Bryant SINGLE PACKAGE ROOFTOP ELECTRIC COOLING/GAS HEATING UNITS 581A - Manual (Page 19)

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Table 7 — Fan Performance — 581A155300 (High Heat Units with Standard 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 standard motor is 3.13. The maxi-
mum continuous watts is 2700. 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 753 915 1.05 844 1077 1.24 949 1287 1.48 1047 1507 1.73 1139 1735 2.00
4000 764 1006 1.16 872 1211 1.39 972 1425 1.64 1067 1648 1.90 1156 1880 2.16
4250 798 1147 1.32 901 1357 1.56 997 1576 1.81 1089 1803 2.07 1175 2038 2.34
4500 832 1301 1.50 931 1516 1.74 1024 1739 2.00 1112 1970 2.27 1195 2209 2.54
4750 868 1467 1.69 962 1688 1.94 1051 1916 2.20 1136 2151 2.47 1217 2393 2.75
5000 903 1648 1.89 994 1873 2.15 1079 2106 2.42 1161 2345 2.70 1240 2590 2.98
5250 939 1842 2.12 1026 2073 2.38 1109 2309 2.66 1188 2553 2.9 — — —
5500 976 2050 2.36 1059 2286 2.63 1139 2528 2.91 — — — — — —
5750 1012 2273 2.61 1093 2514 2.89 — — — — — — — — —
6000 1049 2511 2.89 — — — — — — — — — — — —
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 1973 2.27 1310 2218 2.55 1390 2471 2.84 — — — — — —
4000 1241 2120 2.44 1323 2368 2.72 1400 2623 3.02 — — — — — —
4250 1258 2281 2.62 1337 2531 2.91 — — — — — — — — —
4500 1275 2454 2.82 — — — — — — — — — — — —
4750 1295 2642 3.04 — — — — — — — — — — — —
5000 — — — — — — — — — — — — — — —
5250 — — — — — — — — — — — — — — —
5500 — — — — — — — — — — — — — — —
5750 — — — — — — — — — — — — — — —
6000 — — — — — — — — — — — — — — —
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor