28
GUH80A - UPFLOW / HORIZONTAL FURNACES - 80+ AFUE
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
090C5XE
Bottom Return
(90,000)
High*
1,940
34
1,860
36
1,790
37
1,710
39
1,625
41
1,540
43
1,450
46
1,355
49
Med-High**
1,820
37
1,760
38
1,695
39
1,620
41
1,545
43
1,466
45
1,380
48
1,280
52
Med-Low
1,290
52
1,245
54
1,200
56
1,155
58
1,110
60
1,060
63
995
67
915
73
Low
1,145
58
1,110
60
1,070
62
1,035
64
1,000
67
950
70
905
74
835
80
090C5XE
Side Return
(90,000)
High*
2,020
33
1,935
34
1,860
36
1,780
37
1,690
39
1,600
42
1,510
44
1,410
47
Med-High**
1,895
35
1,830
36
1,765
38
1,685
40
1,610
41
1,525
44
1,435
46
1,330
50
Med-Low
1,345
50
1,295
51
1,250
53
1,200
56
1,155
58
1,100
61
1,035
64
950
70
Low
1,190
56
1,155
58
1,115
60
1,075
62
1,040
64
980
68
940
71
870
77
090C5XE
Side + Bottom
or 2 Sides
(90,000)
High*
2,040
33
1,955
34
1,880
35
1,795
37
1,705
39
1,620
41
1,525
44
1,425
47
Med-High**
1,910
35
1,850
36
1,780
37
1,700
39
1,625
41
1,540
43
1,450
46
1,345
50
Med-Low
1,355
49
1,310
51
1,260
53
1,215
55
1,165
57
1,115
60
1,050
63
960
69
Low
1,205
55
1,165
57
1,125
59
1,085
61
1,050
63
1,000
67
950
70
875
76
108C5XE
Bottom Return
(108,000)
High*
2,205
36
2,150
37
2,095
38
2,030
39
1,970
41
1,900
42
1,830
44
1,740
46
Med-High**
2,050
39
1,995
40
1,955
41
1,895
42
1,840
43
1,775
45
1,700
47
1,610
50
Med-Low
1,700
47
1,680
48
1,645
49
1,610
50
1,565
51
1,525
52
1,460
55
1,375
58
Low
1,390
58
1,370
58
1,355
59
1,320
61
1,300
62
1,270
63
1,225
65
1,175
68
108C5XE
Side Return
(108,000)
High*
2,295
35
2,235
36
2,180
37
2,110
38
2,050
39
1,975
41
1,900
42
1,810
44
Med-High**
2,130
38
2,075
39
2,035
39
1,970
41
1,915
42
1,845
43
1,765
45
1,675
48
Med-Low
1,770
45
1,750
46
1,710
47
1,675
48
1,630
49
1,585
50
1,520
53
1,430
56
Low
1,445
55
1,425
56
1,410
57
1,375
58
1,350
59
1,320
61
1,275
63
1,225
65
108C5XE
Side + Bottom
or 2 Sides
(108,000)
High*
2,315
35
2,260
35
2,200
36
2,130
38
2,070
39
1,995
40
1,925
42
1,825
44
Med-High**
2,155
37
2,095
38
2,055
39
1,990
40
1,930
41
1,865
43
1,785
45
1,690
47
Med-Low
1,785
45
1,765
45
1,725
46
1,690
47
1,645
49
1,600
50
1,535
52
1,445
55
Low
1,460
55
1,440
56
1,425
56
1,385
58
1,365
59
1,335
60
1,285
62
1,235
65
126D5XE
Bottom only
or 2 openings
(126,000)
High*
2,255
41
2,200
42
2,125
44
2,065
45
2,010
46
1,935
48
1,855
50
1,755
53
Med-High**
2,075
45
2,025
46
1,970
47
1,940
48
1,875
50
1,810
52
1,750
53
1,680
56
Med-Low
1,720
54
1,695
55
1,655
56
1,630
57
1,580
59
1,520
61
1,455
64
1,390
67
Low
1,360
69
1,375
68
1,365
68
1,315
71
1,310
71
1,300
72
1,260
74
1,230
76
126D5XE
Side Return
(126,000)
High*
2,230
42
2,180
43
2,105
44
2,045
46
1,990
47
1,915
49
1,835
51
1,740
54
Med-High**
2,055
45
2,005
47
1,950
48
1,920
49
1,855
50
1,790
52
1,735
54
1,665
56
Med-Low
1,705
55
1,680
56
1,640
57
1,615
58
1,565
60
1,505
62
1,440
65
1,375
68
Low
1,345
69
1,360
69
1,350
69
1,300
72
1,230
76
1,290
72
1,250
75
1,220
77
NOTES
:
* Factory Set Cooling Speed
** Factory Set Heating Speed
1. Two openings are recommended for airflows above 1,600 CFM if filter(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 3. Continued
