Bryant 558D Installation, Start-Up And Service Instructions Manual page 25

Table 14 — 558D048 Air Delivery — Horizontal Discharge Units (Standard Motor)
AIRFLOW
(Cfm)
1200
1300
1400
1500
1600
1700
1800
1900
2000
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 affected. For additional information on motor performance, refer to Table 4.
3. Use of a field-supplied motor may affect wire sizing. Contact your distributor to verify.
4. To convert watts to bhp:
bhp =
Motor efficiency = .66
Table 15 — 558D048 Air Delivery — Horizontal Discharge Units (Alternate Motor)
AIRFLOW
(Cfm)
0.1
Rpm Watts
1200 514 158
1300 545 189
1400 577 221
1500 609 273
1600 642 315
1700 675 378
1800 709 431
1900 743 504
2000 778 578
AIRFLOW
(Cfm)
1.1
Rpm Watts
1200 1018 685
1300 1058 807
1400 1080 899
1500 1098 981
1600 1117 1058
1700 1137 1139
1800 1157 1226
1900 1179 1328
2000 1200 1431
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
Low Speed
208 v
ESP Watts ESP
0.93 458 0.97
0.86 471 0.90
0.78 503 0.84
0.73 536 0.76
0.67 557 0.70
0.60 584 0.63
0.51 610 0.54
0.40 629 0.45
0.32 661 0.33
LEGEND
watts input x motor efficiency
746
0.2 0.3
Rpm Watts Rpm Watts
590 210 657 263
615 242 680 305
642 284 704 347
670 326 729 394
699 378 755 447
728 441 782 510
759 504 810 578
790 578 838 651
836 651 875 730
ALTERNATE BELT DRIVE MOTOR
External Static Pressure (in. wg)
1.2 1.4
Rpm Watts Rpm Watts
1036 695 1073 756
1090 858 1121 832
1118 971 1175 1014
1136 1063 1205 1138
1153 1140 1224 1234
1172 1226 1241 1320
1192 1318 1258 1415
1214 1420 1279 1511
1235 1523 1300 1616
STANDARD DIRECT DRIVE MOTOR
230, 460, 575 v 208 v
Watts ESP Watts
506 1.04
521 0.96
556 0.90
593 0.83
616 0.75
646 0.67
674 0.62
696 0.54
731 0.47
ALTERNATE BELT DRIVE MOTOR
External Static Pressure (in. wg)
0.4 0.6
Rpm Watts Rpm Watts
723 315 828 441
744 368 849 494
766 410 870 546
788 462 892 609
811 515 913 672
836 578 935 746
860 651 957 820
886 725 980 904
913 809 1004 988
1.6 1.8
Rpm Watts Rpm Watts
1109 794 1138
1159 918 1193
1206 1042 1244
1258 1243 1289
1287 1387 1337
1307 1492 1366
1323 1597 1385
1341 1702 1402
1361 1817 1419
—25—
High Speed
230, 460, 575 v
ESP Watts
572 1.09 632
589 1.02 651
616 0.96 681
631 0.89 698
654 0.82 723
678 0.74 750
698 0.69 772
720 0.62 796
744 0.54 823
0.7 0.8
Rpm Watts Rpm Watts
876 510 924
895 562 940
915 620 959
936 683 980
957 751 1001
979 825 1023
1001 904 1044
1023 993 1066 1082
1046 1082 1088 1177
851
976
1138
1282
1492
1655
1779
1894
2008
1.0
Rpm Watts
578 999 674
630 1025 756
693 1042 828
757 1060 899
830 1080 971
904 1101 1053
988 1122 1134
1143 1237
1165 1339