36 performance data (cont) – Bryant COMMERCIAL SINGLE PACKAGE ROOFTOP GAS HEAT/ELECTRIC COOLING 581B User Manual
Page 36

36
PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND
NOTES:
1. Boldface indicates field-supplied drive required. (See Note 3.)
2.
indicates field-supplied motor and drive required.
3. Motor drive range is 1120 to 1585 rpm for standard motors; 1300 to 1685 rpm
for high-static motors. All other rpms require a field-supplied drive.
4. Values include losses for filters, unit casing, and wet coils. See page 40 for
accessory/FIOP static pressure information.
5. Maximum continuous bhp is 2.4 for standard motors; 2.9 for high-static
motors. 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 ratings shown will not result in nuisance tripping or premature motor
failure. Unit warranty will not be affected. See Evaporator-Fan Motor Data
tables on pages 41 and 42 for additional information.
6. Use of a field-supplied motor may affect wire sizing. Contact your Bryant rep-
resentative to verify.
7. Interpolation is permissible. Do not extrapolate.
581B072 (6 TONS) — STANDARD MOTOR
AIRFLOW
(Cfm)
EXTERNAL STATIC PRESSURE (in. wg)
0.1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
1800
885
0.63
942
0.73
1047
0.90
1139
1.05
1193
1.14
1276
1.30
1341
1.40
1413
1.55
1474
1.58
1900
928
0.73
982
0.83
1084
1.02
1160
1.11
1223
1.24
1301
1.38
1374
1.53
1437
1.62
1490
1.67
2000
971
0.84
1022
0.94
1121
1.12
1188
1.22
1254
1.36
1329
1.44
1396
1.66
1460
1.68
1509
1.77
2100
1015
0.97
1063
1.10
1140
1.18
1196
1.27
1272
1.45
1354
1.58
1413
1.75
1475
1.73
1529
1.92
2200
1060
1.10
1104
1.20
1159
1.23
1229
1.41
1306
1.53
1363
1.70
1434
1.81
1487
1.85
1554
2.07
2300
1104
1.25
1130
1.27
1196
1.37
1264
1.56
1340
1.66
1397
1.86
1459
1.88
1520
2.07
1576
2.24
2400
1138
1.30
1174
1.37
1245
1.57
1305
1.63
1373
1.84
1440
1.95
1502
2.06
1552
2.24
1604
2.42
2500
1183
1.43
1201
1.50
1284
1.65
1338
1.75
1402
1.99
1469
2.04
1524
2.24
1585
2.42
1638
2.60
2600
1210
1.58
1243
1.67
1312
1.76
1366
1.96
1435
2.10
1494
2.19
1552
2.40
1616
2.63
1671
2.80
2700
1254
1.76
1285
1.80
1354
1.95
1403
2.14
1474
2.21
1536
2.46
1584
2.61
1646
2.83
1706
2.97
2800
1274
1.82
1304
1.85
1374
2.12
1459
2.25
1514
2.42
1570
2.66
1624
2.85
1677
2.99
—
—
2900
1318
1.95
1345
2.05
1412
2.32
1496
2.45
1529
2.61
1603
2.87
1671
3.03
—
—
—
—
3000
1362
2.20
1378
2.30
1451
2.40
1534
2.66
1560
2.81
1611
3.01
—
—
—
—
—
—
581B072 (6 TONS) — HIGH-STATIC MOTOR
AIRFLOW
(Cfm)
EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
1800
942
0.73
1047
0.90
1139
1.05
1193
1.14
1276
1.30
1341
1.40
1413
1.55
1474
1.58
1522
1.74
1566
1.89
1900
982
0.83
1084
1.02
1160
1.11
1223
1.24
1301
1.38
1374
1.53
1437
1.62
1490
1.67
1538
1.84
1583
2.00
2000
1022
0.94
1121
1.12
1188
1.22
1264
1.36
1329
1.44
1396
1.66
1460
1.68
1509
1.77
1558
1.95
1603
2.12
2100
1063
1.10
1140
1.18
1196
1.27
1272
1.45
1354
1.58
1413
1.75
1475
1.73
1529
1.92
1578
2.11
1624
2.30
2200
1104
1.20
1159
1.23
1229
1.41
1306
1.53
1363
1.70
1434
1.81
1487
1.85
1554
2.07
1604
2.28
1651
2.48
2300
1130
1.27
1196
1.37
1264
1.56
1340
1.66
1397
1.86
1459
1.88
1520
2.07
1576
2.24
1627
2.46
1674
2.68
2400
1174
1.37
1245
1.57
1305
1.63
1373
1.84
1440
1.95
1502
2.06
1552
2.24
1604
2.42
1656
2.66
1704
2.90
2500
1201
1.50
1284
1.65
1338
1.75
1402
1.99
1469
2.04
1524
2.24
1585
2.42
1638
2.60
1691
2.86
1740
3.12
2600
1246
1.67
1312
1.76
1366
1.96
1435
2.10
1494
2.19
1552
2.40
1616
2.63
1671
2.80
1726
3.09
1775
3.35
2700
1285
1.80
1354
1.95
1403
2.14
1474
2.21
1536
2.46
1584
2.61
1646
2.83
1706
2.97
1761
3.27
—
—
2800
1304
1.85
1374
2.12
1459
2.25
1514
2.42
1570
2.66
1624
2.85
1677
2.99
1739
3.33
1795
3.67
—
—
2900
1345
2.05
1412
2.32
1496
2.54
1529
2.61
1603
2.87
1671
3.03
1742
3.43
—
—
—
—
—
—
3000
1378
2.30
1451
2.40
1534
2.66
1560
2.81
1611
3.01
1692
3.49
1764
3.95
—
—
—
—
—
—
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option