Bryant Single Package Rooftop Electric Heating/Electric Cooling Unit 558D - Manual (Page 26)

Table 16 — 558D060 Air Delivery — Horizontal Discharge Units (Standard Motor)
AIRFLOW
(Cfm)
STANDARD DIRECT DRIVE MOTOR
Low Speed Medium Speed High Speed
208 v 230, 460, 575 v 208 v 230, 460, 575 v 208 v 230, 460, 575 v
ESP Watts ESP Watts ESP Watts ESP Watts ESP Watts ESP Watts
1500 1.01 750 1.25 791 1.26 782 1.46 845 1.46 875 1.52 949
1600 0.82 780 1.09 824 1.11 821 1.32 883 1.33 913 1.41 988
1700 0.64 810 0.97 857 0.99 861 1.22 921 1.24 950 1.33 1027
1800 0.44 839 0.81 891 0.84 900 1.09 959 1.11 988 1.22 1066
1900 0.32 869 0.66 924 0.69 940 0.96 997 0.99 1025 1.11 1105
2000 0.21 899 0.47 957 0.51 979 0.80 1035 0.83 1063 0.97 1144
2100 0.13 929 0.32 990 0.36 1018 0.64 1073 0.71 1101 0.86 1183
2200 0.05 959 0.19 1023 0.21 1058 0.50 1111 0.58 1138 0.75 1222
2300 — — 0.08 1057 0.08 1097 0.34 1149 0.39 1176 0.57 1261
2400 — — — — — — 0.24 1187 0.29 1213 0.49 1300
2500 — — — — — — 0.15 1225 0.15 1251 0.34 1340
LEGEND
ESP — External Static Pressure (in. wg)
NOTES:
1. Values include losses for filters, unit casing, and wet coils.
2. Extensive motor and electrical testing on these units ensures that the full 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 af-
fected. For additional information on motor performance, refer to Table 4.
3. Use of field-supplied motor may affect wire sizing. Contact your distributor to verify.
4. To convert watts to bhp:
watts input x motor efficiency
bhp =
746
Motor efficiency = .67
Table 17 — 558D060 Air Delivery — Horizontal Discharge Units (Alternate Motor)
AIRFLOW
(Cfm)
ALTERNATE BELT DRIVE MOTOR
External Static Pressure (in. wg)
0.1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts
1500 658 276 722 337 840 470 937 603 1027 756 1108 920 1186 1104 1263 1328 1343 1615 1431 1829
1600 693 327 754 388 867 531 963 664 1052 828 1130 991 1205 1175 1278 1380 1350 1645 1424 1921
1700 729 388 787 450 895 593 991 746 1075 899 1154 1083 1226 1257 1296 1451 1364 1676 1432 1931
1800 765 460 821 521 923 664 1019 828 1099 981 1178 1165 1249 1349 1316 1553 1382 1758 1447 1993
1900 802 531 854 593 953 746 1046 920 1126 1083 1201 1257 1274 1461 1338 1656 1402 1870 1464 2095
2000 840 613 900 674 984 838 1073 1012 1154 1185 1226 1359 1297 1564 1363 1768 1424 1983 1484 2207
2100 878 705 923 766 1015 930 1101 1104 1182 1298 1252 1482 1320 1676 1388 1891 1448 2115 1505 2340
2200 916 797 958 869 1046 1032 1129 1216 1209 1420 1280 1615 1345 1809 1410 2013 1473 2248 1529 2483
2300 954 910 993 981 1079 1155 1160 1339 1237 1543 1309 1747 1372 1952 1434 2156 1496 2391 1554 2637
2400 993 1022 1029 1093 1112 1277 1190 1461 1264 1666 1336 1891 1400 2105 1459 2310 1519 2534 1578 2820
2500 1031 1155 1066 1226 1145 1420 1220 1640 1292 1809 1363 2044 1428 2269 1486 2483 1543 2708 1600 2953
NOTES:
1. Boldface indicates a field-supplied drive is required. (See Note 7.)
2. indicates field-supplied motor and drive are required.
3. indicates maximum usable watts of a factory-supplied motor.
4. Maximum usable watts input is 2120. Extensive motor and electrical testing on these units ensures that the full 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. For additional information on motor performance, refer to Table 4.
5. Values include losses for filters, unit casing, and wet coils.
6. Use of a field-supplied motor may affect wire sizing. Contact your distributor to verify.
7. Alternate motor drive range: 900 to 1300. All other rpms require field-supplied drive.
8. To convert watts to bhp:
watts input x motor efficiency
bhp =
746
Motor efficiency = .74
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