Bryant 581A Installation And Service Instructions Manual page 20

Table 8 — Fan Performance — 581A155300 (High Heat Units with Optional Indoor Fan Motor)
CFM 0.2
Rpm Watts Bhp
3750 753 942 1.08
4000 764 1035 1.19
4250 798 1177 1.35
4500 832 1331 1.53
4750 868 1498 1.72
5000 903 1677 1.93
5250 939 1871 2.15
976 2077 2.39
5500
5750 1012 2298 2.64
1049 2533 2.91
6000
CFM 1.2
Rpm Watts Bhp
3750 1227 1970 2.27
4000 1241 2116 2.43
1258 2274 2.62
4250
4500 1275 2445 2.81
1295 2629 3.02
4750
1315 2826 3.25
5000
1337 3037 3.49
5250
1360 3262 3.75
5500
5750 1384 3500 4.03
1410 3753 4.32
6000
LEGEND
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*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.
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
Rpm Watts Bhp Rpm
844 1101 1.27 949
872 1236 1.42 972
901 1382 1.59 997
931 1540 1.77 1024
962 1711 1.97 1051
994 1896 2.18 1079
1026 2093 2.41 1109
1059 2304 2.65 1139
1093 2529 2.91 1170
1127 2768 3.18 1201
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
Rpm Watts Bhp Rpm
1310 2206 2.54 1390
1323 2353 2.71 1400
1337 2513 2.89 1413
1352 2687 3.09 1426
1369 2873 3.30 1442
1388 3073 3.53 1458
1408 3286 3.78 1477
1429 3513 4.04 1496
1452 3755 4.32 —
— — — —
—20—
0.6 0.8
Watts Bhp Rpm Watts
1306 1.50 1047 1520
1444 1.66 1067 1661
1594 1.83 1089 1814
1757 2.02 1112 1980
1932 2.22 1136 2158
2120 2.44 1161 2350
2321 2.67 1188 2554
2536 2.92 1215 2773
2765 3.18 1244 3005
3008 3.46 1273 3252
1.6 1.8
Watts Bhp Rpm Watts
2448 2.82 1467 2696
2597 2.99 1475 2847
2759 3.17 1486 3010
2934 3.37 1498 3187
3122 3.59 1511 3377
3324 3.82 1527 3581
3540 4.07 — —
3769 4.34 — —
— — — —
— — — —
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.
1.0
Bhp Rpm Watts Bhp
1.75 1139 1741 2.00
1.91 1156 1885 2.17
2.09 1175 2041 2.35
2.28 1195 2209 2.54
2.48 1217 2390 2.75
2.70 1240 2585 2.97
2.94 1264 2793 3.21
3.19 1289 3015 3.47
3.46 1315 3250 3.74
3.74 1342 3500 4.03
2.0
Bhp Rpm Watts Bhp
3.10 1541 2951 3.39
3.27 1548 3102 3.57
3.46 — — —
3.67 — — —
3.88 — — —
4.12 — — —
— — — —
— — — —
— — — —
— — — —