Bryant 558D Installation, Start-Up And Service Instructions Manual page 21

Table 6 — 558D036 Air Delivery — Vertical Discharge Units (Alternate Motor)
AIRFLOW
(Cfm)
0.1
Rpm Watts
900 581 119
1000 644 189
1100 687 219
1200 733 259
1300 754 288
1400 810 348
1500 841 418
AIRFLOW
(Cfm)
0.9
Rpm Watts
900 1039 448
1000 1061 507
1100 1090 577
1200 1109 647
1300 1152 716
1400 1181 806
1500 1225 895
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: 760 to 1090 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 7 — 558D048 Air Delivery — Vertical 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
0.2 0.3
Rpm Watts Rpm Watts
673 179 736 219
709 219 782 279
746 259 806 298
785 318 843 348
826 378 891 428
868 448 937 507
911 527 985 607
ALTERNATE BELT DRIVE MOTOR
External Static Pressure (in. wg)
1.0
Rpm Watts Rpm
1061 487 1083
1086 547 1111
1109 607 1127
1156 676 1203
1190 756 1228
1237 845 1293
1271 945 1317
Low Speed
208 v 230, 460, 575 v
ESP Watts ESP
0.93 458 0.94
0.86 471 0.87
0.78 503 0.79
0.70 536 0.73
0.61 557 0.64
0.51 584 0.54
0.40 610 0.44
0.29 629 0.37
0.25 651 0.30
LEGEND
watts input x motor efficiency
746
ALTERNATE BELT DRIVE MOTOR
External Static Pressure (in. wg)
0.4 0.5
Rpm Watts Rpm Watts
805 249 865 288
835 298 900 348
867 348 929 398
903 408 960 467
942 477 991 527
984 567 1032 617
1029 656 1073 716
1.1 1.2
Watts Rpm Watts
527 1105 567
587 1136 627
637 1145 666
706 1250 736
796 1266 836
885 1349 925
995 1363 1044
STANDARD DIRECT DRIVE MOTOR
208 v
Watts ESP Watts
506 0.94 572
521 0.87 589
556 0.79 616
593 0.73 631
616 0.66 654
646 0.58 678
674 0.51 698
696 0.46 720
720 0.39 744
—21—
0.6 0.7
Rpm Watts Rpm Watts
911 338 957 388
937 378 992 438
964 398 1013 487
994 497 1045 557
1047 597 1075 637
1067 666 1110 726
1109 766 1150 816
High Speed
230, 460, 575 v
ESP Watts
0.99 632
0.92 651
0.87 681
0.80 698
0.76 723
0.68 750
0.63 772
0.56 796
0.50 823
0.8
Rpm Watts
988 428
1039 487
1068 547
1090 637
1122 696
1160 766
1190 855