Bryant 551B Series Installation, Start-Up And Service Instructions Manual page 26

AIRFLOW
(Cfm)
0.1
Rpm Bhp
1200 514 0.15
1300 545 0.18
1400 577 0.21
1500 609 0.26
1600 642 0.30
1700 675 0.36
1800 709 0.41
1900 743 0.48
2000 778 0.55
AIRFLOW
(Cfm)
1.0
Rpm Bhp
1200 999 0.66
1300 1025 0.74
1400 1042 0.81
1500 1060 0.88
1600 1080 0.95
1700 1101 1.03
1800 1122 1.11
1900 1143 1.21
2000 1165 1.31
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
testing on these units ensures that the full range of the motor can be
Table 11 — 551B048 Air Delivery — Horizontal Discharge Units
External Static Pressure (in. wg)
0.2 0.3
Rpm Bhp Rpm Bhp
590 0.20 657 0.25
615 0.23 680 0.29
642 0.27 704 0.33
670 0.31 729 0.38
699 0.36 755 0.43
728 0.42 782 0.49
759 0.48 810 0.55
790 0.55 838 0.62
836 0.62 875 0.70
DIRECT-DRIVE MOTOR
External Static Pressure (in. wg)
1.1 1.2
Rpm Bhp Rpm Bhp
1018 0.67 1036 0.68
1058 0.79 1090 0.84
1080 0.88 1118 0.95
1098 0.96 1136 1.04
1117 1.04 1153 1.12
1137 1.12 1172 1.20
1157 1.20 1192 1.29
1179 1.30 1214 1.39
1200 1.40 1235 1.49
DIRECT-DRIVE MOTOR
0.4 0.6
Rpm Bhp Rpm
723 0.30 828
744 0.35 849
766 0.39 870
788 0.44 892
811 0.49 913
836 0.55 935
860 0.62 957
886 0.69 980
913 0.77 1004
1.4 1.6
Rpm Bhp Rpm
1073 0.71 1109
1121 0.87 1159
1175 1.06 1206
1205 1.19 1258
1224 1.29 1287
1241 1.38 1307
1258 1.48 1323
1279 1.58 1341
1300 1.69 1361
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.
—26—
0.7
Bhp Rpm Bhp Rpm
0.42 876 0.49 924
0.47 895 0.54 940
0.52 915 0.59 959
0.58 936 0.65 980
0.64 957 0.72 1001
0.71 979 0.79 1023
0.78 1001 0.86 1044
0.86 1023 0.95 1066
0.94 1046 1.03 1088
1.8
Bhp Rpm Bhp
0.75 1138 0.79
0.90 1193 0.95
1.09 1244 1.12
1.30 1289 1.34
1.45 1337 1.56
1.56 1366 1.73
1.67 1385 1.86
1.78 1402 1.98
1.90 1419 2.10
0.8
Bhp
0.55
0.60
0.66
0.72
0.79
0.86
0.94
1.03
1.12