TABLE 8
RECOMMENDED AIRFLOW
| Rated | Rated | Recommended |
Model | CFM * | ESP * | Airflow Range |
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|
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|
WA421 | 1400 | .30 | 1600 - 1150 |
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|
WA482 | 1550 | .20 | 1750 - 1285 |
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|
WA602 | 1700 | .30 | 1950 - 1375 |
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* Rated CFM and ESP on high speed tap.
TABLE 9
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
Model | WA421 | WA482 | WA602 | |||
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| High | Low | High | Low | High | Low |
KW | Speed | Speed | Speed | Speed | Speed | Speed |
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|
.50 | .50 | .50 | .50 | .50 | .50 | |
.50 | .50 | .50 | .50 | .50 | .50 | |
.50 | .50 | .50 | .50 | .50 | .50 | |
.50 | .45 | .50 | .45 | .50 | .40 | |
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|
.50 | .50 | .50 | .50 | .50 | .50 | |
.50 | .50 | .50 | .50 | .50 | .50 | |
.50 | .50 | .50 | .50 | .50 | .50 | |
.50 | .50 | .50 | .50 | .50 | .50 | |
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|
.50 | .50 | .50 | .50 | .50 | .50 | |
.50 | .50 | .50 | .50 | .50 | .50 | |
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|
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.
TABLE 10
PRESSURE TABLE
COOLING |
|
|
| Air Temperature Entering Outdoor Coil °F |
| |||||||
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| Return Air |
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| Model | Temperature | Pressure | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 |
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|
|
| 75 deg. DB | Low Side | 68 | 71 | 74 | 76 | 78 | 80 | 81 | 83 | 84 |
|
| 62 deg. WB | High Side | 213 | 228 | 243 | 259 | 274 | 290 | 305 | 321 | 337 |
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| WA421 | 80 deg. DB | Low Side | 72 | 76 | 79 | 82 | 84 | 86 | 88 | 89 | 90 |
| 67 deg. WB | High Side | 218 | 234 | 249 | 265 | 281 | 297 | 313 | 330 | 346 | |
|
| |||||||||||
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| 85 deg. DB | Low Side | 78 | 82 | 85 | 88 | 90 | 92 | 94 | 96 | 97 |
|
| 72 deg. WB | High Side | 226 | 242 | 258 | 274 | 290 | 307 | 323 | 341 | 358 |
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|
|
| 75 deg. DB | Low Side | 73 | 74 | 76 | 78 | 79 | 80 | 82 | 83 | 84 |
|
| 62 deg. WB | High Side | 204 | 217 | 232 | 248 | 265 | 284 | 304 | 325 | 348 |
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|
| WA482 | 80 deg. DB | Low Side | 78 | 79 | 81 | 82 | 84 | 86 | 87 | 89 | 90 |
| 67 deg. WB | High Side | 210 | 223 | 238 | 254 | 272 | 291 | 312 | 334 | 357 | |
|
| |||||||||||
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|
| 85 deg. DB | Low Side | 84 | 85 | 87 | 88 | 90 | 92 | 93 | 95 | 97 |
|
| 72 deg. WB | High Side | 217 | 231 | 247 | 264 | 282 | 302 | 323 | 345 | 369 |
|
|
|
|
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|
|
|
|
|
|
|
|
|
| 75 deg. DB | Low Side | 71 | 72 | 74 | 75 | 76 | 77 | 78 | 78 | 79 |
|
| 62 deg. WB | High Side | 233 | 247 | 262 | 278 | 295 | 313 | 331 | 351 | 371 |
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|
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|
| WA602 | 80 deg. DB | Low Side | 76 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 |
| 67 deg. WB | High Side | 237 | 253 | 269 | 285 | 303 | 321 | 340 | 390 | 381 | |
|
| |||||||||||
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|
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|
|
| 85 deg. DB | Low Side | 84 | 85 | 85 | 86 | 87 | 88 | 89 | 90 | 91 |
|
| 72 deg. WB | High Side | 245 | 261 | 278 | 296 | 314 | 333 | 353 | 373 | 394 |
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Low side pressure ± 2 PSIG
High side pressure ± 5 PSIG
Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instructions.
NOTE: Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated check condenser fan wiring. See “Condenser Fan Operation” on Page 14.
Manual
Page 18