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TABLE 5
PRESSURE TABLE
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| FULL LOAD COOLING — Fluid Temperature Entering Water Coil °F |
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Model | Temperature Pressure | 30°F | 35°F | 40°F | 45°F | 50°F | 55°F | 60°F | 65°F | 70°F | 75°F | 80°F | 85°F | 90°F | 95°F | 100°F | 105°F | 110°F | ||
| 75° DB | Low Side | 106 | 108 | 111 | 114 | 117 | 120 | 122 | 125 | 128 | 130 | 132 | 134 | 136 | 138 | 140 | 142 | 144 | |
| 62° WB | High Side | 131 | 146 | 161 | 176 | 191 | 206 | 221 | 236 | 252 | 272 | 293 | 313 | 334 | 355 | 375 | 396 | 417 | |
QW2S | 80° DB | Low Side | 113 | 116 | 119 | 122 | 125 | 128 | 131 | 134 | 137 | 139 | 141 | 144 | 146 | 148 | 150 | 152 | 154 | |
67° WB | High Side | 134 | 150 | 165 | 181 | 196 | 212 | 227 | 243 | 258 | 279 | 300 | 322 | 343 | 364 | 385 | 406 | 427 | ||
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| 85° DB | Low Side | 121 | 125 | 128 | 131 | 134 | 138 | 141 | 144 | 147 | 150 | 152 | 154 | 157 | 159 | 161 | 164 | 166 | |
| 72° WB | High Side | 139 | 155 | 171 | 187 | 203 | 219 | 235 | 251 | 267 | 289 | 311 | 333 | 355 | 377 | 398 | 420 | 442 | |
| 75° DB | Low Side | 83 | 87 | 91 | 94 | 98 | 102 | 106 | 109 | 113 | 116 | 118 | 121 | 123 | 126 | 128 | 131 | 133 | |
| 62° WB | High Side | 132 | 148 | 165 | 181 | 198 | 215 | 231 | 248 | 264 | 285 | 306 | 327 | 347 | 368 | 389 | 410 | 431 | |
QW3S | 80° DB | Low Side | 89 | 93 | 97 | 101 | 105 | 109 | 113 | 117 | 121 | 124 | 126 | 129 | 132 | 134 | 137 | 140 | 142 | |
67° WB | High Side | 135 | 152 | 169 | 186 | 203 | 220 | 237 | 254 | 271 | 292 | 314 | 335 | 356 | 378 | 399 | 420 | 442 | ||
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| 85° DB | Low Side | 96 | 100 | 104 | 109 | 113 | 117 | 121 | 126 | 130 | 133 | 136 | 139 | 142 | 144 | 147 | 150 | 153 | |
| 72° WB | High Side | 140 | 157 | 175 | 193 | 210 | 228 | 245 | 263 | 280 | 303 | 325 | 347 | 369 | 391 | 413 | 435 | 457 | |
| 75° DB | Low Side | 91 | 94 | 97 | 101 | 104 | 107 | 110 | 114 | 117 | 119 | 121 | 122 | 124 | 126 | 128 | 130 | 132 | |
| 62° WB | High Side | 146 | 162 | 177 | 193 | 208 | 224 | 239 | 255 | 270 | 291 | 312 | 333 | 354 | 375 | 396 | 417 | 438 | |
QW4S | 80° DB | Low Side | 97 | 101 | 104 | 108 | 111 | 115 | 118 | 122 | 125 | 127 | 129 | 131 | 133 | 135 | 137 | 139 | 141 | |
67° WB | High Side | 150 | 166 | 182 | 198 | 214 | 229 | 245 | 261 | 277 | 299 | 320 | 342 | 363 | 385 | 406 | 428 | 449 | ||
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| 85° DB | Low Side | 104 | 108 | 112 | 116 | 119 | 123 | 127 | 131 | 134 | 137 | 139 | 141 | 143 | 145 | 147 | 149 | 152 | |
| 72° WB | High Side | 155 | 172 | 188 | 205 | 221 | 237 | 254 | 270 | 287 | 309 | 331 | 353 | 376 | 398 | 420 | 442 | 465 | |
| 75° DB | Low Side | 92 | 94 | 96 | 98 | 101 | 103 | 105 | 107 | 109 | 111 | 112 | 114 | 115 | 116 | 118 | 119 | 121 | |
| 62° WB | High Side | 147 | 163 | 178 | 194 | 210 | 225 | 241 | 256 | 272 | 293 | 313 | 334 | 355 | 375 | 396 | 416 | 437 | |
QW5S | 80° DB | Low Side | 98 | 100 | 103 | 105 | 108 | 110 | 112 | 115 | 117 | 119 | 120 | 122 | 123 | 125 | 126 | 128 | 129 | |
67° WB | High Side | 151 | 167 | 183 | 199 | 215 | 231 | 247 | 263 | 279 | 300 | 321 | 343 | 364 | 385 | 406 | 427 | 448 | ||
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| 85° DB | Low Side | 105 | 108 | 110 | 113 | 116 | 118 | 121 | 123 | 126 | 127 | 129 | 131 | 132 | 134 | 135 | 137 | 139 | |
| 72° WB | High Side | 156 | 173 | 189 | 206 | 223 | 239 | 256 | 272 | 289 | 311 | 333 | 354 | 376 | 398 | 420 | 442 | 464 |
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| FULL LOAD HEATING — Fluid Temperature Entering Water Coil °F |
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Temperature Pressure | 5°F | 10°F | 15°F | 20°F | 25°F | 30°F | 35°F | 40°F | 45°F | 50°F | 55°F | 60°F | 65°F | 70°F | 75°F | 80°F | 85°F | ||||
QW2S | 70° DB | Low Side | 46 | 53 | 60 | 67 | 74 | 81 | 88 | 95 | 102 | 109 | 118 | 128 | 137 | 146 | 155 | 165 | 174 | ||
High Side | 262 | 270 | 279 | 287 | 296 | 304 | 313 | 321 | 330 | 338 | 347 | 355 | 364 | 372 | 381 | 389 | 398 | ||||
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QW3S | 70° DB | Low Side | 40 | 47 | 55 | 62 | 70 | 77 | 85 | 92 | 100 | 107 | 114 | 122 | 129 | 136 | 143 | 151 | 158 | ||
High Side | 280 | 290 | 300 | 310 | 320 | 330 | 340 | 350 | 360 | 370 | 380 | 389 | 399 | 408 | 418 | 427 | 437 | ||||
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QW4S | 70° DB | Low Side | 36 | 43 | 51 | 58 | 66 | 73 | 81 | 88 | 96 | 103 | 112 | 122 | 131 | 140 | 149 | 159 | 168 | ||
High Side | 290 | 298 | 307 | 315 | 324 | 332 | 341 | 349 | 358 | 366 | 378 | 389 | 401 | 412 | 424 | 435 | 447 | ||||
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QW5S | 70° DB | Low Side | 37 | 44 | 51 | 58 | 65 | 72 | 79 | 86 | 93 | 100 | 109 | 119 | 128 | 137 | 146 | 156 | 165 | ||
High Side | 288 | 300 | 312 | 324 | 335 | 347 | 359 | 371 | 382 | 394 | 408 | 421 | 435 | 448 | 462 | 475 | 489 | ||||
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| Return Air |
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| PART LOAD COOLING — Fluid Temperature Entering Water Coil °F |
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Model |
| 30°F | 35°F | 40°F | 45°F | 50°F | 55°F | 60°F | 65°F | 70°F | 75°F | 80°F | 85°F | 90°F | 95°F | 100°F | 105°F | 110°F | ||
Temperature Pressure | ||||||||||||||||||||
| 75° DB | Low Side | 105 | 109 | 113 | 117 | 121 | 125 | 129 | 133 | 137 | 139 | 141 | 143 | 144 | 146 | 148 | 149 | 151 | |
| 62° WB | High Side | 120 | 135 | 150 | 165 | 179 | 194 | 209 | 224 | 239 | 259 | 279 | 299 | 319 | 339 | 359 | 379 | 399 | |
QW2S | 80° DB | Low Side | 112 | 116 | 121 | 125 | 130 | 134 | 138 | 143 | 147 | 149 | 151 | 153 | 154 | 156 | 158 | 160 | 162 | |
67° WB | High Side | 123 | 138 | 154 | 169 | 184 | 199 | 215 | 230 | 245 | 266 | 286 | 307 | 327 | 348 | 368 | 389 | 409 | ||
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| 85° DB | Low Side | 120 | 125 | 130 | 135 | 139 | 144 | 149 | 153 | 158 | 160 | 162 | 164 | 166 | 168 | 170 | 172 | 174 | |
| 72° WB | High Side | 127 | 143 | 159 | 175 | 190 | 206 | 222 | 238 | 254 | 275 | 296 | 317 | 338 | 360 | 381 | 402 | 423 | |
| 75° DB | Low Side | 98 | 102 | 106 | 110 | 114 | 117 | 121 | 125 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | 137 | |
| 62° WB | High Side | 124 | 139 | 154 | 169 | 184 | 199 | 215 | 230 | 245 | 265 | 286 | 306 | 327 | 347 | 368 | 388 | 409 | |
QW3S | 80° DB | Low Side | 105 | 109 | 113 | 117 | 122 | 126 | 130 | 134 | 138 | 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | |
67° WB | High Side | 127 | 143 | 158 | 174 | 189 | 205 | 220 | 236 | 251 | 272 | 293 | 314 | 335 | 356 | 377 | 398 | 419 | ||
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| 85° DB | Low Side | 113 | 117 | 122 | 126 | 131 | 135 | 139 | 144 | 148 | 149 | 151 | 152 | 153 | 154 | 155 | 156 | 157 | |
| 72° WB | High Side | 131 | 147 | 164 | 180 | 196 | 212 | 228 | 244 | 260 | 282 | 303 | 325 | 347 | 368 | 390 | 412 | 434 | |
| 75° DB | Low Side | 104 | 107 | 111 | 115 | 118 | 122 | 126 | 129 | 133 | 134 | 134 | 135 | 136 | 137 | 137 | 138 | 139 | |
| 62° WB | High Side | 129 | 144 | 159 | 174 | 190 | 205 | 220 | 235 | 251 | 271 | 292 | 312 | 332 | 353 | 373 | 394 | 414 | |
QW4S | 80° DB | Low Side | 111 | 115 | 119 | 123 | 127 | 130 | 134 | 138 | 142 | 143 | 144 | 145 | 145 | 146 | 147 | 148 | 149 | |
67° WB | High Side | 132 | 148 | 163 | 179 | 195 | 210 | 226 | 241 | 257 | 278 | 299 | 320 | 341 | 362 | 383 | 404 | 425 | ||
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| 85° DB | Low Side | 119 | 123 | 128 | 132 | 136 | 140 | 144 | 148 | 153 | 154 | 154 | 155 | 156 | 157 | 158 | 159 | 160 | |
| 72° WB | High Side | 137 | 153 | 169 | 185 | 201 | 217 | 234 | 250 | 266 | 288 | 309 | 331 | 353 | 375 | 396 | 418 | 440 | |
| 75° DB | Low Side | 108 | 110 | 112 | 114 | 115 | 117 | 119 | 121 | 122 | 124 | 125 | 127 | 128 | 129 | 131 | 132 | 134 | |
| 62° WB | High Side | 133 | 148 | 163 | 178 | 194 | 209 | 224 | 239 | 254 | 275 | 295 | 315 | 335 | 355 | 375 | 396 | 416 | |
QW5S | 80° DB | Low Side | 116 | 118 | 120 | 122 | 124 | 125 | 127 | 129 | 131 | 133 | 134 | 136 | 137 | 139 | 140 | 142 | 143 | |
67° WB | High Side | 136 | 152 | 167 | 183 | 199 | 214 | 230 | 245 | 261 | 282 | 302 | 323 | 344 | 364 | 385 | 406 | 426 | ||
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| 85° DB | Low Side | 125 | 127 | 129 | 131 | 133 | 135 | 137 | 139 | 141 | 142 | 144 | 146 | 147 | 149 | 151 | 152 | 154 | |
| 72° WB | High Side | 141 | 157 | 173 | 189 | 205 | 222 | 238 | 254 | 270 | 292 | 313 | 334 | 356 | 377 | 398 | 420 | 441 |
| Return Air |
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| PART LOAD HEATING — Fluid Temperature Entering Water Coil °F |
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Model |
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Temperature Pressure | 5°F | 10°F | 15°F | 20°F | 25°F | 30°F | 35°F | 40°F | 45°F | 50°F | 55°F | 60°F | 65°F | 70°F | 75°F | 80°F | 85°F | ||||
QW2S | 70° DB | Low Side | 15 | 26 | 37 | 49 | 60 | 71 | 82 | 94 | 105 | 116 | 125 | 135 | 144 | 153 | 162 | 172 | 181 | ||
High Side | 232 | 240 | 248 | 256 | 264 | 272 | 280 | 288 | 296 | 304 | 311 | 318 | 325 | 332 | 339 | 346 | 353 | ||||
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QW3S | 70° DB | Low Side | 38 | 47 | 56 | 65 | 73 | 82 | 91 | 100 | 108 | 117 | 127 | 137 | 147 | 157 | 167 | 177 | 187 | ||
High Side | 250 | 260 | 270 | 280 | 290 | 300 | 310 | 320 | 330 | 340 | 350 | 361 | 371 | 381 | 391 | 402 | 412 | ||||
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QW4S | 70° DB | Low Side | 39 | 47 | 55 | 64 | 72 | 80 | 88 | 97 | 105 | 113 | 122 | 131 | 140 | 149 | 158 | 167 | 176 | ||
High Side | 262 | 269 | 277 | 284 | 292 | 299 | 307 | 314 | 322 | 329 | 338 | 347 | 355 | 364 | 373 | 382 | 390 | ||||
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QW5S | 70° DB | Low Side | 43 | 50 | 58 | 65 | 73 | 80 | 88 | 95 | 103 | 110 | 120 | 129 | 139 | 148 | 158 | 167 | 177 | ||
High Side | 271 | 280 | 290 | 299 | 309 | 318 | 328 | 337 | 347 | 356 | 367 | 378 | 388 | 399 | 410 | 421 | 431 | ||||
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The data in the above pressure chart is based on the following flow rates:
FLOW RATE FOR VARIOUS FLUIDS | QW2S | QW3S | QW4S | QW6S |
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| Flow rate required GPM for fresh water | 5 | 6 | 7 | 9 |
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| Flow rate required GPM for 15% Methanol | 7 | 8 | 9 | 11 |
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| Flow rate required GPM, cooling tower/boiler loop | 6.1 | 8.6 | 11.3 | 13.7 |
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Manual | |
Page | 28 of 46 |