Bryant SINGLE PACKAGE ROOFTOP ELECTRIC COOLING/GAS HEATING UNITS 581A - Manual (Page 20)

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Table 8 — Fan Performance — 581A155300 (High Heat Units with Optional Indoor Fan Motor)
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 optional motor is 4.38. The maxi-
mum 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. Static pressure losses (i.e., economizer) must be added to external
static pressure before entering Fan Performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and
casing losses. See Table 13 for accessory/FIOP static pressure
information.
5. Extensive motor and drive testing on these units ensures that the full
bhp and watts range of the motor can be utilized with confidence.
Using your fan motors up to the watts or bhp rating shown will not
result in nuisance tripping or premature motor failure. Unit warranty
will not be affected.
6. Use of a field-supplied motor may affect wiring size. Contact your
Bryant representative for details.
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 1.08 844 1101 1.27 949 1306 1.50 1047 1520 1.75 1139 1741 2.00
4000 764 1035 1.19 872 1236 1.42 972 1444 1.66 1067 1661 1.91 1156 1885 2.17
4250 798 1177 1.35 901 1382 1.59 997 1594 1.83 1089 1814 2.09 1175 2041 2.35
4500 832 1331 1.53 931 1540 1.77 1024 1757 2.02 1112 1980 2.28 1195 2209 2.54
4750 868 1498 1.72 962 1711 1.97 1051 1932 2.22 1136 2158 2.48 1217 2390 2.75
5000 903 1677 1.93 994 1896 2.18 1079 2120 2.44 1161 2350 2.70 1240 2585 2.97
5250 939 1871 2.15 1026 2093 2.41 1109 2321 2.67 1188 2554 2.94 1264 2793 3.21
5500 976 2077 2.39 1059 2304 2.65 1139 2536 2.92 1215 2773 3.19 1289 3015 3.47
5750 1012 2298 2.64 1093 2529 2.91 1170 2765 3.18 1244 3005 3.46 1315 3250 3.74
6000 1049 2533 2.91 1127 2768 3.18 1201 3008 3.46 1273 3252 3.74 1342 3500 4.03
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 1227 1970 2.27 1310 2206 2.54 1390 2448 2.82 1467 2696 3.10 1541 2951 3.39
4000 1241 2116 2.43 1323 2353 2.71 1400 2597 2.99 1475 2847 3.27 1548 3102 3.57
4250 1258 2274 2.62 1337 2513 2.89 1413 2759 3.17 1486 3010 3.46 — — —
4500 1275 2445 2.81 1352 2687 3.09 1426 2934 3.37 1498 3187 3.67 — — —
4750 1295 2629 3.02 1369 2873 3.30 1442 3122 3.59 1511 3377 3.88 — — —
5000 1315 2826 3.25 1388 3073 3.53 1458 3324 3.82 1527 3581 4.12 — — —
5250 1337 3037 3.49 1408 3286 3.78 1477 3540 4.07 — — — — — —
5500 1360 3262 3.75 1429 3513 4.04 1496 3769 4.34 — — — — — —
5750 1384 3500 4.03 1452 3755 4.32 — — — — — — — — —
6000 1410 3753 4.32 — — — — — — — — — — — —
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor