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Table 22 — Fan Performance, 48AJ,AK060 — 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
12,000 476 4.33 534 5.04 585 5.78 632 6.56 674 7.39 714 8.24 751 9.12 786 10.02
14,000 536 6.19 588 6.96 636 7.74 680 8.56 720 9.41 758 10.30 793 11.21 827 12.15
15,000 566 7.28 617 8.09 662 8.90 704 9.73 744 10.59 781 11.50 816 12.42 849 13.38
16,000 597 8.48 645 9.34 689 10.17 730 11.02 768 11.90 804 12.82 839 13.76 871 14.73
17,000 628 9.80 674 10.71 717 11.58 756 12.45 793 13.34 829 14.27 862 15.23 894 16.21
18,000 659 11.25 704 12.21 745 13.11 783 14.00 819 14.91 853 15.85 886 16.82 918 17.82
19,000 691 12.82 734 13.84 773 14.77 810 15.69 845 16.62 879 17.58 911 18.56 942 19.57
20,000 723 14.53 764 15.60 802 16.57 838 17.52 872 18.47 905 19.44 936 20.44 966 21.45
21,000 755 16.37 794 17.49 831 18.51 866 19.49 899 20.47 931 21.46 961 22.47 991 23.50
22,000 787 18.35 825 19.53 861 20.59 894 21.60 927 22.61 958 23.62 987 24.64 1016 25.69
23,000 819 20.48 856 21.71 890 22.81 923 23.87 954 24.90 985 25.93 1014 26.97 1042 28.03
24,000 851 22.75 887 24.04 920 25.19 952 26.28 983 27.34 1012 28.40 1041 29.46 1068 30.54
25,000 883 25.17 918 26.52 951 27.72 982 28.84 1011 29.94 1040 31.02 1068 32.11 1095 33.21
26,000 916 27.76 950 29.15 981 30.40 1011 31.57 1040 32.70 1068 33.81 1095 34.92 1122 36.04
27,000 948 30.49 981 31.95 1012 33.24 1041 34.46 1070 35.62 1097 36.76 1123 37.90 1149 39.04
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
12,000 819 10.93 851 11.85 881 12.78 911 13.72 939 14.67 967 15.62 993 16.58 1019 17.54
14,000 859 13.11 890 14.08 920 15.06 948 16.06 976 17.07 1003 18.08 1029 19.11 1054 20.13
15,000 881 14.36 911 15.35 940 16.36 968 17.38 996 18.41 1022 19.45 1048 20.50 1073 21.56
16,000 902 15.72 932 16.73 961 17.76 989 18.80 1016 19.86 1042 20.92 1067 22.00 1092 23.08
17,000 925 17.21 954 18.24 983 19.28 1010 20.34 1036 21.42 1062 22.51 1087 23.60 1112 24.71
18,000 948 18.84 977 19.88 1005 20.94 1032 22.01 1058 23.11 1083 24.21 1108 25.33 1132 26.46
19,000 971 20.60 1000 21.65 1027 22.72 1054 23.81 1080 24.92 1105 26.04 1129 27.18 1153 28.33
20,000 995 22.50 1023 23.57 1050 24.65 1076 25.76 1102 26.88 1126 28.01 1151 29.17 1174 30.33
21,000 1019 24.55 1047 25.63 1073 26.73 1099 27.84 1124 28.97 1149 30.13 1173 31.29 1196 32.47
22,000 1044 26.76 1071 27.84 1097 28.95 1123 30.08 1147 31.22 1172 32.39 1195 33.56 — —
23,000 1069 29.11 1096 30.21 1122 31.33 1147 32.47 1171 33.63 1195 34.80 — — — —
24,000 1095 31.63 1121 32.74 1146 33.87 1171 35.02 1195 36.19 — — — — — —
25,000 1121 34.31 1147 35.44 1171 36.58 1196 37.74 — — — — — — — —
26,000 1147 37.16 1172 38.30 1197 39.46 ——————————
27,000 1174 40.18 1199 41.34 — — ——————————
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.43.63.84.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
12,000 1045 18.51 1069 19.48 1093 20.45 1117 21.43
14,000 1079 21.17 1103 22.21 1126 23.26 1149 24.31
15,000 1097 22.63 1121 23.70 1144 24.78 1167 25.86
16,000 1116 24.17 1140 25.28 1162 26.38 1185 27.49
17,000 1135 25.83 1159 26.95 1181 28.09 — —
18,000 1156 27.60 1178 28.74 — — — —
19,000 1176 29.48 1199 30.65 — — — —
20,000 119731.50——————
21,000 ————————
22,000 ————————
23,000 ————————
24,000 ————————
25,000 ————————
26,000 ————————
27,000 ————————
Watts =
Bhp x 746
Motor Efficiency