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PERFORMANCE DATA (cont)
FAN PERFORMANCE — 551A155,180 UNITS (cont)
LEGEND
*Standard low-medium static drive range is 834 to 1064 rpm. Alternate high-static drive range is
1161 to 1426. Other rpms require a field-supplied drive.
NOTES:
1. Maximum continuous bhp for the standard motor is 4.38. The maximum continuous watts
is 3775. Do not adjust motor rpm such that motor maximum bhp and/or watts is
exceeded at the maximum operating cfm.
2. See page 162 for general fan performance notes.
LEGEND
*Standard low-medium static drive range is 873 to 1021 rpm. Alternate high-static drive range is
1025 to 1700. Other rpms require a field-supplied drive.
NOTES:
1. Maximum continuous bhp for the standard motor is 6.13. The maximum continuous watts
is 5180. Do not adjust motor rpm such that motor maximum bhp and/or watts is
exceeded at the maximum operating cfm.
2. See page 162 for general fan performance notes.
551A155 WITH OPTIONAL MOTOR*
Cfm
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
3750
753 942 1.08 786 998 1.15 892 1192 1.37 991 1395 1.60 1084 1606 1.85
4000
747 1006 1.16 810 1118 1.29 911 1315 1.51 1007 1520 1.75 1097 1733 1.99
4250
741 1073 1.23 835 1248 1.44 932 1448 1.67 1024 1657 1.91 1111 1872 2.15
4500
761 1191 1.37 861 1389 1.60 954 1593 1.83 1043 1804 2.07 1127 2022 2.33
4750
792 1339 1.54 887 1541 1.77 977 1749 2.01 1063 1963 2.26 1145 2183 2.51
5000
823 1499 1.72 915 1705 1.96 1002 1916 2.20 1084 2133 2.45 1164 2356 2.71
5250
855 1671 1.92 943 1880 2.16 1027 2095 2.41 1107 2316 2.66 1184 2541 2.92
5500
887 1854 2.13 972 2068 2.38 1053 2286 2.63 1130 2510 2.89 1205 2739 3.15
5750
920 2050 2.36 1002 2268 2.61 1079 2490 2.86 1154 2717 3.12 1227 2948 3.39
6000
953 2258 2.60 1031 2480 2.85 1107 2706 3.11 1179 2936 3.38 1249 3171 3.65
6250
986 2480 2.85 1062 2706 3.11 1135 2935 3.38 1205 3169 3.64 1273 3406 3.92
551A155 WITH OPTIONAL MOTOR* (cont)
Cfm
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
3750
1172 1825 2.10 1256 2051 2.36 1337 2284 2.63 1414 2523 2.90 1488 2768 3.18
4000
1182 1954 2.25 1264 2181 2.51 1343 2415 2.78 1418 2655 3.05 1491 2901 3.34
4250
1194 2094 2.41 1274 2323 2.67 1351 2558 2.94 1424 2799 3.22 1496 3045 3.50
4500
1208 2246 2.58 1286 2476 2.85 1360 2713 3.12 1432 2955 3.40 1502 3202 3.68
4750
1223 2410 2.77 1299 2642 3.04 1371 2880 3.31 1442 3123 3.59 1510 3372 3.88
5000
1240 2585 2.97 1313 2819 3.24 1384 3059 3.52 1453 3304 3.80 1520 3554 4.09
5250
1258 2773 3.19 1329 3009 3.46 1398 3250 3.74 1465 3497 4.02 1530 3748 4.31
5500
1276 2972 3.42 1346 3211 3.69 1413 3455 3.97 1479 3703 4.26 ———
5750
1296 3185 3.66 1364 3426 3.94 1430 3671 4.22 ——————
6000
1317 3410 3.92 1383 3653 4.20 —————————
6250
1339 3648 4.20 ————————————
Bhp —
Brake Horsepower
FIOP —
Factory-Installed Option
Watts —
Input Watts to Motor
551A180*
Cfm
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
4500
753 1307 1.53 753 1307 1.53 784 1397 1.64 859 1635 1.92 928 1880 2.20
4800
747 1384 1.62 747 1384 1.62 806 1563 1.83 878 1808 2.12 946 2060 2.42
5100
741 1465 1.72 752 1500 1.76 828 1745 2.05 898 1996 2.34 964 2255 2.65
5700
735 1659 1.95 805 1895 2.22 876 2156 2.53 942 2423 2.84 1004 2696 3.16
6000
759 1854 2.18 832 2118 2.48 901 2388 2.80 965 2663 3.12 1026 2943 3.45
6300
790 2088 2.45 860 2360 2.77 926 2638 3.09 988 2920 3.43 1048 3208 3.76
6600
821 2340 2.74 888 2621 3.07 952 2906 3.41 1013 3196 3.75 1070 3491 4.10
6900
852 2611 3.06 917 2900 3.40 979 3194 3.75 1038 3492 4.10 1094 3794 4.45
7200
883 2903 3.40 946 3200 3.75 1006 3501 4.11 1063 3807 4.47 1118 4117 4.83
7500
914 3215 3.77 975 3521 4.13 1033 3830 4.49 1089 4143 4.86 1142 4461 5.23
551A180* (cont)
Cfm
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
4500
993 2133 2.50 1055 2394 2.81 1114 2662 3.12 1170 2938 3.45 1224 3220 3.78
4800
1009 2319 2.72 1070 2585 3.03 1127 2859 3.35 1183 3139 3.68 1236 3427 4.02
5100
1026 2521 2.96 1086 2794 3.28 1142 3073 3.60 1196 3359 3.94 1248 3650 4.28
5700
1064 2975 3.49 1120 3260 3.82 1174 3551 4.17 1226 3848 4.51 1277 4151 4.87
6000
1083 3228 3.79 1139 3520 4.13 1192 3817 4.48 1243 4119 4.83 1292 4427 5.19
6300
1104 3501 4.11 1158 3799 4.46 1210 4102 4.81 1260 4410 5.17 1309 4724 5.54
6600
1125 3791 4.45 1178 4095 4.80 1229 4405 5.17 1278 4720 5.54 1326 5039 5.91
6900
1147 4101 4.81 1199 4412 5.18 1249 4728 5.55 1297 5050 5.92 ———
7200
1170 4431 5.20 1221 4749 5.57 1270 5072 5.95 ——————
7500
1193 4781 5.61 1243 5107 5.99 —————————
Bhp —
Brake Horsepower
FIOP —
Factory-Installed Option
Watts —
Input Watts to Motor
0TFQ004-012
551A155-180