Bryant Single Package Rooftop Electric Heating/Electric Cooling Unit 558D - Manual (Page 22)

Table 8 — 558D048 Air Delivery — Vertical Discharge Units (Alternate Motor)
AIRFLOW
(Cfm)
ALTERNATE BELT DRIVE MOTOR
External Static Pressure (in. wg)
0.1 0.2 0.3 0.4 0.6 0.7 0.8 1.0
Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts
1200 542 168 616 221 678 278 739 336 842 462 886 525 929 588 1008 704
1300 576 210 644 263 704 326 764 389 867 525 910 588 952 651 1029 788
1400 610 252 673 315 732 378 791 441 889 578 933 651 976 725 1052 826
1500 646 294 704 368 761 436 818 504 912 641 957 720 1001 777 1076 905
1600 681 347 735 420 790 494 845 567 920 695 931 772 1023 848 1100 995
1700 718 410 768 483 836 562 873 641 965 777 1005 853 1045 930 1124 1084
1800 754 473 801 557 851 641 900 725 992 858 1032 940 1071 1022 1147 1174
1900 791 546 836 630 832 720 828 809 1019 950 1058 1037 1097 1124 1169 1263
2000 828 630 870 714 864 809 858 904 1046 1053 1085 1139 1124 1237 1194 1373
AIRFLOW
(Cfm)
ALTERNATE BELT DRIVE MOTOR
External Static Pressure (in. wg)
1.1 1.2 1.4 1.6 1.8
Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts
1200 1052 762 1096 820 1134 835 1203 885 1242 969
1300 1065 846 1101 904 1174 1040 1229 1100 1277 1029
1400 1087 890 1121 918 1183 1042 1255 1167 1305 1190
1500 1111 980 1145 1014 1208 1138 1274 1272 1337 1350
1600 1134 1069 1168 1100 1232 1253 1291 1396 1350 1558
1700 1158 1164 1192 1196 1255 1358 1314 1511 1370 1738
1800 1182 1263 1217 1301 1279 1473 1381 1635 1393 1907
1900 1205 1363 1240 1406 1303 1588 1408 1769 1417 2068
2000 1228 1472 1262 1511 1327 1702 1436 1894 1440 2229
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 1000. 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: 840 to 1185 rpm. All other rpms require field-supplied drive.
8. To convert watts to bhp:
watts input x motor efficiency
bhp =
746
Motor efficiency = .75
Table 9 — 558D060 Air Delivery — Vertical 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 0.88 750 1.20 791 1.19 782 1.36 845 1.38 875 1.44 949
1600 0.68 780 1.04 824 1.04 821 1.22 883 1.25 913 1.33 988
1700 0.51 810 0.89 857 0.89 861 1.09 921 1.13 950 1.22 1027
1800 0.35 839 0.73 891 0.74 900 0.96 959 1.00 988 1.11 1066
1900 0.26 873 0.58 924 0.59 940 0.86 997 0.88 1025 1.00 1105
2000 0.18 905 0.42 957 0.44 979 0.73 1035 0.78 1063 0.92 1144
2100 0.08 940 0.27 990 0.29 1018 0.59 1073 0.63 1101 0.81 1183
2200 — — 0.19 1023 0.19 1035 0.46 1111 0.49 1138 0.69 1222
2300 — — 0.11 1056 0.11 1076 0.34 1149 0.41 1176 0.59 1261
2400 — — 0.03 1096 0.04 1113 0.19 1187 0.22 1213 0.43 1300
2500 — — — — — — 0.09 1225 0.12 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
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