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

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Table 10 — 551B036 Air Delivery — Horizontal Discharge Units
AIRFLOW
(Cfm)
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
0.1 0.2 0.3 0.4 0.5 0.6
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
900 526 0.06 584 0.08 656 0.12 734 0.22 818 0.25 875 0.27
1000 570 0.09 627 0.13 738 0.19 800 0.26 848 0.29 895 0.31
1100 614 0.13 670 0.16 758 0.23 812 0.29 863 0.32 914 0.35
1200 658 0.16 710 0.23 780 0.28 840 0.32 889 0.36 938 0.40
1300 703 0.20 752 0.27 808 0.32 868 0.37 916 0.41 963 0.45
1400 725 0.29 776 0.31 845 0.38 891 0.42 937 0.47 983 0.51
1500 755 0.33 816 0.38 870 0.43 924 0.48 969 0.53 1014 0.58
AIRFLOW
(Cfm)
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
0.7 0.8 0.9 1.0 1.1 1.2
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
900 924 0.32 953 0.35 989 0.38 1028 0.42 1074 0.49 1120 0.54
1000 936 0.35 977 0.39 1020 0.44 1064 0.48 1124 0.54 1185 0.60
1100 960 0.39 1005 0.43 1052 0.49 1100 0.52 1163 0.59 1225 0.65
1200 960 0.45 1038 0.50 1076 0.53 1136 0.59 1201 0.65 1266 0.72
1300 1012 0.51 1061 0.56 1090 0.61 1172 0.65 1239 0.72 1306 0.79
1400 1027 0.56 1071 0.60 1108 0.67 1208 0.70 1278 0.79 1347 0.87
1500 1056 0.63 1097 0.68 1117 0.70 1245 0.74 1315 0.87 1385 0.96
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface
indicates a field-supplied drive is required. (See
Note 4.)
2. 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.
3. Values include losses for filters, unit casing, and wet coils.
4. Motor drive range: 760 to 1090. All other rpms require field-supplied
drive.
5. Interpolation is permissible. Do not extrapolate.
6. Use of a field-supplied motor may affect wire sizing. Contact your
local representative to verify.
7. Minimum allowable cfm is 300 cfm/ton.
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