47
PERFORMANCE DATA (cont)
FAN PERFORMANCE — VERTICAL 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 (71/2 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 513 0.54 505 595 0.7 6 713 665 1.01 940 728 1.27 1187 786 1.56 1453
2300 521 0.57 531 601 0 .79 7 41 671 1.04 972 734 1.31 1222 791 1.60 1489
2400 535 0.63 584 615 0 .86 8 02 684 1.11 1038 745 1.39 1293 802 1.68 1566
2500 551 0.69 642 628 0 .93 866 696 1.19 1109 757 1.47 13 69 813 1.77 1647
2550 558 0.72 673 635 0 .97 900 702 1.23 1146 763 1.51 14 09 818 1.81 1689
2600 566 0.76 705 642 1 .00 935 709 1.27 1183 769 1.55 14 50 824 1.86 1732
2700 582 0.83 771 656 1 .08 1008 721 1.35 1263 781 1.65 1535 835 1.95 1823
2800 597 0.90 842 670 1 .16 1086 734 1.44 1347 793 1.74 1625 847 2.06 1917
2900 613 0.98 918 684 1 .25 1169 748 1.54 1436 805 1.84 1720 859 2.16 2019
3000 629 1.07 999 699 1.3 5 1256 761 1.64 1530 8 18 1.95 1820 871 2.28 2125
3100 645 1.16 1085 713 1.45 1349 775 1.75 1630 831 2.06 1925 883 2.40 2235
3200 662 1.26 1176 728 1.55 1448 788 1.86 1734 844 2.18 2036 — — —
3300 678 1.36 1272 743 1.66 1551 802 1.98 1845 857 2.31 2152 — — —
3400 694 1.47 1374 758 1.78 1660 816 2.10 1961 — — — — — —
3500 711 1.59 1482 773 1.90 1775 831 2.23 2082 — — — — — —
3600 727 1.71 1596 789 2.03 1896 845 2.37 2210 — — — — — —
3700 744 1.84 1716 804 2.17 2023 — — — — — — — — —
3750 752 1.91 1778 812 2.24 2089 — — — — — — — — —
580F090,091 (71/2 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 839 1.86 1735 889 2.18 2032 — — — — — — — — —
2300 844 1.90 1773 893 2.22 2073 — — — — — — — — —
2400 854 1.99 1855 903 2.32 2159 — — — — — — — — —
2500 865 2.08 1940 — — — — — — — — — — — —
2550 870 2.13 1985 — — — — — — — — — — — —
2600 875 2.18 2031 — — — — — — — — — — — —
2700 886 2.28 2126 — — — — — — — — — — — —
2800 897 2.39 2227 — — — — — — — — — — — —
2900 ———————————————
3000 ———————————————
3100 ———————————————
3200 ———————————————
3300 ———————————————
3400 ———————————————
3500 ———————————————
3600 ———————————————
3700 ———————————————
3750 ———————————————
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
580F036-151