Table 31 — Fan Performance,
AIRFLOW |
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| AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) |
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| 0.2 |
| 0.4 |
| 0.6 |
| 0.8 |
| 1.0 |
| 1.2 |
| 1.4 |
| 1.6 | |||||||||
(Cfm) |
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| Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp |
10,000 | 447 |
| 2.9 | 508 |
| 3.6 | 558 |
| 4.2 | 601 |
| 4.8 | 640 |
| 5.4 | 675 |
| 6.0 | 707 |
| 6.6 | 738 |
| 7.3 |
12,000 | 509 |
| 4.4 | 567 |
| 5.1 | 615 |
| 5.8 | 657 |
| 6.5 | 695 |
| 7.2 | 729 |
| 7.9 | 761 |
| 8.6 | 791 |
| 9.3 |
15,000 | 606 |
| 7.3 | 659 |
| 8.2 | 704 |
| 9.0 | 744 |
| 9.9 | 780 |
| 10.7 | 813 |
| 11.5 | 844 |
| 12.2 | 874 |
| 13.0 |
16,000 | 639 |
| 8.5 | 690 |
| 9.4 | 734 |
| 10.3 | 773 |
| 11.2 | 809 |
| 12.0 | 842 |
| 12.9 | 873 |
| 13.7 | 902 |
| 14.5 |
17,000 | 672 |
| 9.8 | 721 |
| 10.8 | 765 |
| 11.7 | 803 |
| 12.6 | 838 |
| 13.5 | 871 |
| 14.4 | 901 |
| 15.3 | 930 |
| 16.1 |
18,000 | 705 |
| 11.2 | 753 |
| 12.3 | 795 |
| 13.3 | 833 |
| 14.2 | 868 |
| 15.1 | 900 |
| 16.1 | 930 |
| 17.0 | 959 |
| 17.8 |
19,000 | 738 |
| 12.8 | 785 |
| 13.9 | 826 |
| 14.9 | 864 |
| 15.9 | 898 |
| 16.9 | 929 |
| 17.8 | 959 |
| 18.8 | 987 |
| 19.7 |
20,000 | 772 |
| 14.5 | 817 |
| 15.6 | 858 |
| 16.7 | 894 |
| 17.7 | 928 |
| 18.8 | 959 |
| 19.7 | 989 |
| 20.7 | 1016 |
| 21.7 |
21,000 | 806 |
| 16.3 | 850 |
| 17.5 | 889 |
| 18.6 | 925 |
| 19.7 | 958 |
| 20.8 | 989 |
| 21.8 | 1018 |
| 22.8 | 1046 |
| 23.8 |
22,000 | 840 |
| 18.3 | 883 |
| 19.5 | 921 |
| 20.7 | 956 |
| 21.8 | 989 |
| 22.9 | 1019 |
| 24.0 | 1048 |
| 25.0 | 1075 |
| 26.1 |
23,000 | 874 |
| 20.4 | 915 |
| 21.7 | 953 |
| 22.9 | 987 |
| 24.1 | 1019 |
| 25.2 | 1049 |
| 26.3 | 1078 |
| 27.4 | 1105 |
| 28.5 |
24,000 | 908 |
| 22.7 | 948 |
| 24.0 | 985 |
| 25.3 | 1019 |
| 26.5 | 1050 |
| 27.6 | 1080 |
| 28.8 | 1108 |
| 29.9 | 1135 |
| 31.0 |
25,000 | 942 |
| 25.1 | 982 |
| 26.5 | 1018 |
| 27.8 | 1051 |
| 29.0 | 1082 |
| 30.2 | 1111 |
| 31.4 | 1138 |
| 32.6 | 1165 |
| 33.7 |
26,000 | 976 |
| 27.7 | 1015 |
| 29.1 | 1050 |
| 30.4 | 1083 |
| 31.7 | 1113 |
| 33.0 | 1142 |
| 34.2 | 1169 |
| 35.4 | 1195 |
| 36.6 |
27,000 | 1011 |
| 30.4 | 1048 |
| 31.9 | 1083 |
| 33.2 | 1115 |
| 34.6 | 1145 |
| 35.9 | 1173 |
| 37.1 | 1200 |
| 38.4 | — |
| — |
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AIRFLOW |
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| AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) |
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| 1.8 |
| 2.0 |
| 2.2 |
| 2.4 |
| 2.6 |
| 2.8 |
| 3.0 |
| 3.2 | |||||||||
(Cfm) |
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| Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp | Rpm |
| Bhp |
10,000 | 766 |
| 7.9 | 794 |
| 8.50 | 820 |
| 9.13 | 844 |
| 9.76 | 868 |
| 10.40 | 891 |
| 11.04 | 914 |
| 11.69 | 935 |
| 12.34 |
12,000 | 820 |
| 9.9 | 847 |
| 10.62 | 872 |
| 11.30 | 897 |
| 11.99 | 921 |
| 12.68 | 943 |
| 13.37 | 965 |
| 14.07 | 987 |
| 14.77 |
15,000 | 901 |
| 13.8 | 928 |
| 14.59 | 953 |
| 15.36 | 977 |
| 16.14 | 1001 |
| 16.92 | 1023 |
| 17.69 | 1045 |
| 18.47 | 1066 |
| 19.26 |
16,000 | 929 |
| 15.3 | 955 |
| 16.14 | 981 |
| 16.95 | 1005 |
| 17.75 | 1028 |
| 18.56 | 1050 |
| 19.37 | 1072 |
| 20.18 | 1093 |
| 20.98 |
17,000 | 957 |
| 17.0 | 983 |
| 17.81 | 1008 |
| 18.65 | 1032 |
| 19.49 | 1055 |
| 20.33 | 1077 |
| 21.16 | 1099 |
| 22.00 | 1120 |
| 22.84 |
18,000 | 986 |
| 18.7 | 1011 |
| 19.60 | 1036 |
| 20.48 | 1060 |
| 21.35 | 1083 |
| 22.22 | 1105 |
| 23.08 | 1126 |
| 23.95 | 1147 |
| 24.82 |
19,000 | 1014 |
| 20.6 | 1040 |
| 21.53 | 1064 |
| 22.43 | 1088 |
| 23.34 | 1110 |
| 24.24 | 1132 |
| 25.14 | 1154 |
| 26.03 | 1174 |
| 26.93 |
20,000 | 1043 |
| 22.6 | 1068 |
| 23.58 | 1092 |
| 24.52 | 1116 |
| 25.46 | 1138 |
| 26.39 | 1160 |
| 27.32 | 1181 |
| 28.25 | — |
| — |
21,000 | 1072 |
| 24.8 | 1097 |
| 25.78 | 1121 |
| 26.75 | 1144 |
| 27.72 | 1167 |
| 28.68 | 1188 |
| 29.64 | — |
| — | — |
| — |
22,000 | 1101 |
| 27.1 | 1126 |
| 28.11 | 1150 |
| 29.12 | 1173 |
| 30.12 | 1195 |
| 31.11 | — |
| — | — |
| — | — |
| — |
23,000 | 1130 |
| 29.5 | 1155 |
| 30.58 | 1179 |
| 31.62 | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — |
24,000 | 1160 |
| 32.1 | 1184 |
| 33.20 | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — |
25,000 | 1190 |
| 34.9 | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — |
26,000 | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — |
27,000 | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — | — |
| — |
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW |
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| 3.4 |
| 3.6 |
| 3.8 | ||
(Cfm) |
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Rpm | Bhp | Rpm | Bhp | Rpm | Bhp | ||
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10,000 | 956 | 12.99 | 976 | 13.66 | 996 | 14.32 |
LEGEND
Bhp — Brake Horsepower
NOTES:
1.Fan performance is based on dry coils, economizer, roof curb, cabinet losses, and clean
2.Conversion — Bhp to watts:
12,000 | 1008 | 15.48 | 1028 | 16.19 | 1047 | 16.90 |
Watts =
Bhp x 746
15,000 | 1087 | 20.04 | 1106 | 20.82 | 1126 | 21.61 |
16,000 | 1113 | 21.80 | 1133 | 22.61 | 1152 | 23.42 |
17,000 | 1140 | 23.68 | 1160 | 24.52 | 1179 | 25.36 |
18,000 | 1167 | 25.68 | 1187 | 26.55 | — | — |
19,000 | 1195 | 27.82 | — | — | — | — |
20,000 | — | — | — | — | — | — |
21,000 | — | — | — | — | — | — |
22,000 | — | — | — | — | — | — |
23,000 | — | — | — | — | — | — |
24,000 | — | — | — | — | — | — |
25,000 | — | — | — | — | — | — |
26,000 | — | — | — | — | — | — |
27,000 | — | — | — | — | — | — |
Motor Efficiency
3.Variable Air Volume units will operate down to 70 cfm/ton in the cooling mode. Performance at 70 cfm/ton is limited to unloaded operation and may be additionally limited by edb (entering dry bulb) and ewb (entering wet bulb) conditions.
77