Bryant 581A - Manual (Page 15)

AIR DELIVERY
581A155 (13 TON)
Airflow
(Cfm)
Standard Belt-Drive Motor
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 741 510 0.58 854 715 0.82 952 921 1.05 1041 1130 1.29 1124 1344 1.53
4000 773 647 0.74 882 859 0.98 978 1071 1.22 1064 1285 1.46 1145 1502 1.71
4250 806 796 0.91 912 1015 1.16 1004 1233 1.40 1089 1452 1.65 1167 1674 1.91
4500 839 958 1.09 942 1183 1.35 1032 1407 1.60 1114 1632 1.86 1191 1859 2.12
4750 873 1134 1.29 972 1365 1.56 1060 1595 1.82 1140 1825 2.08 1215 2056 2.34
5000 908 1323 1.51 1003 1560 1.78 1089 1796 2.05 1167 2032 2.32 1241 2268 2.58
5250 942 1527 1.74 1035 1769 2.02 1118 2011 2.29 1195 2252 2.57 1267 2494 2.84
5500 978 1745 1.99 1067 1992 2.27 1148 2240 2.55 1223 2487 2.83 1293 2733 3.11
5750 1013 1978 2.25 1099 2230 2.54 1179 2484 2.83 1252 2736 3.12 1321 2988 3.40
6000 1049 2227 2.54 1132 2483 2.83 1210 2742 3.12 1282 2999 3.42 1349 3257 3.71
6250 1085 2491 2.84 1166 2751 3.13 1241 3015 3.44 1312 3279 3.74 1378 3541 4.03
581A155 (13 TON) (co nt)
Airflow
(Cfm)
Standard Belt-Drive Motor
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 1203 1562 1.78 1277 1784 2.03 1349 2010 2.29 1417 2240 2.55 1483 2473 2.82
4000 1222 1724 1.96 1294 1950 2.22 1364 2180 2.48 1431 2413 2.75 1495 2650 3.02
4250 1242 1900 2.16 1313 2129 2.43 1381 2362 2.69 1446 2599 2.96 1509 2839 3.23
4500 1264 2089 2.38 1333 2322 2.65 1399 2558 2.91 1463 2799 3.19 1525 3042 3.47
4750 1286 2290 2.61 1354 2528 2.88 1419 2769 3.15 1482 3012 3.43 1542 3259 3.71
5000 1310 2507 2.86 1376 2748 3.13 1440 2992 3.41 1501 3240 3.69 1560 3489 3.98
5250 1335 2737 3.12 1399 2983 3.40 1461 3230 3.68 1522 3481 3.97 — — —
5500 1360 2981 3.40 1423 3231 3.68 1484 3483 3.97 1543 3737 4.26 — — —
5750 1386 3241 3.69 1448 3495 3.98 1508 3750 4.27 — — — — — —
6000 1413 3514 4.00 1474 3773 4.30 1532 4032 4.59 — — — — — —
6250 1440 3803 4.33 1500 4066 4.63 1558 4330 4.93 — — — — — —
LEGEND
Bhp — Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
NOTES:
1. Boldface indicates standard operating range.
2. Indicates field-supplied motor and drive required.
3. All other numbers indicate field-supplied drive required.
4.
indicates maximum bhp/watts of standard motor and drive.
5. Factory shipped motor drive range is 1194 to 1526 rpm. Other rpms
require a field-supplied drive.
6. Static pressure losses (i.e., economizer) must be added to external
static pressure before entering Air Delivery table. See page 18 for
accessory/FIOP static pressure information.
7. Interpolation is permissible. Do not extrapolate.
8. Maximum continuous bhp is 4.25 and the maximum continuous
watts are 3775. Extensive motor and drive testing on these units en-
sures that the full horsepower range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected.
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