Bryant 581A/B Product Information Manual page 230

581A300 (25 TONS) (High Heat Units)*
Airflow
0.2
(Cfm)
Rpm Watts
6,500 775 2,600
7,000 826 3,115
7,500 878 3,690
8,000 929 4,326
8,500 981 5,029
9,000 1033 5,799
9,500 1085 6,640
10,000 1137 7,553
10,500 1190 8,542
11,000 1242 9,609 11.05
11,500 1294 10,756 12.37
12,000 1347 11,985 13.78
12,500 — —
581A300 (25 TONS) (High Heat Units)* (cont)
Airflow
1.2
(Cfm)
Rpm Watts
6,500 1004 4,016
7,000 1041 4,559
7,500 1081 5,179
8,000 1124 5,875
8,500 1168 6,647
9,000 1214 7,495
9,500 1260 8,421
10,000 1308 9,425 10.84
10,500 1356 10,510 12.09
11,000 — —
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.
1. Static pressure losses (i.e., EconoMi$er IV) must be added to
external static pressure before entering Fan Performance table.
2. Interpolation is permissible. Do not extrapolate.
3. Fan performance is based on wet coils, clean filters, and casing
losses. See Accessory/FIOP Static Pressure table on pages 241
and 243.
4. Extensive motor and drive testing on these units ensures that the
full horsepower and watts range of the motor can be utilized with
PERFORMANCE DATA (cont)
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)
Available External Static Pressure (in. wg)
0.4
Bhp Rpm Watts Bhp
2.99 825 2,872 3.30
3.58 875 3,408 3.92
4.24 925 4,006 4.61
4.98 975 4,667 5.37
5.78 1026 5,395 6.20
6.67 1076 6,191 7.12
7.64 1128 7,058 8.12
8.69 1179 8,000 9.20
9.82 1230 9,016 10.37
1282 10,111 11.63
1333 11,287 12.98
— — —
— — — —
Available External Static Pressure (in. wg)
1.4
Bhp Rpm Watts Bhp
4.62 1050 4,374 5.03
5.24 1083 4,902 5.64
5.96 1120 5,512 6.34
6.76 1160 6,203 7.13
7.64 1202 6,974 8.02
8.62 1245 7,825 9.00
9.69 1290 8,756 10.07
1337 9,768 11.23
1384 10,862 12.49
— — — —
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— — — —
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GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES
0.6
Rpm Watts Bhp Rpm
871 3,130 3.60 915
918 3,679 4.23 959
966 4,292 4.94 1005
1015 4,970 5.72 1052
1064 5,717 6.58 1100
1114 6,533 7.51 1148
1164 7,421 8.54 1198
1214 8,385 9.64 1247
1265 9,424 10.84 1297
1316 10,542 12.12 1347
1367 11,741 13.50 —
— — — —
— — — —
1.6
Rpm Watts Bhp Rpm
1098 4,769 5.48 1145
1126 5,277 6.07 1170
1159 5,872 6.75 1199
1196 6,553 7.54 1233
1235 7,318 8.42 1269
1277 8,168 9.39 1309
1320 9,100 10.47 1351
1365 10,116 11.63 1394
— — — —
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Refer to this page for general Fan Performance Data notes.
NOTE: Maximum continuous bhp is:
Low Range: 5.75
High Range: 8.63
confidence. Using the fan motors up to the watts or bhp rating
shown will not result in nuisance tripping or premature motor fail-
ure. Unit warranty will not be affected.
5. Use of a field-supplied motor may affect wire size. Contact your
Bryant representative for details.
6. Field-supplied drive requires changing belt and motor pulley to
meet desired airflow. See application data or contact your local
Bryant representative for details.
230
0.8 1.0
Watts Bhp Rpm Watts
3,400 3.91 959 3,692
3,954 4.55 1000 4,245
4,575 5.26 1043 4,868
5,265 6.06 1088 5,564
6,025 6.93 1134 6,332
6,856 7.89 1181 7,173
7,761 8.93 1229 8,091
8,741 10.05 1278 9,086
9,799 11.27 1327 10,158
10,937 12.58 1376 11,311
— — — —
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— — — —
1.8 2.0
Watts Bhp Rpm Watts
5,195 5.97 1192 5646
5,685 6.54 1214 6122
6,261 7.20 1240 6680
6,928 7.97 1270 7329
7,684 8.84 1304 8071
8,527 9.81 1341 8905
9,457 10.88 1381 9830
10,474 12.05 — —
— — — —
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— — — —
— — — —
— — — —
Bhp
4.25
4.88
5.60
6.40
7.28
8.25
9.31
10.45
11.68
13.01
—
—
—
Bhp
6.49
7.04
7.68
8.43
9.28
10.24
11.31
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