31
UPFLOW HORIZONTAL / GAS FURNACES
Model
Number
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
SC090D-35C
Bottom
Retur
n
90,000
High*
2,155
36
2,090
37
2,015
38
1,960
39
1,910
40
1,835
42
1,755
44
1,660
46
Med-High**
2,015
38
1,960
39
1,920
40
1,860
41
1,805
42
1,755
44
1,695
45
1,615
47
Med-Low
1,705
45
1,675
46
1,640
47
1,590
48
1,555
49
1,495
51
1,435
53
1,340
57
Low
1,410
54
1,390
55
1,365
56
1,330
58
1,310
59
1,275
60
1,235
62
1,210
63
SC090D-35C
Bottom
Retur
n
90,000
High*
2,155
36
2,090
37
2,015
38
1,960
39
1,910
40
1,835
42
1,755
44
1,660
46
Med-High**
2,015
38
1,960
39
1,920
40
1,860
41
1,805
42
1,755
44
1,695
45
1,615
47
Med-Low
1,705
45
1,675
46
1,640
47
1,590
48
1,555
49
1,495
51
1,435
53
1,340
57
Low
1,410
54
1,390
55
1,365
56
1,330
58
1,310
59
1,275
60
1,235
62
1,210
63
SC090-35C
Side Retur
n
90,000
High*
2,240
34
2,175
35
2,100
37
2,040
38
1,985
39
1,910
40
1,825
42
1,725
44
Med-High**
2,095
37
2,040
38
2,000
38
1,935
40
1,875
41
1,825
42
1,765
43
1,680
46
Med-Low
1,775
43
1,740
44
1,705
45
1,655
46
1,615
47
1,555
49
1,490
51
1,335
57
Low
1,465
52
1,445
53
1,420
54
1,385
55
1,360
56
1,325
58
1,285
60
1,260
61
SC090-35C
Side + Bottom
or 2 Sides
90,000
High*
2265
34
2,195
35
2,115
36
2,060
37
2,005
38
1,930
40
1,845
42
1,745
44
Med-High**
2,115
36
2,060
37
2,015
38
1,955
39
1,895
40
1,845
42
1,780
43
1,695
45
Med-Low
1,790
43
1,760
44
1,725
44
1,670
46
1,635
47
1,570
49
1,510
51
1,410
54
Low
1,480
52
1,460
53
1,435
53
1,400
55
1,375
56
1,340
57
1,300
59
1,270
60
SC108-45D
Bottom only
or 2 openings
108,000
High*
2,135
43
2,095
44
2,040
45
1,975
47
1,910
48
1,840
50
1,735
53
1,675
55
Med-High**
2,000
46
1,955
47
1,900
48
1,845
50
1,800
51
1,735
53
1,665
55
1,570
59
Med-Low
1,665
55
1,660
55
1,625
57
1,590
58
1,530
60
1,500
61
1,415
65
1,340
69
Low
1,385
66
1,360
68
1,310
70
1,300
71
1,275
72
1,250
74
1,200
77
1,150
80
SC108-45D
Side Retur
n
108,000
High*
2,115
43
2,075
44
2,020
46
1,955
47
1,890
49
1,822
50
1,720
53
1,660
55
Med-High**
1,980
46
1,935
48
1,880
49
1,830
50
1,780
52
1,720
53
1,650
56
1,555
59
Med-Low
1,650
56
1,645
56
1,610
57
1,575
58
1,515
61
1,485
62
1,400
66
1,330
69
Low
1,370
67
1,345
68
1,300
71
1,290
71
1,260
73
1,240
74
1,190
77
1,140
81
SC120-45D
Bottom only
or 2 openings
120,000
High*
2,135
48
2,095
49
2,040
50
1,975
52
1,910
54
1,840
56
1,735
59
1,675
61
Med-High**
2,000
51
1,955
52
1,900
54
1,845
55
1,800
57
1,735
59
1,665
61
1,570
65
Med-Low
1,665
61
1,660
62
1,625
63
1,590
64
1,530
67
1,500
68
1,415
72
1,340
76
Low
1,385
74
1,360
75
1,310
78
1,300
79
1,275
80
1,250
82
1,200
85
1,150
89
SC120-45D
Side Retur
n
120,000
High*
2,115
48
2,075
49
2,020
51
1,955
52
1,890
54
1,822
56
1,720
59
1,660
62
Med-High**
1,980
52
1,935
53
1,880
54
1,830
56
1,780
57
1,720
59
1,650
62
1,555
66
Med-Low
1,650
62
1,645
62
1,610
63
1,575
65
1,515
67
1,485
69
1,400
73
1,330
77
Low
1,370
75
1,345
76
1,300
79
1,290
79
1,260
81
1,240
82
1,190
86
1,140
90
* Factory Set Cooling Speed
** Factory Set Heating Speed
NOTES:
1. Two openings are recommended for airfl ows above 1,600 CFM if fi lter(s) is(are) adjacent to furnace
2. Temperature rises in the table are approximate. Actual temperature rises may vary.
3. Temperature rises shaded in gray are for reference only. These conditions are not recommended
Table 4. Continued
