Carrier WEATHERMAKER 48/50AJ Operation And Service Manual page 12

AIRFLOW
0.2 0.4
(Cfm)
Rpm Bhp Rpm
12,000 476 4.33 534
14,000 536 6.19 588
15,000 566 7.28 617
16,000 597 8.48 645
17,000 628 9.80 674
18,000 659 11.25 704
19,000 691 12.82 734
20,000 723 14.53 764
21,000 755 16.37 794
22,000 787 18.35 825
23,000 819 20.48 856
24,000 851 22.75 887
25,000 883 25.17 918
26,000 916 27.76 950
27,000 948 30.49 981
AIRFLOW
2.2 2.4
(Cfm)
Rpm Bhp Rpm
12,000 881 12.78 911 13.72
14,000 920 15.06 948 16.06
15,000 940 16.36 968 17.38
16,000 961 17.76 989 18.80 1016 19.86 1042 20.92 1067 22.00 1092 23.08 1116 24.17 1140 25.28 1162 26.38 1185 27.49
17,000 983 19.28 1010 20.34 1036 21.42 1062 22.51 1087 23.60 1112 24.71 1135 25.83 1159 26.95 1181 28.09
18,000 1005 20.94 1032 22.01 1058 23.11 1083 24.21 1108 25.33 1132 26.46 1156 27.60 1178 28.74
19,000 1027 22.72 1054 23.81 1080 24.92 1105 26.04 1129 27.18 1153 28.33 1176 29.48 1199 30.65
20,000 1050 24.65 1076 25.76 1102 26.88 1126 28.01 1151 29.17 1174 30.33 1197 31.50
21,000 1073 26.73 1099 27.84 1124 28.97 1149 30.13 1173 31.29 1196 32.47
22,000 1097 28.95 1123 30.08 1147 31.22 1172 32.39 1195 33.56
23,000 1122 31.33 1147 32.47 1171 33.63 1195 34.80
24,000 1146 33.87 1171 35.02 1195 36.19
25,000 1171 36.58 1196 37.74
26,000 1197 39.46 —
27,000 — — —
Table 12 — Fan Performance — 50AJ,AK020,025 and 50A2,A3020 Units
AIRFLOW
0.2 0.4
(CFM)
Rpm Bhp Rpm
4,000 311 0.54 390
5,000 347 0.84 417
6,000 387 1.25 450
7,000 430 1.77 488
7,500 452 2.07 507
8,000 474 2.41 528
9,000 519 3.19 570
10,000 565 4.10 613
11,000 611 5.17 657
12,000 658 6.39 702
12,500 681 7.06 725
13,000 705 7.77 748
AIRFLOW
2.2 2.4
(CFM)
Rpm Bhp Rpm
4,000 802 2.21 833
5,000 822 2.71 854
6,000 842 3.29 874
7,000 862 3.96 894
7,500 872 4.33 904
8,000 883 4.73 914
9,000 905 5.60 936
10,000 931 6.58 961
11,000 958 7.70 987
12,000 989 8.97 1016
12,500 1005 9.66 1032
13,000 1021 10.39 1048
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.
Table 11 — Fan Performance — 48AJ,AK,A2,A3060 Units
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.6 0.8
Bhp Rpm Bhp Rpm Bhp
5.04 585 5.78 632 6.56
6.96 636 7.74 680 8.56
8.09 662 8.90 704 9.73
9.34 689 10.17 730 11.02
10.71 717 11.58 756 12.45
12.21 745 13.11 783 14.00
13.84 773 14.77 810 15.69
15.60 802 16.57 838 17.52
17.49 831 18.51 866 19.49
19.53 861 20.59 894 21.60
21.71 890 22.81 923 23.87
24.04 920 25.19 952 26.28
26.52 951 27.72 982 28.84 1011 29.94 1040 31.02 1068 32.11 1095 33.21 1121 34.31 1147 35.44
29.15 981 30.40 1011 31.57 1040 32.70 1068 33.81 1095 34.92 1122 36.04 1147 37.16 1172 38.30
31.95 1012 33.24 1041 34.46 1070 35.62 1097 36.76 1123 37.90 1149 39.04 1174 40.18 1199 41.34
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.6 2.8
Bhp Rpm Bhp Rpm Bhp
939 14.67 967 15.62
976 17.07 1003 18.08 1029 19.11 1054 20.13 1079 21.17 1103 22.21 1126 23.26 1149 24.31
996 18.41 1022 19.45 1048 20.50 1073 21.56 1097 22.63 1121 23.70 1144 24.78 1167 25.86
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AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.6 0.8
Bhp Rpm Bhp Rpm Bhp
0.71 457 0.88 515 1.05
1.02 480 1.21 536 1.40
1.43 507 1.63 560 1.84
1.96 540 2.17 588 2.38
2.27 557 2.48 604 2.70
2.61 576 2.82 620 3.04
3.39 614 3.60 656 3.83
4.31 655 4.53 694 4.76
5.37 697 5.60 734 5.84
6.60 741 6.83 776 7.07
7.27 763 7.50 797 7.74
7.98 785 8.21 819 8.46
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.6 2.8
Bhp Rpm Bhp Rpm Bhp
2.38 864 2.55 893 2.71
2.89 885 3.08 914 3.26
3.50 905 3.70 934 3.90
4.19 924 4.41 954 4.63
4.56 934 4.79 964 5.02
4.97 945 5.21 974 5.45
5.85 966 6.11 995 6.37
6.85 990 7.13 1018 7.40
7.99 1015 8.27 1043 8.55
9.26 1043 9.55 1070 9.85
9.95 1058 10.25 1084 10.55
10.69 1074 10.99 1099 11.29
1.0 1.2
Rpm Bhp Rpm Bhp Rpm
674 7.39 714 8.24 751
720 9.41 758 10.30 793 11.21
744 10.59 781 11.50 816 12.42
768 11.90 804 12.82 839 13.76
793 13.34 829 14.27 862 15.23
819 14.91 853 15.85 886 16.82
845 16.62 879 17.58 911 18.56
872 18.47 905 19.44 936 20.44
899 20.47 931 21.46 961 22.47
927 22.61 958 23.62 987 24.64 1016 25.69 1044 26.76 1071 27.84
954 24.90 985 25.93 1014 26.97 1042 28.03 1069 29.11 1096 30.21
983 27.34 1012 28.40 1041 29.46 1068 30.54 1095 31.63 1121 32.74
3.0 3.2
Rpm Bhp Rpm Bhp Rpm
993 16.58 1019 17.54 1045 18.51 1069 19.48 1093 20.45 1117 21.43
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1.0 1.2
Rpm Bhp Rpm Bhp Rpm
567 1.21 613 1.38 656
587 1.59 633 1.78 676
609 2.05 654 2.26 696
634 2.61 677 2.83 718
648 2.93 690 3.16 730
663 3.28 704 3.52 743
696 4.07 734 4.32 771
731 5.00 767 5.26 802
769 6.08 803 6.34 836
809 7.32 841 7.58 872
830 8.00 861 8.26 891
850 8.71 881 8.98 910
3.0 3.2
Rpm Bhp Rpm Bhp Rpm
921 2.88 949 3.06 975
943 3.45 970 3.64 997
963 4.10 991 4.31 1017
983 4.85 1010 5.07 1037
993 5.25 1020 5.48 1047
1003 5.68 1030 5.92 1057
1023 6.62 1051 6.88 1077
1046 7.67 1073 7.94 1099
1070 8.84 1096 9.12 1122
1096 10.14 1121 10.44 1146
1110 10.85 1135 11.15 1159
1124 11.59 1149 11.90 1173
2. Conversion — Bhp to watts:
Bhp x 746
Watts =
Motor efficiency
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.
12
1.4 1.6 1.8
Bhp Rpm Bhp Rpm Bhp
9.12 786 10.02 819 10.93
827 12.15 859 13.11
849 13.38 881 14.36
871 14.73 902 15.72
894 16.21 925 17.21
918 17.82 948 18.84
942 19.57 971 20.60 1000 21.65
966 21.45 995 22.50 1023 23.57
991 23.50 1019 24.55 1047 25.63
3.4 3.6 3.8
Bhp Rpm Bhp Rpm Bhp
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1.4 1.6 1.8
Bhp Rpm Bhp Rpm Bhp
1.55 696 1.71 733 1.88
1.97 716 2.16 753 2.34
2.47 735 2.68 773 2.88
3.06 756 3.29 793 3.51
3.40 768 3.63 804 3.87
3.76 780 4.00 816 4.24
4.57 806 4.82 840 5.08
5.51 835 5.78 868 6.04
6.60 868 6.87 899 7.15
7.85 902 8.12 932 8.40
8.53 920 8.80 949 9.08
9.25 939 9.53 967 9.81
3.4 3.6 3.8
Bhp Rpm Bhp Rpm Bhp
3.23 1001 3.40 1026 3.58
3.82 1023 4.01 1048 4.20
4.51 1043 4.71 1069 4.91
5.29 1063 5.51 1089 5.72
5.71 1073 5.94 1099 6.16
6.16 1083 6.39 1108 6.63
7.13 1103 7.38 1129 7.64
8.21 1124 8.48 1149 8.75
9.41 1147 9.69 1171 9.98
10.73 1171 11.03 1195 11.33
11.45 1183 11.75 —
12.20 1197 12.51 —
2.0
Rpm Bhp
851 11.85
890 14.08
911 15.35
932 16.73
954 18.24
977 19.88
4.0
Rpm Bhp
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2.0
Rpm Bhp
768 2.04
788 2.52
808 3.09
828 3.74
839 4.10
850 4.48
873 5.34
900 6.31
929 7.42
960 8.68
977 9.37
994 10.10
4.0
Rpm Bhp
1050 3.75
1072 4.39
1093 5.12
1113 5.94
1123 6.39
1133 6.87
1153 7.89
1174 9.02
1195 10.26
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