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Table 14 — Fan Performance 581B048 — Vertical Discharge Units; High-Static Motor (Belt Drive)*
LEGEND
*Motor drive range: 1075 to 1455 rpm. All other rpms require field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
3. See page 33 for general fan performance notes.
Table 15 — Fan Performance 581B060, Single-Phase — Vertical Discharge Units;
Standard Motor (Belt Drive)*
LEGEND
*Motor drive range: 1035 to 1460 rpm. All other rpms require field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 1.30.
3. See page 33 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
1200 666 0.26 257 778 0.37 367 871 0.47 471 952 0.57 572 1025 0.67 670
1300 701 0.31 306 810 0.43 426 901 0.54 540 981 0.65 651 1053 0.76 760
1400 737 0.36 361 842 0.49 491 931 0.62 616 1010 0.74 738 1081 0.86 856
1500 773 0.42 422 875 0.57 564 963 0.70 699 1040 0.84 831 1110 0.96 960
1600 810 0.49 491 909 0.65 643 994 0.79 790 1070 0.94 932 1140 1.08 1070
1700 847 0.57 567 943 0.73 730 1027 0.89 888 1101 1.05 1040 1170 1.20 1189
1800 885 0.66 652 978 0.83 826 1060 1.00 994 1133 1.16 1157 1200 1.32 1316
1900 923 0.75 745 1014 0.94 930 1093 1.11 1109 1165 1.29 1283 1231 1.46 1453
2000 962 0.85 847 1049 1.05 1043 1127 1.24 1233 1198 1.42 1417 1263 1.61 1598
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
1200 1093 0.77 767 1155 0.87 861 1213 0.96 955 1268 1.05 1047 1321 1.14 1137
1300 1119 0.87 866 1181 0.98 970 1239 1.08 1073 1294 1.18 1175 1346 1.28 1275
1400 1147 0.98 972 1208 1.09 1086 1265 1.21 1199 1320 1.32 1310 1371 1.43 1419
1500 1175 1.09 1086 1235 1.22 1209 1292 1.34 1332 1346 1.46 1452 1397 1.58 1572
1600 1204 1.21 1207 1263 1.35 1340 1320 1.48 1472 1373 1.61 1603 1424 1.74 1732
1700 1233 1.34 1336 1292 1.49 1480 1348 1.63 1622 1401 1.77 1762 1451 1.91 1901
1800 1262 1.48 1473 1321 1.64 1627 1376 1.79 1779 1428 1.94 1930 1479 2.09 2078
1900 1293 1.63 1620 1350 1.79 1784 1405 1.96 1946 1457 2.12 2106 1506 2.28 2265
2000 1323 1.79 1776 1380 1.96 1950 1434 2.13 2123 1486 2.31 2293 ———
Bhp — Brake Horsepower
Watts — Input Watts to Motor
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
1500 848 0.42 371 968 0.55 486 1069 0.68 600 1158 0.80 715 1238 0.94 831
1600 887 0.49 433 1004 0.63 556 1103 0.76 678 1190 0.90 800 1269 1.04 922
1700 927 0.57 502 1040 0.71 633 1137 0.86 763 1223 1.00 892 1302 1.15 1022
1800 967 0.65 579 1077 0.81 718 1172 0.96 856 1257 1.12 993 1334 1.27 1130
1900 1007 0.75 663 1115 0.91 811 1208 1.08 957 1291 1.24 1101 — — —
2000 1048 0.85 757 1153 1.03 913 1244 1.20 1066 — —————
2100 1090 0.97 859 1191 1.15 1023 —————————
2200 1131 1.09 970 1230 1.29 1143 —————————
2300 1173 1.23 1091 ————————————
2400 ———————————————
2500 ———————————————
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
1500 1312 1.07 948 1380 1.20 1067 —————————
1600 1342 1.18 1047 ————————————
1700 1374 1.30 1153 ————————————
1800 ———————————————
1900 ———————————————
2000 ———————————————
2100 ———————————————
2200 ———————————————
2300 ———————————————
2400 ———————————————
2500 ———————————————
Bhp — Brake Horsepower
Watts — Input Watts to Motor