79
Boldface indicates an alternated standard static drive package is
required.
Italics indicate a high static drive package with different motor pulley is
required.
NOTE: Fan tables include highest gas heat.
Table H — 581J 24 Vertical Supply (20 Tons)
CFM
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
6000 615 1.25
690 1.56 757 1.89 819 2.22 875 2.57
6500 653 1.52
725 1.87 789 2.21 848 2.57 903 2.94
7000
692 1.85 760 2.21 822 2.58 879 2.96 932 3.35
7500
731 2.21 796 2.60 856 3.00 911 3.40 963 3.81
8000
771 2.63 833 3.04 890 3.47 944 3.89 994 4.33
8500
812 3.10 871 3.54 926 3.98 977 4.43 1026 4.89
9000
852 3.62 909 4.09 961 4.55 1011 5.03 1059 5.51
9500
893 4.20 947 4.69 998 5.19 1046 5.69 1092 6.19
10000
934 4.85 986 5.36 1035 5.88 1082 6.40 1126 6.93
CFM
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
6000
928 2.92 978 3.28 1025 3.65 1071 4.03 1114 4.42
6500
955 3.31 1003 3.69 1050 4.09 1094 4.49 1137 4.89
7000
983 3.75 1030 4.15 1075 4.56 1119 4.98 1161 5.41
7500
1011 4.23 1058 4.66 1102 5.09 1145 5.53 1186 5.98
8000
1041 4.77 1087 5.21 1130 5.67 1171 6.13 ——
8500
1072 5.35 1116 5.82 1158 6.30 ————
9000
1104 6.00 1147 6.49 1188 6.99 ————
9500
1136 6.70 1178 7.22 ——————
10000
1169 7.47 ————————
Standard static 690-863 RPM
Voltage 208v / 230v / 460v / 575v
Max BHP 6.5 / 6.9 / 7.0 / 8.3
Medium static 835-1021 RPM
Voltage 208v / 230v / 460v / 575v
Max BHP 6.5 / 6.9 / 7.0 / 8.3
High static 941-1176 RPM
Voltage 208v / 230v / 460v / 575v
Max BHP 10.5 / 11.9 / 11.9 / 11.0
APPENDIX C — FAN PERFORMANCE