17
Table 12 — Fan Performance — 48/50N 75 Nominal Ton Units High-Static Return Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
1.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
15,000
332
1.50
363
1.98
392
2.50
420
3.04
447
3.61
18,000
387
2.36
413
2.91
438
3.50
462
4.11
486
4.75
21,000
443
3.52
466
4.15
488
4.81
509
5.50
530
6.21
24,000
500
5.03
520
5.74
540
6.48
559
7.24
578
8.03
27,000
558
6.96
576
7.75
593
8.56
611
9.40
628
10.26
30,000
616
9.34
633
10.22
648
11.11
664
12.02
679
12.95
33,000
675
12.23
690
13.19
704
14.16
718
15.15
733
16.16
36,000
734
15.69
747
16.72
761
17.77
774
18.85
787
19.94
39,000
793
19.75
805
20.87
818
22.00
830
23.16
842
24.32
42,000
852
24.48
864
25.68
875
26.89
886
28.13
898
29.37
45,000
911
29.92
922
31.21
933
32.50
943
33.81
954
35.14
48,000
971
36.12
981
37.48
991
38.87
1001
40.25
1011
41.66
51,000
1030
43.14
1040
44.59
1049
46.06
1058
47.52
1068
49.00
52,500
1060
46.98
1069
48.46
1078
49.97
1087
51.48
1097
53.00
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2
1.4
1.6
1.8
2.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
15,000
473
4.20
499
4.82
524
5.45
548
6.11
571
6.78
18,000
509
5.41
532
6.10
554
6.80
576
7.53
597
8.27
21,000
551
6.94
571
7.69
591
8.47
610
9.26
630
10.07
24,000
596
8.83
615
9.66
632
10.50
650
11.36
668
12.24
27,000
644
11.13
661
12.03
677
12.95
694
13.88
710
14.83
30,000
695
13.91
710
14.87
725
15.86
740
16.86
754
17.88
33,000
747
17.19
761
18.23
774
19.29
788
20.37
802
21.46
36,000
800
21.04
813
22.16
826
23.30
838
24.45
851
25.61
39,000
854
25.50
866
26.70
878
27.91
890
29.14
902
30.37
42,000
909
30.63
920
31.91
931
33.19
942
34.49
953
35.81
45,000
965
36.47
975
37.83
986
39.19
996
40.57
1006
41.96
48,000
1021
43.09
1031
44.52
1040
45.95
1050
47.41
1060
48.88
51,000
1077
50.50
1087
52.02
1096
53.54
1105
55.07
1114
56.62
52,500
1106
54.55
1115
56.09
1124
57.66
1133
59.23
1142
60.81
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2
2.4
2.6
2.8
3.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
15,000
594
7.46
616
8.16
638
8.86
660
9.59
680
10.32
18,000
618
9.02
638
9.79
658
10.58
678
11.38
697
12.20
21,000
649
10.90
667
11.74
685
12.60
703
13.47
721
14.35
24,000
685
13.13
702
14.05
719
14.97
735
15.92
751
16.87
27,000
725
15.79
741
16.77
756
17.77
772
18.78
787
19.81
30,000
769
18.92
783
19.97
798
21.03
812
22.12
826
23.21
33,000
815
22.57
829
23.69
842
24.83
855
25.98
868
27.14
36,000
863
26.79
876
27.98
888
29.19
900
30.41
913
31.65
39,000
913
31.62
925
32.89
936
34.18
948
35.46
959
36.78
42,000
964
37.14
975
38.47
986
39.83
997
41.20
1008
42.58
45,000
1017
43.37
1027
44.78
1037
46.20
1047
47.65
1057
49.10
48,000
1070
50.36
1079
51.86
1089
53.35
1099
54.87
1108
56.41
51,000
1124
58.18
1133
59.74
1142
61.33
1151
62.91
1160
64.52
52,500
1151
62.42
1160
64.02
1169
65.64
1177
67.26
1186
68.90
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2
3.4
3.6
3.8
4.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
15,000
701
11.06
721
11.82
741
12.58
760
13.35
779
14.13
18,000
716
13.02
734
13.86
753
14.70
771
15.56
789
16.43
21,000
739
15.25
756
16.16
773
17.09
790
18.02
806
18.97
24,000
768
17.84
784
18.82
799
19.82
815
20.83
830
21.84
27,000
802
20.84
816
21.89
831
22.96
846
24.04
860
25.12
30,000
840
24.32
853
25.44
867
26.58
881
27.72
894
28.88
33,000
881
28.32
894
29.51
906
30.70
919
31.93
932
33.15
36,000
925
32.90
937
34.15
949
35.42
961
36.71
972
38.00
39,000
971
38.09
982
39.43
993
40.77
1004
42.12
1015
43.49
42,000
1018
43.96
1029
45.36
1039
46.78
1050
48.21
1060
49.64
45,000
1067
50.56
1077
52.05
1087
53.52
1097
55.02
1107
56.53
48,000
1118
57.94
1127
59.48
1137
61.05
1146
62.62
1155
64.19
51,000
1169
66.13
1178
67.75
1187
69.40
1196
71.04
1205
72.70
52,500
1195
70.55
1204
72.22
1213
73.88
1221
75.56
1230
77.26
Содержание WeatherExpert 48N2
Страница 135: ...135 Fig 18 48 50N Typical Power Schematic Nominal 075 Ton Unit Shown ...
Страница 136: ...136 Fig 19 48 50N Typical Power Schematic Nominal Ton 90 150 Units Shown ...
Страница 137: ...137 Fig 20 48 50N Main Base Board Input Output Connections ...
Страница 138: ...138 Fig 21 48 50N RXB EXB CEM Input Output Connections a48 9307 ...
Страница 139: ...139 Fig 22 48 50N EXV SCB Input Output Connections a48 9308 ...
Страница 140: ...140 Fig 23 48N Typical Modulating Gas Heat Unit Control Wiring ...
Страница 141: ...141 Fig 24 50N Typical Electric Heat Unit Control Wiring ...
Страница 144: ...144 Fig 27 48N Typical Gas Heat Section Wiring Nominal Ton 120 to 150 Units ...
Страница 145: ...145 Fig 28 48 50N Typical Power Component Control Wiring 460 v ...
Страница 146: ...146 Fig 29 48 50N Component Control Wiring 575 v Nominal Ton 075 to 150 Units ...
Страница 147: ...147 Fig 30 48 50N Component Arrangement Power Box ...
Страница 148: ...148 Fig 31 48 50N Component Arrangement Control Box ...
Страница 168: ...168 Fig 47 Sensor and Ignition Position Fig 48 Combustion Blower Details SENSOR DETAILS IGNITION DETAILS ...
Страница 240: ...240 APPENDIX D VFD INFORMATION CONT Fig G VFD Bypass Wiring Diagram WHEN USED ...