Assessments - 2, GPA: 5 ( )

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Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly. FIGURE 9 FAN BLADE SETTING TABLE 5 FAN BLADE DIMENSION Model Dimension A WA381 WA423 WA484 WA491 WA602 1.75 REMOVAL OF FAN SHROUD 1. Disconnect all power to the unit. 2. Remove the screws holding both grilles, one on each side of unit, and remove grilles. 3. Remove screws holding fan shroud to condenser and bottom. Nine (9) screws. 5. Slide complete motor, fan blade, and shroud assembly out the left side of the unit. 6. Service motor/fan as needed. 7. Reverse steps to reinstall. REFRIGERANT CHARGE The correct system R-22 charge is shown on the unit rating plate. Optimum unit performance will occur with a refrigerant charge resulting in a suction line temperature (6” from compressor) as shown in Table 6. TABLE 6 REFRIGERANT CHARGE Model Rated Airflow 95 OD Temperature 82 OD Temperature WA381 1100 48-50 46-48 WA423 1400 54-52 66-64 WA484 1550 56-54 67-65 WA491 1250 46-48 45-47 WA602 1700 55-53 62-60 The suction line temperatures in table above are based upon 80° F dry bulb / 67° F wet bulb (50% R.H.) temperature and rated airflow across the evaporator during cooling cycle. TABLE 7 INDOOR BLOWER PERFORMANCE CFM @ 230V E.S.P. In H20 WA423, WA484 WA602 Low 230V High 230V Low 230V High 230V Dry Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil .0 .1 .2 .3 .4 .5 1650 1550 1450 1350 1300 ---1600 1500 1400 1300 1175 ---1885 1770 1635 1500 1370 1250 1800 1665 1540 1400 1285 1150 1600 1525 ------------1450 1375 ------------2200 2100 2000 1875 1775 1650 2000 1900 1800 1700 1600 1475 Table 7A on Page 18 for models WA381 and WA491 Manual 2100-398 Page 16 TABLE 7A INDOOR BLOWER PERFORMANCE CFM @ 230V / 460V E.S.P. In H2O WA381 WA491 High Speed Medium Speed Low Speed High Speed Medium Speed Dry Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil .0 .1 .2 .3 1625 1475 1350 1150 1475 1350 1150 825 1425 1325 1200 ---1325 1200 125 875 1125 1100 1000 ---1100 1000 850 ---1700 1550 1400 1250 1550 1400 1250 1100 1475 1375 1250 1100 1375 1250 1100 --- TABLE 8 RECOMMENDED AIRFLOW Model Rated CFM * Rated ESP * Recommended Airflow Range Factory Speed Connection WA381 1100 .15 850-1250 Medium WA423 1400 .30 1150-1600 High WA484 1550 .20 1285-1750 High WA491 1250 .20 1100-1475 High WA602 1700 .30 1375-1950 High TABLE 9 TABLE 9A MAXIMUM ESP OF OPERATION MAXIMUM ESP OF OPERATION ELECTRIC HEAT ONLY ELECTRIC HEAT ONLY Model WA423 WA484 WA602 KW High Speed Low Speed High Speed Low Speed High Speed Low Speed -A05 .50 .50 .50 .50 .50 .50 -A10 .50 .50 .50 .50 .50 .50 -A15 .50 .50 .50 .50 .50 .50 -A20 .50 .45 .50 .45 .50 .40 -B00 .50 .50 .50 .50 .50 .50 -B09 .50 .50 .50 .50 .50 .50 -B15 .50 .50 .50 .50 .50 .50 -B18 .50 .50 .50 .50 .50 .50 -C09 .50 .50 .50 .50 .50 .50 -C15 .50 .50 .50 .50 .50 .50 Values shown are for units equipped with standard 1 inch throwaway filter or 1 inch washable filter. Derate ESP by .15 for 2 inch pleated filters. Model WA381 WA491 KW High Speed Med Speed Low Speed High Speed Med Speed -A05 .30 .30 .30 .30 .30 -A08 .30 .30 .30 .40 .40 -A10 .30 .30 .20 .30 .30 -B06 .40 .30 .30 .30 .30 -B09 .40 .30 .30 .30 .30 -C06 .30 .30 .30 .30 .30 -C09 .30 .30 .30 .30 .30 Values shown are for units equipped with standard 1 inch throwaway filter or 1 inch washable filter. Derate ESP by .15 for 2 inch pleated filters. Manual 2100-398 Page 17 TABLE 10 PRESSURE TABLE COOLING Air Temperature Entering Outdoor Coil °F Model Return Air Temperature Pressure 75 80 85 90 95 100 105 110 115 WA381 DB75 deg. WB62 deg. Low Side High Side 74 175 74 187 75 202 76 216 78 232 79 249 79 265 80 284 81 302 DB80 deg. WB67 deg. Low Side High Side 79 179 79 192 80 207 81 222 83 238 84 255 85 272 86 291 87 310 DB85 deg. WB72 deg. Low Side High Side 82 185 82 199 83 214 84 230 86 246 87 264 88 252 89 301 90 321 WA423 DB75 deg. WB62 deg. Low Side High Side 70 207 72 220 73 235 75 251 76 266 77 283 78 300 79 318 79 337 DB80 deg. WB67 deg. Low Side High Side 75 212 77 226 78 241 80 257 81 273 82 290 83 308 84 326 85 346 DB85 deg. WB72 deg. Low Side High Side 78 219 80 234 81 249 83 266 84 283 85 300 86 319 87 337 88 358 WA484 DB75 deg. WB62 deg. Low Side High Side 73 204 74 217 76 232 78 248 79 265 80 284 82 304 83 325 84 348 DB80 deg. WB67 deg. Low Side High Side 78 210 79 223 81 238 82 254 84 272 86 291 87 312 89 334 90 357 DB85 deg. WB72 deg. Low Side High Side 84 217 85 231 87 247 88 264 90 282 92 302 93 323 95 345 97 369 WA491 DB75 deg. WB62 deg. Low Side High Side 70 199 71 213 71 227 72 244 73 260 75 279 76 298 77 320 79 341 DB80 deg. WB67 deg. Low Side High Side 75 204 76 218 76 233 77 250 78 267 80 286 81 306 82 328 84 350 DB85 deg. WB72 deg. Low Side High Side 78 211 79 226 79 241 80 259 81 276 83 296 84 317 85 339 87 362 WA602 DB75 deg. WB62 deg. Low Side High Side 71 233 72 247 74 262 75 278 76 295 77 313 78 331 78 ...

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