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41
RT-PRC006-EN
(4 Ton)
Standard Efficiency Performance
Data
For Standard Evaporator Fan Speed (RPM), reference Table PD-86.
Notes:
Data includes pressure drop due to standardfilters 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
Fan Motor Heat (MBH) = 2.829 x Fan BHP+.4024.
1. Field Supplied Fan Sheave AK61 required. Field Supplied Belt may be
necessary.
2. Field Supplied Fan Sheave AK41 required. Field Supplied Belt may be
necessary.
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-24 — Belt Drive Evaporator Fan Performance — 4 Ton — YSC048A3,A4,AW*L,M — Low and Medium 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
1-HP Standard Motor & Field Supplied 1-HP Standard Motor & Drive
Low Static Drive (1 )
1280 604 0.21 666 0.25 724 0.30 778 0.36 826 0.41 870 0.47 911 0.52 952 0.58 990 0.63 1026 0.69
1440 665 0.29 720 0.34 773 0.38 824 0.44 872 0.51 916 0.57 956 0.63 994 0.69 1030 0.75 1065 0.81
1600 726 0.38 777 0.44 826 0.49 873 0.54 919 0.61 961 0.68 1002 0.75 1039 0.82 1074 0.89 1109 0.95
1760 789 0.50 836 0.56 881 0.61 924 0.67 967 0.73 1008 0.81 1048 0.89 1085 0.97 1120 1.04 1154 1.12
1920 851 0.63 896 0.70 938 0.76 978 0.82 1018 0.88 1057 0.96 1095 1.04 1131 1.13 1167 1.21 1199 1.30
Table PD-24 — Continued
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50
CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1-HP Standard Motor & Drive
1280 1062 0.76 1097 0.82 1130 0.88 1163 0.95 1195 1.02
1440 1100 0.88 1133 0.94 1166 1.01 1198 1.08 1228 1.15
1600 1141 1.02 1173 1.09 1205 1.16 1235 1.23 1265 1.31
1760 1185 1.19 1215 1.26 1246 1.33 1275 1.41 1304 1.49
1920 1230 1.37 1260 1.45 — — — — — —
1-HP Standard Motor & Field
Supplied High Static Drive (2)
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
Fan Motor Heat (MBH) = 2.829 x Fan BHP+.4024.
1. Field Supplied Fan Sheave AK61 required. Field Supplied Belt may be
necessary.
2. Field Supplied Fan Sheave AK41 required. Field Supplied Belt may be
necessary.
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-25 — Belt Drive Evaporator Fan Performance — 4 Ton — YSC048A3,A4,AW*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
1-HP Standard Motor & Field Supplied 1-HP Standard Motor & Drive
Low Static Drive (1 )
1280 618 0.22 678 0.26 735 0.31 788 0.37 835 0.42 879 0.48 920 0.53 960 0.59 997 0.65 1034 0.71
1440 680 0.30 735 0.35 787 0.40 838 0.46 884 0.52 926 0.59 966 0.64 1004 0.70 1040 0.77 1075 0.83
1600 744 0.40 794 0.45 842 0.50 888 0.56 933 0.64 975 0.71 1015 0.78 1051 0.84 1086 0.91 1120 0.97
1760 808 0.52 854 0.58 899 0.64 941 0.69 984 0.76 1024 0.84 1063 0.92 1099 1.00 1134 1.07 1167 1.14
1920 873 0.66 916 0.73 957 0.79 997 0.85 1037 0.92 1075 0.99 1112 1.08 1148 1.17 1183 1.25 1214 1.33
Table PD-25 — Continued
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50
CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1-HP Standard Motor & Drive
1280 1069 0.77 1104 0.83 1137 0.90 1169 0.96 1202 1.04
1440 1109 0.89 1142 0.96 1174 1.03 1205 1.10 1236 1.17
1600 1153 1.04 1184 1.11 1214 1.18 1244 1.26 1275 1.33
1760 1197 1.22 1228 1.29 1258 1.36 1287 1.44 — —
1920 1245 1.41 1274 1.49 — — — — — —
1-HP Standard Motor &
Field Supplied High Static Drive (2)