266
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) (Medium 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
652
1123
1.29
726
1347
1.55
793
1567
1.80
856
1784
2.05
914
2000
2.30
4,000
725
1479
1.70
792
1716
1.97
854
1950
2.24
912
2182
2.51
967
2412
2.77
4,500
800
1897
2.18
861
2148
2.47
918
2395
2.75
972
2639
3.04
1024
2620
3.01
5,000
875
2383
2.74
931
2645
3.04
984
2904
3.34
1035
2892
3.33
1083
3212
3.69
5,500
952
2937
3.38
1003
2883
3.32
1053
3217
3.70
1100
3558
4.09
1145
3905
4.49
6,000
1029
3249
3.74
1077
3605
4.15
1123
3966
4.56
1167
4334
4.98
1210
4707
5.41
6,500
1106
4061
4.67
1151
4445
5.11
1194
4834
5.56
1236
5229
6.01
1276
5629
6.47
7,000
1184
5003
5.75
1226
5414
6.23
1266
5831
6.71
1306
6253
7.19
1344
6681
7.68
7,500
1262
6083
7.00
1302
6522
7.50
1340
6967
8.01
1377
7417
8.53
—
—
—
8,000
1341
7312
8.41
1378
7779
8.95
—
—
—
—
—
—
—
—
—
8,500
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
9,000
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
9,500
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
10,000
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
581A240 (20 TONS) (Medium 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
970
2213
2.55
1022
2203
2.53
1072
2464
2.83
1120
2730
3.14
1166
3002
3.45
4,000
1019
2393
2.75
1069
2673
3.07
1117
2959
3.40
1163
3251
3.74
1207
3548
4.08
4,500
1073
2920
3.36
1120
3226
3.71
1165
3537
4.07
1209
3854
4.43
1252
4176
4.80
5,000
1130
3537
4.07
1174
3870
4.45
1218
4207
4.84
1259
4549
5.23
1300
4896
5.63
5,500
1189
4257
4.90
1232
4614
5.31
1273
4977
5.72
1313
5345
6.15
1352
5719
6.58
6,000
1251
5086
5.85
1292
5469
6.29
1331
5859
6.74
1369
6253
7.19
—
—
—
6,500
1315
6035
6.94
1354
6446
7.41
1391
6861
7.89
—
—
—
—
—
—
7,000
1381
7114
8.18
—
—
—
—
—
—
—
—
—
—
—
—
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 ...