Zehnder Rittling VS Series Installation, Operation And Maintenance Manual page 25

Table 8: Blower performance data, standard motors
Rated Min.
Unit Speed
airflow CFM
High
VHN09 360 260
Low
High
VHN12 420 300
Low
High
VHN15 540 390
Low
High
VHN18 630 455
Low
High
VHN24 820 600
Low
High
VHN30 1080 780
Low
High
VHN36 1220 850
Low
Table 9: Blower performance data, high static motors
Rated Min.
Unit Speed
airflow CFM
High
VHN09 474 320
Low
High
VHN12 568 380
Low
High
VHN15 635 474
Low
High
VHN18 750 560
Low
High
VHN24 1173 625
Low
High
VHN30 1412 790
Low
High
VHN36 1504 850
Low
Notes
Airflow in CFM with wet coil and clean air filter.
■
■
All airflow is rated and shown above at the lower voltage if unit is dual voltage rated, e.g., 208V for 208-230V units.
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■
Performance stated is at the rated power supply, performance may vary as the power supply varies from the rated.
■ ■
0 0.01 0.05
361 358 341 321
316 310 294 278
424 421 398 376
361 358 341 321
551 549 535 521
470 465 455 439
626 622 604 592
551 549 535 521
821 817 814 812
768 765 762 759
1081 1075 1070 1049
956 951 942 928
1222 1219 1194 1160
1102 1096 1091 1070
Airflow (CFM) at external static pressure (in. wg)
0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
474 453 447 435 418 406 397 379 363 345 324
426 409 394 382 368 354 337 319 304 279
568 547 533 515 500 485 471 453 434 415 399
474 459 444 426 415 404 386 369 354 338
669 659 649 641 632 621 608 595 584 573 561 542 532 520 511
600 589 581 572 562 547 536 525 514 505 494 484 474
750 738 730 721 712 705 698 686 671 656 644 632 619 609 599
669 659 649 641 632 621 608 595 584 573 561
1172 1147 1129 1112 1094 1068 1041 996 947 915 882 859 838 812 785 750 732 706 685 662 638
1049 1029 1015 994 971 941 894 853 824 800 778 747 715 691 668 650 626
1412 1388 1360 1344 1324 1306 1288 1265 1244 1212 1159 1097 1056 1021 986 961 942 914 882 847
1288 1265 1247 1226 1212 1194 1174 1144 1115 1059 1015 979 947 918 897 882 850 818 794
1504 1479 1459 1442 1421 1400 1382 1356 1324 1287 1256 1215 1168 1131 1084 1018 988 959 929 888 856
1412 1388 1360 1344 1324 1306 1288 1265 1244 1212 1159 1097 1056 1021 986 961 942 914 882
Airflow (CFM) at external static pressure (in. wg)
0.1 0.15 0.2 0.25
294 268
262
350 315
305
509 490 476
428 412 397
577 561 548
509 490 476
802 790 775
751 742 722
1024 931 880
911 835 809
1129 1088 1057
1044 949 897
0.3 0.35 0.4 0.45
460 441 420 400
530 513 495 476
460
747 684 654 621
683 653 625
843 801
1017 961
860
0 0
Electrical data
0.5
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