Table 64: YV40 bottom duct application
Available external static pressure - IWG
0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.5
Air Flow
(CFM)
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Standard 10HP
and field drive
Std 10HP and drive Medium 15HP and drive High 20 HP and drive
12000 600 4.41 633 4.818 666 5.255 699 5.72 731 6.227 764 6.765 796 7.34 828 7.95 860 8.59 892 9.28 924 10 940 10.4
13000 621 5.08 654 5.536 687 6.023 720 6.54 753 7.10 785 7.692 817 8.32 850 8.99 882 9.7 914 10.4 945 11.2 961 11.6
14000 645 5.89 678 6.391 711 6.928 743 7.50 776 8.11 809 8.763 841 9.45 873 10.2 905 11 937 11.8 969 12.6 985 13.1
15000 670 6.84 703 7.393 736 7.982 769 8.61 802 9.28 834 10.00 866 10.8 899 11.6 931 12.4 963 13.3 994 14.3 1010 14.8
16000 698 7.95 731 8.554 764 9.20 797 9.89 829 10.63 862 11.42 894 12.3 926 13.1 958 14.1 990 15.1 1022 16.2 1038 16.7
17000 727 9.23 760 9.885 793 10.60 826 11.36 859 12.18 891 13.05 923 14 956 15 988 16 1020 17.2 1051 18.4 - -
18000 759 10.7 792 11.41 825 12.20 857 13.05 890 13.96 922 14.95 955 16 987 17.1 1019 18.3 1051 19.6 - - - -
19000 792 12.3 825 13.15 858 14.04 890 15.00 923 16.04 956 17.16 988 18.4 1020 19.7 1052 21 - - - - - -
20000 827 14.2 860 15.16 892 16.17 925 17.28 958 18.48 990 19.78 1023 21.2 1055 22.7 - - - - - - - -
Note: Blower performance includes gas heat exchangers and 2-in. filters. See the Static resistance
table for additional applications. See the RPM selection table to determine the required motor sheave
setting and to determine the maximum continuous BHP. kW = BHP x 0.93
Table 65: YV50 bottom duct application
Available external static pressure - IWG
0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.5
Air Flow
(CFM)
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Standard 10HP
and field drive
Standard 10HP and drive Medium 15HP and drive High 20 HP and drive
12000 616 4.61 649 5.02 681 5.47 714 5.95 746 6.47 778 7.02 811 7.61 843 8.24 875 8.9 907 9.6 939 10.3 954 10.7
13000 639 5.33 672 5.8 705 6.3 737 6.84 770 7.41 802 8.02 834 8.67 866 9.35 898 10.1 930 10.9 962 11.7 978 12.1
14000 665 6.2 698 6.72 731 7.27 763 7.87 796 8.5 828 9.17 860 9.89 892 10.6 924 11.4 956 12.3 988 13.2 1004 13.7
15000 693 7.22 726 7.79 759 8.41 791 9.06 824 9.76 856 10.5 888 11.3 920 12.1 952 13 984 14 1016 14.9 1032 15.5
16000 723 8.41 756 9.04 789 9.72 821 10.4 854 11.2 886 12 918 12.9 950 13.9 982 14.8 1014 15.9 1046 17 1062 17.6
17000 756 9.79 788 10.5 821 11.2 853 12 886 12.9 918 13.8 950 14.8 983 15.9 1015 17 1046 18.2 - - - -
18000 790 11.4 822 12.1 855 13 888 13.9 920 14.9 952 15.9 985 17 1017 18.2 1049 19.5 - - - - - -
19000 826 13.2 858 14.1 891 15 924 16.1 956 17.2 988 18.4 1020 19.7 1053 21 - - - - - - - -
20000 863 15.3 896 16.3 929 17.4 961 18.6 994 19.9 1026 21.3 - - - - - - - - - - - -
Note: Blower performance includes gas heat exchangers and 2-in. filters. See the Static resistance
table for additional applications. See the RPM selection table to determine the required motor sheave
setting and to determine the maximum continuous BHP. kW = BHP x 0.93
Air balance
CAUTION
On VAV units verify that the VFD drive is set to
maximum output, exhaust dampers are closed, and
individual space damper boxes are full open. VFD
units with bypass must not be in bypass mode (LINE
position) unless all individual space dampers are full
open.
Start the supply air blower motor. Adjust the
resistances in both the supply and the return
air duct systems to balance the air distribution
throughout the conditioned space. The job
specifications may require that this balancing
be done by someone other than the equipment
installer.
Installation Manual: YORK
®
Sun
™
Select YV28 to YV50
81
Johnson Controls Ducted Systems
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