Bryant 551B Series Installation, Start-Up And Service Instructions Manual page 22

AIRFLOW
(Cfm)
0.1
Rpm Bhp
1200 542 0.16
1300 576 0.20
1400 610 0.24
1500 646 0.28
1600 681 0.33
1700 718 0.39
1800 754 0.45
1900 791 0.52
2000 828 0.60
AIRFLOW
(Cfm)
1.0
Rpm Bhp
1200 1008 0.67
1300 1029 0.75
1400 1052 0.83
1500 1076 0.91
1600 1100 1.00
1700 1124 1.09
1800 1147 1.18
1900 1169 1.27
2000 1194 1.38
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates a field-supplied drive is required. (See
Note 7.)
2. indicates field-supplied motor and drive are required.
3. indicates maximum usable bhp.
4. Maximum continuous bhp is 1.20. Extensive motor and electrical test-
ing on these units ensures that the full range of the motor can be
Table 7 — 551B048 Air Delivery — Vertical Discharge Units
External Static Pressure (in. wg)
0.2 0.3
Rpm Bhp Rpm Bhp
616 0.21 678 0.27
644 0.25 704 0.31
673 0.30 732 0.36
704 0.35 761 0.42
735 0.40 790 0.47
768 0.46 836 0.54
801 0.53 851 0.61
836 0.60 832 0.69
870 0.68 864 0.77
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
1.1 1.2
Rpm Bhp Rpm Bhp
1052 0.73 1096 0.78
1065 0.81 1101 0.86
1087 0.90 1121 0.96
1111 0.99 1145 1.06
1134 1.08 1168 1.15
1158 1.17 1192 1.25
1182 1.27 1217 1.36
1205 1.37 1240 1.47
1228 1.48 1262 1.58
BELT-DRIVE MOTOR
0.4 0.6
Rpm Bhp Rpm
739 0.32 842
764 0.37 867
791 0.42 889
818 0.48 912
845 0.54 920
873 0.61 965
900 0.69 992
828 0.77 1019
858 0.86 1046
1.4 1.6
Rpm Bhp Rpm
1134 0.89 1203
1174 1.01 1229
1183 1.09 1255
1208 1.20 1274
1232 1.31 1291
1255 1.42 1314
1279 1.54 1381
1303 1.66 1408
1327 1.78 1436
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.
5. Values include losses for filters, unit casing, and wet coils.
6. Use of a field-supplied motor may affect wire sizing. Contact your
local representative to verify.
7. Motor drive range: 840 to 1185. All other rpms require field-supplied
drive.
8. Interpolation is permissible. Do not extrapolate.
9. Minimum allowable cfm is 300 cfm/ton.
—22—
0.7
Bhp Rpm Bhp Rpm
0.44 886 0.50 929
0.50 910 0.56 952
0.55 933 0.62 976
0.61 957 0.69 1001
0.68 931 0.76 1023
0.76 1005 0.84 1045
0.84 1032 0.92 1071
0.93 1058 1.02 1097
1.03 1085 1.12 1124
1.8
Bhp Rpm Bhp
1.00 — —
1.15 1277 1.27
1.22 1305 1.38
1.33 1337 1.47
1.46 1350 1.60
1.58 1370 1.77
1.71 1393 1.89
1.85 1417 2.03
1.98 1440 2.18
0.8
Bhp
0.56
0.62
0.69
0.76
0.83
0.91
1.00
1.10
1.21