Bryant Gas Heating/Electric Cooling Units 581B - Manual (Page 25)

Table 11 — 581B060 Air Delivery — Vertical Discharge Units
AIRFLOW
(Cfm)
BELT DRIVE MOTOR
External Static Pressure (in. wg)
0.1 0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1500 771 0.37 828 0.44 935 0.58 1027 0.73 1107 0.88 1185 1.04
1600 816 0.45 869 0.51 968 0.66 1056 0.81 1127 0.97 1215 1.14
1700 902 0.61 940 0.62 1007 0.75 1094 0.91 1175 1.09 1245 1.26
1800 942 0.70 978 0.66 1063 0.82 1147 0.97 1248 1.20 1322 1.33
1900 982 0.80 1023 0.78 1097 0.91 1175 1.11 1266 1.29 1356 1.47
2000 1022 0.91 1068 0.90 1132 1.01 1218 1.23 1303 1.41 1397 1.52
2100 1063 0.99 1115 1.00 1180 1.17 1261 1.35 1340 1.53 1428 1.66
2200 1104 1.13 1159 1.15 1214 1.28 1310 1.52 1375 1.63 1459 1.80
2300 1130 1.26 1202 1.29 1248 1.38 1358 1.69 1410 1.72 1488 1.93
2400 1174 1.37 1237 1.41 1292 1.55 1392 1.81 1460 1.90 1532 2.14
2500 1201 1.48 1272 1.53 1335 1.71 1427 1.94 1518 2.16 1575 2.35
AIRFLOW
(Cfm)
BELT DRIVE MOTOR
External Static Pressure (in. wg)
1.2 1.4 1.6
Rpm Bhp Rpm Bhp Rpm Bhp
1500 1257 1.20 1330 1.38 1411 1.59
1600 1286 1.31 1353 1.49 1421 1.68
1600 1315 1.44 1381 1.52 1443 1.69
1800 1395 1.46 1475 1.56 1542 1.71
1900 1430 1.58 1504 1.69 1556 1.82
2000 1459 1.67 1532 1.82 1588 1.97
2100 1489 1.80 1567 1.99 1626 2.16
2200 1528 1.95 1603 2.17 1666 2.37
2300 1561 2.13 1637 2.35 1710 2.54
2400 1584 2.28 1671 2.55 1756 2.70
2500 1633 2.53 1698 2.72 — —
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive is required. (See Note 4.)
2. indicates field-supplied motor and drive required.
3. indicates maximum usable bhp.
4. Motor drive range is 1020 to 1460 rpm. All other rpms require a field-
supplied drive.
5. Values include losses for filters, units casing, and wet coils.
6. Maximum continuous bhp is 1.8. Extensive motor and electrical test-
ing on these units ensures that the full range of the motor can be
utilized with confidence. Using your fan motors up to the ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected.
7. Use of a field-supplied motor may affect wire sizing. Contact your lo-
cal representative to verify.
8. Interpolation is permissible. Do not extrapolate.
9. Minimum allowable cfm is 300 cfm/ton.
Table 12 — 581B072 Air Delivery — Vertical Discharge Units
AIRFLOW
(Cfm)
BELT DRIVE MOTOR
External Static Pressure (in. wg)
0.1 0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1800 942 0.70 978 0.66 1063 0.82 1147 0.97 1248 1.20 1322 1.33
1900 982 0.80 1023 0.78 1097 0.91 1175 1.11 1266 1.29 1356 1.47
2000 1022 0.91 1068 0.90 1132 1.01 1218 1.23 1303 1.41 1397 1.52
2100 1063 0.99 1115 1.00 1180 1.17 1261 1.35 1340 1.53 1428 1.66
2200 1104 1.13 1159 1.15 1214 1.28 1310 1.52 1375 1.63 1459 1.80
2300 1130 1.26 1202 1.29 1248 1.38 1358 1.69 1410 1.72 1488 1.93
2400 1174 1.37 1237 1.41 1292 1.55 1392 1.81 1460 1.90 1532 2.14
2500 1201 1.48 1272 1.53 1335 1.71 1427 1.94 1518 2.16 1575 2.35
2600 1246 1.62 1320 1.68 1368 1.81 1458 2.06 1562 2.42 1620 2.59
2700 1285 1.75 1361 1.82 1400 1.91 1490 2.19 1602 2.64 1666 2.85
2800 1304 1.87 1402 1.95 1439 2.08 1543 2.43 1642 2.86 — —
2900 1345 2.07 1446 2.16 1477 2.16 1585 2.65 — — — —
3000 1378 2.26 1489 2.36 1529 2.52 1598 2.73 — — — —
AIRFLOW
(Cfm)
BELT DRIVE MOTOR
External Static Pressure (in. wg)
1.2 1.4 1.6
Rpm Bhp Rpm Bhp Rpm Bhp
1800 1395 1.46 1475 1.56 1542 1.71
1900 1430 1.58 1504 1.69 1556 1.82
2000 1459 1.67 1532 1.82 1588 1.97
2100 1489 1.80 1567 1.99 1626 2.16
2200 1528 1.95 1603 2.17 1666 2.37
2300 1561 2.13 1637 2.35 1710 2.54
2400 1584 2.28 1671 2.55 1756 2.70
2500 1633 2.53 1698 2.72 — —
2600 1675 2.77 — — — —
2700 — — — — — —
2800 — — — — — —
2900 — — — — — —
3000 — — — — — —
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive is required. (See Note 4.)
2. indicates field-supplied motor and drive required.
3. indicates maximum usable bhp.
4. Motor drive range is 1120 to 1585 rpm. All other rpms require a field-
supplied drive.
5. Values include losses for filters, units casing, and wet coils.
6. Maximum continuous bhp is 2.40. Extensive motor and electrical test-
ing on these units ensures that the full range of the motor can be
utilized with confidence. Using your fan motors up to the ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected.
7. Use of a field-supplied motor may affect wire sizing. Contact your lo-
cal representative to verify.
8. Interpolation is permissible. Do not extrapolate.
9. Minimum allowable cfm is 300 cfm/ton.
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