Bryant 558F User Manual
Page 45
AIR DELIVERY — 559F180-300 UNITS (cont)
559F240 (20 TON)
Airflow
(Cfm)
Standard Belt-Drive Motor
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
6000
702
1.60
1428
796
1.90
1723
884
2.30
2025
965
2.60
2339
1041
3.00
2669
6500
747
2.00
1757
835
2.30
2073
919
2.70
2394
997
3.10
2725
1070
3.40
3069
7000
792
2.40
2138
877
2.80
2476
957
3.20
2816
1031
3.50
3165
1102
3.90
3525
7500
838
2.90
2571
918
3.30
2929
996
3.70
3290
1067
4.10
3658
1135
4.50
4035
8000
885
3.40
3060
962
3.90
3440
1036
4.30
3822
1105
4.70
4209
1170
5.20
4604
8500
932
4.00
3610
1005
4.50
4011
1077
4.90
4414
1143
5.40
4821
1206
5.90
5234
9000
980
4.70
4223
1050
5.20
4647
1119
5.70
5071
1183
6.20
5498
1244
6.60
5930
9500
1028
5.50
4904
1096
6.00
5350
1162
6.50
5796
1224
7.00
6243
1283
7.50
6695
10000
1077
6.30
5655
1141
6.90
6123
1205
7.40
6591
1266
7.90
7059
1323
8.40
7531
559F240 (20 TON) (cont)
Airflow
(Cfm)
Standard Belt-Drive Motor
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
6000
1115
3.40
3018
1186
3.80
3385
1255
4.20
3771
1322
4.70
4175
1389
5.20
4579
6500
1140
3.80
3429
1208
4.30
3805
1274
4.70
4198
1338
5.20
4609
1402
5.70
5020
7000
1169
4.40
3898
1233
4.80
4285
1296
5.20
4687
1358
5.70
5106
1420
6.20
5525
7500
1199
4.90
4422
1262
5.40
4822
1322
5.90
5235
1381
6.30
5662
1440
6.70
6089
8000
1232
5.60
5008
1292
6.10
5422
1350
6.50
5847
1407
7.00
6286
1464
7.50
6725
8500
1266
6.30
5655
1324
6.80
6085
1380
7.30
6524
1435
7.80
6975
1490
8.30
7426
9000
1302
7.10
6369
1359
7.60
6816
1413
8.10
7270
1466
8.70
7735
1519
9.30
8200
9500
1340
8.00
7152
1394
8.50
7616
1447
9.10
8088
1508
9.40
8428
—
—
—
10000
1378
9.00
8007
1431
9.50
8489
—
—
—
—
—
—
—
—
—
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP
— Factory-Installed Option
Watts — Input Watts to Motor
NOTES:
1. Boldface indicates field-supplied drive is required. (See Note 3.)
2.
indicates additional capability of 460 v motor.
3. Factory-shipped motor drive range is 1238 to 1494 rpm. Other rpms
require a field-supplied drive.
4. Maximum continuous bhp is 8.7 (208/230, 575 v) or 9.5 (460 v)
and maximum continuous watts are 7915 (208/230, 575 v) or
8640 (460 v). Do not adjust motor rpm such that motor maximum bhp
and/or watts is exceeded at the maximum operating cfm.
5. Static pressure losses (i.e., economizer) must be added to external
static pressure before entering Air Delivery table.
6. Interpolation is permissible. Do not extrapolate.
7. Fan performance is based on wet coils, clean filters, and
casing losses. See page 47 for accessory/FIOP static pressure
information.
8. Extensive motor and drive testing on these units ensures that the
full horsepower range of the motor can be utilized with confidence.
Using your fan motors up to the watts or bhp rating shown will not
result in nuisance tripping or premature motor failure. Unit warranty
will not be affected.
9. Minimum allowable cfm is 300 cfm/ton.
10. Use of a field-supplied motor may affect wire sizing. Contact your
local representative for details. For additional information on motor
performance, refer to Evaporator-Fan Motor Performance table on
page 62.
45