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Table 26 — Fan Performance, 48AW,AY060 — Horizontal 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
12,000 516 4.81 569 5.54 617 6.30 660 7.10 701 7.93 739 8.79 774 9.68 808 10.59
14,000 584 6.90 632 7.69 676 8.50 716 9.33 754 10.20 790 11.10 824 12.02 857 12.97
15,000 619 8.13 664 8.96 706 9.79 745 10.65 782 11.53 817 12.44 850 13.38 882 14.35
16,000 654 9.49 697 10.36 737 11.22 775 12.10 811 13.00 845 13.93 877 14.88 908 15.86
17,000 689 10.99 730 11.90 769 12.79 806 13.69 840 14.61 873 15.56 904 16.53 935 17.52
18,000 725 12.64 764 13.58 801 14.51 837 15.43 870 16.38 902 17.34 933 18.32 962 19.33
19,000 760 14.43 798 15.41 834 16.37 868 17.32 900 18.29 932 19.27 961 20.27 990 21.29
20,000 796 16.37 833 17.39 867 18.39 900 19.37 931 20.36 962 21.36 991 22.38 1019 23.42
21,000 832 18.47 867 19.54 901 20.56 932 21.57 963 22.59 992 23.61 1020 24.65 1048 25.71
22,000 869 20.74 902 21.84 934 22.90 965 23.94 995 24.98 1023 26.03 1051 27.09 1077 28.17
23,000 905 23.17 937 24.31 968 25.40 998 26.48 1027 27.55 1055 28.62 1081 29.70 1107 30.79
24,000 942 25.78 973 26.95 1003 28.08 1032 29.18 1059 30.28 1086 31.38 1113 32.48 1138 33.59
25,000 978 28.56 1008 29.77 1037 30.93 1065 32.07 1092 33.20 1119 34.32 1144 35.44 1169 36.58
26,000 1015 31.52 1044 32.76 1072 33.96 1099 35.13 1125 36.29 1151 37.44 1176 38.59 — —
27,000 1052 34.66 1080 35.94 1107 37.18 1133 38.38 1159 39.57 1184 40.75 — — — —
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
12,000 841 11.52 872 12.46 901 13.42 930 14.38 958 15.36 985 16.34 1011 17.33 1036 18.33
14,000 888 13.94 917 14.92 946 15.92 974 16.94 1001 17.97 1027 19.01 1052 20.06 1077 21.12
15,000 912 15.33 941 16.34 970 17.36 997 18.40 1024 19.45 1049 20.51 1074 21.58 1099 22.67
16,000 938 16.86 966 17.88 994 18.93 1021 19.98 1047 21.05 1072 22.14 1097 23.23 1121 24.34
17,000 964 18.54 992 19.58 1019 20.63 1045 21.70 1071 22.79 1096 23.89 1120 25.01 1144 26.13
18,000 990 20.36 1018 21.41 1045 22.48 1070 23.57 1096 24.67 1120 25.79 1144 26.93 1167 28.07
19,000 1018 22.34 1045 23.40 1071 24.49 1096 25.59 1121 26.71 1145 27.84 1169 28.99 1192 30.16
20,000 1046 24.48 1072 25.56 1098 26.66 1123 27.77 1147 28.90 1171 30.05 1194 31.21 — —
21,000 1074 26.78 1100 27.87 1125 28.99 1150 30.12 1173 31.26 1197 32.42 — — — —
22,000 1103 29.26 1129 30.36 1153 31.49 1177 32.63 — — — — — — — —
23,000 1133 31.90 1157 33.02 1181 34.16 ——————————
24,000 1163 34.72 1187 35.86 — — ——————————
25,000 119337.72——————————————
26,000 ————————————————
27,000 ————————————————
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.43.63.84.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
12,000 1061 19.33 1085 20.34 1108 21.35 1131 22.36
14,000 1101 22.18 1125 23.25 1148 24.33 1170 25.42
15,000 1122 23.76 1146 24.86 1168 25.97 1191 27.08
16,000 1144 25.45 1167 26.58 1190 27.71 — —
17,000 1167 27.27 1190 28.42 — — — —
18,000 119029.23——————
19,000 ————————
20,000 ————————
21,000 ————————
22,000 ————————
23,000 ————————
24,000 ————————
25,000 ————————
26,000 ————————
27,000 ————————
Watts =
Bhp x 746
Motor Efficiency