United Technologies Carrier Weathermaker 48A2, Controls, Start-Up, Operation, Service, And Troubleshooting

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Table 17 — Fan Performance — 48A4,A5035 Units
Table 18 — Fan Performance — 48A4,A5040 Units
LEGEND
Bhp — Brake Horsepower
edb — Entering Dry Bulb
ewb — Entering Wet Bulb
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. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited
by edb and ewb conditions and Humidi-MiZer operation.
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
7,000 553 2.59 602 2.92 648 3.26 691 3.61 732 3.95 770 4.29 807 4.63 842 4.96 875 5.29 907 5.62
8,000 612 3.45 656 3.81 698 4.17 738 4.53 776 4.90 812 5.27 847 5.63 881 6.00 913 6.36 944 6.72
9,000 672 4.47 712 4.86 750 5.24 787 5.62 823 6.01 857 6.39 890 6.78 922 7.17 953 7.56 983 7.95
10,000 733 5.67 769 6.08 805 6.48 839 6.88 872 7.28 904 7.69 935 8.10 966 8.51 995 8.92 1024 9.33
10,500 763 6.33 798 6.75 832 7.17 865 7.58 897 7.99 929 8.40 959 8.82 989 9.24 1017 9.66 1046 10.08
11,000 794 7.04 828 7.47 861 7.90 892 8.32 923 8.74 954 9.16 983 9.59 1012 10.01 1040 10.44 1067 10.87
12,000 855 8.60 887 9.06 918 9.51 948 9.95 977 10.39 1005 10.83 1033 11.27 1060 11.71 1087 12.16 1113 12.60
13,000 917 10.36 947 10.84 976 11.31 1004 11.77 1031 12.23 1058 12.69 1084 13.14 1110 13.60 1135 14.06 1160 14.52
14,000 980 12.32 1008 12.82 1035 13.31 1061 13.79 1087 14.27 1112 14.75 1137 15.22 1161 15.70 1185 16.17 1209 16.65
15,000 1042 14.49 1069 15.01 1094 15.52 1119 16.03 1143 16.53 1167 17.02 1191 17.51 1214 18.01 1237 18.50 1260 18.99
16,000 1105 16.88 1130 17.42 1154 17.96 1178 18.48 1201 19.00 1224 19.51 1246 20.02 1268 20.53 1290 21.04 — —
17,000 1168 19.49 1191 20.06 1214 20.61 1237 21.16 1259 21.69 1281 22.23 — — — — — — — —
17,500 1200 20.88 1222 21.46 1245 22.03 1267 22.58 1288 23.13 — — — — — — — — — —
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
7,000 937 5.94 967 6.26 995 6.57 1022 6.87 1048 7.18 1073 7.48 1098 7.78 1122 8.07 1145 8.36 1168 8.66
8,000 974 7.08 1003 7.43 1031 7.77 1058 8.12 1084 8.46 1109 8.79 1134 9.13 1158 9.46 1181 9.78 1204 10.11
9,000 1012 8.33 1041 8.72 1068 9.10 1094 9.47 1120 9.85 1145 10.22 1169 10.58 1193 10.95 1216 11.31 1239 11.66
10,000 1052 9.74 1080 10.15 1106 10.55 1132 10.96 1157 11.36 1182 11.76 1206 12.16 1229 12.55 1252 12.95 1275 13.34
10,500 1073 10.50 1100 10.92 1126 11.34 1151 11.75 1176 12.17 1201 12.59 1224 13.00 1248 13.41 1271 13.82 1293 14.22
11,000 1094 11.30 1120 11.73 1146 12.16 1171 12.59 1196 13.02 1220 13.45 1243 13.87 1266 14.30 1289 14.72 — —
12,000 1138 13.05 1163 13.50 1188 13.95 1212 14.40 1236 14.84 1259 15.30 1282 15.74 — — — — — —
13,000 1184 14.99 1208 15.45 1232 15.92 1255 16.39 1278 16.85 — — — — — — — — — —
14,000 1232 17.13 1255 17.61 1278 18.09 — — — — — — — — — — — — — —
15,000 1282 19.48 — — — — — — — — — — — — — — — — — —
16,000 — — — — — — — — — — — — — — — — — — — —
17,000 — — — — — — — — — — — — — — — — — — — —
17,500 — — — — — — — — — — — — — — — — — — — —
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
8,000 526 3.10 573 3.50 617 3.91 660 4.33 700 4.75 740 5.18 778 5.62 814 6.07 850 6.53 884 7.00
9,000 579 4.08 621 4.51 662 4.95 701 5.39 738 5.83 775 6.28 810 6.74 845 7.21 878 7.69 911 8.17
10,000 633 5.24 671 5.70 709 6.16 744 6.62 779 7.09 813 7.57 846 8.05 879 8.53 910 9.03 941 9.53
11,000 687 6.59 723 7.07 757 7.56 790 8.05 823 8.54 854 9.04 885 9.54 916 10.05 945 10.56 974 11.08
12,000 742 8.15 775 8.65 807 9.17 838 9.68 868 10.20 898 10.72 927 11.24 955 11.77 983 12.30 1011 12.84
13,000 797 9.92 827 10.45 857 10.98 887 11.52 915 12.07 943 12.61 970 13.15 997 13.70 1024 14.25 1050 14.81
14,000 852 11.92 881 12.47 909 13.03 936 13.59 963 14.15 990 14.72 1016 15.29 1041 15.86 1066 16.43 1091 17.01
15,000 908 14.15 935 14.72 961 15.31 987 15.89 1013 16.48 1038 17.06 1062 17.65 1086 18.25 1110 18.84 1134 19.44
16,000 964 16.63 989 17.23 1014 17.83 1039 18.43 1063 19.04 1086 19.65 1110 20.26 1133 20.88 1156 21.49 1178 22.11
17,000 1021 19.37 1044 19.98 1068 20.60 1091 21.23 1114 21.86 1136 22.49 1158 23.12 1180 23.76 1202 24.39 1223 25.03
18,000 1077 22.37 1099 23.01 1122 23.64 1144 24.29 1165 24.94 1187 25.59 1208 26.25 1229 26.90 1250 27.56 1270 28.22
19,000 1133 25.65 1155 26.30 1176 26.96 1197 27.62 1217 28.29 1238 28.96 — — — — — — — —
20,000 1190 29.21 — — — — — — — — — — — — — — — — — —
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
8,000 917 7.48 949 7.96 980 8.44 1010 8.94 1039 9.43 1067 9.93 1094 10.44 1121 10.95 1147 11.46 1172 11.98
9,000 942 8.66 973 9.16 1003 9.66 1033 10.17 1061 10.69 1089 11.21 1116 11.73 1142 12.26 1168 12.80 1193 13.33
10,000 971 10.03 1001 10.55 1030 11.06 1058 11.59 1086 12.12 1113 12.66 1139 13.20 1165 13.75 1190 14.30 1215 14.86
11,000 1003 11.60 1031 12.13 1059 12.67 1086 13.21 1112 13.75 1139 14.31 1164 14.86 1189 15.43 1214 15.99 1238 16.56
12,000 1038 13.38 1065 13.92 1091 14.47 1117 15.03 1142 15.59 1167 16.16 1192 16.73 1216 17.31 1240 17.89 1264 18.48
13,000 1075 15.37 1101 15.93 1126 16.50 1150 17.07 1175 17.65 1199 18.23 1222 18.82 1246 19.41 1269 20.00 1291 20.61
14,000 1115 17.59 1139 18.17 1163 18.75 1186 19.34 1210 19.94 1232 20.53 1255 21.14 1277 21.74 1300 22.35 — —
15,000 1157 20.04 1180 20.64 1202 21.24 1225 21.85 1247 22.46 1269 23.07 1290 23.69 — — — — — —
16,000 1200 22.73 1222 23.35 1243 23.97 1265 24.60 1286 25.23 — — — — — — — — — —
17,000 1245 25.67 1266 26.32 1286 26.96 — — — — — — — — — — — — — —
18,000 1290 28.88 — — — — — — — — — — — — — — — — — —
19,000 — — — — — — — — — — — — — — — — — — — —
20,000 — — — — — — — — — — — — — — — — — — — —
Watts =
Bhp x 746
Motor efficiency