MORTEX PRODUCTS INC. 501 TERMINAL RD FORT WORTH, TX 76106 Page 12
SECTION 6: BLOWER PERFORMANCE
Table 2: Blower Performance -10 X 9 Blower - 1/3 HP 5 Speed Constant Torque Motor (With Air Filters)
Minimum CFM for Electric Heat: 6kW = 390 CFM; 8kW = 520 CFM; 10kW = 650 CFM; 12kW = 780 CFM;
15kW = 975 CFM; 20kW = 1,300 CFM
Blower Motor Speed Tap Information
The constant torque motor has 5 speed taps. The speed taps are designed to be used as shown below:
Tap 5 is used for HIGH-SPEED Cooling operation.
Tap 4 is used for MED-HIGH SPEED Cooling or Heating operation.
Tap 3 is used for MEDIUM SPEED Cooling or Heating operation.
Tap 2 is used for MED-LOW SPEED Heating operation.
Tap 1 is used for LOW-SPEED Constant Circulation operation ONLY. This speed tap is energized by the “G” thermostat terminal and delivers
approximately 200 CFM which is insufficient to support cooling or heating operation and will result in the indoor coil freezing and
tripping of the heating limits.
EXTERNAL STATIC PRESSURE (ESP)
IN W.C. kPa IN W.C. kPa IN W.C. kPa IN W.C. kPa IN W.C. kPa IN W.C. kPa IN W.C. kPa IN W.C. kPa IN W.C. kPa IN W.C. kPa
SPD TAP 0.10 0.02 0.20 0.05 0.30 0.07 0.40 0.10 0.50 0.12 0.60 0.15 0.70 0.17 0.80 0.20 0.90 0.22 1.00 0.25
CFM-NO-COIL
OPEN TOP,
SOLID DOOR
LO 935 441 763 360 680 321 560 264 498 235 437 206 347 164
MED-LO 968 457 881 416 810 382 756 357 680 321 566 267 531 251 446 210 382 180
MEDIUM 1074 507 1022 482 953 450 904 427 842 397 789 372 663 313 623 294 565 267 475 224
MED-HI 1192 563 1131 534 1079 509 1042 492 971 458 914 431 862 407 748 353 697 329 519 245
HIGH 1429 674 1372 648 1327 626 1285 606 1227 579 1176 555 1128 532 1072 506 941 444 602 284
CFM-NO-COIL
SOLID TOP
LOUVERED
DOOR
LO 813 384 742 350 655 309 596 281 490 231 436 206 349 165
MED-LO 913 431 864 408 806 380 742 350 673 318 593 280 521 246 438 207 379 179
MEDIUM 1050 496 990 467 939 443 885 418 843 398 813 384 726 343 642 303 568 268 471 222
MED-HI 1150 543 1096 517 1082 511 1002 473 958 452 913 431 857 404 806 380 737 348 533 252
HIGH 1360 642 1314 620 1267 598 1227 579 1182 558 1134 535 1096 517 1002 473 885 418 564 266
CFM-WITH COIL
98-8Z7W-OP
WITH CABINET
97-FLSB-27 OR
97-FLSF-27
LO 745 352 689 325 595 281 513 242 453 214 393 185 323 152
MED-LO 859 405 800 378 745 352 641 303 581 274 527 249 458 216 401 189 384 181
MEDIUM 978 462 926 437 872 412 832 393 721 340 655 309 600 283 563 266 514 243 420 198
MED-HI 1066 503 1023 483 965 455 923 436 875 413 793 374 709 335 655 309 596 281 439 207
HIGH 1276 602 1237 584 1197 565 1150 543 1117 527 1061 501 977 461 798 377 668 315 500 236
CFM WITH COIL
98-8Z7W-OP
WITH CABINET
97-FSOB-27
LO 721 340 655 309 556 262 490 231 462 218 382 180 321 151
MED-LO 832 393 775 366 717 338 623 294 556 262 528 249 470 222 404 191 352 166
MEDIUM 939 443 898 424 845 399 793 374 701 331 633 299 623 294 559 264 502 237 413 195
MED-HI 1037 489 994 469 956 451 901 425 832 393 752 355 697 329 655 309 554 261 453 214
HIGH 1231 581 1178 556 1146 541 1101 520 1058 499 1003 473 832 393 741 350 615 290 466 220
CFM WITH COIL
98-8G7W-OP
WITH CABINET
97-FLSB-27 OR
97-FLSF-27
LO 764 361 689 325 586 277 507 239 460 217 399 188 332 157
MED-LO 855 404 807 381 733 346 632 298 571 269 521 246 478 226 416 196 367 173
MEDIUM 990 467 923 436 878 414 825 389 741 350 672 317 628 296 574 271 520 245 440 208
MED-HI 1085 512 1031 487 988 466 929 438 878 414 789 372 725 342 663 313 603 285 474 224
HIGH 1291 609 1247 589 1202 567 1160 547 1117 527 1073 506 1020 481 821 387 665 314 524 247
CFM WITH COIL
98-8G7W-OP
WITH CABINET
97-FSOB-27
LO 721 340 655 309 566 267 507 239 451 213 374 177 315 149
MED-LO 828 391 756 357 705 333 623 294 561 265 529 250 462 218 404 191 359 169
MEDIUM 948 447 898 424 845 399 778 367 705 333 641 303 595 281 553 261 502 237 406 192
MED-HI 1048 495 1003 473 965 455 907 428 851 402 771 364 701 331 637 301 562 265 431 203
HIGH 1252 591 1227 579 1166 550 1139 538 1090 514 1026 484 871 411 709 335 618 292 466 220
CFM WITH COIL
98-8G4W-OP
WITH CABINET
97-FLSB-27 OR
97-FLSF-21
LO 731 345 634 299 577 272 473 223 368 174 394 186 290 137
MED-LO 827 390 754 356 703 332 629 297 530 250 570 269 457 216 383 181 312 147
MEDIUM 937 442 870 411 812 383 769 363 698 329 620 293 590 278 540 255 474 224 403 190
MED-HI 1030 486 967 456 919 434 877 414 816 385 784 370 673 318 615 290 591 279 472 223
HIGH 1230 580 1194 564 1136 536 1086 513 1046 494 998
471 947 447 784 370 634 299 500 236
CFM WITH COIL
96-8G4W-OP
WITH CABINET
97-FSOB-21
LO 731 345 678 320 587 277 503 237 458 216 398 188 333 157
MED-LO 848 400 792 374 739 349 630 297 562 265 527 249 483 228 419 198 387 183
MEDIUM 956 451 913 431 868 410 820 387 719 339 657 310 597 282 572 270 524 247 447 211
MED-HI 1051 496 1012 478 962 454 923 436 875 413 766 362 711 336 661 312 603 285 458 216
HIGH 1251 590 1216 574 1169 552 1132 534 1093 516 1053 497 986 465 770 363 643 303 510 241
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