BLOWER PERFORMANCE SPECIFICATIONS
13
NOTES:
• CFM in chart is without filter(s). Filters do not ship with this furnace, but must be provided by the installer.
• All furnaces ship as high-speed cooling. Installer must adjust blower cooling speed as needed.
• For most jobs, about 400 CFM per ton when cooling is desirable
• INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
• The chart is for information only. For satisfactory operation, external static pressure must not exceed values shown on the rating plate. The shaded area
indicates
ranges in excess of maximum static pressure allowed when heating.
• The dashed (- - -) areas indicate a temperature rise not recommended for this model.
• At higher altitudes, a properly de-rated unit will have approximately the same temperature rise at a
particular CFM, while ESP at the CFM will be lower.
GDH8***A*
Tons AC
at 0.5"
0.6
0.7
0.8
ESP
CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
Hi gh
3.0
1 ,353
25
1,290
26
1,246
27
1,199
28
1,149
29
1,116 1,11 6 1,099
Med
2.5
1 ,183
28
1,113
30
1,098
30
1,052
32
1,039
32
1,006 1,01 2
969
Med-Lo
2.0
980
34
9 46
35
920
36
900
37
896
37
885
855
804
Low
1.5
778
43
7 62
44
738
45
746
45
738
45
717
696
678
Hi gh
3.0
1 ,290
40
1,236
42
1,194
43
1,166
44
1,176
44
1,166 1,10 8 1,029
Med
2.5
1 ,139
46
1,090
48
1,035
50
1,063
49
1,063
49
1020
962
895
Med-Lo
2.0
962
54
9 27
56
925
56
941
55
909
57
877
834
779
Low
1.5
787
66
7 76
67
763
68
744
70
723
72
690
641
581
Hi gh
4.0
2 ,128
31
2,063
32
2,001
33
1,927
35
1,824
37
1,726 1,62 8 1,529
Med
3.5
1 ,840
36
1,788
37
1,745
38
1,689
39
1,625
41
1,550 1,47 0 1,364
Med-Lo
3.0
1 ,602
42
1,558
43
1,543
43
1,493
45
1,455
46
1,402 1,32 8 1,239
Low
2.5
1 ,277
52
1,252
53
1,244
54
1,229
54
1,214
55
1,179 1141 1079
Hi gh
5.0
2 ,405
35
2,361
36
2,250
38
2,161
39
2,037
42
1,937 1,80 8 1,689
Med
4.0
1 ,880
45
1,838
46
1,794
47
1,734
49
1,677
51
1,568 1,51 0 1,401
Med-Lo
3.5
1659
51
1,630
52
1,587
54
1,537
55
1,492
57
1,445 1,36 8 1,287
Low
3.0
1 ,472
58
1,454
59
1,404
61
1,366
62
1,326
64
1300 1228 1139
BLOWER PERFORMANCE
0.1
0.2
0.3
0.4
0.5
(CFM & Temperature Rise vs. External Static Pressure)
Model
Motor
Speed
EXTERNAL STATIC PRESSURE (Inches Water Column)
GDH8
0403A*A*
GDH8
0603A*A*
GDH8
0804B*A*
GDH8
1005C*A*