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PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND
*Motor drive range: 685 to 935 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 74 for General Fan Performance Notes.
580F090,091 (7
1
/
2
TONS) — ALTERNATE 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
2250 505 0.52 484 586 0.73 681 657 0.97 901 722 1.22 1142 782 1.50 1403
2300
513 0.55 509 592 0.76 708 663 1.00 931 727 1.26 1174 787 1.54 1437
2400
527 0.60 561 605 0.82 766 674 1.07 993 738 1.33 1241 796 1.62 1508
2500
543 0.66 617 618 0.89 828 686 1.14 1060 748 1.41 1312 806 1.70 1583
2550
550 0.69 647 625 0.92 860 692 1.17 1095 754 1.45 1349 811 1.74 1623
2600
558 0.73 677 632 0.96 894 698 1.21 1131 759 1.49 1388 816 1.78 1664
2700
574 0.80 742 645 1.03 964 710 1.29 1207 770 1.58 1469 826 1.88 1749
2800
589 0.87 811 659 1.11 1039 723 1.38 1287 782 1.67 1554 837 1.97 1839
2900
605 0.95 885 673 1.20 1119 736 1.47 1372 794 1.76 1644 848 2.07 1933
3000
621 1.03 963 688 1.29 1204 749 1.57 1463 806 1.87 1740 859 2.18 2033
3100
637 1.12 1046 702 1.39 1293 762 1.67 1558 818 1.97 1840 871 2.29 2139
3200
654 1.22 1135 717 1.49 1388 776 1.78 1658 831 2.09 1946 — — —
3300
670 1.32 1228 732 1.60 1488 789 1.89 1764 843 2.21 2057 — — —
3400
686 1.42 1328 747 1.71 1593 803 2.01 1876 856 2.33 2174 — — —
3500
703 1.54 1433 762 1.83 1705 817 2.14 1993 — — — — — —
3600
720 1.66 1543 777 1.95 1822 832 2.27 2116 — — — — — —
3700
736 1.78 1660 793 2.09 1944 — — — — — — — — —
3750
745 1.85 1721 801 2.15 2008 — — — — — — — — —
580F090,091 (7
1
/
2
TONS) — ALTERNATE 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
2250 838 1.81 1683 891 2.12 1981 — — — — — — — — —
2300
842 1.84 1719 895 2.17 2019 — — — — — — — — —
2400
851 1.92 1793 903 2.25 2097 — — — — — — — — —
2500
860 2.01 1873 911 2.34 2180 — — — — — — — — —
2550
865 2.05 1914 916 2.38 2223 — — — — — — — — —
2600
869 2.10 1957 — — — — — — — — — — — —
2700
879 2.19 2046 — — — — — — — — — — — —
2800
889 2.29 2140 — — — — — — — — — — — —
2900
899 2.40 2239 — — — — — — — — — — — —
3000
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3100
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3200
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3300
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3400
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3500
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3600
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3700
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3750
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Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
580F036-151