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PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL 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 74 for General Fan Performance Notes.
580F103 (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
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 882 2.41 2249
3300 670 1.32 1228 732 1.60 1488 789 1.89 1764 843 2.21 2057 894 2.54 2365
3400 686 1.42 1328 747 1.71 1593 803 2.01 1876 856 2.33 2174 907 2.67 2488
3500 703 1.54 1433 762 1.83 1705 817 2.14 1993 870 2.46 2297 919 2.81 2616
3600 720 1.66 1543 777 1.95 1822 832 2.27 2116 883 2.60 2425 932 2.95 2750
3700 736 1.78 1660 793 2.09 1944 846 2.41 2245 896 2.75 2560 944 3.10 2889
3750 745 1.85 1721 801 2.15 2008 853 2.48 2312 903 2.82 2630 951 3.18 2962
3800 753 1.91 1783 808 2.22 2074 861 2.55 2380 910 2.90 2701 957 3.26 3036
3900 770 2.05 1912 824 2.37 2209 875 2.70 2522 924 3.05 2848 970 3.42 3189
4000 787 2.20 2047 840 2.52 2351 890 2.86 2669 938 3.22 3002 984 3.59 3348
4100 804 2.35 2189 856 2.68 2499 905 3.03 2824 952 3.39 3162 — — —
4200 821 2.51 2338 872 2.85 2655 920 3.20 2986 967 3.57 3331 — — —
4250 829 2.59 2415 880 2.93 2735 928 3.29 3069 974 3.66 3417 — — —
580F103 (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
2550 865 2.05 1914 916 2.38 2223 964 2.73 2547 1010 3.10 2888 1054 3.48 3243
2600 869 2.10 1957 920 2.43 2267 968 2.78 2593 1014 3.15 2935 1058 3.53 3292
2700 879 2.19 2046 929 2.53 2360 976 2.88 2689 1022 3.25 3035 1066 3.64 3395
2800 889 2.29 2140 938 2.64 2458 985 2.99 2791 1030 3.37 3140 — — —
2900 899 2.40 2239 948 2.75 2561 994 3.11 2898 1039 3.49 3250 — — —
3000 910 2.51 2343 958 2.86 2670 1004 3.23 3011 1048 3.61 3366 — — —
3100 921 2.63 2453 968 2.98 2783 1013 3.35 3128 — — — — — —
3200 932 2.75 2569 978 3.11 2903 1023 3.49 3252 — — — — — —
3300 943 2.88 2690 989 3.25 3029 1033 3.63 3382 — — — — — —
3400 954 3.02 2816 1000 3.39 3159 — — — — — — — — —
3500 966 3.16 2950 1011 3.54 3297 — — — — — — — — —
3600 978 3.31 3088 1022 3.69 3442 — — — — — — — — —
3700 990 3.47 3233 — — — — — — — — — — — —
3750 996 3.55 3308 — — — — — — — — — — — —
3800 1002 3.63 3385 — — — — — — — — — — — —
3900 ———————————————
4000 ———————————————
4100 ———————————————
4200 ———————————————
4250 ———————————————
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
580F036-151