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Performance Data
Table 12. Belt drive evaporator fan performance - 7.5 tons standard efficiency with gas heat - YSC090H3,4,W high gas heat
horizontal airflow
.10
.20
cfm
rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm
1-hp Standard Motor & Field Supplied Low Static Drive
2400
776
0.70
819
0.79
2700
863
0.97
901
1.07
3000
951
1.31
985
1.42 1019 1.52 1052 1.63 1084 1.73 1116 1.84 1146 1.95 1176 2.06 1205
3300
1039 1.72 1071 1.84 1102 1.95 1132 2.07 1162 2.18 1191 2.30 1220 2.42 1248 2.54 1275
3600
1128 2.21 1157 2.34 1186 2.46 1214 2.59 1242 2.71 1269 2.84 1296 2.97 1322 3.10 1348
3-hp Oversized Motor & Drive
Continued
1.10
1.20
cfm
rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm
3-hp Oversized Motor & Drive
2400
1132 1.58 1161 1.68 1189 1.77 1216 1.86 1242 1.95 1268 2.04 1293 2.13 1318 2.23 1342
2700
1194 1.95 1222 2.05 1249 2.16 1276 2.26 1301 2.37 1327 2.48 1350 2.57 1374 2.68 1398
3000
1260 2.39 1286 2.50 1312 2.61 1337 2.72 1363 2.84 1387 2.96 1410 3.07 1434 3.19 1457
3300
1328 2.90 1353 3.02 1378 3.14 1402 3.26 1426 3.39
3600
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Notes:
1. For standard evaporator fan speed (rpm), reference the standard motor and sheave/fan speed applicable table in the fan performance section.
2. Data includes pressure drop due to standard filters and wet coils. No accessories or options are included in pressure drop data.
3. 1-hp Fan Motor Heat (MBh) = 2.829 x Fan bhp+.4024. 3-hp Fan Motor Heat (MBh) = 2.900 x Fan bhp+.4750
4. 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.
(a) Field Supplied Fan Sheave AK74 and Belt AX35
(b) Field Supplied Fan Sheave BK52 and Belt BX30
12
External Static Pressure (Inches of Water)
.30
.40
.50
859
0.87
898
0.96
936
938
1.16
974
1.26 1009 1.36 1043 1.46 1075 1.55 1106 1.65 1136
External Static Pressure (Inches of Water)
1.30
1.40
1.50
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3-hp Oversized Motor & Field Supplied High Static Drive
.60
.70
(a)
1-hp Standard Motor & Drive
1.05
972
1.13 1007 1.22 1039 1.31 1071
3-hp Oversized Motor & Field Supplied High Static
1.60
1.70
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.80
.90
bhp
rpm
1.40
1102
1.75
1165
2.17
1232
2.66
1302
3.23
1373
1.80
1.90
bhp
rpm
2.33
1364
2.78
1421
3.31
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(b)
RT-SVF55F-EN
1.00
bhp
1.49
1.85
2.28
2.78
3.36
Drive(b)
2.00
bhp
2.42
2.88
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