Bryant Preferred Series Service And Maintenance Instructions page 81

CFM 0.2
RPM
7500 731
8150 783
8750 832
9400 885
10000 934
10650 988
11250 1038
11900 1093
12500 1144
CFM 1.2
RPM
7500 1011
8150 1050
8750 1088
9400 1129
10000 1169
10650 —
11250 —
11900 —
12500 —
Italics indicate a high static drive package with different motor pulley is
required.
UNDERSCORE indicates operation point covered by mid static drive.
Confirm max BHP coverage based on the unit voltage.
Table K — Pulley Adjustment (Vertical) - Fan RPM at Motor Pulley Settings
MOTOR/DRIVE
MODEL SIZE
Standard Static
17
Medium Static
3-phase
Standard Static
20
Medium Static
3-phase
Standard Static
24
Medium Static
3-phase
Standard Static
28
Medium Static
3-phase
NOTE: Do not adjust pulley further than 5 turns open.
Factory settings
APPENDIX C — FAN PERFORMANCE
Table J — 581J 28 Vertical Supply (25 Tons)
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
BHP RPM BHP
2.21 796 2.60
2.76 844 3.19
3.35 890 3.80
4.08 940 4.57
4.85 986 5.36
5.78 1038 6.33
6.74 1086 7.32
7.91 1138 8.52
9.10 1187 9.74
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
BHP RPM BHP
4.23 1058 4.66
4.94 1095 5.39
5.67 1131 6.15
6.56 1172 7.07
7.47 — —
— — —
— — —
— — —
— — —
COMBO
0
680
863
High Static 1009
822
879
High Static 1078 1058
863
1021 1002
High Static 1176 1153
911
1116 1096
High Static 1176 1153
0.6
RPM BHP
856 3.00
901 3.61
943 4.26
991 5.06
1035 5.88
1084 6.88
1130 7.91
1181 9.14
— —
1.6
RPM BHP
1102 5.09
1138 5.85
1173 6.64
— —
— —
— —
— —
— —
— —
Standard static 717-911 RPM, 4.9 Max BHP
Medium static 913-1116 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
NOTE: Fan tables include highest gas heat.
MOTOR PULLEY TURNS OPEN
0.5 1.0 1.5 2.0
663 647 630 614
845 826 808 789
991 972 954 936
802 782 762 742
862 846 829 813
1039 1019 1000
846 828 811 794
984 965 947
1129 1106 1082
892 872 853 833
1075 1055 1035
1129 1106 1082
81
0.8
RPM BHP RPM
911 3.40 963
954 4.05 1003
994 4.73 1042
1039 5.55 1085
1082 6.40 1126
1129 7.44 1172
1173 8.49 —
— — —
— — —
1.8
RPM BHP RPM
1145 5.53 1186
1180 6.32 —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
2.5 3.0 3.5 4.0
597 580 564 547
771 753 734 716
918 899 881 863
722 702 682 662
796 779 763 746
980 960 941 921
777 759 742 725
928 909 891 872
1059 1035 1012 988
814 795 775 756
1015 994 974 954
1059 1035 1012 988
1.0
BHP
3.81
4.49
5.19
6.05
6.93
8.00
—
—
—
2.0
BHP
5.98
—
—
—
—
—
—
—
—
4.5 5.0
531 514
697 679
844 826
642 622
730 713
902 882
707 690
854 835
965 941
736 717
933 913
965 941