30
UPFLOW / HORIZONTAL GAS FURNACES
Model
Numbers
Heating
Input
(Btuh)
Motor
Speed
External Static Pressure (Inches Water Column)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
CFM
Rise
CFM
Rise
CFM
Rise
CFM
Rise
CFM
Rise
CFM
Rise
CFM
Rise
CFM
Rise
SC038D-23A
Bottom Retur
n
38,000
High*
1,245
26
1,200
27
1,150
28
1,100
29
1,050
31
985
33
920
35
865
37
Med-High
1,115
29
1,075
30
1,030
31
990
33
935
35
880
37
815
40
740
44
Med-Low**
785
41
770
42
745
43
720
45
680
48
640
51
595
54
530
61
Low
645
50
630
51
610
53
580
56
555
58
525
62
480
67
420
77
SC038D-23A
Side Retur
n
38,000
High*
1,330
24
1,285
25
1,230
26
1,175
28
1,125
29
1,055
31
985
33
925
35
Med-High
1,195
27
1,150
28
1,100
29
1,060
31
1,000
32
940
34
875
37
790
41
Med-Low**
840
39
825
39
800
40
770
42
730
44
685
47
640
51
560
58
Low
680
48
675
48
655
49
620
52
600
54
560
58
515
63
450
72
SC054D-24B
Bottom Retur
n
54,000
High*
1,550
30
1,520
30
1,485
31
1,450
32
1,410
33
1,360
34
1,300
35
1,255
37
Med-High
1,250
37
1,220
38
1,200
38
1,170
39
1,140
40
1,105
42
1,065
43
1,010
46
Med-Low**
935
49
910
51
880
52
850
54
815
56
785
59
735
63
680
68
Low
720
64
690
67
655
70
620
74
585
79
550
84
520
88
485
95
SC054D-24B
Side Retur
n
54,000
High*
1,630
28
1,595
29
1,560
29
1,525
30
1,480
31
1,430
32
1,365
34
1,320
35
Med-High
1,315
35
1,280
36
1,260
37
1,230
37
1,200
38
1,160
40
1,120
41
1,060
43
Med-Low**
980
47
955
48
925
50
890
52
855
54
825
56
775
59
715
64
Low
755
61
725
63
690
67
650
71
615
75
580
79
545
84
510
90
SC072D-24B
Bottom Retur
n
72,000
High*
1,590
39
1,550
40
1,525
40
1,475
42
1,425
43
1,380
44
1,325
46
1,240
49
Med-High**
1,260
49
1,240
49
1,220
50
1,185
52
1,160
53
1,110
55
1,085
57
1,030
60
Med-Low
1,125
55
1,110
55
1,085
57
1,050
58
1,025
60
990
62
940
65
865
71
Low
895
69
865
71
830
74
795
77
775
79
750
82
693
89
665
92
SC072D-24B
Side Retur
n
72,000
High*
1,670
37
1,630
38
1,600
38
1,550
40
1,495
41
1,450
42
1,390
44
1,300
47
Med-High**
1,325
46
1,300
47
1,280
48
1,245
49
1,220
50
1,165
53
1,140
54
1,080
57
Med-Low
1,180
52
1,165
53
1,140
54
1,100
56
1,075
57
1,040
59
985
62
910
67
Low
940
65
910
67
870
70
935
66
815
75
790
78
730
84
640
96
SC072D-35C
Bottom Retur
n
72,000
High*
1,895
32
1,790
34
1,720
36
1,630
38
1,550
40
1,445
42
1,330
46
1,225
50
Med-High**
1,775
35
1,710
36
1,650
37
1,550
40
1,470
42
1,385
44
1,290
48
1,180
52
Med-Low
1,255
49
1,200
51
1,155
53
1,105
56
1,050
58
1,000
61
925
66
830
74
Low
1,140
54
1,100
56
1,065
58
1,025
60
980
63
930
66
870
70
805
76
SC072D-35C
Side Retur
n
72,000
High*
1,970
31
1,865
33
1,780
34
1,695
36
1,615
38
1,505
41
1,385
44
1,275
48
Med-High**
1,845
33
1,780
34
1,715
36
1,615
38
1,530
40
1,440
43
1,340
46
1,230
50
Med-Low
1,305
47
1,250
49
1,200
51
1,150
53
1,090
56
1,040
59
965
64
865
71
Low
1,185
52
1,145
54
1,110
55
1,065
58
1,020
60
965
64
905
68
840
73
SC072D-35C
Side + Bottom
or 2 Sides
72,000
High*
1,990
31
1,880
33
1,805
34
1,710
36
1,630
38
1,510
41
1,400
44
1,285
48
Med-High**
1,865
33
1,795
34
1,735
35
1,630
38
1,545
40
1,455
42
1,355
45
1,240
49
Med-Low
1,320
46
1,260
49
1,215
50
1,160
53
1,105
56
1,050
58
970
63
875
70
Low
1,200
51
1,155
53
1,120
55
1,075
57
1,030
60
975
63
915
67
845
73
Table 4. *SC - 92.1% AFUE, Single Stage, Upfl ow/Horizontal Gas Furnace
AIRFLOW DATA