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Table 24 — Fan Performance, 48AW,AY035 — 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
7,000 455 2.15 508 2.52 558 2.90 605 3.29 650 3.69 693 4.10 734 4.52 774 4.95
8,000 505 2.92 553 3.32 598 3.73 641 4.14 682 4.56 722 4.99 761 5.43 798 5.87
9,000 556 3.85 599 4.28 641 4.72 680 5.15 719 5.60 756 6.04 792 6.50 827 6.96
10,000 608 4.96 648 5.42 686 5.87 723 6.34 758 6.81 793 7.28 826 7.75 859 8.24
11,000 661 6.26 698 6.74 733 7.22 767 7.71 800 8.20 832 8.70 864 9.19 895 9.70
12,000 715 7.76 749 8.25 781 8.76 813 9.27 844 9.79 874 10.31 904 10.83 933 11.35
13,000 769 9.46 800 9.98 831 10.51 861 11.05 890 11.59 918 12.13 946 12.67 974 13.22
14,000 824 11.39 853 11.92 881 12.48 909 13.03 937 13.60 964 14.16 990 14.73 1016 15.30
15,000 879 13.54 906 14.10 933 14.67 959 15.25 985 15.84 1010 16.42 1035 17.01 1060 17.60
16,000 934 15.94 959 16.52 984 17.11 1009 17.70 1034 18.31 1058 18.92 1082 19.53 1105 20.14
17,000 989 18.58 1013 19.18 1037 19.79 1060 20.41 1084 21.03 1107 21.66 1129 22.29 1151 22.92
18,000 1044 21.49 1067 22.10 1090 22.73 1112 23.37 — — — — — — — —
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
7,000 811 5.39 847 5.83 882 6.29 915 6.75 947 7.21 977 7.68 1007 8.15 1035 8.63
8,000 834 6.33 869 6.79 902 7.26 935 7.74 966 8.22 997 8.71 1026 9.21 1055 9.71
9,000 861 7.44 894 7.92 926 8.40 957 8.90 988 9.40 1017 9.90 1046 10.42 1075 10.94
10,000 891 8.73 922 9.22 953 9.72 983 10.23 1012 10.75 1041 11.27 1069 11.80 1096 12.33
11,000 925 10.20 954 10.72 983 11.24 1012 11.76 1040 12.29 1067 12.83 1094 13.37 1120 13.92
12,000 961 11.88 989 12.41 1017 12.95 1044 13.49 1070 14.04 1096 14.59 1122 15.15 1147 15.71
13,000 1000 13.76 1027 14.32 1053 14.87 1078 15.43 1104 16.00 1129 16.57 1153 17.14 1177 17.72
14,000 1041 15.86 1066 16.44 1091 17.01 1116 17.59 1140 18.18 1163 18.76 1187 19.35 — —
15,000 1084 18.19 1108 18.79 1131 19.38 1155 19.98 1178 20.58 — — — — — —
16,000 1128 20.75 1151 21.37 1173 21.98 1196 22.60 — — — — — — — —
17,000 ————————————————
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 1063 9.11 1090 9.60 1115 10.09 1141 10.58
8,000 1082 10.21 1109 10.72 1135 11.23 1161 11.75
9,000 1102 11.46 1129 11.99 1155 12.52 1180 13.05
10,000 1123 12.87 1149 13.42 1175 13.97 1200 14.52
11,000 1146 14.47 1172 15.03 1197 15.60 — —
12,000 1172 16.28 1197 16.85 — — — —
13,000 ————————
14,000 ————————
15,000 ————————
16,000 ————————
17,000 ————————
18,000 ————————
Watts =
Bhp x 746
Motor Efficiency