Bryant Single Package Rooftop Electric Heating/Electric Cooling Unit 558D - Manual (Page 25)

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