Maximum Continuous Bhp Is 1.30 For Single-Phase Standard Motors; 2.40 For 3-Phase; Standard Motors; And 2.90 For High-Static Motors; Motor Drive Range: 1020 To 1460 Rpm For Single-Phase Standard Motors; 1120 To 1585 For; See Page 93 For General Fan Performance Notes - Bryant DURAPAC 551B User Manual

551B048 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)
Airflow
0.2 0.4
(Cfm)
Rpm Bhp Rpm
1200 590 0.20 723
1300 615 0.23 744
1400 642 0.27 766
1500 670 0.31 788
1600 699 0.36 811
1700 728 0.42 836
1800 759 0.48 860
1900 790 0.55 886
2000 836 0.62 913
LEGEND
— Brake Horsepower Input to Fan
Bhp
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
551B060 (5 TONS) STANDARD MOTOR (BELT DRIVE) — SINGLE-PHASE UNITS
Airflow
0.1
(Cfm)
Rpm Bhp Rpm
1500 665 0.31 729
1600 703 0.36 763
1700 741 0.40 801
1800 765 0.45 821
1900 802 0.45 854
2000 840 0.60 888
2100 878 0.69 923
2200 916 0.78 958
2300 954 0.89 993
2400 993 1.00 1029
2500 1031 1.13 1066
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
551B060 (5 TONS) STANDARD MOTOR (BELT DRIVE) — THREE-PHASE UNITS
Airflow
0.1
(Cfm)
Rpm Bhp Rpm
1500 665 0.31 729
1600 703 0.36 763
1700 741 0.40 801
1800 765 0.45 821
1900 802 0.45 854
2000 840 0.60 888
2100 878 0.69 923
2200 916 0.78 958
2300 954 0.89 993
2400 993 1.00 1029
2500 1031 1.13 1066
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates a field-supplied drive is required. (See Note 4.)
2. indicates field-supplied motor and drive are required.
551B060 (5 TONS) HIGH-STATIC MOTOR (BELT DRIVE)
Airflow
0.2 0.4
(Cfm)
Rpm Bhp Rpm
1500 722 0.33 840
1600 754 0.38 867
1700 787 0.44 895
1800 821 0.51 923
1900 854 0.58 953
2000 900 0.66 984
2100 923 0.75 1015
2200 958 0.85 1046
2300 993 0.96 1079
2400 1029 1.07 1112
2500 1066 1.20 1145
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
0.6 0.8
Bhp Rpm Bhp Rpm Bhp
0.30 828 0.42 924 0.55
0.35 849 0.47 940 0.60
0.39 870 0.52 959 0.66
0.44 892 0.58 980 0.72
0.49 913 0.64 1001 0.79
0.55 935 0.71 1023 0.86
0.62 957 0.78 1044 0.94
0.69 980 0.86 1066 1.03
0.77 1004 0.94 1088 1.12
0.2 0.4 0.6
Bhp Rpm Bhp Rpm
0.35 843 0.47 940
0.40 872 0.53 965
0.47 902 0.60 993
0.51 923 0.65 1019
0.58 953 0.73 1046
1073
0.66 984 0.82
0.75 1015 0.91 1101
0.85 1046 1.01 1129
1079 1.13 1160
0.96
1.07 1112 1.25 1190
1.20 1145 1.39 1220
0.2 0.4 0.6
Bhp Rpm Bhp Rpm
0.35 843 0.47 940
0.40 872 0.53 965
0.47 902 0.60 993
0.51 923 0.65 1019
0.58 953 0.73 1046
0.66 984 0.82 1073
0.75 1015 0.91 1101
1129
0.85 1046 1.01
0.96 1079 1.13 1160
1.07 1112 1.25 1190
1.20 1145 1.39 1220
0.6 0.8
Bhp Rpm Bhp Rpm Bhp
0.46 937 0.59 1027 0.74
0.52 963 0.65 1052 0.81
0.58 991 0.73 1075 0.88
0.65 1019 0.81 1099 0.96
0.73 1046 0.90 1126 1.06
0.82 1073 0.99 1154 1.16
0.91 1101 1.08 1182 1.27
1.01 1129 1.19 1209 1.39
1.13 1160 1.31 1237 1.51
1.25 1190 1.43 1264 1.63
1.39 1220 1.57 1292 1.77
External Static Pressure (in. wg)
1.0 1.2
Rpm Bhp Rpm Bhp Rpm
999 0.66 1036 0.68 1073
1025 0.74 1090 0.84 1121
1042 0.81 1118 0.95 1175
1060 0.88 1136 1.04 1205
1080 0.95 1153 1.12 1224
1101 1.03 1172 1.20 1241
1122 1.11 1192 1.29 1258
1143 1.21 1214 1.39 1279
1165 1.31 1235 1.49 1300
3. Maximum continuous bhp is 1.20 for standard motors; 2.40 for high-static motors.
4. Motor drive range: 840 to 1185 rpm for standard motors; 1075 to 1455 rpm for high-static
motors. All other rpms require field-supplied drive.

5. See page 93 for general fan performance notes.

External Static Pressure (in. wg)
0.8 1.0
Bhp Rpm Bhp Rpm
0.60 1026 0.74 1108
0.66 1049 0.81 1130
0.75 1077 0.89 1152
0.81 1099 0.96 1178
0.90 1126 1.06 1201
0.99 1154 1.16 1226
1.08 1182 1.27 1252
1.19 1209 1.39 1280
1.31 1237 1.51 1309
1.43 1264 1.63 1336
1.57 1292 1.77 1363

3. Maximum continuous bhp is 1.30 for single-phase standard motors; 2.40 for 3-phase

standard motors; and 2.90 for high-static motors.

4. Motor drive range: 1020 to 1460 rpm for single-phase standard motors; 1120 to
1585 rpm for 3-phase standard motors, and 1300 to 1685 rpm for high-static motors. All
other rpms require field-supplied drive.
5. See page 93 for general fan performance notes.
External Static Pressure (in. wg)
0.8 1.0
Bhp Rpm Bhp Rpm
0.60 1026 0.74 1108
0.66 1049 0.81 1130
0.75 1077 0.89 1152
0.81 1099 0.96 1178
0.90 1126 1.06 1201
0.99 1154 1.16 1226
1.08 1182 1.27 1252
1.19 1209 1.39 1280
1.31 1237 1.51 1309
1.43 1264 1.63 1336
1.57 1292 1.77 1363
3. Maximum continuous bhp is 1.30 for single-phase standard motors; 2.40 for 3-phase
standard motors; and 2.90 for high-static motors.
4. Motor drive range: 1020 to 1460 rpm for single-phase standard motors; 1120 to
1585 rpm for 3-phase standard motors; and 1300 to 1685 rpm for high-static motors. All
other rpms require field-supplied drive.
5. See page 93 for general fan performance notes.
External Static Pressure (in. wg)
1.0 1.2
Rpm Bhp Rpm Bhp Rpm
1108 0.90 1186 1.08 1263
1130 0.97 1205 1.15 1278
1154 1.06 1228 1.23 1296
1178 1.14 1249 1.32 1316
1201 1.23 1274 1.43 1338
1226 1.33 1297 1.53 1363
1252 1.45 1320 1.64 1388
1280 1.58 1345 1.77 1410
1309 1.71 1372 1.91 1434
1339 1.80 1400 2.06 1459
1363 2.00 1428 2.22 1486
3. Maximum continuous bhp is 1.30 for single-phase standard motors; 2.40 for 3-phase
standard motors; and 2.90 for high-static motors.

4. Motor drive range: 1020 to 1460 rpm for single-phase standard motors; 1120 to 1585 for

3-phase standard motors; and 1300 to 1685 rpm for high-static motors. All other rpms
require field-supplied drive.
5. See page 93 for general fan performance notes.
90
1.4 1.6 1.8
Bhp Rpm Bhp Rpm Bhp
0.71 1109 0.75 1138 0.79
0.87 1159 0.90 1193 0.95
1.06 1206 1.09 1244 1.12
1.19 1258 1.30 1289 1.34
1.29 1287 1.45 1337 1.56
1.38 1307 1.56 1366 1.73
1.48 1323 1.67 1385 1.86
1.58 1341 1.78 1402 1.98
1.69 1361 1.90 1419 2.10
1.2 1.4
Bhp Rpm Bhp Rpm Bhp
0.89 1187 1.06 1202 1.18
0.97 1206 1.14 1275 1.32
1.05 1226 1.23 1298 1.41
1.14 1249 1.32 1316 1.52
1.23 1274 1.43 1338 1.62
1.33 1297 1.53 1363 1.73
1.45 1320 1.64 1388 1.85
1.58 1345 1.77 1410 1.97
1.71 1372 1.91 1434 2.11
1.85 1400 2.06 1459 2.26
2.00 1428 2.22 1486 2.43
1.2 1.4
Bhp Rpm Bhp Rpm Bhp
0.89 1187 1.06 1202 1.18
0.97 1206 1.14 1275 1.32
1.05 1226 1.23 1298 1.41
1.14 1249 1.32 1316 1.52
1.23 1274 1.43 1338 1.62
1.33 1297 1.53 1363 1.73
1.45 1320 1.64 1388 1.85
1.58 1345 1.77 1410 1.97
1.71 1372 1.91 1434 2.11
1.85 1400 2.06 1459 2.26
2.00 1428 2.22 1486 2.43
1.4 1.6 1.8
Bhp Rpm Bhp Rpm
1343 1.58 1431
1.30
1.35 1350 1.61 1424
1.42 1364 1.64 1432
1.52 1382 1.72 1447
1.62 1402 1.80 1464
1.73 1424 1.94 1484
1.80 1448 2.07 1505
1.97 1473 2.20 1529
2.11 1496 2.34 1554
2.26 1519 2.48 1578
2.43 1543 2.65 1600
2.0
Rpm Bhp
1162 0.84
1218 1.01
1270 1.19
1316 1.43
1365 1.66
1395 1.84
1414 1.98
1432 2.11
1449 2.24
1.6
Rpm Bhp
1079 1.10
1281 1.44
1359 1.60
1382 1.72
1402 1.83
1424 1.94
1448 2.07
1473 2.20
1496 2.34
1519 2.48
1543 2.65
1.6
Rpm Bhp
1079 1.10
1281 1.44
1359 1.60
1382 1.72
1402 1.83
1424 1.94
1448 2.07
1473 2.20
1496 2.34
1519 2.48
1543 2.65
2.0
Bhp Rpm Bhp
1.79 1480 1.98
1.80 1473 1.99
1.89 1481 2.09
1.95 1497 2.16
2.05 1514 2.27
2.16 1535 2.39
2.29 1557 2.53
2.43 1581 2.69
2.58 1607 2.85
2.76 1632 3.05
2.89 1655 3.20