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PERFORMANCE DATA — 549B, 549C (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND
*Motor drive range: 840 to 1085 rpm. All other rpms require field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
3. See page 103 for General Fan Performance Notes.
549B102 (8
1
/
2
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
2500 462 0.37 348 541 0.50 467 614 0.64 594 681 0.78 728 744 0.93 868
2600 474 0.41 381 551 0.54 505 622 0.68 635 688 0.83 773 750 0.98 916
2700 486 0.45 417 561 0.58 545 630 0.73 679 695 0.88 820 756 1.04 967
2800 498 0.49 456 571 0.63 587 639 0.78 725 702 0.93 870 762 1.09 1020
2900 510 0.53 497 581 0.68 632 648 0.83 774 710 0.99 922 768 1.15 1076
3000 523 0.58 541 592 0.73 680 657 0.88 825 718 1.05 977 775 1.22 1135
3100 536 0.63 587 603 0.78 730 666 0.94 879 726 1.11 1035 783 1.28 1196
3200 549 0.68 637 614 0.84 783 676 1.00 936 735 1.17 1096 790 1.35 1260
3300 562 0.74 689 626 0.90 839 686 1.07 996 743 1.24 1159 798 1.42 1328
3400 575 0.80 744 637 0.96 898 696 1.14 1059 752 1.31 1226 806 1.50 1398
3500 588 0.86 802 649 1.03 961 707 1.21 1125 762 1.39 1296 815 1.58 1472
3600 601 0.93 864 661 1.10 1026 717 1.28 1194 771 1.47 1369 823 1.66 1548
3700 614 1.00 929 673 1.17 1095 728 1.36 1267 781 1.55 1445 832 1.75 1629
3800 628 1.07 997 685 1.25 1167 739 1.44 1343 791 1.64 1525 841 1.84 1712
3900 641 1.15 1069 697 1.33 1243 750 1.53 1423 801 1.72 1608 850 1.93 1799
4000 655 1.23 1144 709 1.42 1322 761 1.61 1506 812 1.82 1695 860 2.03 1890
4100 668 1.31 1223 722 1.51 1405 773 1.71 1593 822 1.92 1786 870 2.13 1984
4200 682 1.40 1305 734 1.60 1492 784 1.80 1683 833 2.02 1880 880 2.23 2082
4300 696 1.49 1392 747 1.70 1582 796 1.91 1777 844 2.12 1979 890 2.34 2184
549B102 (8
1
/
2
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
2500 804 1.09 1013 861 1.25 1164 915 1.41 1319 967 1.59 1479 1017 1.76 1642
2600 809 1.14 1065 864 1.31 1219 918 1.48 1378 969 1.65 1541 1018 1.83 1708
2700 813 1.20 1119 869 1.37 1277 921 1.54 1439 972 1.72 1606 1021 1.90 1776
2800 819 1.26 1176 873 1.43 1337 925 1.61 1503 975 1.79 1673 1023 1.98 1847
2900 824 1.32 1235 878 1.50 1400 929 1.68 1569 978 1.87 1742 1026 2.06 1920
3000 830 1.39 1298 883 1.57 1466 934 1.76 1638 982 1.95 1815 1029 2.14 1996
3100 837 1.46 1363 889 1.65 1534 938 1.83 1710 986 2.03 1891 1033 2.23 2075
3200 843 1.53 1431 894 1.72 1606 944 1.91 1785 991 2.11 1969 1037 2.31 2157
3300 850 1.61 1502 901 1.80 1680 949 2.00 1863 996 2.20 2051 1041 2.40 2242
3400 858 1.69 1576 907 1.88 1758 955 2.09 1944 1001 2.29 2135 1046 2.50 2331
3500 865 1.77 1653 914 1.97 1838 961 2.18 2029 1007 2.38 2223 1051 2.60 2422
3600 873 1.86 1733 921 2.06 1922 967 2.27 2116 1012 2.48 2314 1056 2.70 2516
3700 881 1.95 1816 928 2.16 2010 974 2.37 2207 1019 2.58 2409 1062 2.80 2615
3800 889 2.04 1904 936 2.25 2100 981 2.47 2302 1025 2.69 2507 — — —
3900 898 2.14 1995 944 2.35 2195 988 2.57 2399 1032 2.80 2608 — — —
4000 907 2.24 2089 952 2.46 2293 996 2.68 2501 — — ————
4100 916 2.35 2187 960 2.57 2395 1004 2.80 2607 — — ————
4200 925 2.45 2289 969 2.68 2500 — — ——— ————
4300 934 2.57 2395 978 2.80 2610 — — ——— ————
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
549B, 549C