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

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Table 7 — 551B048 Air Delivery — Vertical Discharge Units
AIRFLOW
(Cfm)
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
0.1 0.2 0.3 0.4 0.6 0.7 0.8
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1200 542 0.16 616 0.21 678 0.27 739 0.32 842 0.44 886 0.50 929 0.56
1300 576 0.20 644 0.25 704 0.31 764 0.37 867 0.50 910 0.56 952 0.62
1400 610 0.24 673 0.30 732 0.36 791 0.42 889 0.55 933 0.62 976 0.69
1500 646 0.28 704 0.35 761 0.42 818 0.48 912 0.61 957 0.69 1001 0.76
1600 681 0.33 735 0.40 790 0.47 845 0.54 920 0.68 931 0.76 1023 0.83
1700 718 0.39 768 0.46 836 0.54 873 0.61 965 0.76 1005 0.84 1045 0.91
1800 754 0.45 801 0.53 851 0.61 900 0.69 992 0.84 1032 0.92 1071 1.00
1900 791 0.52 836 0.60 832 0.69 828 0.77 1019 0.93 1058 1.02 1097 1.10
2000 828 0.60 870 0.68 864 0.77 858 0.86 1046 1.03 1085 1.12 1124 1.21
AIRFLOW
(Cfm)
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
1.0 1.1 1.2 1.4 1.6 1.8
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1200 1008 0.67 1052 0.73 1096 0.78 1134 0.89 1203 1.00 — —
1300 1029 0.75 1065 0.81 1101 0.86 1174 1.01 1229 1.15 1277 1.27
1400 1052 0.83 1087 0.90 1121 0.96 1183 1.09 1255 1.22 1305 1.38
1500 1076 0.91 1111 0.99 1145 1.06 1208 1.20 1274 1.33 1337 1.47
1600 1100 1.00 1134 1.08 1168 1.15 1232 1.31 1291 1.46 1350 1.60
1700 1124 1.09 1158 1.17 1192 1.25 1255 1.42 1314 1.58 1370 1.77
1800 1147 1.18 1182 1.27 1217 1.36 1279 1.54 1381 1.71 1393 1.89
1900 1169 1.27 1205 1.37 1240 1.47 1303 1.66 1408 1.85 1417 2.03
2000 1194 1.38 1228 1.48 1262 1.58 1327 1.78 1436 1.98 1440 2.18
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
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.
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