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Table 20 — Fan Performance, 48AJ,AK035 — Vertical Discharge Units
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb,
cabinet losses, and clean 2-in. filters.
2. Conversion — Bhp to watts:
3. Variable Air Volume units will operate down to 70 cfm/ton. Per-
formance at 70 cfm/ton is limited to unloaded operation and
may be additionally limited by edb (entering dry bulb) and ewb
(entering wet bulb) conditions.
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.20.40.60.81.01.21.41.6
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
7,000 433 2.01 488 2.38 539 2.76 587 3.14 633 3.54 677 3.94 719 4.36 759 4.79
8,000 480 2.73 529 3.12 576 3.53 620 3.94 662 4.35 703 4.77 742 5.21 780 5.65
9,000 528 3.59 573 4.01 615 4.44 656 4.88 695 5.32 733 5.76 769 6.21 805 6.67
10,000 577 4.62 618 5.07 657 5.52 695 5.98 731 6.44 766 6.91 800 7.38 834 7.86
11,000 627 5.83 664 6.29 700 6.77 735 7.25 769 7.74 802 8.23 834 8.73 866 9.22
12,000 677 7.22 711 7.70 745 8.20 778 8.71 810 9.22 841 9.73 871 10.25 901 10.77
13,000 728 8.80 760 9.30 791 9.82 822 10.35 852 10.89 881 11.42 910 11.96 938 12.51
14,000 779 10.59 809 11.11 838 11.65 867 12.20 895 12.75 923 13.31 950 13.87 977 14.44
15,000 831 12.60 858 13.13 886 13.68 913 14.25 940 14.83 966 15.41 992 15.99 1017 16.58
16,000 883 14.82 909 15.37 934 15.94 960 16.53 985 17.12 1010 17.72 1034 18.33 1059 18.94
17,000 935 17.28 959 17.85 983 18.43 1007 19.04 1031 19.65 1055 20.27 1078 20.89 1101 21.52
18,000 987 19.98 1010 20.56 1033 21.16 1056 21.78 1078 22.41 1101 23.05 — — — —
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.82.02.22.42.62.83.03.2
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
7,000 797 5.22 834 5.67 869 6.12 902 6.57 934 7.04 965 7.50 995 7.98 1024 8.45
8,000 816 6.10 852 6.56 886 7.03 919 7.50 951 7.99 982 8.47 1011 8.97 1040 9.46
9,000 839 7.14 873 7.61 906 8.10 938 8.59 969 9.08 999 9.59 1028 10.10 1057 10.61
10,000 866 8.35 898 8.84 929 9.33 960 9.84 990 10.35 1019 10.87 1047 11.39 1075 11.92
11,000 897 9.73 927 10.24 956 10.75 985 11.27 1014 11.79 1041 12.33 1069 12.86 1096 13.41
12,000 930 11.29 958 11.82 986 12.35 1014 12.89 1041 13.43 1067 13.97 1093 14.53 1119 15.08
13,000 965 13.05 992 13.60 1019 14.15 1045 14.70 1071 15.26 1096 15.82 1121 16.39 1146 16.96
14,000 1003 15.00 1028 15.57 1054 16.14 1078 16.72 1103 17.29 1127 17.87 1151 18.45 1175 19.04
15,000 1042 17.17 1066 17.76 1090 18.35 1114 18.94 1138 19.54 1161 20.13 1184 20.74 — —
16,000 1082 19.54 1106 20.16 1129 20.77 1151 21.38 1174 22.00 1196 22.61 — — — —
17,000 1124 22.15 1146 22.78 — — ——————————
18,000 ————————————————
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.43.63.84.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
7,000 1052 8.93 1079 9.42 1105 9.90 1131 10.39
8,000 1068 9.97 1096 10.47 1122 10.98 1148 11.50
9,000 1085 11.13 1112 11.66 1138 12.19 1164 12.72
10,000 1102 12.46 1129 13.00 1155 13.54 1181 14.09
11,000 1122 13.96 1148 14.51 1173 15.07 1198 15.64
12,000 1145 15.65 1170 16.21 1194 16.79 — —
13,000 1170 17.53 1194 18.12 — — — —
14,000 119819.64——————
15,000 ————————
16,000 ————————
17,000 ————————
18,000 ————————
Watts =
Bhp x 746
Motor Efficiency