80
Boldface indicates an alternated standard static drive package is
required.
NOTE: Fan tables include highest gas heat.
Table I — 581J 28 Horizontal Supply (25 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
7500 757 3.39
816 4.03 869 4.68 917 5.35 963 6.03
8000
800 4.02 856 4.70 907 5.39 954 6.10 998 6.81
8500
843 4.73 896 5.45 945 6.18 991 6.93 1034 7.68
9000
886 5.52 937 6.28 984 7.06 1029 7.84 1071 8.63
9500
929 6.40 978 7.21 1024 8.02 1067 8.84 ——
10000
973 7.38 1020 8.22 1064 9.08 ————
10500
1017 8.45 1062 9.33 ——————
11000
1061 9.63 ————————
11500 ——————————
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
7500
1005 6.72 1046 7.42 1084 8.13 ————
8000
1040 7.54 1079 8.28 ——————
8500
1075 8.45 ————————
9000 ——————————
9500 ——————————
10000 ——————————
10500 ——————————
11000 ——————————
11500 ——————————
Medium static 755-923 RPM
Voltage 208v / 230v / 460v / 575v
Max BHP 6.5 / 6.9 / 7.0 / 8.3
High static 906-1100 RPM
Voltage 208v / 230v / 460v / 575v
Max BHP 10.5 / 11.9 / 11.9 / 11.0
APPENDIX C — FAN PERFORMANCE