RT-PRC006-EN
50
(7½ Ton)
Standard Efficiency
Performance
Data
Table PD-42 — Continued
External Static Pressure (Inches of Water)
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
CFM
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
2-HP Standard Motor & Drive
2-HP Standard Motor & High Static Drive Kit (or 3-HP Oversized Motor & Drive)
2400
1042
1.46
1073
1.56
1104
1.67
1134
1.77
1163
1.87
1190
1.97
1218
2.08
1244
2.18
1271
2.28
1296
2.38
2700
1086
1.75
1117
1.86
1146
1.97
1174
2.09
1203
2.21
1230
2.32
1255
2.44
1282
2.55
1308
2.67
1333
2.78
3000
1134
2.09
1163
2.21
1191
2.33
1218
2.45
1245
2.58
1272
2.70
1298
2.83
1323
2.96
1348
3.09
1372
3.22
3300
1185
2.49
1212
2.61
1238
2.74
1265
2.87
1292
3.01
1316
3.13
1341
3.27
1366
3.41
—
—
—
—
3600
1239
2.96
1265
3.09
1290
3.22
1316
3.36
—
—
—
—
—
—
—
—
—
—
—
—
3-HP Oversized Motor & Drive
For Standard Evaporator Fan Speed (RPM), reference Table PD-86.
Notes
Data includes pressure drop due to standard filters and wet coils.
No accessories or options are included in pressure drop data.
Refer to Table PD-89 to determine additional static pressure drop due to other options/accessories
2-HP Fan Motor Heat (MBH) = 2.000 x Fan BHP+.5000.
3-HP Fan Motor Heat (MBH) = 2.900 x Fan BHP+.4750.
1. Field Supplied Motor Sheave 1VL40L x 7/8 and Fan Sheave AK71 required.
Factory supplied motors, in commercial equipment, are definite purpose motors, specifically
designed and tested to operate reliably and continuously at all cataloged conditions. Using the
full horsepower range of our fan motors as shown in our tabular data will not result in
nuisance tripping or premature motor failure. Our product’s warranty will not be affected.
Table PD-42 — Belt Drive Evaporator Fan Performance — 7½ Ton — YSC090,092A3,A4,AW, AK *H — High Heat —Downflow Airflow
External Static Pressure (Inches of Water)
.10
.20
.30
.40
.50
.60
.70
.80
.90
1.00
CFM
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
2-HP Standard Motor & Field Supplied
2-HP Standard Motor & Drive
Low Static Drive (1
)
2400
—
—
697
0.62
745
0.71
790
0.80
830
0.89
869
0.98
906
1.07
941
1.16
976
1.26
1009
1.36
2700
717
0.74
760
0.83
804
0.93
847
1.03
887
1.13
922
1.23
958
1.33
991
1.43
1024
1.53
1055
1.64
3000
787
0.99
826
1.09
865
1.20
905
1.31
943
1.42
979
1.54
1012
1.64
1044
1.76
1075
1.87
1105
1.98
3300
858
1.30
894
1.41
929
1.52
965
1.64
1001
1.77
1036
1.89
1068
2.01
1099
2.13
1129
2.25
1157
2.37
3600
930
1.66
963
1.78
995
1.90
1028
2.03
1061
2.16
1093
2.30
1126
2.43
1157
2.57
1185
2.70
1212
2.83
3-HP Oversized Motor & Drive
2-HP Standard Motor & High Static Drive (or 3-HP Oversized Motor)
Table PD-43 — Belt Drive Evaporator Fan Performance — 7½ Ton — YSC090,092A3,A4,AW, AK *L— Low Heat —Horizontal Airflow
External Static Pressure (Inches of Water)
.10
.20
.30
.40
.50
.60
.70
.80
.90
1.00
CFM
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
2-HP Standard Motor & Field Supplied
2-HP Standard Motor & Drive
Low Static Drive (1
)
2400
653
0.53
694
0.59
745
0.67
793
0.77
835
0.86
874
0.94
911
1.03
948
1.13
982
1.23
1017
1.34
2700
725
0.73
760
0.80
801
0.88
847
0.98
889
1.09
927
1.19
963
1.28
997
1.38
1030
1.48
1061
1.60
3000
798
0.98
830
1.06
862
1.15
902
1.24
943
1.35
981
1.48
1017
1.60
1050
1.70
1081
1.80
1111
1.90
3300
872
1.28
901
1.38
929
1.47
961
1.56
998
1.67
1036
1.80
1071
1.93
1104
2.07
1135
2.19
1164
2.30
3600
946
1.65
973
1.75
1000
1.85
1025
1.95
1057
2.06
1091
2.17
1125
2.31
1158
2.46
1189
2.61
1219
2.75
3-HP Oversized Motor & Drive
2-HP Standard Motor & High Static Drive (or 3-HP Oversized Motor)
For Standard Evaporator Fan Speed (RPM), reference Table PD-86.
Notes:
Data includes pressure drop due to standard filters and wet coils.
No accessories or options are included in pressure drop data.
Refer to Table PD-89 to determine additional static pressure drop
due to other options/accessories
2-HP Fan Motor Heat (MBH) = 2.000 x Fan BHP+.5000.
3-HP Fan Motor Heat (MBH) = 2.900 x Fan BHP+.4750.
1. Field Supplied Motor Sheave 1VL40L x 7/8 and Fan Sheave AK71 required.
Factory supplied motors, in commercial equipment, are definite purpose motors,
specifically designed and tested to operate reliably and continuously at all cataloged
conditions. Using the full horsepower range of our fan motors as shown in our tabular
data will not result in nuisance tripping or premature motor failure. Our product’s
warranty will not be affected.
Table PD-43 — Continued
External Static Pressure (Inches of Water)
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
CFM
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
2-HP Standard Motor & Drive
2-HP Standard Motor & High Static Drive Kit (or 3-HP Oversized Motor & Drive)
2400
1053
1.44
1087
1.55
1121
1.65
1153
1.76
1185
1.86
1217
1.98
1246
2.08
1277
2.20
1306
2.32
1334
2.44
2700
1093
1.71
1124
1.83
1156
1.95
1187
2.06
1218
2.18
1248
2.30
1277
2.42
1306
2.53
1333
2.65
1361
2.78
3000
1141
2.02
1170
2.15
1198
2.28
1227
2.41
1255
2.54
1283
2.67
1311
2.79
1339
2.93
1365
3.05
1391
3.18
3300
1192
2.41
1220
2.52
1247
2.65
1272
2.78
1299
2.92
1325
3.07
1350
3.21
1376
3.36
—
—
—
—
3600
1246
2.87
1272
2.99
1298
3.11
1323
3.24
1348
3.37
—
—
—
—
—
—
—
—
—
—
3-HP Oversized Motor & Drive