Carrier WEATHERMAKER 48/50AJ User Manual
Page 8

8
Table 3 — Fan Performance — 48AJ,AK020,025 and 48A2,A3020 Units
Table 4 — Fan Performance — 48AJ,AK027,030 and 48A2,A3025-030 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.
AIRFLOW
(CFM)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
4,000
328
0.62
406
0.84
472
1.07
529
1.30
580
1.54
626
1.78
668
2.02
708
2.27
745
2.51
780
2.76
5,000
369
0.97
439
1.19
500
1.43
554
1.69
604
1.95
650
2.21
692
2.48
731
2.74
769
3.01
804
3.28
6,000
415
1.43
477
1.65
533
1.90
584
2.17
631
2.45
676
2.73
717
3.01
756
3.30
793
3.59
828
3.88
7,000
463
2.01
519
2.25
570
2.50
618
2.78
662
3.06
704
3.36
744
3.65
782
3.96
818
4.27
852
4.58
7,500
488
2.36
541
2.60
590
2.86
636
3.13
679
3.42
720
3.72
759
4.02
796
4.33
832
4.65
866
4.96
8,000
513
2.74
564
2.98
611
3.24
655
3.52
697
3.81
737
4.11
775
4.42
811
4.74
846
5.06
879
5.38
9,000
564
3.61
612
3.87
655
4.13
696
4.42
735
4.71
772
5.02
808
5.33
843
5.65
876
5.98
909
6.32
10,000
616
4.64
661
4.91
701
5.18
739
5.47
776
5.77
811
6.08
845
6.40
878
6.72
909
7.06
940
7.40
11,000
669
5.84
711
6.11
749
6.40
785
6.69
819
6.99
852
7.30
884
7.63
915
7.96
945
8.30
975
8.65
12,000
723
7.20
762
7.49
798
7.78
831
8.08
864
8.39
895
8.71
925
9.04
955
9.37
984
9.72
1012
10.07
12,500
750
7.95
788
8.25
823
8.54
855
8.85
887
9.16
917
9.48
947
9.81
976
10.15
1004
10.49
1031
10.84
13,000
777
8.75
814
9.05
848
9.35
880
9.66
910
9.97
940
10.30
969
10.63
997
10.97
1024
11.31
1051
11.67
AIRFLOW
(CFM)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
4,000
814
3.01
845
3.26
876
3.51
905
3.76
934
4.02
961
4.28
987
4.54
1013
4.80
1038
5.06
1062
5.32
5,000
837
3.55
869
3.82
900
4.10
929
4.37
958
4.64
985
4.92
1012
5.20
1038
5.48
1063
5.76
1087
6.04
6,000
861
4.17
893
4.46
923
4.76
953
5.05
981
5.35
1009
5.65
1036
5.94
1062
6.24
1087
6.54
1111
6.84
7,000
885
4.89
917
5.20
947
5.51
977
5.83
1005
6.14
1033
6.46
1059
6.78
1085
7.09
1110
7.41
1135
7.73
7,500
898
5.28
930
5.61
960
5.93
989
6.25
1017
6.58
1045
6.90
1071
7.23
1097
7.56
1122
7.88
1147
8.21
8,000
912
5.71
943
6.04
973
6.37
1002
6.70
1030
7.04
1057
7.37
1083
7.71
1109
8.04
1134
8.38
1159
8.72
9,000
940
6.66
970
7.00
999
7.35
1028
7.69
1055
8.04
1082
8.39
1109
8.75
1134
9.10
1159
9.45
1183
9.81
10,000
971
7.75
1000
8.10
1028
8.46
1056
8.82
1083
9.18
1109
9.54
1135
9.91
1160
10.28
1185
10.65
—
—
11,000
1004
9.00
1032
9.36
1059
9.73
1086
10.09
1112
10.46
1138
10.84
1163
11.22
1188
11.60
—
—
—
—
12,000
1039
10.42
1066
10.79
1093
11.16
1119
11.53
1144
11.91
1169
12.30
1193
12.68
—
—
—
—
—
—
12,500
1058
11.20
1085
11.57
1110
11.94
1136
12.32
1161
12.70
1185
13.09
—
—
—
—
—
—
—
—
13,000
1077
12.03
1103
12.40
1129
12.77
1154
13.15
1178
13.54
—
—
—
—
—
—
—
—
—
—
AIRFLOW
(CFM)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
4,000
331
0.63
408
0.85
474
1.08
531
1.31
581
1.55
627
1.79
670
2.03
709
2.28
746
2.52
781
2.77
5,000
374
0.98
443
1.20
503
1.45
558
1.70
607
1.96
653
2.23
695
2.49
734
2.76
771
3.03
806
3.30
6,000
421
1.45
482
1.68
538
1.93
589
2.20
636
2.47
680
2.75
721
3.04
759
3.33
796
3.62
831
3.91
7,000
471
2.04
526
2.28
576
2.54
623
2.81
668
3.10
710
3.39
749
3.69
787
4.00
823
4.31
857
4.62
8,000
522
2.78
572
3.03
619
3.29
662
3.57
704
3.86
743
4.16
781
4.47
817
4.79
851
5.11
885
5.44
9,000
574
3.66
621
3.92
664
4.19
704
4.47
743
4.77
780
5.08
815
5.40
850
5.72
883
6.05
915
6.39
10,000
628
4.71
671
4.97
711
5.25
748
5.54
784
5.84
819
6.15
853
6.47
885
6.81
917
7.14
948
7.49
11,000
682
5.91
722
6.19
759
6.48
795
6.77
828
7.08
861
7.40
893
7.72
924
8.06
954
8.40
983
8.75
12,000
736
7.30
774
7.59
809
7.88
842
8.18
874
8.49
905
8.82
935
9.15
965
9.48
993
9.83
1021
10.19
13,000
791
8.86
827
9.16
860
9.46
891
9.78
922
10.09
951
10.42
979
10.75
1007
11.10
1034
11.45
1061
11.80
14,000
846
10.61
880
10.93
912
11.24
941
11.56
970
11.88
998
12.21
1025
12.56
1052
12.90
1078
13.26
1103
13.62
15,000
902
12.56
934
12.89
964
13.21
992
13.54
1020
13.87
1046
14.21
1072
14.55
1098
14.91
1122
15.26
1147
15.63
AIRFLOW
(CFM)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
4,000
815
3.02
847
3.27
877
3.52
906
3.77
935
4.03
962
4.29
988
4.55
1014
4.81
1039
5.07
1063
5.33
5,000
839
3.57
871
3.84
902
4.11
931
4.39
960
4.66
987
4.94
1014
5.22
1039
5.50
1064
5.78
1089
6.06
6,000
864
4.20
896
4.49
926
4.79
956
5.08
984
5.38
1012
5.68
1038
5.97
1064
6.27
1089
6.57
1114
6.87
7,000
890
4.93
921
5.24
951
5.55
980
5.87
1009
6.18
1036
6.50
1063
6.82
1088
7.14
1114
7.45
1138
7.77
8,000
917
5.76
948
6.09
977
6.42
1006
6.76
1034
7.09
1061
7.43
1088
7.76
1113
8.10
1138
8.43
1163
8.77
9,000
946
6.73
976
7.07
1005
7.42
1033
7.76
1061
8.11
1088
8.46
1114
8.82
1139
9.17
1164
9.52
1188
9.88
10,000
978
7.84
1007
8.19
1035
8.55
1063
8.91
1089
9.27
1116
9.63
1141
10.00
1166
10.37
1191
10.74
—
—
11,000
1012
9.10
1040
9.47
1067
9.83
1094
10.20
1120
10.57
1145
10.95
1170
11.33
1195
11.71
—
—
—
—
12,000
1048
10.54
1075
10.91
1102
11.28
1127
11.66
1152
12.04
1177
12.42
—
—
—
—
—
—
—
—
13,000
1087
12.17
1113
12.54
1138
12.91
1163
13.30
1187
13.68
—
—
—
—
—
—
—
—
—
—
14,000
1128
13.98
1153
14.36
1177
14.74
—
—
—
—
—
—
—
—
—
—
—
—
—
—
15,000
1171
16.00
1194
16.38
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Watts =
Bhp x 746
Motor efficiency