17
Table 21 — Fan Performance — 50A4,A5,A8,A9020 Units
Table 22 — Fan Performance — 50A4,A5,A8,A9025-030 Units
LEGEND
Bhp — Brake Horsepower
edb — Entering Dry Bulb
ewb — Entering Wet Bulb
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
3. Variable air volume units will operate down to 70 cfm/ton. Performance at 70
cfm/ton is limited to unloaded operation and may be additionally limited by edb
and ewb conditions and Humidi-MiZer operation.
AIRFLOW
(CFM)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.20.40.60.81.01.21.41.61.82.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
4,000 322 0.62 399 0.82 464 1.04 521 1.26 572 1.48 619 1.71 662 1.93 702 2.16 739 2.38 774 2.61
5,000 361 0.95 431 1.17 491 1.41 545 1.65 594 1.89 640 2.14 682 2.39 722 2.64 759 2.89 795 3.14
6,000 405 1.41 467 1.64 524 1.88 574 2.14 621 2.40 664 2.67 705 2.93 744 3.20 780 3.47 816 3.75
7,000 451 2.00 508 2.22 559 2.48 607 2.75 651 3.02 693 3.30 732 3.58 769 3.87 804 4.16 839 4.45
7,500 475 2.34 529 2.57 579 2.82 625 3.10 668 3.38 708 3.66 746 3.96 783 4.25 818 4.55 851 4.84
8,000 500 2.72 551 2.95 598 3.21 643 3.48 685 3.77 724 4.06 762 4.36 797 4.66 832 4.96 864 5.27
9,000 550 3.60 596 3.83 640 4.09 682 4.36 721 4.66 759 4.96 795 5.27 829 5.58 862 5.90 893 6.22
10,000 601 4.63 644 4.86 684 5.12 723 5.40 760 5.70 796 6.01 830 6.33 863 6.65 894 6.98 925 7.31
11,000 653 5.83 692 6.07 730 6.33 766 6.61 801 6.91 835 7.22 867 7.54 899 7.87 929 8.21 958 8.55
12,000 706 7.20 742 7.45 777 7.71 811 7.99 844 8.29 875 8.61 906 8.93 936 9.27 966 9.61 994 9.96
12,500 732 7.96 768 8.20 801 8.47 834 8.75 866 9.05 897 9.37 927 9.69 956 10.03 985 10.38 1012 10.73
13,000 759 8.76 793 9.01 826 9.27 857 9.56 888 9.86 918 10.17 947 10.50 976 10.84 1004 11.19 1031 11.54
AIRFLOW
(CFM)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.22.42.62.83.03.23.43.63.84.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
4,000 808 2.84 840 3.06 870 3.29 900 3.52 928 3.75 955 3.98 981 4.21 1007 4.44 1031 4.67 1055 4.91
5,000 829 3.39 861 3.64 892 3.89 922 4.14 950 4.40 978 4.65 1005 4.90 1031 5.16 1056 5.41 1080 5.67
6,000 849 4.02 881 4.29 912 4.57 942 4.84 971 5.12 999 5.39 1026 5.67 1052 5.94 1077 6.22 1102 6.49
7,000 871 4.74 903 5.03 933 5.33 963 5.62 991 5.92 1019 6.21 1046 6.51 1072 6.80 1098 7.10 1123 7.40
7,500 883 5.14 915 5.44 945 5.75 974 6.05 1002 6.35 1030 6.66 1057 6.96 1083 7.27 1108 7.58 1133 7.88
8,000 896 5.58 927 5.89 957 6.20 985 6.51 1014 6.82 1041 7.13 1067 7.45 1093 7.76 1118 8.08 1143 8.39
9,000 924 6.54 954 6.86 983 7.19 1011 7.51 1038 7.84 1064 8.17 1090 8.50 1116 8.83 1141 9.16 1165 9.49
10,000 954 7.64 983 7.98 1011 8.31 1038 8.65 1065 8.99 1091 9.34 1116 9.68 1141 10.02 1165 10.37 1189 10.72
11,000 987 8.89 1015 9.24 1042 9.59 1068 9.94 1094 10.29 1119 10.65 1144 11.01 1168 11.36 1191 11.72 — —
12,000 1022 10.31 1048 10.67 1075 11.03 1100 11.39 1125 11.75 1150 12.12 1173 12.48 1197 12.85 — — — —
12,500 1039 11.08 1066 11.44 1092 11.81 1117 12.17 1141 12.54 1165 12.91 1189 13.28 ——————
13,000 1058 11.90 1084 12.26 1109 12.63 1134 13.00 1158 13.37 1182 13.75 ————————
AIRFLOW
(CFM)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.20.40.60.81.01.21.41.61.82.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
4,000 325 0.62 402 0.83 466 1.05 523 1.27 574 1.49 620 1.72 663 1.94 703 2.17 740 2.39 776 2.62
5,000 366 0.97 435 1.19 495 1.42 548 1.67 597 1.91 642 2.16 685 2.41 724 2.65 762 2.90 797 3.16
6,000 411 1.43 473 1.66 529 1.91 579 2.16 625 2.43 668 2.69 709 2.96 747 3.23 784 3.50 819 3.77
7,000 459 2.02 515 2.25 566 2.51 613 2.78 657 3.06 698 3.34 737 3.62 774 3.91 809 4.20 843 4.49
8,000 508 2.76 559 2.99 606 3.25 650 3.53 691 3.82 731 4.11 768 4.41 803 4.71 837 5.01 870 5.32
9,000 560 3.64 605 3.88 649 4.14 690 4.42 729 4.72 766 5.02 802 5.33 835 5.64 868 5.96 900 6.28
10,000 612 4.68 654 4.92 694 5.19 732 5.47 769 5.77 804 6.09 838 6.40 870 6.73 902 7.06 932 7.39
11,000 665 5.89 703 6.14 740 6.41 776 6.69 811 7.00 844 7.31 876 7.64 907 7.97 937 8.31 967 8.65
12,000 718 7.28 754 7.53 788 7.80 822 8.09 854 8.39 886 8.71 916 9.04 946 9.38 975 9.72 1003 10.07
13,000 772 8.85 806 9.11 838 9.38 869 9.67 899 9.98 929 10.30 958 10.63 987 10.97 1014 11.32 1041 11.68
14,000 826 10.61 858 10.87 888 11.15 917 11.44 946 11.75 974 12.07 1002 12.41 1029 12.75 1055 13.10 1081 13.46
15,000 881 12.57 910 12.84 939 13.12 967 13.41 994 13.72 1021 14.05 1047 14.38 1073 14.73 1098 15.08 1123 15.45
AIRFLOW
(CFM)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.22.42.62.83.03.23.43.63.84.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
4,000 809 2.84 841 3.07 872 3.30 901 3.53 929 3.76 956 3.99 982 4.22 1008 4.45 1032 4.68 1056 4.92
5,000 831 3.41 863 3.66 894 3.91 924 4.16 952 4.41 980 4.67 1007 4.92 1032 5.17 1057 5.43 1082 5.68
6,000 852 4.05 884 4.32 915 4.59 945 4.87 974 5.14 1001 5.42 1028 5.69 1054 5.97 1080 6.24 1105 6.52
7,000 875 4.78 907 5.07 937 5.37 967 5.66 995 5.95 1023 6.25 1049 6.55 1076 6.84 1101 7.14 1126 7.44
8,000 901 5.63 932 5.94 961 6.25 990 6.56 1018 6.87 1045 7.18 1072 7.50 1097 7.81 1123 8.13 1147 8.44
9,000 930 6.60 960 6.93 988 7.25 1016 7.58 1043 7.91 1070 8.23 1096 8.57 1121 8.90 1146 9.23 1170 9.56
10,000 961 7.72 990 8.06 1018 8.40 1045 8.74 1071 9.08 1097 9.42 1122 9.76 1147 10.11 1171 10.46 1194 10.80
11,000 995 8.99 1022 9.34 1049 9.69 1075 10.04 1101 10.39 1126 10.75 1151 11.11 1175 11.47 1198 11.82 — —
12,000 1030 10.43 1057 10.78 1083 11.14 1108 11.51 1133 11.87 1157 12.24 1181 12.61 ——————
13,000 1068 12.04 1093 12.40 1119 12.77 1143 13.14 1167 13.52 1191 13.89 ————————
14,000 1107 13.83 1131 14.20 1156 14.58 1179 14.96 ————————————
15,000 1147 15.82 1171 16.19 1194 16.58 ——————————————
Watts =
Bhp x 746
Motor efficiency
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