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101
PERFORMANCE DATA — 549B, 549C (cont)
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)
LEGEND
*Motor drive range: 860 to 1080 rpm. All other rpms require field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 3.70.
3. See page 103 for General Fan Performance Notes.
549B102 (8
1
/
2
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
2500 489 0.41 386 564 0.54 506 629 0.67 625 688 0.80 745 741 0.93 866
2600 502 0.45 424 576 0.59 548 640 0.72 672 697 0.85 797 750 0.99 923
2700 515 0.50 465 587 0.64 594 650 0.77 723 707 0.91 852 760 1.05 982
2800 529 0.55 508 599 0.69 642 661 0.83 776 718 0.98 910 769 1.12 1044
2900 542 0.59 555 611 0.74 693 672 0.89 832 728 1.04 970 779 1.19 1109
3000 556 0.65 604 623 0.80 748 684 0.95 891 738 1.11 1034 789 1.26 1177
3100 569 0.70 656 636 0.86 805 695 1.02 953 749 1.18 1100 799 1.34 1249
3200 583 0.76 712 648 0.93 865 707 1.09 1018 760 1.26 1170 809 1.42 1323
3300 597 0.83 770 661 1.00 929 718 1.17 1086 771 1.33 1244 820 1.50 1401
3400 611 0.89 832 674 1.07 996 730 1.24 1158 782 1.42 1320 831 1.59 1483
3500 625 0.96 898 687 1.14 1066 742 1.32 1233 794 1.50 1400 841 1.68 1567
3600 639 1.04 967 700 1.22 1140 754 1.41 1312 805 1.59 1484 852 1.78 1656
3700 654 1.11 1040 713 1.31 1218 767 1.50 1395 817 1.69 1571 863 1.87 1748
3800 668 1.20 1116 726 1.39 1299 779 1.59 1481 828 1.78 1662 874 1.98 1844
3900 683 1.28 1197 739 1.48 1385 792 1.69 1572 840 1.88 1758 886 2.08 1943
4000 697 1.37 1281 753 1.58 1474 804 1.79 1666 852 1.99 1857 897 2.20 2048
4100 712 1.47 1370 766 1.68 1567 817 1.89 1764 864 2.10 1960 909 2.31 2155
4200 726 1.57 1462 780 1.79 1665 830 2.00 1866 876 2.22 2067 920 2.43 2268
4300 741 1.67 1559 794 1.89 1767 843 2.12 1973 889 2.34 2179 932 2.56 2384
549B102 (8
1
/
2
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
2500 791 1.06 988 837 1.19 1112 881 1.33 1236 922 1.46 1362 962 1.60 1490
2600 799 1.12 1049 845 1.26 1177 889 1.40 1306 930 1.54 1436 969 1.68 1568
2700 808 1.19 1113 854 1.34 1245 897 1.48 1378 938 1.62 1513 977 1.77 1648
2800 817 1.26 1179 863 1.41 1316 905 1.56 1454 946 1.71 1592 985 1.86 1732
2900 827 1.34 1249 872 1.49 1390 914 1.64 1532 954 1.80 1675 993 1.95 1819
3000 836 1.42 1322 881 1.57 1467 923 1.73 1613 963 1.89 1761 1001 2.05 1909
3100 846 1.50 1398 890 1.66 1547 932 1.82 1698 972 1.98 1849 1010 2.15 2002
3200 856 1.58 1477 899 1.75 1631 941 1.92 1786 980 2.08 1942 1018 2.25 2099
3300 866 1.67 1559 909 1.84 1718 950 2.01 1878 989 2.19 2038 1027 2.36 2199
3400 876 1.76 1645 919 1.94 1808 960 2.12 1972 998 2.29 2137 1036 2.47 2303
3500 886 1.86 1734 929 2.04 1902 969 2.22 2071 1008 2.40 2240 1045 2.58 2410
3600 897 1.96 1827 939 2.14 2000 979 2.33 2173 1017 2.52 2347 1054 2.70 2521
3700 907 2.06 1924 949 2.25 2101 989 2.44 2279 1027 2.63 2457 1063 2.83 2636
3800 918 2.17 2025 959 2.37 2207 999 2.56 2389 1036 2.76 2571 1073 2.95 2755
3900 929 2.28 2130 970 2.48 2316 1009 2.68 2502 1046 2.88 2690 1082 3.09 2877
4000 940 2.40 2238 980 2.61 2429 1019 2.81 2620 1056 3.02 2812 1092 3.22 3004
4100 951 2.52 2351 991 2.73 2547 1029 2.94 2743 1066 3.15 2939 1102 3.36 3136
4200 962 2.65 2468 1002 2.86 2668 1040 3.08 2869 1076 3.29 3070 1112 3.51 3271
4300 973 2.78 2589 1013 3.00 2794 1050 3.22 2999 1087 3.44 3205 1122 3.66 3411
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
549B, 549C