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Table 25 — Fan Performance, 48AW,AY040,050 — 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
8,000 536 3.18 582 3.58 626 3.99 668 4.41 708 4.83 747 5.27 785 5.71 821 6.16
9,000 588 4.17 630 4.60 670 5.04 709 5.48 746 5.93 782 6.38 818 6.84 852 7.31
10,000 642 5.35 680 5.80 717 6.27 753 6.73 787 7.20 821 7.68 854 8.16 886 8.65
11,000 696 6.72 732 7.20 766 7.69 799 8.18 831 8.67 863 9.17 893 9.68 923 10.18
12,000 751 8.29 784 8.80 816 9.32 847 9.83 877 10.35 906 10.87 935 11.40 964 11.92
13,000 807 10.09 837 10.62 867 11.16 896 11.70 924 12.24 952 12.78 979 13.33 1006 13.88
14,000 863 12.12 891 12.67 919 13.23 946 13.79 973 14.36 999 14.92 1025 15.49 1050 16.06
15,000 919 14.38 946 14.96 972 15.54 997 16.12 1023 16.71 1047 17.30 1072 17.89 1096 18.48
16,000 975 16.90 1000 17.49 1025 18.09 1049 18.70 1073 19.31 1097 19.92 1120 20.53 1143 21.15
17,000 1032 19.67 1056 20.29 1079 20.91 1102 21.54 1125 22.17 1147 22.80 1169 23.44 1191 24.07
18,000 1089 22.71 1111 23.35 1134 23.99 1155 24.64 1177 25.29 1198 25.95 1219 26.60 1240 27.26
19,000 1146 26.04 1167 26.69 1188 27.35 1209 28.02 1230 28.69 1250 29.37 1270 30.04 1290 30.72
20,000 1203 29.65 1224 30.32 1244 31.00 1263 31.69 1283 32.38 — — — — — —
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
8,000 857 6.63 891 7.09 923 7.57 955 8.05 986 8.54 1016 9.03 1045 9.53 1073 10.03
9,000 885 7.79 918 8.28 949 8.77 980 9.27 1010 9.77 1039 10.28 1067 10.80 1095 11.32
10,000 917 9.14 948 9.65 978 10.15 1008 10.67 1036 11.19 1064 11.72 1092 12.25 1119 12.79
11,000 953 10.70 982 11.21 1010 11.74 1038 12.27 1066 12.81 1093 13.35 1119 13.90 1145 14.45
12,000 991 12.46 1019 12.99 1046 13.53 1072 14.08 1098 14.63 1124 15.19 1149 15.76 1174 16.32
13,000 1032 14.43 1058 14.99 1084 15.55 1109 16.11 1134 16.68 1158 17.26 1182 17.84 1206 18.42
14,000 1075 16.64 1100 17.21 1124 17.79 1148 18.38 1171 18.97 1195 19.55 1218 20.15 1241 20.75
15,000 1120 19.08 1143 19.68 1166 20.27 1189 20.88 1211 21.49 1234 22.09 1256 22.71 1277 23.32
16,000 1165 21.76 1188 22.38 1210 23.00 1231 23.62 1253 24.25 1274 24.88 1295 25.51 — —
17,000 1213 24.71 1234 25.35 1255 25.99 1276 26.63 1296 27.27 — — — — — —
18,000 1261 27.92 1281 28.58 — — ——————————
19,000 ————————————————
20,000 ————————————————
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.43.63.84.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
8,000 1100 10.54 1126 11.05 1152 11.56 1177 12.08
9,000 1122 11.85 1148 12.38 1174 12.91 1199 13.45
10,000 1145 13.33 1171 13.88 1196 14.43 1221 14.99
11,000 1171 15.01 1196 15.57 1220 16.14 1245 16.72
12,000 1199 16.90 1223 17.48 1247 18.06 1270 18.65
13,000 1230 19.01 1253 19.60 1276 20.20 1299 20.80
14,000 1263 21.35 1285 21.96 — — — —
15,000 129923.94——————
16,000 ————————
17,000 ————————
18,000 ————————
19,000 ————————
20,000 ————————
Watts =
Bhp x 746
Motor Efficiency