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105
PERFORMANCE DATA — 549B, 549C (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND
*Motor drive range: 770 to 1185 rpm. All other rpms require field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 1.20.
3. See page 103 for General Fan Performance Notes.
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 103 for General Fan Performance Notes.
549B048 AND 549C048 (4 TONS) STANDARD MOTOR (BELT 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 643 0.23 233 762 0.35 344 860 0.46 459 944 0.58 579 1020 0.71 705
1300
674 0.28 276 791 0.40 395 887 0.52 517 970 0.65 645 1045 0.78 777
1400
706 0.33 324 820 0.45 451 914 0.59 582 997 0.72 717 1071 0.86 857
1500
738 0.38 379 849 0.52 515 942 0.66 653 1024 0.80 796 1097 0.95 942
1600
771 0.44 440 879 0.59 584 971 0.74 731 1051 0.89 881 1124 1.04 1035
1700
804 0.51 507 910 0.66 661 1000 0.82 816 1079 0.98 974 1151 1.14 1136
1800
837 0.59 582 941 0.75 745 1029 0.91 909 1107 1.08 1075 — — —
1900
871 0.67 665 972 0.84 837 1059 1.02 1010 1136 1.19 1184 — — —
2000
906 0.76 756 1004 0.94 938 1089 1.12 1119 — — — — — —
549B048 AND 549C048 (4 TONS) STANDARD MOTOR (BELT 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 1089 0.84 835 1153 0.98 971 1212 1.12 1111 —— — —— —
1300
1114 0.92 915 1177 1.06 1056 — — — — — — — — —
1400
1139 1.01 1000 1202 1.15 1149 —— — —— — —— —
1500
1164 1.10 1093 — — — — — — — — — — — —
1600
1190 1.20 1193 —— — —— — —— — —— —
1700
—— — —— — —— — —— — —— —
1800
—— — —— — —— — —— — —— —
1900
—— — —— — —— — —— — —— —
2000
—— — —— — —— — —— — —— —
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
549B048 AND 549C048 (4 TONS) HIGH-STATIC MOTOR (BELT 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 643 0.23 233 762 0.35 344 860 0.46 459 944 0.58 579 1020 0.71 705
1300
674 0.28 276 791 0.40 395 887 0.52 517 970 0.65 645 1045 0.78 777
1400
706 0.33 324 820 0.45 451 914 0.59 582 997 0.72 717 1071 0.86 857
1500
738 0.38 379 849 0.52 515 942 0.66 653 1024 0.80 796 1097 0.95 942
1600
771 0.44 440 879 0.59 584 971 0.74 731 1051 0.89 881 1124 1.04 1035
1700
804 0.51 507 910 0.66 661 1000 0.82 816 1079 0.98 974 1151 1.14 1136
1800
837 0.59 582 941 0.75 745 1029 0.91 909 1107 1.08 1075 1178 1.25 1244
1900
871 0.67 665 972 0.84 837 1059 1.02 1010 1136 1.19 1184 1206 1.37 1361
2000
906 0.76 756 1004 0.94 938 1089 1.12 1119 1165 1.31 1301 1234 1.49 1486
549B048 AND 549C048 (4 TONS) HIGH-STATIC MOTOR (BELT 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 1089 0.84 835 1153 0.98 971 1212 1.12 1111 1269 1.26 1256 1322 1.41 1404
1300
1114 0.92 915 1177 1.06 1056 1236 1.21 1202 1292 1.36 1353 1346 1.52 1508
1400
1139 1.01 1000 1202 1.15 1149 1261 1.31 1301 1316 1.47 1457 1369 1.63 1618
1500
1164 1.10 1093 1227 1.25 1248 1285 1.41 1407 1341 1.58 1570 1394 1.75 1736
1600
1190 1.20 1193 1252 1.36 1355 1311 1.53 1520 1366 1.70 1690 1418 1.87 1863
1700
1217 1.31 1301 1278 1.48 1470 1336 1.65 1642 1391 1.83 1818 1443 2.01 1998
1800
1244 1.42 1417 1305 1.60 1593 1362 1.78 1772 1416 1.97 1955 1468 2.15 2141
1900
1271 1.55 1541 1331 1.73 1724 1388 1.92 1911 1442 2.11 2101 1494 2.31 2294
2000
1298 1.68 1674 1358 1.87 1865 1415 2.07 2059 1468 2.27 2256 —— —
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
549B, 549C