Low Range: 896-1227 (208/230 and 460-v), 873-1108 (575-v)
High Range: 1113-1414
All other rpms require field-supplied drive.
Refer to page 261 for general Fan Performance Data notes.
NOTE:
Maximum continuous bhp is:
Low Range: 4.25 (208/230 and 460-v), 5.75 (575-v)
High Range: 5.75
581A240 (20 TONS) (Low Heat Units)*
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
3,500
642
1082
1.24
714
1296
1.49
781
1510
1.74
843
1726
1.98
901
1943
2.23
4,000
714
1426
1.64
780
1651
1.90
841
1877
2.16
898
2103
2.42
952
2330
2.68
4,500
787
1831
2.11
847
2067
2.38
904
2303
2.65
957
2540
2.92
1008
2501
2.88
5,000
862
2301
2.65
917
2547
2.93
969
2793
3.21
1019
2755
3.17
1066
3062
3.52
5,500
937
2838
3.26
988
3094
3.56
1036
3067
3.53
1083
3390
3.90
1127
3719
4.28
6,000
1013
3113
3.58
1060
3445
3.96
1105
3783
4.35
1149
4130
4.75
1191
4484
5.16
6,500
1089
3893
4.48
1133
4250
4.89
1175
4615
5.31
1216
4986
5.73
1256
5364
6.17
7,000
1166
4798
5.52
1207
5181
5.96
1247
5570
6.41
1285
5965
6.86
1323
6369
7.32
7,500
1243
5837
6.71
1282
6244
7.18
1319
6658
7.66
1355
7080
8.14
1391
7507
8.63
8,000
1320
7017
8.07
1356
7450
8.57
1392
7890
9.08
—
—
—
—
—
—
8,500
1398
8350
9.60
—
—
—
—
—
—
—
—
—
—
—
—
9,000
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
9,500
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
10,000
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
581A240 (20 TONS) (Low Heat Units)* (cont)
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
3,500
955
2160
2.48
1007
2142
2.46
1056
2409
2.77
1104
2684
3.09
1149
2968
3.41
4,000
1004
2299
2.64
1053
2578
2.96
1100
2865
3.29
1145
3160
3.63
1189
3463
3.98
4,500
1056
2793
3.21
1103
3093
3.56
1147
3402
3.91
1191
3718
4.28
1233
4041
4.65
5,000
1112
3376
3.88
1156
3699
4.25
1199
4029
4.63
1240
4366
5.02
1280
4710
5.42
5,500
1171
4057
4.67
1212
4402
5.06
1253
4754
5.47
1292
5114
5.88
1331
5480
6.30
6,000
1232
4845
5.57
1271
5213
6.00
1310
5588
6.43
1348
5970
6.87
1384
6358
7.31
6,500
1295
5749
6.61
1333
6141
7.06
1369
6538
7.52
—
—
—
—
—
—
7,000
1360
6778
7.80
1396
7193
8.27
—
—
—
—
—
—
—
—
—
7,500
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8,000
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8,500
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
9,000
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
9,500
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
10,000
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Bhp
—
Brake Horsepower Input to Fan
Watts —
Input Watts to Motor
Summary of Contents for 581A
Page 30: ...30 BASE UNIT DIMENSIONS 580F036 072 a48 8195 580F036 151 ...
Page 31: ...31 BASE UNIT DIMENSIONS 580F073 a48 8196 580F036 151 ...
Page 32: ...32 BASE UNIT DIMENSIONS 580F090 120 150 a48 8197 580F036 151 ...
Page 33: ...33 BASE UNIT DIMENSIONS 580F091 103 121 151 a48 8198 580F036 151 ...
Page 91: ...91 BASE UNIT DIMENSIONS 581B036 072 a48 8199 581B036 150 ...
Page 93: ...93 ACCESSORY DIMENSIONS 581B036 072 a48 8201 581B036 150 ...
Page 94: ...94 ACCESSORY DIMENSIONS 581B090 150 a48 8202 581B036 150 ...
Page 150: ...150 BASE UNIT DIMENSIONS 581C024 060 581C024 060 ...
Page 198: ...198 TYPICAL WIRING SCHEMATICS 579F 579F240 208 230 V Shown a48 7929 ...
Page 205: ...205 BASE UNIT DIMENSIONS 580F180 210 a48 8203 580F180 300 ...
Page 206: ...206 BASE UNIT DIMENSIONS 580F240 a48 8204 ...
Page 207: ...207 BASE UNIT DIMENSIONS 580F300 a48 8205 580F180 300 ...
Page 209: ...209 ACCESSORY DIMENSIONS 580F300 Vertical Roof Curbs 580F300 a48 7456 580F180 300 ...
Page 233: ...233 BASE UNIT DIMENSIONS 581A210 300 a48 8206 581A155 180 ...
Page 237: ...237 ACCESSORY DIMENSIONS 581A210 300 a48 8234 581A155 180 ...
Page 280: ...280 TYPICAL PIPING AND WIRING 581A 581A155 Shown LEGEND NEC National Electrical Code b48 1258 ...
Page 297: ...297 ...