York MFSI, Manual

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YORK® MIXED FLOW, INLINE FAN, MODEL MFSI
21
445
Wheel Dia. Outlet Area Tip Speed (FPM) Maximum BHP Max. Motor Frame Size
54.25 in. 19.7 sq. ft. 14.2 x RPM 52.33 (RPM / 1000)
3
365T
CFM OV
1/4" SP 1/2" SP 3/4" SP 1" SP 1 1/4" SP 1 1/2" SP 1 3/4" SP 2" SP 2 1/4" SP 2 1/2" SP
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
13000 660 250 0.78
302 1.41 345 2.10
- - - - - - - - - - - - - -
14500 736 266 0.92 316 1.61 357 2.34 395 3.13 - - - - - - - - - - - -
16000 812 283 1.08 330 1.83
370 2.61 406 3.44 440 4.32
- - - - - - - - - -
17500 888 301 1.26 345 2.06 384 2.90 419 3.78 451 4.70 482 5.68 - - - - - - - -
19000 964 319 1.48 360 2.32 399 3.22
432 4.15 463 5.11 493 6.12 521 7.18
- - - - - -
22400 1137 364 2.08 398 3.00 432 4.03 465 5.10 494 6.18 522 7.29 548 8.44 573 9.62 597 10.85 621 12.12
24800 1259 397 2.63 426 3.59 458 4.69 489 5.85 517 7.03 544 8.24 569 9.46 593 10.71 616 11.99 638 13.31
27200 1381 430 3.27 456 4.28 484 5.43 513 6.68 541 7.96 567 9.26
591 10.58 614 11.91 637 13.27 658 14.65
29600 1503 464 4.03 487 5.09 512 6.29 539 7.60 565 8.97 591 10.37 614 11.78 637 13.21 659 14.66 680 16.12
32000 1624 498 4.91 519 6.03 542 7.27 566 8.63 591 10.08 615 11.57 638 13.08 660 14.61
682 16.15 702 17.71
34400 1746 532 5.93 552 7.10 572 8.39 594 9.80 617 11.30 640 12.87 662 14.48 684 16.11 705 17.75 725 19.40
36800 1868 567 7.09 585 8.32 604 9.66 624 11.11 645 12.67 666 14.30 688 15.98 708 17.70 729 19.45 748 21.20
39200 1990 602 8.40 618 9.69 636 11.08 654 12.58 673 14.18 693 15.87 714 17.62 734 19.42 753 21.26 772 23.11
41600 2112 637 9.88 652 11.22 668 12.67 685 14.21 703 15.86 722 17.60 740 19.41 759 21.28 778 23.20 797 25.14
44000 2234 672 11.53 686 12.93 701 14.43 717 16.03 734 17.72 751 19.50 768 21.37 786 23.30 804 25.28 822 27.31
46400 2355 707 13.36 721 14.83 735 16.38 749 18.03 765 19.77 781 21.59 797 23.51 814 25.49 831 27.54 848 29.63
48800 2477 742 15.38 755 16.91 768 18.53 782 20.22 796 22.01 811 23.89 827 25.84 842 27.88 858 29.98 875 32.13
51200 2599 778 17.60 790 19.20 802 20.87 815 22.63 829 24.46 843 26.38 857 28.39 872 30.47 887 32.62 902 34.83
53600 2721 813 20.04 825 21.70 836 23.44 849 25.25 861 27.13 874 29.10 888 31.15 902 33.27 916 35.47 930 37.73
55000 2792 834 21.57 845 23.26 856 25.03 868 26.88 880 28.80 893 30.79 906 32.87 919 35.02 933 37.24 947 39.53
CFM OV
2 3/4" SP 3" SP 3 1/2" SP 4" SP 4 1/2" SP 5" SP 5 1/2" SP 6" SP 6 1/2" SP 7" SP
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
26500 1345 673 15.65 694 17.08 735 20.08 - - - - - - - - - - - - - -
28000 1421
686 16.57 706 18.04 745 21.09 783 24.29
- - - - - - - - - - - -
29500 1497 699 17.54 718 19.06 756 22.17 793 25.42 830 28.82 - - - - - - - - - -
31000 1574 712 18.57 732 20.13 769 23.32 804 26.63 839 30.08 874 33.67 - - - - - - - -
32500 1650
726 19.64 745 21.25 781 24.54 816 27.92 850 31.42 884 35.06 916 38.84
- - - - - -
34000 1726 740 20.76 759 22.43 795 25.81 829 29.28 862 32.85 894 36.54 926 40.36 957 44.31 - - - -
35500 1802
755 21.92 773 23.65 808 27.14 842 30.70 874 34.35 906 38.11 937 41.98 967 45.97 997 50.09
- -
37000 1878 769 23.13 787 24.91 822 28.52 856 32.19 887 35.93 918 39.76 948 43.69 978 47.74 1007 51.90 1036 56.18
38500 1954 784 24.38 802 26.22 837 29.95 869 33.73 901 37.57 931 41.49 961 45.49 989 49.60 1018 53.81 1046 58.14
40000 2030 799 25.67 817 27.58
851 31.43 883 35.32 914 39.27 944 43.28 973 47.37 1001 51.55 1029 55.83 1057 60.20
41500 2107 814 27.01 832 28.98 865 32.96 898 36.97 928 41.03 958 45.15 986 49.33 1014 53.59 1041 57.94 1068 62.38
43000 2183 829 28.40 847 30.43 880 34.54 912 38.67
942 42.85 972 47.08 1000 51.36 1027 55.71 1054 60.14 1080 64.65
44500 2259 845 29.85 862 31.94 895 36.16 926 40.43 957 44.73 986 49.07 1013 53.46 1040 57.90 1067 62.42 1093 67.01
46000 2335 860 31.35 877 33.50 910 37.84 941 42.23 971 46.66
1000 51.12 1027 55.62 1054 60.17 1080 64.78
- -
47500 2411 877 32.92 893 35.12 925 39.58 956 44.09 986 48.64 1014 53.22 1041 57.84 1068 62.51 1094 67.22 - -
49000 2487 893 34.56 909 36.80 940 41.37 971 46.01 1000 50.68 1029 55.39
1056 60.13 1082 64.91
- - - -
50500 2563 910 36.27 925 38.56 956 43.23 986 47.98 1015 52.78 1043 57.61 1070 62.48
1096 67.37
- - - -
52000 2640 926 38.06 942 40.39 972 45.16 1001 50.02 1030 54.94 1058 59.90 1085 64.89 - - - - - -
53500 2716 944 39.93 958 42.30 988 47.15 1017 52.12 1045 57.16 1073 62.24 1099 67.36 - - - - - -
55000 2792 961 41.88 976 44.29 1004 49.23 1033 54.29 1061 59.44 1088 64.65 - - - - - - - -
j
WR
2
= Inertial Starting Force
k
Maximum RPM is based on operating temperature of 100°F.
From 101°F through 200°F multiply RPM by 0.93.
Class
Fan Weight
(Lbs.)
Wheel Weight
(Lbs.)
WR
2 j
(Lbs. Ft.
2
)
Max. Wheel RPM
k
(Steel or Aluminum)
I 1923 371 766 880
II 2024 394 770 1100
Performance shown is for Installation Type B: free inlet, ducted outlet. Power rating (BHP) does not include belt drive losses. Performance ratings
do not include the effects of appurtenances in the airstream. Bold figures indicate maximum static efficiency. Approximate fan weights are less
motor and accessories.
95
15/16
(MAX)
86
73
65
1/2
52