Bryant 581A, 581B, 579F, 581C

PERFORMANCE DATA (cont)

FAN PERFORMANCE — VERTICAL DISCHARGE UNITS

LEGEND See page 74 for general fan performance notes.

LEGEND

*Motor drive range: 685 to 1045 rpm. All other rpms require a field-supplied drive.

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 1.20.

3. See page 74 for general fan performance notes.

LEGEND

*Motor drive range: 1075 to 1455 rpm. All other rpms require a field-supplied

drive.

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See page 74 for general fan performance notes.

580F036 (3 TONS) — STANDARD MOTOR (DIRECT DRIVE)

Airflow

(Cfm)

Low Speed High Speed

208 V 230, 460, 575 V 208 V 230, 460, 575 V

ESP Bhp Watts ESP Bhp Watts ESP Bhp Watts ESP Bhp Watts

900 0.49 0.21 253 0.50 0.23 277 0.51 0.26 307 0.55 0.31 363

1000 0.42 0.23 270 0.43 0.25 292 0.43 0.27 321 0.51 0.32 374

1100 0.37 0.24 287 0.38 0.26 307 0.39 0.28 335 0.46 0.33 385

1200 0.33 0.26 304 0.33 0.27 323 0.34 0.29 349 0.40 0.34 397

1300 0.27 0.27 321 0.28 0.29 338 0.28 0.31 364 0.34 0.34 408

1400 0.20 0.29 338 0.23 0.30 354 0.25 0.32 378 — — —

1500 0.16 0.30 355 0.18 0.31 369 0.20 0.33 392 — — —

Bhp — Brake Horsepower Input to Fan

ESP — External Static Pressure (in. wg)

580F036 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)*

Airflow

(Cfm)

External Static Pressure (in. wg)

0.2 0.4 0.6 0.8 1.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

900 643 0.15 152 768 0.22 222 870 0.30 296 958 0.37 373 1037 0.46 454

1000 683 0.19 191 804 0.27 268 904 0.35 348 991 0.43 430 1069 0.52 517

1100 725 0.24 237 842 0.32 321 939 0.41 407 1025 0.50 496 1102 0.59 588

1200 767 0.29 291 880 0.38 382 976 0.48 474 1060 0.57 570 1136 0.67 668

1300 811 0.35 352 920 0.45 451 1013 0.55 550 1095 0.66 652 1170 0.76 756

1400 855 0.43 423 960 0.53 529 1051 0.64 636 1132 0.75 744 1205 0.86 855

1500 900 0.51 504 1002 0.62 617 1090 0.74 731 1169 0.85 846 1242 0.97 963

580F036 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)

Airflow

(Cfm)

External Static Pressure (in. wg)

1.2 1.4 1.6 1.8 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

900 1110 0.54 538 1177 0.63 627 1239 0.72 718 1298 0.82 813 1355 0.92 911

1000 1141 0.61 607 1207 0.70 700 1269 0.80 796 1328 0.90 895 1384 1.00 998

1100 1173 0.69 683 1238 0.79 781 1300 0.89 883 1358 0.99 987 1414 1.10 1094

1200 1205 0.77 768 1270 0.88 872 1332 0.98 979 1389 1.09 1088 —— —

1300 1239 0.87 863 1303 0.98 972 1364 1.09 1084 —— — —— —

1400 1273 0.97 967 1337 1.09 1082 ——— —— — —— —

1500 1309 1.09 1082 —— — ——— —— — ———

Bhp — Brake Horsepower Input to Fan

Watts — Input Watts to Motor

580F036 (3 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*