Bryant Gas Heating/Electric Cooling Units 581B - Manual (Page 24)

Table 9 — 581B036 Air Delivery — Vertical 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
900 581 0.12 673 0.18 736 0.22 805 0.25 865 0.29 911 0.34
1000 644 0.19 709 0.22 782 0.28 835 0.30 900 0.35 937 0.38
1100 687 0.22 746 0.26 806 0.30 867 0.35 929 0.40 964 0.40
1200 733 0.26 785 0.32 843 0.35 903 0.41 960 0.47 994 0.50
1300 754 0.29 826 0.38 891 0.43 942 0.48 991 0.53 1047 0.60
1400 810 0.35 868 0.45 937 0.51 984 0.57 1032 0.62 1067 0.67
1500 841 0.42 911 0.53 985 0.61 1029 0.66 1073 0.72 1109 0.77
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
900 957 0.39 988 0.43 1039 0.47 1061 0.51 1083 0.54 1105 0.58
1000 992 0.44 1039 0.49 1061 0.55 1088 0.60 1111 0.66 1136 0.72
1100 1013 0.49 1068 0.55 1091 0.61 1109 0.66 1127 0.73 1145 0.80
1200 1045 0.56 1090 0.64 1109 0.68 1156 0.73 1203 0.81 1250 0.86
1300 1075 0.64 1122 0.70 1152 0.76 1190 0.82 1228 0.87 1266 0.94
1400 1110 0.73 1160 0.78 1181 0.83 1237 0.88 1293 0.94 1349 0.99
1500 1150 0.78 1190 0.84 1225 0.89 1271 0.95 1317 1.00 1383 1.05
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates a field-supplied drive is required. (See Note 2.)
2. Motor drive range is 760 to 1090 rpm. All other rpms require a field-supplied
drive.
3. Values include losses for filters, unit casing, and wet coils.
4. Maximum continuous bhp is 1.2. Extensive motor and electrical testing 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 trip-
ping or premature motor failure. Unit warranty will not be affected.
5. Use of a field-supplied motor may affect wire sizing. Contact your local repre-
sentative to verify.
6. Interpolation is permissible. Do not extrapolate.
7. Minimum allowable cfm is 300 cfm/ton.
Table 10 — 581B048 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 596 0.20 665 0.25 722 0.31 779 0.36 872 0.48 915 0.54 957 0.60
1300 633 0.24 699 0.30 754 0.36 809 0.42 902 0.55 943 0.61 984 0.67
1400 672 0.30 735 0.36 788 0.42 840 0.48 933 0.62 972 0.69 1011 0.75
1500 711 0.35 770 0.42 822 0.49 873 0.55 963 0.69 1002 0.77 1041 0.84
1600 751 0.42 835 0.49 871 0.56 907 0.63 993 0.77 1033 0.85 1072 0.93
1700 791 0.49 873 0.57 907 0.65 941 0.72 1024 0.87 1064 0.96 1103 1.04
1800 831 0.58 881 0.66 929 0.74 976 0.81 1057 0.97 1095 1.06 1132 1.14
1900 872 0.67 919 0.75 965 0.84 1011 0.92 1091 1.08 1127 1.17 1162 1.25
2000 913 0.77 958 0.86 1002 0.95 1046 1.03 1125 1.21 1160 1.30 1195 1.38
AIRFLOW
(Cfm)
BELT DRIVE MOTOR
External Static Pressure (in. wg)
0.9 1.0 1.1 1.2 1.4 1.6 1.8
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1200 993 0.65 1028 0.69 1056 0.72 1083 0.74 1134 0.80 1185 0.88 1331 0.99
1300 1021 0.74 1058 0.80 1090 0.85 1121 0.89 1171 0.94 1219 1.00 1268 1.10
1400 1049 0.82 1086 0.89 1120 0.96 1153 1.00 1210 1.12 1257 1.17 1307 1.25
1500 1077 0.92 1113 0.99 1147 1.06 1180 1.13 1241 1.27 1295 1.37 1339 1.43
1600 1107 1.00 1141 1.09 1174 1.17 1207 1.25 1269 1.40 1326 1.54 1376 1.65
1700 1137 1.12 1171 1.20 1203 1.29 1235 1.37 1296 1.53 1354 1.70 1407 1.84
1800 1167 1.23 1202 1.32 1233 1.41 1263 1.49 1323 1.67 1381 1.85 1436 2.02
1900 1197 1.35 1232 1.45 1263 1.54 1294 1.63 1351 1.81 1408 2.00 1463 2.19
2000 1229 1.48 1262 1.58 1294 1.68 1325 1.78 1362 1.97 1436 2.16 1489 2.36
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive is required. (See Note 4.)
2. indicates field-supplied motor and drive required.
3. indicates maximum usable bhp.
4. Motor drive range is 840 to 1185 rpm. All other rpms require a field-supplied
drive.
5. Values include losses for filters, unit casing, and wet coils.
6. Maximum continuous bhp is 1.2. Extensive motor and electrical testing on these
units ensure 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 trip-
ping or premature motor failure. Unit warranty will not be affected.
7. Use of a field-supplied motor may affect wire sizing. Contact your local repre-
sentative to verify.
8. Interpolation is permissible. Do not extrapolate.
9. Minimum allowable cfm is 300 cfm/ton.
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