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PERFORMANCE DATA — 548F (cont)
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)
LEGEND
*Motor drive range: 770 to 1175 rpm. All other rpms require a field-
supplied drive.
See General Fan Performance notes on page 27.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 1.00.
LEGEND
*Motor drive range: 1075 to 1455 rpm. All other rpms require a field-
supplied drive.
See General Fan Performance notes on page 27.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
548F048 (4 TONS) — ALTERNATE MOTOR AND DRIVE*
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 767 0.29 291 880 0.38 382 976 0.48 474 1060 0.57 570 1136 0.67 668
1300 811 0.35 352 920 0.45 451 1013 0.55 550 1095 0.66 652 1170 0.76 756
1400 855 0.43 423 960 0.53 529 1051 0.64 636 1132 0.75 744 1205 0.86 855
1500 900 0.51 504 1002 0.62 617 1090 0.74 731 1169 0.85 846 1242 0.97 963
1600 945 0.60 594 1044 0.72 716 1130 0.84 837 1207 0.96 959 ———
1700 991 0.70 696 1086 0.83 825 1170 0.96 954 ——————
1800 10380.8181011300.95947—————————
1900 10850.94936————————————
2000 ———————————————
548F048 (4 TONS) — ALTERNATE MOTOR AND DRIVE* (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
1200 1205 0.77 768 1270 0.88 872 1332 0.98 979 ——————
1300 1239 0.87 863 1303 0.98 972 —————————
1400 1273 0.97 967 ————————————
1500 ———————————————
1600 ———————————————
1700 ———————————————
1800 ———————————————
1900 ———————————————
2000 ———————————————
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
548F048 (4 TONS) — HIGH-STATIC MOTOR AND DRIVE*
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 767 0.29 291 880 0.38 382 976 0.48 474 1060 0.57 570 1136 0.67 668
1300 811 0.35 352 920 0.45 451 1013 0.55 550 1095 0.66 652 1170 0.76 756
1400 855 0.43 423 960 0.53 529 1051 0.64 636 1132 0.75 744 1205 0.86 855
1500 900 0.51 504 1002 0.62 617 1090 0.74 731 1169 0.85 846 1242 0.97 963
1600 945 0.60 594 1044 0.72 716 1130 0.84 837 1207 0.96 959 1278 1.09 1083
1700 991 0.70 696 1086 0.83 825 1170 0.96 954 1246 1.09 1083 1316 1.22 1214
1800 1038 0.81 810 1130 0.95 947 1211 1.09 1083 1286 1.23 1219 1354 1.36 1357
1900 1085 0.94 936 1174 1.09 1081 1253 1.23 1224 1326 1.38 1368 1393 1.52 1513
2000 1132 1.08 1075 1218 1.23 1228 1296 1.39 1379 1367 1.54 1531 1432 1.69 1682
548F048 (4 TONS) — HIGH-STATIC MOTOR AND DRIVE* (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
1200 1205 0.77 768 1270 0.88 872 1332 0.98 979 1389 1.09 1088 1444 1.21 1200
1300 1239 0.87 863 1303 0.98 972 1364 1.09 1084 1421 1.21 1199 1475 1.32 1316
1400 1273 0.97 967 1337 1.09 1082 1397 1.21 1200 1453 1.33 1320 1507 1.45 1443
1500 1309 1.09 1082 1371 1.21 1204 1430 1.33 1327 1486 1.46 1453 1540 1.59 1581
1600 1344 1.21 1208 1406 1.34 1336 1465 1.47 1465 1520 1.61 1597 1573 1.74 1731
1700 1381 1.35 1346 1442 1.49 1480 1500 1.62 1616 1555 1.76 1753 1607 1.90 1893
1800 1418 1.50 1496 1478 1.64 1636 1535 1.79 1778 1589 1.93 1922 1641 2.08 2068
1900 1456 1.67 1658 1515 1.82 1806 1571 1.96 1954 1625 2.12 2104 1676 2.27 2256
2000 1494 1.84 1835 1553 2.00 1989 1608 2.16 2144 1661 2.31 2301 ———
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
548F