Specifications
34
PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND
NOTES:
1.
Boldface
indicates a field-supplied drive is required. (See Note 6.)
2. indicates field-supplied motor and drive are required.
3. Maximum continuous bhp is 1.20 for standard motors; 2.40 for high-static
motors. 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 tripping or prema-
ture motor failure. Unit warranty will not be affected. For additional informa-
tion on motor performance, refer to Evaporator-Fan Motor Data tables on
pages 42 and 43.
4. Values include losses for filters, unit casing, and wet coils. See page 43 for
accessory/FIOP static pressure information.
5. Use of a field-supplied motor may affect wire sizing. Contact Bryant repre-
sentative to verify.
6. Motor drive range: 840 to 1185 rpm for standard motors; 1075 to 1455 rpm
for high-static motors. All other rpms require field-supplied drive.
7. Interpolation is permissible. Do not extrapolate.
551B048 (4 TONS) — STANDARD MOTOR (BELT DRIVE)
Airflow
(Cfm)
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 514 0.15 590 0.20 657 0.25 723 0.30 828 0.42
876 0.49 924 0.55
1300 545 0.18 615 0.23 680 0.29 744 0.35
849 0.47 895 0.54 940 0.60
1400 577 0.21 642 0.27 704 0.33 766 0.39
870 0.52 915 0.59 959 0.66
1500 609 0.26 670 0.31 729 0.38 788 0.44
892 0.58 936 0.65 980 0.72
1600 642 0.30 699 0.36 755 0.43 811 0.49
913 0.64 957 0.72 1001 0.79
1700 675 0.36 728 0.42 782 0.49 836 0.55
935 0.71 979 0.79 1023 0.86
1800 709 0.41 759 0.48 810 0.55
860 0.62 957 0.78 1001 0.86 1044 0.94
1900 743 0.48 790 0.55 838 0.62
886 0.69 980 0.86 1023 0.95 1066 1.03
2000 778 0.55 836 0.62
875 0.70 913 0.77 1004 0.94 1046 1.03 1088 1.12
551B048 (4 TONS) — STANDARD MOTOR (BELT DRIVE) (cont)
Airflow
(Cfm)
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
999 0.66 1018 0.67 1036 0.68 1073 0.71 1109 0.75 1138 0.79
1300
1025 0.74 1058 0.79 1090 0.84 1121 0.87 1159 0.90
1193 0.95
1400
1042 0.81 1080 0.88 1118 0.95 1175 1.06
1206 1.09 1244 1.12
1500
1060 0.88 1098 0.96 1136 1.04
1205 1.19
1258 1.30 1289 1.34
1600
1080 0.95 1117 1.04 1153 1.12
1224 1.29 1287 1.45 1337 1.56
1700
1101 1.03 1137 1.12 1172 1.20
1241 1.38 1307 1.56 1366 1.73
1800
1122 1.11 1157 1.20
1192 1.29 1258 1.48 1323 1.67 1385 1.86
1900
1143 1.21 1179 1.30 1214 1.39 1279 1.58 1341 1.78 1402 1.98
2000
1165 1.31 1200 1.40 1235 1.49 1300 1.69 1361 1.90 1419 2.10
551B048 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1200 590 0.20 723 0.30 828 0.42 924 0.55 999 0.66
1300 615 0.23 744 0.35 849 0.47 940 0.60 1025 0.74
1400 642 0.27 766 0.39 870 0.52 959 0.66 1042 0.81
1500 670 0.31 788 0.44 892 0.58 980 0.72 1060 0.88
1600 699 0.36 811 0.49 913 0.64 1001 0.79
1080 0.95
1700 728 0.42 836 0.55 935 0.71 1023 0.86
1101 1.03
1800 759 0.48 860 0.62 957 0.78 1044 0.94
1122 1.11
1900 790 0.55 886 0.69 980 0.86 1066 1.03
1143 1.21
2000 836 0.62 913 0.77 1004 0.94
1088 1.12 1165 1.31
551B048 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE) (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1200 1036 0.68 1073 0.71
1109 0.75 1138 0.79 1162 0.84
1300
1090 0.84 1121 0.87 1159 0.90 1193 0.95 1218 1.01
1400
1118 0.95 1175 1.06 1206 1.09 1244 1.12 1270 1.19
1500
1136 1.04 1205 1.19 1258 1.30 1289 1.34 1316 1.43
1600
1153 1.12 1224 1.29 1287 1.45 1337 1.56 1365 1.66
1700
1172 1.20 1241 1.38 1307 1.56 1366 1.73 1395 1.84
1800
1192 1.29 1258 1.48 1323 1.67 1385 1.86 1414 1.98
1900
1214 1.39 1279 1.58 1341 1.78 1402 1.98 1432 2.11
2000
1235 1.49 1300 1.69 1361 1.90 1419 2.10 1449 2.24
Bhp —
Brake Horsepower Input to Fan
FIOP —
Factory-Installed Option