Bryant 581A/B Product Information Manual page 237

581A300 (25 TONS) (Low Heat Units)*
Airflow
0.2
(Cfm)
Rpm Bhp Watts
6,500 786 2,658
7,000 842 3,208
7,500 898 3,827
8,000 955 4,518
8,500 1012 5,284
9,000 1069 6,127
9,500 1127 7,050
10,000 1184 8,057
10,500 1242 9,149 10.52
11,000 1299 10,331 11.88
11,500 1357 11,604 13.35
12,000 — —
12,500 — —
581A300 (25 TONS) (Low Heat Units)* (cont)
Airflow
1.2
(Cfm)
Rpm Bhp
6,500 988 3,900
7,000 1024 4,428
7,500 1063 5,031
8,000 1105 5,709
8,500 1149 6,465
9,000 1194 7,302
9,500 1242 8,222
10,000 1290 9,227
10,500 1340 10,321
11,000 1391 11,505
11,500 — —
12,000 — —
12,500 — —
LEGEND
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive ranges:
Low Range: 805-1007
High Range: 941-1176
All other rpms require field-supplied drive.
PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
0.4
Rpm Bhp Watts
3.06 819 2,835 3.26
3.69 871 3,386 3.89
4.40 925 4,006 4.61
5.20 979 4,699 5.40
6.08 1034 5,466 6.29
7.05 1090 6,312 7.26
8.11 1146 7,238 8.32
9.27 1202 8,247 9.49
1258 9,344 10.75
1315 10,529 12.11
1372 11,806 13.58
— — — —
— — — —
1.4
Watts Rpm Bhp Watts
4.49 1035 4,248 4.89
5.09 1066 4,760 5.48
5.79 1102 5,354 6.16
6.57 1140 6,025 6.93
7.44 1181 6,777 7.79
8.40 1225 7,608 8.75
9.46 1270 8,524 9.80
10.61 1316 9,525 10.96
11.87 1364 10,617 12.21
13.23 — — —
— — — —
— — — —
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External Static Pressure (in. wg)
0.6
Rpm Bhp Watts Rpm
857 3,052 3.51
905 3,599 4.14
955 4,217 4.85
1007 4,908 5.65 1037
1059 5,675 6.53 1087
1113 6,521 7.50 1138
1167 7,448 8.57 1190
1221 8,460 9.73 1243
1276 9,557 10.99 1296
1332 10,745 12.36 1350
— — —
— — —
— — —
External Static Pressure (in. wg)
1.6
Rpm Bhp Watts
1082 4,632 5.33
1109 5,124 5.89
1141 5,703 6.56
1176 6,364 7.32
1215 7,109 8.18
1256 7,935 9.13
1298 8,847 10.17
1343 9,845 11.32
1389 10,932 12.57
— — —
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Refer to page 230 for general Fan Performance Data notes.
NOTE: Maximum continuous bhp is:
Low Range: 5.75
High Range: 8.63
237
0.8
Bhp Watts Rpm
899 3,304 3.80 943
943 3,847 4.42 983
989 4,460 5.13 1026
5,148 5.92 1070
5,912 6.80 1117
6,757 7.77 1165
7,682 8.84 1215
8,693 10.00 1266
9,791 11.26 1318
10,979 12.63 1370
— — — —
— — — —
— — — —
1.8
Rpm Bhp Watts Rpm
1129 5,050 5.81 1177
1153 5,521 6.35 1197
1181 6,081 6.99 1221
1213 6,729 7.74 1250
1249 7,463 8.58 1283
1287 8,282 9.53 1319
1328 9,189 10.57 1358
1370 10,181 11.71 1399
— — — —
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1.0
Bhp Watts
3,586 4.12
4,123 4.74
4,733 5.44
5,416 6.23
6,176 7.10
7,017 8.07
7,940 9.13
8,948 10.29
10,046 11.55
11,232 12.92
— —
— —
— —
2.0
Bhp Watts
5,499 6.32
5,950 6.84
6,487 7.46
7,116 8.18
7,838 9.02
8,649 9.95
9,548 10.98
10,536 12.12
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