Bryant Single Package Rooftop Electric Heating/Electric Cooling Unit 558D - Manual (Page 24)

Table 12 — 558D036 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
900 0.72 253 0.75 277 0.73 307 0.76 363
1000 0.67 270 0.69 292 0.70 321 0.71 374
1100 0.61 287 0.63 307 0.64 335 0.65 385
1200 0.57 304 0.58 323 0.56 349 0.59 397
1300 0.51 321 0.53 338 0.53 364 0.54 408
1400 0.44 338 0.46 354 0.47 378 0.48 420
1500 0.39 355 0.41 369 0.43 392 0.43 431
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 = .63
Table 13 — 558D036 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 0.5 0.6 0.7 0.8
Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts
900 526 70 584 99 656 139 734 219 818 269 875 269 924 308 953 348
1000 570 109 627 149 736 189 800 259 848 288 895 308 936 348 977 388
1100 614 149 670 189 758 229 812 288 863 308 914 348 960 388 1005 428
1200 658 189 710 229 780 279 840 318 889 358 938 398 988 448 1038 497
1300 703 239 752 269 808 318 868 368 916 408 963 448 1012 507 1061 557
1400 725 288 776 308 845 378 891 418 937 467 983 507 1027 557 1071 597
1500 755 328 816 378 870 428 924 477 969 527 1014 577 1056 627 1097 676
AIRFLOW
(Cfm)
ALTERNATE BELT DRIVE MOTOR
External Static Pressure (in. wg)
0.9 1.0 1.1 1.2
Rpm Watts Rpm Watts Rpm Watts Rpm Watts
900 989 388 1028 438 1074 487 1120 537
1000 1020 438 1064 477 1124 537 1185 597
1100 1052 487 1100 527 1163 587 1225 647
1200 1076 527 1136 577 1201 647 1266 716
1300 1090 607 1172 647 1239 716 1306 786
1400 1108 666 1208 706 1278 786 1347 865
1500 1117 696 1245 776 1315 865 1385 955
NOTES:
1. Boldface indicates a field-supplied drive is required. (See Note 4.)
2. 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.
3. Values include losses for filters, unit casing, and wet coils.
4. Alternate motor drive range: 760 to 1090 rpm. All other rpms require field-supplied drive.
5. To convert watts to bhp:
watts input x motor efficiency
bhp =
746
Motor efficiency = .75
—24—