BLOWER PERFORMANCE SPECIFICATIONS
11
*CVM970804CNA
Cooling Speed
(@ .1" - .8" w.c. ESP)
*CVM970804CNA
Heating Speed
(@ .1" - .5" w.c. ESP; Rise Range: 35 - 65°F)
Tap
Adjust
High-Stage
CFM
Low-Stage
CFM
Tap
Adjust
High-Stage
CFM
Rise
(°F)
A
Minus 10%
753
500
A
Minus 10%
1,111
65
Normal
837
556
Normal
1,234
58
Plus 10%
921
612
Plus 10%
1,357
53
B
Minus 10%
920
643
C
Minus 10%
1,193
60
Normal
1,022
714
Normal
1,325
54
Plus 10%
1,124
785
Plus 10%
1,458
49
C
Minus 10%
1,085
754
D
Minus 10%
1,298
55
Normal
1,206
838
Normal
1,442
50
Plus 10%
1,327
922
Plus 10%
1,586
45
D
Minus 10%
1,328
892
D
Minus 10%
1,375
52
Normal
1,475
991
Normal
1,528
47
Plus 10%
1,623
1,090
Plus 10%
1,681
43
*CVM971005CNA
Cooling Speed
(@ .1" - .8" w.c. ESP)
*CVM971005CNA
Heating Speed
(@ .1" - .5" w.c. ESP; Rise Range: 35 - 65°F)
Tap
Adjust
High-Stage
CFM
Low-Stage
CFM
Tap
Adjust
High-Stage
CFM
Rise
(°F)
A
Minus 10%
706
472
A
Minus 10%
1,583
57
Normal
784
524
Normal
1,759
51
Plus 10%
862
576
Plus 10%
1,935
46
B
Minus 10%
970
670
B
Minus 10%
1,617
56
Normal
1,078
744
Normal
1,797
50
Plus 10%
1,186
818
Plus 10%
1,977
45
C
Minus 10%
1,249
834
C
Minus 10%
1,656
54
Normal
1,388
927
Normal
1,840
49
Plus 10%
1,527
1,020
Plus 10%
2,024
44
D
Minus 10%
1,589
1,067
D
Minus 10%
1,693
53
Normal
1,766
1,185
Normal
1,881
48
Plus 10%
1,943
1,304
Plus 10%
2,069
43
Notes
•
All furnaces ship as high speed for cooling. Installer must adjust blower
speed as needed.
•
For most jobs, about 400 CFM per ton when cooling is desirable.
•
CFM between .5" and .8" w.c. is tabulated for cooling purposes only.
